From 1b9d0472b72177a604d3c5dd26d25eec00049bd2 Mon Sep 17 00:00:00 2001 From: joerg Date: Sun, 23 Mar 1997 18:51:21 +0000 Subject: This is the long-awaited import of top into the base system (actually, the src/contrib/top part right now). This tools is simply too system- dependant to maintain it in the ports collection. --- contrib/top/ADVERTISEMENT | 26 ++ contrib/top/Changes | 503 ++++++++++++++++++++ contrib/top/Configure | 503 ++++++++++++++++++++ contrib/top/DISCLAIMER | 30 ++ contrib/top/FAQ | 233 ++++++++++ contrib/top/INSTALL | 165 +++++++ contrib/top/Make.desc.X | 23 + contrib/top/Makefile.X | 130 ++++++ contrib/top/Porting | 165 +++++++ contrib/top/README | 178 +++++++ contrib/top/boolean.h | 5 + contrib/top/commands.c | 509 ++++++++++++++++++++ contrib/top/display.c | 1129 +++++++++++++++++++++++++++++++++++++++++++++ contrib/top/display.h | 7 + contrib/top/getans | 86 ++++ contrib/top/getopt.c | 90 ++++ contrib/top/install | 69 +++ contrib/top/layout.h | 27 ++ contrib/top/loadavg.h | 57 +++ contrib/top/m-template | 241 ++++++++++ contrib/top/machine.h | 58 +++ contrib/top/metatop | 25 + contrib/top/os.h | 29 ++ contrib/top/patchlevel.h | 1 + contrib/top/prime.c | 40 ++ contrib/top/screen.c | 494 ++++++++++++++++++++ contrib/top/screen.h | 31 ++ contrib/top/sigconv.awk | 53 +++ contrib/top/top.X | 324 +++++++++++++ contrib/top/top.c | 996 +++++++++++++++++++++++++++++++++++++++ contrib/top/top.h | 36 ++ contrib/top/top.local.H | 68 +++ contrib/top/username.c | 185 ++++++++ contrib/top/utils.c | 453 ++++++++++++++++++ contrib/top/utils.h | 23 + contrib/top/version.c | 25 + 36 files changed, 7017 insertions(+) create mode 100644 contrib/top/ADVERTISEMENT create mode 100644 contrib/top/Changes create mode 100755 contrib/top/Configure create mode 100644 contrib/top/DISCLAIMER create mode 100644 contrib/top/FAQ create mode 100644 contrib/top/INSTALL create mode 100644 contrib/top/Make.desc.X create mode 100644 contrib/top/Makefile.X create mode 100644 contrib/top/Porting create mode 100644 contrib/top/README create mode 100644 contrib/top/boolean.h create mode 100644 contrib/top/commands.c create mode 100644 contrib/top/display.c create mode 100644 contrib/top/display.h create mode 100755 contrib/top/getans create mode 100644 contrib/top/getopt.c create mode 100755 contrib/top/install create mode 100644 contrib/top/layout.h create mode 100644 contrib/top/loadavg.h create mode 100644 contrib/top/m-template create mode 100644 contrib/top/machine.h create mode 100755 contrib/top/metatop create mode 100644 contrib/top/os.h create mode 100644 contrib/top/patchlevel.h create mode 100644 contrib/top/prime.c create mode 100644 contrib/top/screen.c create mode 100644 contrib/top/screen.h create mode 100644 contrib/top/sigconv.awk create mode 100644 contrib/top/top.X create mode 100644 contrib/top/top.c create mode 100644 contrib/top/top.h create mode 100644 contrib/top/top.local.H create mode 100644 contrib/top/username.c create mode 100644 contrib/top/utils.c create mode 100644 contrib/top/utils.h create mode 100644 contrib/top/version.c (limited to 'contrib/top') diff --git a/contrib/top/ADVERTISEMENT b/contrib/top/ADVERTISEMENT new file mode 100644 index 0000000..c371c9c --- /dev/null +++ b/contrib/top/ADVERTISEMENT @@ -0,0 +1,26 @@ + William LeFebvre + Group sys Consulting + wnl@groupsys.com + +1-770-813-3224 + + +William LeFebvre is available for consulting and teaching engagements +through the company Group sys Consulting. William's specialties are: + + Unix system administration issues + Local area network design + Design of safe connections to the Internet + Domain Name Service + Unix and Internet security + INN news server configuration + SunOS to Solaris migration + Troubleshooting + + +Although located in the Atlanta metropolitan area, William can easily +travel to any location in the United States and Canada. Trips to +other countries can be arranged as well. + +If you are interested in having William work for your organization, +contact him at +1-770-813-3224 or via the address "wnl@groupsys.com". + diff --git a/contrib/top/Changes b/contrib/top/Changes new file mode 100644 index 0000000..aa31bac --- /dev/null +++ b/contrib/top/Changes @@ -0,0 +1,503 @@ +Thu Aug 29 1996 - wnl (3.4) + Replaced modules (from Tim Pugh): next 32, next40. + Fixed bug in username.c: hashing negative uids. + +Thu Aug 22 1996 - wnl (3.4beta3) + Patched modules: ultrix4, sunos4, sunos5, utek, decosf1, irix5. + Added modules: next40, next32. + Fixed procstates update bug in display.c. + Fixed divide by zero bug in utils.c. + Fixed bad number in layout.h + Minor fixes to Configure. + Complete overhaul of FAQ. + +Tue Feb 13 1996 - wnl (3.4beta3) + Added convex module from Warren Vosper (originally written by + William Jones). + +Tue Feb 13 1996 - wnl (3.4beta2) + Fixed format_k in utils.c to calculate K and M values correctly. + Added check for gigabyte values ('G'). Changed sumamry_format + in display.c to use format_k where appropriate. + Changed creation of distribution tar file to place everything in + a top level directory. + +Tue Jan 30 1996 - wnl (3.4beta2) + Added m_aix41 module. Added new tag type to module comments: + TERMCAP, which defined the library to use for a termcap library. + If no TERMCAP tag is found in the module's initial comment, then + Configure will default to "-ltermcap". AIX needs this since it + put all the termcap routines in libcurses(!) + + Added m_bsdos2 (found lingering in my mailbox). + Updated m_svr4 to include support for NCR multiprocessors. + Fixed small bug in utils.c + +Thu Jan 25 1996 - wnl (3.4beta1) + Fixed m_sunos5 invocation of gettimeofday to include "NULL" as + second argument. This provides compatability with the Posix- + compliant template provided with SunOS 5.5, but doesn't hurt + previous versions since they do bother with a template for that + function. + + Made changes (recommended by net users) to hpux10, ultrix4, + netbsd10, aux3 (replaced aux31). Added module for linux. + +Fri Oct 10 1995 - wnl (3.4beta1) + Added user-contributed modules for SCO Unix, IRIX 5, HP/UX 10, + Pyramid DC/OSX. Changed Configure so that it runs in environments + whose c-shells have no 'eval'(!). Added support for multiple sort + ordering methods via the -o switch. This option requires support + from the machine dependent module: such support was added to + sunos5 (thus sunos54) and sunos4. + + display.c: Changed CPU states display line to shorten the leading + tag if the data won't fit in the current width. Fixed a divide-by- + zero bug that affected ultrasparc servers (and potentially other + systems). + + m_sunos5.c: Now asks the system for the correct pagesize rather than + assuming it is 4K. + +Thu Mar 2 1995 - wnl (3.3 RELEASE) + Added module netbsd10 and renamed netbsd to netbsd08. Changed + Configure so that it does not use an initial default module name. + Made other compatability fixes to Configure. Added comments to + decosf1 concerning optimizer bug. Other documentation changes. + Added use of "prime.c" to Configure script. + +Tue Feb 7 1995 - wnl (3.3beta6) + Still one more beta.... + Fixes for sunos5 2.4 gcc core dump (it was an alignment problem). + Fixed and improvements for decosf1 (including use of format_k + for proper SIZE column formatting). Added modules freebsd20 and + ncr3000. + +Thu Feb 2 1995 - wnl (3.3beta5) + One more beta.... + Fixed a few bugs in the sunos5 port pertaining to casting and + very large memory counts. Added "ifndef HAVE_GETOPT" to getopt.c + to provide for conditional compilation of the getopt function. + Those systems that have getopt in libc can add -DHAVE_GETOPT to + the CFLAGS line in the module to prevent the function from being + compiled. Added sunos54 module to accomodate SunOS 5.4 + peculiarities. Added module for aux3.1. + +Wed Jan 4 1995 - wnl (3.3beta4) + This is really taking too long......sigh. + Fixed SIGWINCH handling once and for all. It now remembers the + number of processes you want displayed even thru window resizes. + Fixed buffer conflict in utils.c (itoa and itoa7). + Lots of small improvements to the various modules were made over + the past month: too numberous to list here. SunOS 5 module made + more secure thru use of seteuid calls (other SVR4 modules should + be modified similarly). One final MP fix to sunos5, too. Module + for decosf1 was modified to accomodate V3.0. + +Mon Apr 18 1994 - wnl (3.3beta3) + I think I finally got a sunos5 module that will work on MP + machines. Fixed cpu states figure in osmp41a so that + percentages never exceed 100%. Added shell script "install" + since Unix vendors can't seem to make up their minds on what + options they want to use for the one that comes with the OS. + Added netbsd modules from Christos. Fixed lots of other little + things over the past few months that I have long since forgotten. + +Wed Dec 15 1993 - wnl (3.3beta2) + Added module patches from various users: hpux9, sunos5. + Fixed bug with batch mode (screen_width wasn't getting set). + Changes to accomodate 64 bit machines. + Fixed some bugs in command parsing ("renice 19 " did something + unexpected). + +Mon Aug 30 1993 - wnl (3.3beta) + Added lots of little patches from various users. + Added routines to utils.c for intelligent formatting of kilobytes + and time. These are intended to be used in the modules when + formatting a process line. Added code to "summary_format" in + display.c to do intelligent formatting of memory quantities. + Redid display.c to allow for varying line widths and dynamic + reallocation of the screen buffer. + Added a SIGWINCH handler to top.c! + Added a constant, MAX_COLS, to top.h which defines the absolute + widest line we will ever allow. Changed allocations of "char fmt" + in all machine modules to use this constant rather than an abitrary + number. + +Fri Aug 13 1993 - wnl (3.3) + Changed return value definition of time-related functions in top.c, + display.c, and m_ultrix4.c to time_t (stuart@coral.cs.jcu.edu.au). + Fixed bug in display.c: line_update when start != 0. + +Wed Aug 4 1993 - wnl (3.2 release) + Changes to Configure from Paul Vixie. Added modules for hpux9 and + bsd386. + +Tue Jul 13 1993 - wnl (3.1 release) + More small changes and minor bug fixes. Brought bsd44 up to date + and added a module for svr4.2. Changed shar packaging to use Rich + Salz's cshar stuff. + +Wed Jul 7 1993 - wnl (3.1BETA) + More changes and bug fixes to Configure. Applied some other + minor bug fixes and suggestions from the beta testers. Added + the "metatop" shell script and the "installmeta" rule to the + Makefile to make handling multiple machine models and OS versions + easier. Added INSTALL and FAQ files. + +Tue May 18 1993 - wnl (3.1BETA) + Changed Configure to be compatible with most SVR4 environments + (differing output from "ls -lg"). Also changed Configure, + Makefile.X, etc., to look for module files in the subdirectory + "machine" (thanks to Christos Zoulas). + +Tue Apr 20 1993 - wnl (3.1BETA) + Changed both occurences of "ls -1" in Configure to "ls". This + SHOULD produce the same result, and has the advantage that it + doesn't produce an error on a system 5 machine. Integrated other + changes recommended in the first round of beta testing. + +Wed Mar 10 1993 - wnl (3.1BETA) + MAJOR CHANGE: I have added a required function to all machine + dependent modules, called proc_owner. It takes a pid as an argument + and returns the uid of the process's owner. Such capability is + necessary for top to run securely as a set-uid program, something + that is needed for SVR4 implementations to read /proc. I have + retrofitted all modules except dgux with this function, but was + not able to test most of them. Top should now run securely as + a setuid program. Added 386bsd and sunos5 modules. Added sunos4mp + module for MP Suns. + +Sat Feb 20 1993 - wnl (3.1ALPHA) + Modified top.c and commands.c to compile correctly on System V + derived Unixes (especially SVR4), but in a way that doesn't rely + on an oracle-like declaration (that is, I don't use "ifdef SYSV"). + Fixed some bugs in "Configure" and "getans". Added inspection of + env variable "TOP" for options, and made -I default to showing + idle processes. Added "u" command to change username restriction + on the fly. Created shell script "suntop" for poor multi-version + SunOS folks (like myself). + +Wed Jun 3 1992 - wnl (3.0) + "max_topn" wasn't being used everywhere it was supposed to be + in top.c. Many cosmetic changes, including copyright notices in + all the .c files. Version number is now handled by version.c and + reflects the current patchlevel (which is initially set to 0). + Changed Configure and Makefile to allow configurable variables for + certain commands: shell, cc, awk, install. Updated README and + Porting. Ready to release to the world! + +Mon May 18 1992 - wnl (2.9BETA) + Added modules provided by Christos Zoulas. Replaced screen.c + with one modified by Christos and that will appropriately select + and handle the sgtty, termio, or termios system. Integrated many + other changes recommended by Christos. Fixed (I hope) the "-b" + batch mode display bug. Had to change loadavg to load_avg to avoid + a conflict with 4.4BSD. + +Mon Apr 27 1992 - wnl (2.8BETA) + Added modules provided by Daniel Trinkle. Added patchlevel.h, + but the patch level is not yet reflected in the version number. + Cleaned up m_sunos4.c a little. + +Wed Apr 22 1992 - wnl (2.8BETA) + Major internal reorganization. All of the system dependent stuff + is now really and truly separated from everything else. The + system dependent functions are contained in a separate .c file + called a "module". The Configure script knows how to find and + set up these modules, but the human installer still needs to tell + Configure which module to use (no automagic determination of + machine type---sorry). Added -U option to specify one user's + processes, but there is no corresponding command...yet. Other + changes and improvements too numerous to mention here. Currently + there are only two modules: sunos4 and umax. But after this beta + release is sent around, I expect more to be written. I just hope + that the machine-dependent abstractions don't need to change in + the process. + +Thu Mar 26 1992 - wnl (2.7BETA) + Beta release with minimal architecture support. Updated README + and added a first cut at a Porting guide. Added ioctl TIOCGWINSZ + code from top2.5+ (courtesy of David MacKenzie). I didn't even + try porting the Ultrix support since I don't have access to an + Ultrix machine. + +Fri Oct 11 1991 - wnl (2.6) + This version was not widely released. It contained many changes. + Here are the major ones: + + Put in Vixie's idle process hack. + + Enhanced type field in new_message to handle delayed messages. + + Changed u_process to automatically adjust for varying lines of + output. Management of screenbuf should now be completely contained + in display.c. Removed now extraneous code from CMD_number[12] + portion of command switch in top.c. This was the stuff that dealt + with zeroing out lines in screenbuf. + + Finally made it all work correctly on a 386i. Problems I had to + overcome: kvm_nlist doesn't return 0 on success as advertised (it + returns 1 instead); the results of a kvm_nlist are different + (n_type can be zero even for a symbol that exists). + + Serious rearrangement for processor dependent stuff. All nlists + are now in separate files with the suffix ".nlist". Most machine + specific code is in "machine.c" surrounded by appropriate ifdefs--- + the goal is to eventually have all machine specific code in this + file. Managed to find a way to detect SunOS 4.x at compile-time: + this is contained in the include file "sun.h". Completely changed + the memory display line for SunOS 4.x---it now displays a far + more appropriate report. + + Created the shell script "Configure" to aid in the configuration + step. + + Fixed a bug in init_termcap: it will now tolerate an environment + which does not have TERM defined (thanks to Sam Horrocks for + pointing this out). + +Tue Aug 9 1988 - wnl (2.5) + Added changes to make top work under version 4.0 of the Sun + operating system. Changes were provided by Scott Alexander of the + University of Pennsylvania. Thanks! Compile with "-Dsunos4" to + get them. Virtual memory statistics are not readily accessible + under 4.0, so they don't show up in the output. + +Thu Jul 31 1987 - wnl (2.4) + Fixed a problem with the 4.0 Pyramid code. The label "cp_time" + doesn't exist in the 4.0 kernel anymore. I think the code Carl + sent me wants "percpu" instead. That is what I am using and it + appears to work. 375 code is still untested (at least by me). + Also picked a great deal of lint out of the source. Lint now only + complains about a very few nitpicky things (there are far too many + calls to "printf" to put a "(void)" in front of!), at least under + SunOS. + +Tue Jul 28 1987 - wnl (2.4a) + Added changes for a Symmetrics Computer Systems s/375 machine. + Changes were provided by Paul Vixie. Thanks! According to Mr. + Vixie: "These changes were not made at, by, or for SCS proper. + SCS would probably be interested in them, but so far only the + users' group has them. They were made in February, 1987, to + version 2.1 of the program, by Paul Vixie + (dual!ptsfa!vixie!paul@ucbvax.Berkeley.EDU)." His changes were + integrated into version 2.3 to make version 2.4. + + The SCS peculiarities are summarized in Changes.scs. + +Tue Jun 9 1987 - wnl (2.3 for real) + Changed the includes for the extra code Carl sent me to only + compile on Version 4.0 Pyramid machines. This makes top still + compilable on pre-4.0 Pyramids. Specifically, this code is only + compiled when both "pyr" and "CPUFOUND" are defined. + +Wed Jun 3 1987 - wnl (2.3 with Pyramid additions) + It's been a month and I still haven't done anything about + distributing this version. However, Carl Gutekunst from Pyramid + has sent me some extra patches for some of the Pyramid code. I + just added those and will make them part of 2.3. This fixes the + following Pyramid problems: adds the inclusion of , + uses the correct size for getting the kernel value _ccpu (this bug + affected the Vax version as well), sums the elements of the percpu + array to calculate a cp_time value (for OSx 4.0). + +Fri May 1 1987 - wnl (2.3) + I have finally finished all the changes for better support of + oddbal terminals. Added the low-level routine "clear_eol" which + makes handling terminals without "ce" easy: it uses spaces + instead. All direct uses of "clear_line" outside of screen.c have + been changed to use this primitive. A terminal with "os" is now + handled in such that all situations that need overwriting are + completely avoided (including several commands). This required + some changes to the way commands are translated into action (in + "top.c"). Made several important changes to display.c to prevent + overflowing of any of the fields. Specifically, more than 99 + total processes and a cpu state that reaches 100%. Had to make a + small change to two casts in top.c, because the Sun 3.2 compiler + was giving warnings on them. Added the "-q" option which lets + root run top at a nice of -20 (in case he thinks he really needs it). + +Tue Dec 30 1986 - wnl (2.2) + I think I fixed a bug reported by Julian Onions at Nottingham. + Occasionally, top will core dump when the sprintf in either + i_process or u_process overflows due to an exceptionally + unrealistic time value. I think it highly unlikely that top can + get a bad proc structure (although I suppose it is possible), but + the process time is read from the user structure, and that can + sometimes be part garbage. So, "get_ucpu" checks the value it + returns to make sure its formatted form will not overflow the + sprintf. If this doesn't fix the bug, then more drastic measures + will be necessary. I plan to make this version the official + "top 2.2". [[ This version was never distributed very widely. ]] + +Tue Dec 2 1986 - wnl (2.2c) + Added to top.c the notion of a "failed command". When a command + produces a message (on the message line), an update does not + follow it. Before, the message was written and a new display was + shown---purposefully not overwriting the message. But the + improvements to handle overstriking terminals and terminals + without "ce" clear the screen before every display, which would + erase the message. Now, the message is displayed and top waits + another full time interval before updating the display. This + works much better all around. + +Mon Nov 24 1986 - wnl (2.2b) + Created a new file, utils.c, and made appropriate changes to + Makefile. This new file holds all utility functions that can and + may be used by more than one "module". Improved i_memory and + u_memory (display.c) so that screen updates for the values + displayed are only changed when necessary. Also made the line + look better: the last fixes made for a rather ugly display. + Added the locally defined constant "LoadMax" and added code to + top.c to send the cursor home after a space command is entered if + the load average is higher than "LoadMax". This provides visual + feedback on loaded systems. + +Mon Nov 3 1986 - wnl (2.2a) + Widened the format for memory usage so that it can display 5 + digits. This makes that line look a little ugly---maybe I'll fix + that later. Screen handling now understands "os" and a missing + "ce". It treats them identically: clear the screen between each + display. Screen handling code now uses "cd" when appropriate + (i.e.: when user has shortened the screen). Made i_loadave clear + then screen and took out most of the explicit calls to "clear" in + top.c. This method is cleaner, especially in conjunction with + "os" handling. Added preprocessor variable "RANDOM_PW" for + systems that access the passwd file randomly (Sun's yp and 4.3). + With "RANDOM_PW" set, "getpwuid" is used instead of "getpwnam", + but uid->username mappings are still hashed internally (because + that is still faster than going to disk). + +Mon Oct 6 1986 - wnl (2.1) + A bug with the kill command was pointed out by "dciem!tim"--- + specifying a signal by name did not work correctly. This bug has + been fixed with a simple change to commands.c. Another bug made + the cpu state percentages incorrect the first time they were + displayed. This bug has also been fixed (changed top.c). + +Thu Sep 4 1986 - wnl (2.0, at last) + This is the version that will (hopefully) get released to the + world as top 2.0. + Added the "r" and "k" commands for renice and kill, respectively. + This required adding a way to handle system call errors, and the + addition of the "e" command. Help screen and manual page were + changed to reflect this change. Changed all "#ifdef SUN" directives + to "#ifdef sun", and changed all "#ifdef PYRAMID" directives to + "#ifdef pyr". As much as I hate those choices of preprocessor + names (they too easily conflict with real variable names), it does + make automatic compilation possible---people don't have to change + the Makefile anymore for specific machines. The manual page was + changed to automatically incorporate the defaults as set in the + Makefile (including an infinite value for TOPN) and the way the + manual page is generated by the Makefile was changed to make + maintenance of this information automatic. + +Mon Jul 28 1986 - wnl (still pre 2.0) + Real close now. I put in a new definition for the macro "pagetok" + that does an explicit shift of a constant expression involving + PGSHIFT. Appropriate checks are made if PGSHIFT is to small. + "pagetok" is now used exclusively everywhere to convert kernel + clicks to kilobytes. I added a full blown interactive mode with + the ability to change some of the runtime parameters (how many to + display, time delay, etc.) while top is running. I also + incorporated a few ideas from the net: control characters in the + command name are replaced with '?'; the '-S' option makes the + swapper and pager visible; options have been added to control the + number of displays produced (this makes it easier to make + performance snapshots with top). I have also added the notion of + "infinite" values for number of processes and number of displays. + I fixed a long-standing bug in the uid to username mapping code + that was only aggravated on the pyramids: it was an ill-defined + expression (akin to i = i++). I tweaked the proc_compar routine + for qsort slightly so that stopped processes were more likely to + show up. Manual page was updated to reflect all changes + noticeable to the user. + +Tue Jul 1 1986 - wnl (pre 2.0 -- 1.9999?) + In the process of major revamping on the way to version 2.0. + I have completely done away with curses by adding my own screen + management routines in a separate file (screen.c). The rationale + for this is that top knows a whole lot more about what is and is + not redundant on the screen and can compare simple integer values + where curses would have to compare strings. This has turned out + to be a very big win speed-wise. The proc_compar routine for + sorting has been rewritten to include several more keys. I + decided this was necessary when I noticed that the "top" process + itself kept disappearing off the top 10 list on a Sun-3. All the + processes had the same percentage (0%) and the sort wasn't really + doing anything worthwhile. I changed the expression that computes + memory usage to use the ctob macro instead of just assuming that + pages were 512 bytes. More work still needs to be done before + this version is usable. I changed options-processing to use + getopt and added appropriate incantations to the Makefile. + +Wed Feb 20 1985 - wnl (still 1.8) + Put in the ifdef FOUR_ONE statements to make top still compilable + on a 4.1 system. Apparently, there are some users out there that + need this functionality. Oh well. I don't guarantee any of it, + since I can't test it. Made appropriate changes to README and + final installation related changes to Makefile. + +Sat Feb 2 1985 - wnl (1.8) + Removed all the ifdef FOUR_TWO statements and made "top" into a + 4.2 only program. If someone really wants to still run it on 4.1, + then they can do all the work. We don't have a 4.1 machine + anymore, so I don't even know if the thing still works under 4.1. + Cleaned up the Makefile and the README. Added installation rules + to the Makefile, as requested by several sites. Fixed a very + obscure divide-by-zero bug. Added a second "key" to the qsort + comparison function (proc_compar) so that comparisons are based on + cpu ticks if the percentages are equal (provided by Jonathon + Feiber at Sun). + +Tue Dec 11 1984 - wnl (1.7) + Added the virtual and real memory status line to the header area + (provided by Jonathon Feiber at Sun) + +Tue Nov 20 1984 - wnl (1.6) + Added an "exit" if sbrk's fail. Added changes from Jonathon + Feiber at Sun: ifdef SUN to make top work on Suns (they don't use + doubles in the proc structure), register declarations, check for + getting a user structure that has disappeared since the proc array + was read (it used to die, now it just shows the process as swapped). + +Tue Nov 13 1984 - wnl (1.5) + If the number of displayable processes ("active_procs") was less + than the number of requested processes ("topn"), top would + segmentation fault. This bug has been fixed. Thanks to Prentiss + Riddle at ut-sally for pointing out the existence of this bug. + +Tue Oct 23 1984 - wnl (1.4) + Finally fixed the hash table bug that caused processes owned by + root to sometimes appear with either no name or a different name + that had UID 0 (such as "operator"). Removed all the ifdef DEBUG + blocks to make top ready for distribution to the real world. + +Sun Apr 8 1984 - wnl (still 1.3) + Made some slight changes to the display format. It now looks more + aesthetically pleasing. Added some preprocessor constants so that + the two defaults (number of processes and seconds of delay) easier + to change. + +Thu Apr 5 1984 - wnl (1.3) + Changed the order in which things are done at initialization time. + This way, if an error occurs before starting the main loop, curses + will never get started. Also changed other error handlers so that + endwin() is called before any flavor of exit. Specifying a number + of processes that is more than the screen can handle is no longer + fatal. It displays a warning message and pretends the user + specified the maximum for the screen. Finally cured all the TSTP + blues (well, almost all). I removed my TSTP handler and convinced + the system to always use the one that curses sets up. Turns out + that "sleep" was stepping all over it during a pause. So, I don't + use sleep anymore. The only problem that remains with it now is + redrawing the old display before updating it after a pause. + +Tue Apr 3 1984 - wnl (from 1.0 to 1.2) + I changed the format of the TIME column from just "seconds" to + "minutes:seconds". I also made pausing work correctly. Screen + redraws with an up to date display. For compatibility with 4.2, I + changed the name of the "zero" function to "bzero". The makefile + has been altered to handle versions for 4.1 and 4.2, and README + has been updated to reflect these recent changes. diff --git a/contrib/top/Configure b/contrib/top/Configure new file mode 100755 index 0000000..b02806c --- /dev/null +++ b/contrib/top/Configure @@ -0,0 +1,503 @@ +#!/bin/csh -f +# +# Configuration script for top. +# +# Use with version 3.0 and higher. +# +set PRIME = "/usr/games/primes" +set vars = (module LoadMax topn NominalTopn delay owner group mode random \ + TableSize bindir mandir manext mansty \ + Cmdshell Cmdcc Cmdawk Cmdinstall cdefs) +set fastrack = 0 +set yesno = (no yes) + +onintr byebye + +# make sure that getans is there and ready +if (! -e getans) then + echo 'This package is not complete. The shell file "getans" is missing.' + exit 10 +endif +chmod +x getans + +if ($#argv > 0) then +# fast track configuration + set fastrack = 1 +else +cat <<'EOF' +Configuration for top, version 3.4 + +One moment.... +'EOF' +endif + +# collect file names and module names +ls machine/m_*.c >$$.f +ls machine/m_*.man >$$.m +sed -e 's@^machine/m_@@' -e 's/.c$//' $$.f >$$.n + +# build Make.desc +set descs = `sed -e 's@\.c$@.desc@' $$.f` +sed -e "s@%descs%@$descs@" Make.desc.X >Make.desc + +# build desc files and SYNOPSIS as needed +make -f Make.desc >/dev/null + +if (-e .defaults) then + echo "" + echo "Reading configuration from last time..." + source .defaults + set nodefaults = 0 + if ($fastrack == 1) then + set module = $1 + endif +else + if ($fastrack == 1) then + echo "No previous configuration was found." + set fastrack = 0 + set module = $1 + else + set module = "" + endif + set LoadMax = 5.0 + set topn = 15 + set NominalTopn = 18 + set delay = 5 + set TableSize = 0 + set bindir = /usr/local/bin + set mandir = /usr/man/manl + set manext = l + set mansty = man + set nodefaults = 1 + set Cmdshell = /bin/sh + set Cmdawk = awk + set Cmdinstall = ./install + set Cmdcc = cc + set cdefs = -O +endif +echo "" + +if ($fastrack == 1) then + grep -s $module $$.n >/dev/null + if ($status != 0) then + echo "$module is not recognized. To see a list of available modules" + echo 'run "Configure" with no arguments.' + rm -f $$.[fmn] + exit 1 + endif + set random1 = `expr $random + 1` + cat </dev/null +if ($status != 0) then + echo "That is not a recognized module name." + goto getmod +endif + +# display a full description +sed -e '1,/DESCRIPTION:/d' -e '/^$/,$d' machine/m_${module}.desc + +# verify it +echo "" +./getans "Is this what you want to use?" yesno 1 .$$ +if (`cat .$$` == 0) then + goto getmod +endif +endif + +cat <<'EOF' + +First we need to find out a little bit about the executables needed to +compile top. + +'EOF' +./getans "What is the full path name for the Bourne shell" file "$Cmdshell" .$$ +set Cmdshell = `cat .$$` + +cat <<'EOF' + +Please supply the name of the appropriate command. It need not be a +full path name, but the named command does need to exist somewhere on +the current path. + +'EOF' +./getans "AWK Interpreter" path "$Cmdawk" .$$ +set Cmdawk = `cat .$$` +./getans "C Compiler" path "$Cmdcc" .$$ +set Cmdcc = `cat .$$` + +cat <<'EOF' + +The installer command needs to understand Berkeley-esque arguments: +"-o" for owner, "-g" for group, and "-m" for mode. A shell script +called "install" is distributed with top and is suitable for use by +top. You can specify a different program here if you like, or use +the shell script (the default). + +'EOF' +./getans "Installer" path "$Cmdinstall" .$$ +set Cmdinstall = `cat .$$` + +cat <&/dev/null +if ($status == 0 || -e /etc/passwd.dir || -e /etc/pwd.db) then + set rand = 1 +endif + +if ($rand == 1) then + echo "It looks like you have a passwd file that can be accessed at random." + set pr = 'Do you want top to take advantage of this' +else + echo "It looks like you have conventional passwd file access. Top can take" + echo "advantage of a random access passwd mechanism if such exists. Do" + echo "you want top to assume that accesses to the file /etc/passwd are done" + set pr = 'with random access rather than sequential' +endif + +if ($nodefaults == 1) then + set random = $rand +endif + +./getans "${pr}?" yesno $random .$$ +set random = `cat .$$` + +echo "" +echo "Compiling prime.c" +$Cmdcc $cdefs -o prime prime.c -lm +if ($status != 0) then + echo "Oh well." + rm -f prime +endif + +echo "" + +ypcat passwd.byname >&/tmp/$$.a +if ($status == 0) then + set cnt = `wc -l /tmp/$$.b + grep '^....r..r..' /tmp/$$.b >&/dev/null + if ($status == 1) then + grep '^....r..-..' /tmp/$$.b >&/dev/null + if ($status == 0) then + set t_group = `awk ' { print $4 }' /tmp/$$.b` + set t_mode = 2755 + echo "It looks like only group $t_group can read the memory devices." + else + set t_mode = 4755 + echo "It looks like only root can read the memory devices." + endif + else + set t_mode = 755 + echo "It looks like anybody can read the memory devices." + endif +else + echo "It looks like there are no memory device special files." + set t_mode = 755 +endif +if ($nodefaults) then + set owner = $t_owner + set group = $t_group + set mode = $t_mode +endif +echo "Tell me how to set the following when top is installed:" +./getans "Owner" user "$owner" .$$ +set owner = `cat .$$` +./getans "Group owner" group "$group" .$$ +set group = `cat .$$` +./getans "Mode" integer "$mode" .$$ +set mode = `cat .$$` +rm -f /tmp/$$.b + +echo "" +./getans "Install the executable in this directory" file "$bindir" .$$ +set bindir = `cat .$$` + +echo "" +./getans "Install the manual page in this directory" file "$mandir" .$$ +set mandir = `cat .$$` + +echo "" +./getans "Install the manual page with this extension" string "$manext" .$$ +set manext = `cat .$$` + +echo "" +./getans "Install the manual page as 'man' or 'catman'" string "$mansty" .$$ +set mansty = `cat .$$` + +echo "" +echo "We are done with the questions." + +# Some Unix environments are so poor that their csh doesn't even support +# the "eval" builtin. Check for this before relying on its use to save +# the current configuration. +/bin/csh -c "eval echo foo" >&/dev/null +if ($status == 1) then + echo "Can't save configuration (nonfatal)" +else + echo "Saving configuration..." +# save settings to use as defaults the next time + rm -f .defaults + foreach v ($vars) + set tmp = `eval echo \$$v` + echo set $v = "'$tmp'" >>.defaults + end +endif + +fast: + +# set variables which contain module lists +set modules = `cat $$.f` +set manmodules = `cat $$.m` + +# clean up +rm -f $$.f $$.m $$.n + +# set the link for machine.c +rm -f machine.c machine.o +ln -s machine/m_${module}.c machine.c + +# get definitions out of the module file +set libs = `grep LIBS: machine/m_${module}.desc | sed -e 's/^.[^:]*: *//'` +set cflgs = `grep CFLAGS: machine/m_${module}.desc | sed -e 's/^.[^:]*: *//'` +set tcap = `grep TERMCAP: machine/m_${module}.desc | sed -e 's/^.[^:]*: *//'` + +# default for tcap (termcap) +if ("$tcap" == "") then + set tcap="-ltermcap" +endif + +if ( { grep -s SIGKILL /usr/include/signal.h } ) then + set signal="/usr/include/signal.h" +else + set signal="/usr/include/sys/signal.h" +endif + + +echo "Building Makefile..." +sed -e "s|%topn%|$topn|" \ + -e "s|%delay%|$delay|" \ + -e "s|%owner%|$owner|" \ + -e "s|%group%|$group|" \ + -e "s|%mode%|$mode|" \ + -e "s|%bindir%|$bindir|" \ + -e "s|%mandir%|$mandir|" \ + -e "s|%manext%|$manext|" \ + -e "s|%mansty%|$mansty|" \ + -e "s|%tablesize%|$TableSize|" \ + -e "s|%libs%|$libs|" \ + -e "s|%cflgs%|$cflgs|" \ + -e "s|%termcap%|$tcap|" \ + -e "s|%cdefs%|$cdefs|" \ + -e "s|%modules%|$modules|" \ + -e "s|%manmodules%|$manmodules|" \ + -e "s|%signal%|$signal|" \ + -e "s|%cc%|$Cmdcc|" \ + -e "s|%awk%|$Cmdawk|" \ + -e "s|%install%|$Cmdinstall|" \ + -e "s|%shell%|$Cmdshell|" \ + Makefile.X >Makefile + +echo "Building top.local.h..." +sed -e "s|%LoadMax%|$LoadMax|" \ + -e "s|%TableSize%|$TableSize|" \ + -e "s|%NominalTopn%|$NominalTopn|" \ + -e "s|%topn%|$topn|" \ + -e "s|%delay%|$delay|" \ + -e "s|%random%|$random|" \ + top.local.H >top.local.h + +echo "Building top.1..." +sed -e "s|%topn%|$topn|" \ + -e "s|%delay%|$delay|" \ + top.X >top.1 +if (-e machine/m_${module}.man ) then + cat machine/m_${module}.man >>top.1 +endif + +# clean up +rm -f .$$ + +echo 'Doing a "make clean".' +make clean + +echo 'To create the executable, type "make".' +echo 'To install the executable, type "make install".' +exit 0 + +byebye: +rm -f .$$ $$.[fmn] /tmp/$$.[ab] +exit 1 diff --git a/contrib/top/DISCLAIMER b/contrib/top/DISCLAIMER new file mode 100644 index 0000000..eabbe04 --- /dev/null +++ b/contrib/top/DISCLAIMER @@ -0,0 +1,30 @@ +DISCLAIMER + +"top" is distributed free of charge. It should not be considered an +official product of Argonne National Laboratory. William LeFebvre +supports "top" in his spare time and as time permits. + +NO WARRANTY: + +BECAUSE "top" IS DISTRIBUTED FREE OF CHARGE, THERE IS ABSOLUTELY NO +WARRANTY PROVIDED, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING, ARGONNE NATIONAL LABORATORY, +NORTHWESTERN UNIVERSITY, WILLIAM N. LeFEBVRE AND/OR OTHER PARTIES +PROVIDE "top" "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK +AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD +THE "top" PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL +NECESSARY SERVICING, REPAIR OR CORRECTION. + +IN NO EVENT WILL ARGONNE NATIONAL LABORATORY, NORTHWESTERN UNIVERSITY, +WILLIAM N. LeFEBVRE, AND/OR ANY OTHER PARTY WHO MAY MODIFY AND +REDISTRIBUTE "top", BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST +PROFITS, LOST MONIES, OR OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL +DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE (INCLUDING BUT NOT +LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES +SUSTAINED BY THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH +OTHER PROGRAMS) THE PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. + +So there! diff --git a/contrib/top/FAQ b/contrib/top/FAQ new file mode 100644 index 0000000..d4a458f --- /dev/null +++ b/contrib/top/FAQ @@ -0,0 +1,233 @@ + TOP + Version 3.4 + + William LeFebvre + and a cast of dozens + + +FREQUENTLY ASKED QUESTIONS AND THEIR ANSWERS + +This FAQ is broken out in to several topics. + + +GENERAL + + 1. "Where do I get the latest version of top?" + +The latest version of top is now available at the site "ftp.groupsys.com" in +the directory "/pub/top". It is also available at "eecs.nwu.edu" in the +directory "/pub/top". + + 2. "Is there a web page for top?" + +Not at this time, but I am planning one. When it is finally available, you +will be able to find it at "www.groupsys.com." + + 3. "Is there a mailing list for top?" + +Currently there is a top developers mailing list that is used by beta +testers and other people who help me port the program to various machines. +I am planning a general mailing list for announcements and such, but it is +not yet available. + + 4. "How can I find out when all these things become available?" + +Information about the web site and the mailing list will be made available +in future distributions of top. New distributions will be announced on the +appropriate Usenet newsgroups (including comp.sources.unix). + + 5. "Why does it take so long for a new version of top to go through the + beta test process?" + +This is completely my fault. I have just not had the time recently to give +top the attention it deserves. I thank everyone for their patience, and I +hope that with the recent changes in the direction of my career that I can +spend more time on this. + + 6. "Top is not written in ANSI C. Do you ever plan to change that?" + +Top predates ANSI C by about 5 years. Yeah, it'll get "fixed" eventually. +Probably in 3.5. + + +CONFIGURING + + 7. "Configure said that it saw /proc and is recommending that I install top + setuid root. Is there any way around this? Is it safe?" + +There is no way around it. Complain to POSIX. Every effort has been made +to make top a secure setuid program. However, we cannot guarantee that +there are no security problems associated with this configuration. The +places where top is most vulnerable are the builtin kill and renice +commands. There is no internal top command that causes top to start a shell +as a subprocess. Some SVR4 systems may contain a bug that enables a user to +renice his own processes downward (to lower nice values that are more +favorable for the process). This problem has been fixed for the Solaris 2.x +modules, but may still exist in others. We will hopefully fix this up in +the next release. + + 8. "Why is Configure a c-shell script? I thought c-shell scripts were + evil?" + +They are. :-) I'll probably be rewriting the Configure script for the +next release. + + +COMPILING + + 9. "We just upgraded our operating system to a new version and top broke. + What should we do?" + +Recompile it. Top is very sensitive to changes in internal kernel data +structures. It is not uncommon for a new version of the operating system to +include changes to kernel data structures. + + +RUNNING + +10. "I just finished compiling top and it works fine for root, but when + I try to run it as a regular user it either complains about files + it can't open or it doesn't display all the information it should. + Did I do something wrong?" + +Well, you're just not done. On many operating systems today, access to +many of the kernel memory devices and other system files is restricted to +either root or a particular group. The Configure script figures this out +(usually) and makes sure that the "intsall" rule in the Makefile will +install top so that anyone can run it successfully. However, you have to +*install* it first. Do this with the command "make install". + +11. "Top is (not) displaying idle processes and I don't (do) want it to." + +This default has only changed about a dozen times, and I finally got tired +of people whining about it. Go read the manual page for the current version +and pay special attention to the description of the "TOP" environment +variable. + +12. "We have so much memory in our machine that the memory status display + (the fourth line) ends up being longer than 80 characters. This + completely messes up top's output. Is there a patch?" + +Most modules have been changed to use new memory formatting functions which +will display large values in terms of megabytes instead of kilobytes. This +should fix all occurences of this problem. If you encounter a system where +this large memory display overflow is still occurring, please let me know +(send mail to ). Also note that newer versions of top can +use columns beyond 79, and understand window resizes. So you can always +make your window bigger. + +13. "I tried to compile top with gcc and it doesn't work. I get + compilation errors in the include files, or I get an executable that + dumps core, or top displays incorrect numbers in some of the displays. + What's wrong?" + +Gnu CC likes very much to use its own include files. Not being a gcc +expert, I can't explain why it does this. But I can tell you that if you +upgrade your operating system (say from Solaris 2.4 to Solaris 2.5) after +installing gcc, then the include files that gcc uses will be incorrect, +especially those found in the "sys" directory. Your choices are: (1) +rebuild and reinstall the "standard" include files for gcc (look for a +script in the distribution called "fixincludes"), (2) compile machine.c +with "CFLAGS=-I/usr/include" then make the rest of the object files +normally, or (3) use "cc". + +14. "The cpu state percentages are all wrong, indicating that my machine is + using 95% system time when it is clearly idle. What's wrong?" + +This can happen if you compiled with gcc using the wrong include files. +See the previous question. + + +SUNOS PROBLEMS + +15. "I tried compiling top under SunOS version 4.1.x and it got compile time + errors. Is there a patch?" + +If you try compiling top in a "System V environment" under SunOS (that is, +/usr/5bin is before /usr/bin on your path) then the compilation may fail. +This is mostly due to the fact that top thinks its being compiled on a +System V machine when it really isn't. The only solution is to put /usr/bin +and /usr/ucb before /usr/5bin on your path and try again. + + +SVR4-derived PROBLEMS + +16. "When I run top on my SVR4-derived operating system, it displays all + the system information at the top but does not display any process + information (or only displayes process information for my own + processes). Yet when I run it as root, everything works fine." + +Your system probably uses the pseudo file system "/proc", which is by +default only accessible by root. Top needs to be installed setuid root on +such systems if it is going to function correctly for normal users. + + +SOLARIS PROBLEMS + +17. "Under Solaris 2, when I run top as root it only shows root processes, + or it only shows processes with a PID less than 1000. It refuses to + show anything else. What do I do?" + +You probably compiled it with /usr/ucb/cc instead of the real C compiler. +/usr/ucb/cc is a cc front end that compiles programs in BSD source-level +compatability mode. You do not want that. Make sure that /usr/ucb is not +on your path and try compiling top again. + +18. "Under Solaris 2, I compiled top using what I am sure is the correct + compiler but when I try to run it it complains about missing dynamic + libraries. What is wrong?" + +Check to see if you have LD_LIBRARY_PATH defined in your shell. If you do, +make sure that /usr/ucblib is not on the path anywhere. Then try compiling +top again. + +19. "Under Solaris 2, when I try to run top it complains that it can't open + the library "libucb.so.1". So I changed the LIBS line in m_sunos5.c + to include -R/usr/ucblib to make sure that the dynamic linker will look + there when top runs. I figured this was just an oversight. Was I + right?" + +No, you were not right. As distributed, top requires NO alterations for +successful compilation and operations under Solaris 2.0, 2.1, 2.2, 2.3, 2.4, +and 2.5. You probably compiled top with /usr/ucb/cc instead of the real C +compiler. See FAQ #10 for more details. + + +SCO PROBLEMS + +20. "When I try to run Configure, it complains about a syntax error." + +Some versions of SCO's csh do not understand the syntax "$<". This breaks +Configure. You'll just have to hack around it for now: the Configure script +is going to be completely redone in the near future anyway. + + +SVR42 PROBLEMS + +21. "The load average and memory displays don't work right. Why?" + +This is a known bug with the svr42 module. The problem has been traced down +to a potential bug in the "mem" driver. The author of the svr42 module is +working on a fix. + + +STILL STUCK + +22. I'm still stuck. To whom do I report problems with top?" + +The most common problems are caused by top's sensitivity to internal kernel +data structures. So make sure that you are using the right include files, +and make sure that you test out top on the same machine where you compiled +it. Sun's BSD Source Compatability Mode is also a common culprit. Make +sure you aren't using either /usr/ucb/cc or any of the libraries in +/usr/ucblib. Finally, make sure you are using the correct module. If there +does not appear to be one appropriate for your computer, then top probably +will not work on your system. + +If after reading all of this file and checking everything you can you are +still stuck, then send mail to "wnl@groupsys.com". I will answer your mail +when I have time. Please bear with me in that regard! If it looks like the +problem is machine-specific, I will forward the report along to the module's +author. If you would like to converse directly with the module author, the +authors' names are listed at the beginning of the module .c file in the +"machine" directory. diff --git a/contrib/top/INSTALL b/contrib/top/INSTALL new file mode 100644 index 0000000..f4cfe49 --- /dev/null +++ b/contrib/top/INSTALL @@ -0,0 +1,165 @@ + TOP + Version 3.4 + + William LeFebvre + and a cast of dozens + +INSTALLATION + +Configuration and installation of top is very straightforward. After +unpacking the sources, run the script "Configure". It will present you +with a series of questions, all of which should be explained in the +presentation. After you have answered all the questions, "Configure" will +perform all the necessary configuration. Once this is finished, type +"make install". Make will compile the sources then install the resulting +executable and manual page in the appropriate places. + +The most difficult step in the configuration is the choice of an +appropriate machine-specific module. The Configure script gives you a +list of choices complete with brief descriptions of when each choice is +appropriate. Each module is contained in a separate c file in the +directory "machine". The module contains all of the machine-specific code +that makes top work correctly on the architecture in question. All of the +code in the top-level directory is machine-independent (or at least +strives to be). Hints for some module choices that are not obvious are +given at the end of this file. + +The first comment in each c file in that directory contains the synopsis +AND a detailed description of the machines for which that module is +appropriate. It also contains a list of authors for that module. If you +are really stumped in this choice, use grep to find your machine +manufacturer's name or operating system name in machine/*.c. If you still +can't find one that is appropriate, then chances are very good that one +hasn't been written yet. If that is the case, then you are out of luck. + +HANDLING MULTIPLE ARCHITECTURES + +If you need to recompile top for a different architecture (that is, using +a different module) you need to reconfigure top. A short cut is available +to make this a little easier. If all of your previous answers to the +configuration questions (except for the module name of course) are +adequate for the new architecture, then you can just use the command +"Configure ". The configuration script will reconfigure top +using the new module and all the answers you gave last time. It will +finish with a "make clean". Once that completes, type "make install" +and make will compile the sources and do the installation. + +HANDLING MULTIPLE OS VERSIONS + +By far the most frequently received bug report for top is something like +this: "We just upgraded our operating system to version 99.9.9.9 and top +broke. What should we do?" The simple answer is "recompile". + +Top is very sensitive to changes in internal kernel data structures +(especially the proc and user structures). Some operating systems +(especially SunOS) are notorious for changing these structure in every +minor release of the OS. This means that a top executable made under one +version of the OS will not always work correctly (if even at all) under +another version. This is just one of those tough facts of life. There is +really no way around it. + +To make life even worse, some operating systems (SunOS again) will use +slightly different proc and user structures on different models. For +example, "top" built on a SparcStation 2 will not run correctly on a +SparcStation 10, even if they are both running SunOS 4.1.3. These +unfortunate circumstances make maintaining top very difficult, especially +in an environment that runs several different versions of the same +operating system. + +But there is hope. If your operating system has a properly functioning +"uname" command then you can handle this problem rather gracefully. +Included in the distribution is a shell file called "metatop". All this +shell file does is: + + exec top-`uname -m`-`uname -r` "$@" + +So when you run this script, it execs a filename that is unique to your +specific machine architecture and your OS revision number. + +To use "metatop", do the following: + + . on any machine, run Configure and choose the module that is + appropriate for the machine + . for all machines which use the same module: + . group machines according to machine architecture AND OS + revision number (i.e.: sun4-4.1.1, sun4c-4.1.1, sun4c-4.1.2, + sun4-4.1.3, sun4c-4.1.3, sun4m-4.1.3, ...) + . for each group, choose one machine from that group and on it + run "make clean; make installmeta". + + +The "installmeta" rule in the makefile will insure that top is compiled, +install the shell file "metatop" as "top", then install the executable +"top" with a name appropriate to the machine architecture and OS revision. + + +HINTS FOR CHOOSING THE CORRECT MODULE: + +SOLARIS 2.x + +For Solaris versions 2.0 thru 2.3, use the module sunos5. For Solaris +versions 2.4 and higher (including 2.5 and 2.5.1) use the module sunos54. + +SUNOS 4.x AND MULTIPROCESSOR ARCHITECTURES + +First, we need to be speaking the same language: + +sun4 a regular sparc sun 4 architecture machine (sparc station 1, + sparc station 2, IPC, SLC, etc.) + +sun4m a multiprocessor sparc (Sparc 10, 4/670, 4/690) + +I intended to write the sunos4 module so that an executable compiled on a +sun4m machine would work correctly on a sun4 machine. Unfortunately my +experiments indicate that this cannot be done. It turns out that the user +structure is so different between these two architectures that nothing +short of a serious hack will make the same executable work correctly on +both machines. I recommend that you use the separate module "sunos4mp" +when making an executable for a sun4m architecture, and use "sunos4" when +making an executable for sun4 or sun4c architectures. + +DIGITAL UNIX V4.0 + +This is the successor to DECOSF/1. Use the module decosf1. + +SOLBOURNE OPERATING SYSTEM (OS/MP) + +If you are running OS/MP version 4.1A, then use the module "osmp4.1a". + +If you are running a version of OS/MP OLDER than 4.1A (that is, one +of its predecessors), use the module "sunos4". + +If you are running OS/MP 4.1B or LATER, use the module "sunos4mp". + +HP/UX OPERATING SYSTEM + +The module hpux8 works on all version 8 systems. Some say that it works +with version 9 as well, but one user did send me a separate module for +version 9. This module has only been tested on series 800 machines. I +would recommend the following for those running version 9: try hpux9 and +if it doesn't work then try hpux8. If neither work, then send mail to me +and/or the modules' authors. Another note: we have a model 730 supposedly +running version 9.01. The module hpux9 did not compile successfully, but +the module hpux8 worked fine. The module hpux10 works on all revisions of +HP/UX 10 except 10.10, where HP removed the definition of the proc structure +from the system include files. + +NET/2 386BSD SYSTEMS + +If your version of the operating system has patchkit 2.4 installed, +then you will need to modify machine/m_386bsd.c and uncomment the +definition of PATCHED_KVM. This patchkit makes what more than a few +people believe to be a wholly unnecessary patch to the way the kvm +routines work. + +A/UX SYSTEMS + +There is a module for A/UX 3.0 and 3.1. Whether or not it works for +any other version is not known. Proceed at your own risk. + +Although AUX does not generally have a renice systemcall, it can be +implemented by tweeking kernel memory. The flag IMPLEMENT_SETPRIORITY +controls the inclusion of this code. It is off be default. While +such a simple hack should not be difficult to get right, USE THIS +FEATURE AT YOUR OWN RISK! + diff --git a/contrib/top/Make.desc.X b/contrib/top/Make.desc.X new file mode 100644 index 0000000..cde4bcb --- /dev/null +++ b/contrib/top/Make.desc.X @@ -0,0 +1,23 @@ +# Makefile for .desc files + +# This makefile is the prototype for "Make.desc", which is used by +# top's Configure script to build .desc files and the SYNOPSIS file. +# Configure then uses these files to ask appropriate questions. + +# Written by William LeFebvre, Argonne National Laboratory +# (formerly of Northwestern University and Rice University) + +# DO NOT EDIT "Make.desc"!!! Make changes to "Make.desc.X", +# then "make veryclean", then run "Configure". + +DESCS=%descs% + +.SUFFIXES: .desc + +.c.desc: + sed -e '/^$$/,$$d' -e 's,^[/ *]*,,' $< > $@ + +all: SYNOPSIS + +SYNOPSIS: $(DESCS) + grep SYNOPSIS: $(DESCS) | sed -e 's@^machine/m_@@' -e 's@.desc:.[^:]*: *@:@' >SYNOPSIS diff --git a/contrib/top/Makefile.X b/contrib/top/Makefile.X new file mode 100644 index 0000000..0b79d9f --- /dev/null +++ b/contrib/top/Makefile.X @@ -0,0 +1,130 @@ +# Makefile for "top", a top 10 process display for Unix +# +# This makefile is for top, version 3 +# +# Written by William LeFebvre, Argonne National Laboratory +# (formerly of Northwestern University and Rice University) + +# DO NOT EDIT "Makefile"!!!! Make changes to "Makefile.X" and rerun +# Configure. + +# Executables (these should be obvious): + +SHELL = %shell% +CC = %cc% +AWK = %awk% +INSTALL = %install% + +# installation information: +# OWNER - name (or uid) for the installed executable's owner +# GROUP - group name (or gid) for the installed executable's group +# MODE - mode for the installed executable (should start with a 0) +# BINDIR - directory where the executable should live +# MANDIR - directory where the manual page should live +# MANEXT - installed man pages end in .$(MANEXT) +# MANSTY - "man" or "catman" depending on what's to be installed +# SIGNAL - or ; the one with signal definitions +# TROFF - most appropriate troff command + +OWNER = %owner% +GROUP = %group% +MODE = %mode% +BINDIR = %bindir% +MANDIR = %mandir% +MANEXT = %manext% +MANSTY = %mansty% +SIGNAL = %signal% + +# Values for the two defaults in "top": +# TOPN - default number of processes to display +# DELAY - default delay between updates +# +# set TOPN to -1 to indicate infinity (so that top will display as many +# as the screen will hold). + +TOPN = %topn% +DELAY = %delay% + +TARFILES = README INSTALL DISCLAIMER FAQ ADVERTISEMENT \ + Changes Configure Porting \ + Makefile.X Make.desc.X getans install \ + top.c commands.c display.c screen.c username.c \ + utils.c version.c getopt.c prime.c \ + boolean.h display.h layout.h loadavg.h screen.h \ + machine.h patchlevel.h top.h top.local.H os.h utils.h \ + sigconv.awk top.X m-template metatop \ + machine +CFILES = top.c commands.c display.c screen.c username.c \ + utils.c version.c getopt.c machine.c +OBJS = top.o commands.o display.o screen.o username.o \ + utils.o version.o getopt.o machine.o + +CDEFS = %cdefs% +LIBS = %libs% +TERMCAP = %termcap% + +CFLAGS = %cflgs% $(CDEFS) +LINTFLAGS = -x $(CDEFS) + +all: Makefile top.local.h top + +Makefile: Makefile.X + @echo 'You need to run the script "Configure" before running "make".' + exit 10 + +top.local.h: top.local.H + @echo 'You need to run the script "Configure" before running "make".' + exit 10 + +top: $(OBJS) + rm -f top + $(CC) -o top $(OBJS) $(TERMCAP) -lm $(LIBS) + +lint: sigdesc.h + $(LINT) $(LINTFLAGS) $(CFILES) + +# include file dependencies +top.o: boolean.h display.h screen.h top.h top.local.h utils.h machine.h +commands.o: boolean.h sigdesc.h utils.h +display.o: boolean.h display.h layout.h screen.h top.h top.local.h utils.h +machine.o: top.h machine.h utils.h +screen.o: boolean.h screen.h +utils.o: top.h +version.o: top.h patchlevel.h +username.o: top.local.h utils.h + +# automatically built include file +sigdesc.h: sigconv.awk $(SIGNAL) + $(AWK) -f sigconv.awk $(SIGNAL) >sigdesc.h + +tar: + rm -f top.tar machine/*.desc machine/*~ + tar cvf top.tar $(TARFILES) + +shar: + rm -f top.shar* machine/*.desc + makekit -ntop.shar. -t"Now read README and INSTALL, then run Configure" machine $(TARFILES)/* + +clean: + rm -f *.o top core core.* sigdesc.h + +veryclean: clean + rm -f Make.desc machine/*.desc .defaults top.tar SYNOPSIS Makefile top.local.h top.1 machine.c prime + +install: top top.1 install-top install-$(MANSTY) + +install-top: + $(INSTALL) -o $(OWNER) -m $(MODE) -g $(GROUP) top $(BINDIR) + +install-man: + $(INSTALL) top.1 $(MANDIR)/top.$(MANEXT) + +install-catman: + tbl top.1 | nroff -man > $(MANDIR)/top.$(MANEXT) + +installmeta: top top.1 + $(INSTALL) -o $(OWNER) -m 755 -g $(GROUP) metatop $(BINDIR)/top + @echo $(INSTALL) -o $(OWNER) -m $(MODE) -g $(GROUP) top $(BINDIR)/top-`uname -m`-`uname -r` + @$(INSTALL) -o $(OWNER) -m $(MODE) -g $(GROUP) \ + top $(BINDIR)/top-`uname -m`-`uname -r` + $(INSTALL) top.1 $(MANDIR)/top.$(MANEXT) diff --git a/contrib/top/Porting b/contrib/top/Porting new file mode 100644 index 0000000..7fd3ff4 --- /dev/null +++ b/contrib/top/Porting @@ -0,0 +1,165 @@ +Instructions for porting top to other architectures. + +This is still a preliminary document. Suggestions for improvement are +most welcome. + +My address is now "lefebvre@dis.anl.gov". + +Before you embark on a port, please send me a mail message telling me +what platform you are porting top to. There are three reasons for +this: (1) I may already have a port, (2) module naming needs to be +centralized, (3) I want to loosely track the various porting efforts. +You do not need to wait for an "okay", but I do want to know that you +are working on it. And of course, once it is finished, please send me +the module files so that I can add them to the main distribution! + +---------- + +There is one set of functions which extract all the information that +top needs for display. These functions are collected in to one file. +To make top work on a different architecture simply requires a +different implementation of these functions. The functions for a +given architecture "foo" are stored in a file called "m_foo.c". The +Configure script looks for these files and lets the configurer choose +one of them. This file is called a "module". The idea is that making +top work on a different machine only requires one additional file and +does not require changes to any existing files. + +A module template is included in the distribution, called "m-template". +To write your own module, it is a good idea to start with this template. +If you architecture is similar to one for which a module already +exists, then you can start with that module instead. If you do so, +remember to change the "AUTHOR" section at the top! + +The first comment in a module contains information which is extracted +and used by Configure. This information is marked with words in all +capitals (such as "SYNOPSIS:" and "LIBS:"). Go look at m-template: it +is fairly self-explanatory. The text after "LIBS:" (on the same line) +is extracted and included in the LIBS definition of the Makefile so +that extra libraries which may be necessary on some machines (such as +"-lkvm") can be specified in the module. The text after "CFLAGS:" +(on the same line) is extracted and included as flags in the "CFLAGS" +definition of the Makefile (thus in every compilation step). This is +used for rare circumstances only: please don't abuse this hook. + +Some operating systems have idiosyncrasies which will affect the form +and/or content of the information top displays. You may wish to +document such anomalies in the top man page. This can be done by adding +a file called m_{modulename}.man (where {modulename} is replaced with +the name of the module). Configure will automatically add this file to +the end of the man page. See m_sunos4.man for an example. + +A module is concerned with two structures: + +The statics struct is filled in by machine_init. Each item is a +pointer to a list of character pointers. The list is terminated +with a null pointer. + +struct statics +{ + char **procstate_names; /* process state names */ + char **cpustate_names; /* cpu state names */ + char **memory_names; /* memory information names */ +}; + +The system_info struct is filled in by get_system_info and +get_process_info. + +struct system_info +{ + int last_pid; /* last pid assigned (0 means non-sequential assignment) */ + double load_avg[NUM_AVERAGES]; /* see below */ + int p_total; /* total number of processes */ + int p_active; /* number of procs considered "active" */ + int *procstates; /* array of process state counters */ + int *cpustates; /* array of cpustate counters */ + int *memory; /* memory information */ +}; + +The last three pointers each point to an array of integers. The +length of the array is determined by the length of the corresponding +_names array in the statics structure. Furthermore, if an entry in a +_names array is the empty string ("") then the corresponding value in +the value array will be skipped over. The display routine displays, +for example, the string procstate_names[0] then the number +procstates[0], then procstate_names[1], procstates[1], etc. until +procstate_names[N] == NULL. This allows for a tremendous amount of +flexibility in labeling the displayed values. + +"procstates" and "memory" are displayed as straight integer values. +Values in "cpustates" are displayed as a percentage * 10. For +example, the (integer) value 105 is displayed as 10.5%. + +These routines must be defined by the machine dependent module. + +int machine_init(struct statics *) + + returns 0 on success and -1 on failure, + prints error messages + +char *format_header(char *) + + Returns a string which should be used as the header for the + process display area. The argument is a string used to label + the username column (either "USERNAME" or "UID") and is always + 8 characters in length. + +void get_system_info(struct system_info *) + +caddr_t get_process_info(struct system_info *, int, int, int (*func)()) + + returns a handle to use with format_next_process + +char *format_next_process(caddr_t, char *(*func)()) + + returns string which describes next process + +int proc_compare(caddr_t, caddr_t) + + qsort comparison function + +uid_t proc_owner(pid_t) + + Returns the uid owner of the process specified by the pid argument. + This function is VERY IMPORTANT. If it fails to do its job, then + top may pose a security risk. + + +get_process_info is called immediately after get_system_info. In +fact, the two functions could be rolled in to one. The reason they +are not is mostly historical. + +Top relies on the existence of a function called "setpriority" to +change a process's priority. This exists as a kernel call on most 4.3 +BSD derived Unixes. If neither your operating system nor your C +library supplies such a function, then you will need to add one to the +module. It is defined as follows: + + int setpriority (int dummy, int who, int niceval) + + For the purposes of top, the first argument is meaningless. + The second is the pid and the third is the new nice value. + This function should behave just like a kernel call, setting + errno and returning -1 in case of an error. This function MUST + check to make sure that a non-root user does not specify a nice + value less than the process's current value. If it detects such + a condition, it should set errno to EACCES and return -1. + Other possible ERRNO values: ESRCH when pid "who" does not exist, + EPERM when the invoker is not root and not the same as the + process owner. + +Note that top checks process ownership and should never call setpriority +when the invoker's uid is not root and not the same as the process's owner +uid. + + +The file "machine.h" contains definitions which are useful to modules +and to top.c (such as the structure definitions). You SHOULD NOT need +to change it when porting to a new platform. + +Porting to a new platform should NOT require any changes to existing +files. You should only need to add m_ files. If you feel you need a +change in one of the existing files, please contact me so that we can +discuss the details. I want to keep such changes as general as +possible. + diff --git a/contrib/top/README b/contrib/top/README new file mode 100644 index 0000000..82631a7 --- /dev/null +++ b/contrib/top/README @@ -0,0 +1,178 @@ + TOP + Version 3.4 + + William LeFebvre + and a cast of dozens + + +If you do not want to read this entire file, then at least read +the section at the end entitled "KNOWN PROBLEMS". + +If you are having any problems getting top to work, please read the +file "FAQ" *before* contacting me. Thank you. + +"top" is a program that will give continual reports about the state of +the system, including a list of the top cpu using processes. Version 3 +of "top" has three primary design goals: provide an accurate snapshot of +the system and process state, not be one of the top processes itself, be +as portable as possible. + +Version 3 has many bug fixes from version 2.5, and it has also been +reorganized in a major way to make it easy to port to other platforms. +All system dependent code is now contained in one file. + +Top now includes a configuration script called "Configure". It helps +the installer choose the correct parameters for this particular +installation. This script MUST be run before attempting to compile top. + +Top requires read access to the memory files "/dev/kmem" and "/dev/mem" +as well as the system image "/vmunix". Some installations have these +files protected from general access. These sites would have to install +this program in the same way that programs such as "ps" are installed. +In addition, on those Unix variants that support the proc filesystem +(such as SVR4 and Solaris 2), top requires read access to all the files +in /proc: typically dictating that top be installed setuid to root. + +CAVEAT: version 3 of top has internal commands that kill and renice +processes. Although I have taken steps to insure that top makes +appropriate checks with these commands, I cannot guarantee that these +internal commands are totally secure. IF YOU INSTALL top as a SETUID +program, you do so AT YOUR OWN RISK! I realize that some operating +systems will require top to run setuid, and I will do everything I can +to make sure that top is a secure setuid program. + +Configure will ask you to input values for certain parameters. Before +each parameter, Configure will display a description of what the +parameter does. Read the description and choose an appropriate value. +Sometimes a default will appear in brackets. Typing just return will +choose the default. + +System support now takes the form of "modules". Adding support for +a different architecture requires only adding a module. Configure +asks which module to use when it is configuring top. See the file +"Porting" for a description of how to write your own module. + +To compile and install "top", read the file "INSTALL" and follow the +directions and advice contained therein. + +Once you have created a binary for one particular type of machine, you +can reconfigure for another type with "./Configure modulename" where +"modulename" is replaced with the appropriate module name. All other +parameter values are kept the same. Note that in some cases this may +not be appropriate. + +If you make any kind of change to "top" that you feel would be +beneficial to others who use this program, or if you find and fix a bug, +please send me the change. + +Be sure to read the FAQ enclosed with the distrubution. It contains +answers to the most commonly asked questions about the configuration, +installation, and operation of top. + +AVAILABILITY + +The latest version of "top" is now being made available via anonymous +FTP from the host "ftp.groupsys.com" in the directory "/pub/top". +Additional modules will be made available in the directory +"/pub/top/m". The site "eecs.nwu.edu" will continue to house copies +of the distribution as well. + +Here are HTML links for the two best "top" archive sites: + +Top archive (eecs.nwu.edu) + +New releases will be posted to comp.sources.unix as they become +available. Sites which arhive that newsgroup will also contain copies +of the distribution. + +KNOWN PROBLEMS: + +Gnu CC + +Compiling via Gnu CC continued to be the source of most of the +questions I receive. By far the most common mistake made by those +attempting to compile top with Gnu CC is out of date include files. +When the operating system is upgraded, the include files that are part +of the gcc package MUST also be updated. Gcc maintains its own +include files. Even a minor OS upgrade can involve changes to some of +the kernel's internal data structures, which are defined in include +files in "sys". Top is very sensitive to these changes. If you are +compiling with gcc and experience any sort of strange problems, please +make sure the include files you are using are up to date BEFORE +sending me a bug report. Look in the gcc source distribution for the +shell script "fixincludes". + +HP/UX 10.10 + +In their infinite wisdom, the folks at HP have decided that mere mortals +such as you and I don't need to know what the kernel's proc structure looks +like. To that end, they have removed all useful content from the include +file in version 10.10. As a result, top will not compile +under 10.10. What HP is trying to accomplish with this move is to force +iconoclasts such as myself to use "pstat" for collecting all process +information. I have no immediate solution for this problem, but hope to +obtain a sufficiently complete definition of "struct proc" at some point in +the near future. Stay tuned. + +DIGITAL UNIX 4.0 (DECOSF/1 V4.0) + +A user has reported that idle processes are not displayed regardless +of the flags used when invoking top. We have not had time to track +this problem down. + +DECOSF/1 V3.0 + +There is a bug either in the module, in utils.c, or in DEC's optimizer that +is tickled by the decosf1 module when compiled under V3.0 (and perhaps +earlier versions). Top compiled using DEC's compiler with optimization +will consistently produce a segmentation fault (in format_next_process +while calling sprintf). To work around this problem, either compile top +with gcc or turn off optimization (compile without -O). We think that +one of the bugs fixed in utils.c fixed this problem as well, but we are +not certain. + + +System V R 4.2 + +Load average and memory displays do not work. The problem has been +traced down to a potential bug in the "mem" driver. The author +of the svr42 module is working on a fix. + + + +GRATITUDE + +My perpetual thanks to all the people who have helped me support top +on so many platforms. Without these people, top would not be what it +is. Here is a partial list of contributors and other individuals. + + Robert Boucher + Marc Cohen + David Cutter + Casper Dik + Charles Hedrick + Andrew Herbert + Jeff Janvrin + Torsten Kasch + Petri Kutvonen + William L. Jones + Tim Pugh + Steve Scherf + Phillip Wu + +(My apologies if I missed anyone.) + + +AUTHOR + + William LeFebvre + Group sys Consulting + wnl@groupsys.com + + + U.S. Mail address: + William LeFebvre + 170 Colton Crest Drive + Alpharetta, GA 30202 + (770) 813-3224 diff --git a/contrib/top/boolean.h b/contrib/top/boolean.h new file mode 100644 index 0000000..c6bcf4d --- /dev/null +++ b/contrib/top/boolean.h @@ -0,0 +1,5 @@ +/* My favorite names for boolean values */ +#define No 0 +#define Yes 1 +#define Maybe 2 /* tri-state boolean, actually */ + diff --git a/contrib/top/commands.c b/contrib/top/commands.c new file mode 100644 index 0000000..a848231 --- /dev/null +++ b/contrib/top/commands.c @@ -0,0 +1,509 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * This file contains the routines that implement some of the interactive + * mode commands. Note that some of the commands are implemented in-line + * in "main". This is necessary because they change the global state of + * "top" (i.e.: changing the number of processes to display). + */ + +#include "os.h" +#include +#include +#include +#include +#include + +#include "sigdesc.h" /* generated automatically */ +#include "boolean.h" +#include "utils.h" + +extern int errno; + +extern char *copyright; + +/* imported from screen.c */ +extern int overstrike; + +int err_compar(); +char *err_string(); + +/* + * show_help() - display the help screen; invoked in response to + * either 'h' or '?'. + */ + +show_help() + +{ + printf("Top version %s, %s\n", version_string(), copyright); + fputs("\n\n\ +A top users display for Unix\n\ +\n\ +These single-character commands are available:\n\ +\n\ +^L - redraw screen\n\ +q - quit\n\ +h or ? - help; show this text\n", stdout); + + /* not all commands are availalbe with overstrike terminals */ + if (overstrike) + { + fputs("\n\ +Other commands are also available, but this terminal is not\n\ +sophisticated enough to handle those commands gracefully.\n\n", stdout); + } + else + { + fputs("\ +d - change number of displays to show\n\ +e - list errors generated by last \"kill\" or \"renice\" command\n\ +i - toggle the displaying of idle processes\n\ +I - same as 'i'\n\ +k - kill processes; send a signal to a list of processes\n\ +n or # - change number of processes to display\n", stdout); +#ifdef ORDER + fputs("\ +o - specify sort order (size, res, cpu, time)\n", stdout); +#endif + fputs("\ +r - renice a process\n\ +s - change number of seconds to delay between updates\n\ +u - display processes for only one user (+ selects all users)\n\ +\n\ +\n", stdout); + } +} + +/* + * Utility routines that help with some of the commands. + */ + +char *next_field(str) + +register char *str; + +{ + if ((str = strchr(str, ' ')) == NULL) + { + return(NULL); + } + *str = '\0'; + while (*++str == ' ') /* loop */; + + /* if there is nothing left of the string, return NULL */ + /* This fix is dedicated to Greg Earle */ + return(*str == '\0' ? NULL : str); +} + +scanint(str, intp) + +char *str; +int *intp; + +{ + register int val = 0; + register char ch; + + /* if there is nothing left of the string, flag it as an error */ + /* This fix is dedicated to Greg Earle */ + if (*str == '\0') + { + return(-1); + } + + while ((ch = *str++) != '\0') + { + if (isdigit(ch)) + { + val = val * 10 + (ch - '0'); + } + else if (isspace(ch)) + { + break; + } + else + { + return(-1); + } + } + *intp = val; + return(0); +} + +/* + * Some of the commands make system calls that could generate errors. + * These errors are collected up in an array of structures for later + * contemplation and display. Such routines return a string containing an + * error message, or NULL if no errors occurred. The next few routines are + * for manipulating and displaying these errors. We need an upper limit on + * the number of errors, so we arbitrarily choose 20. + */ + +#define ERRMAX 20 + +struct errs /* structure for a system-call error */ +{ + int errno; /* value of errno (that is, the actual error) */ + char *arg; /* argument that caused the error */ +}; + +static struct errs errs[ERRMAX]; +static int errcnt; +static char *err_toomany = " too many errors occurred"; +static char *err_listem = + " Many errors occurred. Press `e' to display the list of errors."; + +/* These macros get used to reset and log the errors */ +#define ERR_RESET errcnt = 0 +#define ERROR(p, e) if (errcnt >= ERRMAX) \ + { \ + return(err_toomany); \ + } \ + else \ + { \ + errs[errcnt].arg = (p); \ + errs[errcnt++].errno = (e); \ + } + +/* + * err_string() - return an appropriate error string. This is what the + * command will return for displaying. If no errors were logged, then + * return NULL. The maximum length of the error string is defined by + * "STRMAX". + */ + +#define STRMAX 80 + +char *err_string() + +{ + register struct errs *errp; + register int cnt = 0; + register int first = Yes; + register int currerr = -1; + int stringlen; /* characters still available in "string" */ + static char string[STRMAX]; + + /* if there are no errors, return NULL */ + if (errcnt == 0) + { + return(NULL); + } + + /* sort the errors */ + qsort((char *)errs, errcnt, sizeof(struct errs), err_compar); + + /* need a space at the front of the error string */ + string[0] = ' '; + string[1] = '\0'; + stringlen = STRMAX - 2; + + /* loop thru the sorted list, building an error string */ + while (cnt < errcnt) + { + errp = &(errs[cnt++]); + if (errp->errno != currerr) + { + if (currerr != -1) + { + if ((stringlen = str_adderr(string, stringlen, currerr)) < 2) + { + return(err_listem); + } + (void) strcat(string, "; "); /* we know there's more */ + } + currerr = errp->errno; + first = Yes; + } + if ((stringlen = str_addarg(string, stringlen, errp->arg, first)) ==0) + { + return(err_listem); + } + first = No; + } + + /* add final message */ + stringlen = str_adderr(string, stringlen, currerr); + + /* return the error string */ + return(stringlen == 0 ? err_listem : string); +} + +/* + * str_adderr(str, len, err) - add an explanation of error "err" to + * the string "str". + */ + +str_adderr(str, len, err) + +char *str; +int len; +int err; + +{ + register char *msg; + register int msglen; + + msg = err == 0 ? "Not a number" : errmsg(err); + msglen = strlen(msg) + 2; + if (len <= msglen) + { + return(0); + } + (void) strcat(str, ": "); + (void) strcat(str, msg); + return(len - msglen); +} + +/* + * str_addarg(str, len, arg, first) - add the string argument "arg" to + * the string "str". This is the first in the group when "first" + * is set (indicating that a comma should NOT be added to the front). + */ + +str_addarg(str, len, arg, first) + +char *str; +int len; +char *arg; +int first; + +{ + register int arglen; + + arglen = strlen(arg); + if (!first) + { + arglen += 2; + } + if (len <= arglen) + { + return(0); + } + if (!first) + { + (void) strcat(str, ", "); + } + (void) strcat(str, arg); + return(len - arglen); +} + +/* + * err_compar(p1, p2) - comparison routine used by "qsort" + * for sorting errors. + */ + +err_compar(p1, p2) + +register struct errs *p1, *p2; + +{ + register int result; + + if ((result = p1->errno - p2->errno) == 0) + { + return(strcmp(p1->arg, p2->arg)); + } + return(result); +} + +/* + * error_count() - return the number of errors currently logged. + */ + +error_count() + +{ + return(errcnt); +} + +/* + * show_errors() - display on stdout the current log of errors. + */ + +show_errors() + +{ + register int cnt = 0; + register struct errs *errp = errs; + + printf("%d error%s:\n\n", errcnt, errcnt == 1 ? "" : "s"); + while (cnt++ < errcnt) + { + printf("%5s: %s\n", errp->arg, + errp->errno == 0 ? "Not a number" : errmsg(errp->errno)); + errp++; + } +} + +/* + * kill_procs(str) - send signals to processes, much like the "kill" + * command does; invoked in response to 'k'. + */ + +char *kill_procs(str) + +char *str; + +{ + register char *nptr; + int signum = SIGTERM; /* default */ + int procnum; + struct sigdesc *sigp; + int uid; + + /* reset error array */ + ERR_RESET; + + /* remember our uid */ + uid = getuid(); + + /* skip over leading white space */ + while (isspace(*str)) str++; + + if (str[0] == '-') + { + /* explicit signal specified */ + if ((nptr = next_field(str)) == NULL) + { + return(" kill: no processes specified"); + } + + if (isdigit(str[1])) + { + (void) scanint(str + 1, &signum); + if (signum <= 0 || signum >= NSIG) + { + return(" invalid signal number"); + } + } + else + { + /* translate the name into a number */ + for (sigp = sigdesc; sigp->name != NULL; sigp++) + { + if (strcmp(sigp->name, str + 1) == 0) + { + signum = sigp->number; + break; + } + } + + /* was it ever found */ + if (sigp->name == NULL) + { + return(" bad signal name"); + } + } + /* put the new pointer in place */ + str = nptr; + } + + /* loop thru the string, killing processes */ + do + { + if (scanint(str, &procnum) == -1) + { + ERROR(str, 0); + } + else + { + /* check process owner if we're not root */ + if (uid && (uid != proc_owner(procnum))) + { + ERROR(str, EACCES); + } + /* go in for the kill */ + else if (kill(procnum, signum) == -1) + { + /* chalk up an error */ + ERROR(str, errno); + } + } + } while ((str = next_field(str)) != NULL); + + /* return appropriate error string */ + return(err_string()); +} + +/* + * renice_procs(str) - change the "nice" of processes, much like the + * "renice" command does; invoked in response to 'r'. + */ + +char *renice_procs(str) + +char *str; + +{ + register char negate; + int prio; + int procnum; + int uid; + + ERR_RESET; + uid = getuid(); + + /* allow for negative priority values */ + if ((negate = (*str == '-')) != 0) + { + /* move past the minus sign */ + str++; + } + + /* use procnum as a temporary holding place and get the number */ + procnum = scanint(str, &prio); + + /* negate if necessary */ + if (negate) + { + prio = -prio; + } + +#if defined(PRIO_MIN) && defined(PRIO_MAX) + /* check for validity */ + if (procnum == -1 || prio < PRIO_MIN || prio > PRIO_MAX) + { + return(" bad priority value"); + } +#endif + + /* move to the first process number */ + if ((str = next_field(str)) == NULL) + { + return(" no processes specified"); + } + + /* loop thru the process numbers, renicing each one */ + do + { + if (scanint(str, &procnum) == -1) + { + ERROR(str, 0); + } + + /* check process owner if we're not root */ + else if (uid && (uid != proc_owner(procnum))) + { + ERROR(str, EACCES); + } + else if (setpriority(PRIO_PROCESS, procnum, prio) == -1) + { + ERROR(str, errno); + } + } while ((str = next_field(str)) != NULL); + + /* return appropriate error string */ + return(err_string()); +} + diff --git a/contrib/top/display.c b/contrib/top/display.c new file mode 100644 index 0000000..0769e3f --- /dev/null +++ b/contrib/top/display.c @@ -0,0 +1,1129 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * This file contains the routines that display information on the screen. + * Each section of the screen has two routines: one for initially writing + * all constant and dynamic text, and one for only updating the text that + * changes. The prefix "i_" is used on all the "initial" routines and the + * prefix "u_" is used for all the "updating" routines. + * + * ASSUMPTIONS: + * None of the "i_" routines use any of the termcap capabilities. + * In this way, those routines can be safely used on terminals that + * have minimal (or nonexistant) terminal capabilities. + * + * The routines are called in this order: *_loadave, i_timeofday, + * *_procstates, *_cpustates, *_memory, *_message, *_header, + * *_process, u_endscreen. + */ + +#include "os.h" +#include +#include + +#include "screen.h" /* interface to screen package */ +#include "layout.h" /* defines for screen position layout */ +#include "display.h" +#include "top.h" +#include "top.local.h" +#include "boolean.h" +#include "machine.h" /* we should eliminate this!!! */ +#include "utils.h" + +#ifdef DEBUG +FILE *debug; +#endif + +/* imported from screen.c */ +extern int overstrike; + +static int lmpid = 0; +static int last_hi = 0; /* used in u_process and u_endscreen */ +static int lastline = 0; +static int display_width = MAX_COLS; + +#define lineindex(l) ((l)*display_width) + +char *printable(); + +/* things initialized by display_init and used thruout */ + +/* buffer of proc information lines for display updating */ +char *screenbuf = NULL; + +static char **procstate_names; +static char **cpustate_names; +static char **memory_names; + +static int num_procstates; +static int num_cpustates; +static int num_memory; + +static int *lprocstates; +static int *lcpustates; +static int *lmemory; + +static int *cpustate_columns; +static int cpustate_total_length; + +static enum { OFF, ON, ERASE } header_status = ON; + +static int string_count(); +static void summary_format(); +static void line_update(); + +int display_resize() + +{ + register int lines; + + /* first, deallocate any previous buffer that may have been there */ + if (screenbuf != NULL) + { + free(screenbuf); + } + + /* calculate the current dimensions */ + /* if operating in "dumb" mode, we only need one line */ + lines = smart_terminal ? screen_length - Header_lines : 1; + + /* we don't want more than MAX_COLS columns, since the machine-dependent + modules make static allocations based on MAX_COLS and we don't want + to run off the end of their buffers */ + display_width = screen_width; + if (display_width >= MAX_COLS) + { + display_width = MAX_COLS - 1; + } + + /* now, allocate space for the screen buffer */ + screenbuf = (char *)malloc(lines * display_width); + if (screenbuf == (char *)NULL) + { + /* oops! */ + return(-1); + } + + /* return number of lines available */ + /* for dumb terminals, pretend like we can show any amount */ + return(smart_terminal ? lines : Largest); +} + +int display_init(statics) + +struct statics *statics; + +{ + register int lines; + register char **pp; + register int *ip; + register int i; + + /* call resize to do the dirty work */ + lines = display_resize(); + + /* only do the rest if we need to */ + if (lines > -1) + { + /* save pointers and allocate space for names */ + procstate_names = statics->procstate_names; + num_procstates = string_count(procstate_names); + lprocstates = (int *)malloc(num_procstates * sizeof(int)); + + cpustate_names = statics->cpustate_names; + num_cpustates = string_count(cpustate_names); + lcpustates = (int *)malloc(num_cpustates * sizeof(int)); + cpustate_columns = (int *)malloc(num_cpustates * sizeof(int)); + + memory_names = statics->memory_names; + num_memory = string_count(memory_names); + lmemory = (int *)malloc(num_memory * sizeof(int)); + + /* calculate starting columns where needed */ + cpustate_total_length = 0; + pp = cpustate_names; + ip = cpustate_columns; + while (*pp != NULL) + { + if ((i = strlen(*pp++)) > 0) + { + *ip++ = cpustate_total_length; + cpustate_total_length += i + 8; + } + } + } + + /* return number of lines available */ + return(lines); +} + +i_loadave(mpid, avenrun) + +int mpid; +double *avenrun; + +{ + register int i; + + /* i_loadave also clears the screen, since it is first */ + clear(); + + /* mpid == -1 implies this system doesn't have an _mpid */ + if (mpid != -1) + { + printf("last pid: %5d; ", mpid); + } + + printf("load averages"); + + for (i = 0; i < 3; i++) + { + printf("%c %5.2f", + i == 0 ? ':' : ',', + avenrun[i]); + } + lmpid = mpid; +} + +u_loadave(mpid, avenrun) + +int mpid; +double *avenrun; + +{ + register int i; + + if (mpid != -1) + { + /* change screen only when value has really changed */ + if (mpid != lmpid) + { + Move_to(x_lastpid, y_lastpid); + printf("%5d", mpid); + lmpid = mpid; + } + + /* i remembers x coordinate to move to */ + i = x_loadave; + } + else + { + i = x_loadave_nompid; + } + + /* move into position for load averages */ + Move_to(i, y_loadave); + + /* display new load averages */ + /* we should optimize this and only display changes */ + for (i = 0; i < 3; i++) + { + printf("%s%5.2f", + i == 0 ? "" : ", ", + avenrun[i]); + } +} + +i_timeofday(tod) + +time_t *tod; + +{ + /* + * Display the current time. + * "ctime" always returns a string that looks like this: + * + * Sun Sep 16 01:03:52 1973 + * 012345678901234567890123 + * 1 2 + * + * We want indices 11 thru 18 (length 8). + */ + + if (smart_terminal) + { + Move_to(screen_width - 8, 0); + } + else + { + fputs(" ", stdout); + } +#ifdef DEBUG + { + char *foo; + foo = ctime(tod); + fputs(foo, stdout); + } +#endif + printf("%-8.8s\n", &(ctime(tod)[11])); + lastline = 1; +} + +static int ltotal = 0; +static char procstates_buffer[128]; + +/* + * *_procstates(total, brkdn, names) - print the process summary line + * + * Assumptions: cursor is at the beginning of the line on entry + * lastline is valid + */ + +i_procstates(total, brkdn) + +int total; +int *brkdn; + +{ + register int i; + + /* write current number of processes and remember the value */ + printf("%d processes:", total); + ltotal = total; + + /* put out enough spaces to get to column 15 */ + i = digits(total); + while (i++ < 4) + { + putchar(' '); + } + + /* format and print the process state summary */ + summary_format(procstates_buffer, brkdn, procstate_names); + fputs(procstates_buffer, stdout); + + /* save the numbers for next time */ + memcpy(lprocstates, brkdn, num_procstates * sizeof(int)); +} + +u_procstates(total, brkdn) + +int total; +int *brkdn; + +{ + static char new[128]; + register int i; + + /* update number of processes only if it has changed */ + if (ltotal != total) + { + /* move and overwrite */ +#if (x_procstate == 0) + Move_to(x_procstate, y_procstate); +#else + /* cursor is already there...no motion needed */ + /* assert(lastline == 1); */ +#endif + printf("%d", total); + + /* if number of digits differs, rewrite the label */ + if (digits(total) != digits(ltotal)) + { + fputs(" processes:", stdout); + /* put out enough spaces to get to column 15 */ + i = digits(total); + while (i++ < 4) + { + putchar(' '); + } + /* cursor may end up right where we want it!!! */ + } + + /* save new total */ + ltotal = total; + } + + /* see if any of the state numbers has changed */ + if (memcmp(lprocstates, brkdn, num_procstates * sizeof(int)) != 0) + { + /* format and update the line */ + summary_format(new, brkdn, procstate_names); + line_update(procstates_buffer, new, x_brkdn, y_brkdn); + memcpy(lprocstates, brkdn, num_procstates * sizeof(int)); + } +} + +/* + * *_cpustates(states, names) - print the cpu state percentages + * + * Assumptions: cursor is on the PREVIOUS line + */ + +static int cpustates_column; + +/* cpustates_tag() calculates the correct tag to use to label the line */ + +char *cpustates_tag() + +{ + register char *use; + + static char *short_tag = "CPU: "; + static char *long_tag = "CPU states: "; + + /* if length + strlen(long_tag) >= screen_width, then we have to + use the shorter tag (we subtract 2 to account for ": ") */ + if (cpustate_total_length + (int)strlen(long_tag) - 2 >= screen_width) + { + use = short_tag; + } + else + { + use = long_tag; + } + + /* set cpustates_column accordingly then return result */ + cpustates_column = strlen(use); + return(use); +} + +i_cpustates(states) + +register int *states; + +{ + register int i = 0; + register int value; + register char **names = cpustate_names; + register char *thisname; + + /* print tag and bump lastline */ + printf("\n%s", cpustates_tag()); + lastline++; + + /* now walk thru the names and print the line */ + while ((thisname = *names++) != NULL) + { + if (*thisname != '\0') + { + /* retrieve the value and remember it */ + value = *states++; + + /* if percentage is >= 1000, print it as 100% */ + printf((value >= 1000 ? "%s%4.0f%% %s" : "%s%4.1f%% %s"), + i++ == 0 ? "" : ", ", + ((float)value)/10., + thisname); + } + } + + /* copy over values into "last" array */ + memcpy(lcpustates, states, num_cpustates * sizeof(int)); +} + +u_cpustates(states) + +register int *states; + +{ + register int value; + register char **names = cpustate_names; + register char *thisname; + register int *lp; + register int *colp; + + Move_to(cpustates_column, y_cpustates); + lastline = y_cpustates; + lp = lcpustates; + colp = cpustate_columns; + + /* we could be much more optimal about this */ + while ((thisname = *names++) != NULL) + { + if (*thisname != '\0') + { + /* did the value change since last time? */ + if (*lp != *states) + { + /* yes, move and change */ + Move_to(cpustates_column + *colp, y_cpustates); + lastline = y_cpustates; + + /* retrieve value and remember it */ + value = *states; + + /* if percentage is >= 1000, print it as 100% */ + printf((value >= 1000 ? "%4.0f" : "%4.1f"), + ((double)value)/10.); + + /* remember it for next time */ + *lp = *states; + } + } + + /* increment and move on */ + lp++; + states++; + colp++; + } +} + +z_cpustates() + +{ + register int i = 0; + register char **names = cpustate_names; + register char *thisname; + register int *lp; + + /* show tag and bump lastline */ + printf("\n%s", cpustates_tag()); + lastline++; + + while ((thisname = *names++) != NULL) + { + if (*thisname != '\0') + { + printf("%s %% %s", i++ == 0 ? "" : ", ", thisname); + } + } + + /* fill the "last" array with all -1s, to insure correct updating */ + lp = lcpustates; + i = num_cpustates; + while (--i >= 0) + { + *lp++ = -1; + } +} + +/* + * *_memory(stats) - print "Memory: " followed by the memory summary string + * + * Assumptions: cursor is on "lastline" + * for i_memory ONLY: cursor is on the previous line + */ + +char memory_buffer[MAX_COLS]; + +i_memory(stats) + +int *stats; + +{ + fputs("\nMemory: ", stdout); + lastline++; + + /* format and print the memory summary */ + summary_format(memory_buffer, stats, memory_names); + fputs(memory_buffer, stdout); +} + +u_memory(stats) + +int *stats; + +{ + static char new[MAX_COLS]; + + /* format the new line */ + summary_format(new, stats, memory_names); + line_update(memory_buffer, new, x_mem, y_mem); +} + +/* + * *_message() - print the next pending message line, or erase the one + * that is there. + * + * Note that u_message is (currently) the same as i_message. + * + * Assumptions: lastline is consistent + */ + +/* + * i_message is funny because it gets its message asynchronously (with + * respect to screen updates). + */ + +static char next_msg[MAX_COLS + 5]; +static int msglen = 0; +/* Invariant: msglen is always the length of the message currently displayed + on the screen (even when next_msg doesn't contain that message). */ + +i_message() + +{ + while (lastline < y_message) + { + fputc('\n', stdout); + lastline++; + } + if (next_msg[0] != '\0') + { + standout(next_msg); + msglen = strlen(next_msg); + next_msg[0] = '\0'; + } + else if (msglen > 0) + { + (void) clear_eol(msglen); + msglen = 0; + } +} + +u_message() + +{ + i_message(); +} + +static int header_length; + +/* + * *_header(text) - print the header for the process area + * + * Assumptions: cursor is on the previous line and lastline is consistent + */ + +i_header(text) + +char *text; + +{ + header_length = strlen(text); + if (header_status == ON) + { + putchar('\n'); + fputs(text, stdout); + lastline++; + } + else if (header_status == ERASE) + { + header_status = OFF; + } +} + +/*ARGSUSED*/ +u_header(text) + +char *text; /* ignored */ + +{ + if (header_status == ERASE) + { + putchar('\n'); + lastline++; + clear_eol(header_length); + header_status = OFF; + } +} + +/* + * *_process(line, thisline) - print one process line + * + * Assumptions: lastline is consistent + */ + +i_process(line, thisline) + +int line; +char *thisline; + +{ + register char *p; + register char *base; + + /* make sure we are on the correct line */ + while (lastline < y_procs + line) + { + putchar('\n'); + lastline++; + } + + /* truncate the line to conform to our current screen width */ + thisline[display_width] = '\0'; + + /* write the line out */ + fputs(thisline, stdout); + + /* copy it in to our buffer */ + base = smart_terminal ? screenbuf + lineindex(line) : screenbuf; + p = strecpy(base, thisline); + + /* zero fill the rest of it */ + memzero(p, display_width - (p - base)); +} + +u_process(line, newline) + +int line; +char *newline; + +{ + register char *optr; + register int screen_line = line + Header_lines; + register char *bufferline; + + /* remember a pointer to the current line in the screen buffer */ + bufferline = &screenbuf[lineindex(line)]; + + /* truncate the line to conform to our current screen width */ + newline[display_width] = '\0'; + + /* is line higher than we went on the last display? */ + if (line >= last_hi) + { + /* yes, just ignore screenbuf and write it out directly */ + /* get positioned on the correct line */ + if (screen_line - lastline == 1) + { + putchar('\n'); + lastline++; + } + else + { + Move_to(0, screen_line); + lastline = screen_line; + } + + /* now write the line */ + fputs(newline, stdout); + + /* copy it in to the buffer */ + optr = strecpy(bufferline, newline); + + /* zero fill the rest of it */ + memzero(optr, display_width - (optr - bufferline)); + } + else + { + line_update(bufferline, newline, 0, line + Header_lines); + } +} + +u_endscreen(hi) + +register int hi; + +{ + register int screen_line = hi + Header_lines; + register int i; + + if (smart_terminal) + { + if (hi < last_hi) + { + /* need to blank the remainder of the screen */ + /* but only if there is any screen left below this line */ + if (lastline + 1 < screen_length) + { + /* efficiently move to the end of currently displayed info */ + if (screen_line - lastline < 5) + { + while (lastline < screen_line) + { + putchar('\n'); + lastline++; + } + } + else + { + Move_to(0, screen_line); + lastline = screen_line; + } + + if (clear_to_end) + { + /* we can do this the easy way */ + putcap(clear_to_end); + } + else + { + /* use clear_eol on each line */ + i = hi; + while ((void) clear_eol(strlen(&screenbuf[lineindex(i++)])), i < last_hi) + { + putchar('\n'); + } + } + } + } + last_hi = hi; + + /* move the cursor to a pleasant place */ + Move_to(x_idlecursor, y_idlecursor); + lastline = y_idlecursor; + } + else + { + /* separate this display from the next with some vertical room */ + fputs("\n\n", stdout); + } +} + +display_header(t) + +int t; + +{ + if (t) + { + header_status = ON; + } + else if (header_status == ON) + { + header_status = ERASE; + } +} + +/*VARARGS2*/ +new_message(type, msgfmt, a1, a2, a3) + +int type; +char *msgfmt; +caddr_t a1, a2, a3; + +{ + register int i; + + /* first, format the message */ + (void) sprintf(next_msg, msgfmt, a1, a2, a3); + + if (msglen > 0) + { + /* message there already -- can we clear it? */ + if (!overstrike) + { + /* yes -- write it and clear to end */ + i = strlen(next_msg); + if ((type & MT_delayed) == 0) + { + type & MT_standout ? standout(next_msg) : + fputs(next_msg, stdout); + (void) clear_eol(msglen - i); + msglen = i; + next_msg[0] = '\0'; + } + } + } + else + { + if ((type & MT_delayed) == 0) + { + type & MT_standout ? standout(next_msg) : fputs(next_msg, stdout); + msglen = strlen(next_msg); + next_msg[0] = '\0'; + } + } +} + +clear_message() + +{ + if (clear_eol(msglen) == 1) + { + putchar('\r'); + } +} + +readline(buffer, size, numeric) + +char *buffer; +int size; +int numeric; + +{ + register char *ptr = buffer; + register char ch; + register char cnt = 0; + register char maxcnt = 0; + + /* allow room for null terminator */ + size -= 1; + + /* read loop */ + while ((fflush(stdout), read(0, ptr, 1) > 0)) + { + /* newline means we are done */ + if ((ch = *ptr) == '\n') + { + break; + } + + /* handle special editing characters */ + if (ch == ch_kill) + { + /* kill line -- account for overstriking */ + if (overstrike) + { + msglen += maxcnt; + } + + /* return null string */ + *buffer = '\0'; + putchar('\r'); + return(-1); + } + else if (ch == ch_erase) + { + /* erase previous character */ + if (cnt <= 0) + { + /* none to erase! */ + putchar('\7'); + } + else + { + fputs("\b \b", stdout); + ptr--; + cnt--; + } + } + /* check for character validity and buffer overflow */ + else if (cnt == size || (numeric && !isdigit(ch)) || + !isprint(ch)) + { + /* not legal */ + putchar('\7'); + } + else + { + /* echo it and store it in the buffer */ + putchar(ch); + ptr++; + cnt++; + if (cnt > maxcnt) + { + maxcnt = cnt; + } + } + } + + /* all done -- null terminate the string */ + *ptr = '\0'; + + /* account for the extra characters in the message area */ + /* (if terminal overstrikes, remember the furthest they went) */ + msglen += overstrike ? maxcnt : cnt; + + /* return either inputted number or string length */ + putchar('\r'); + return(cnt == 0 ? -1 : numeric ? atoi(buffer) : cnt); +} + +/* internal support routines */ + +static int string_count(pp) + +register char **pp; + +{ + register int cnt; + + cnt = 0; + while (*pp++ != NULL) + { + cnt++; + } + return(cnt); +} + +static void summary_format(str, numbers, names) + +char *str; +int *numbers; +register char **names; + +{ + register char *p; + register int num; + register char *thisname; + register int useM = No; + + /* format each number followed by its string */ + p = str; + while ((thisname = *names++) != NULL) + { + /* get the number to format */ + num = *numbers++; + + /* display only non-zero numbers */ + if (num > 0) + { + /* is this number in kilobytes? */ + if (thisname[0] == 'K') + { + /* yes: format it as a memory value */ + p = strecpy(p, format_k(num)); + + /* skip over the K, since it was included by format_k */ + p = strecpy(p, thisname+1); + } + else + { + p = strecpy(p, itoa(num)); + p = strecpy(p, thisname); + } + } + + /* ignore negative numbers, but display corresponding string */ + else if (num < 0) + { + p = strecpy(p, thisname); + } + } + + /* if the last two characters in the string are ", ", delete them */ + p -= 2; + if (p >= str && p[0] == ',' && p[1] == ' ') + { + *p = '\0'; + } +} + +static void line_update(old, new, start, line) + +register char *old; +register char *new; +int start; +int line; + +{ + register int ch; + register int diff; + register int newcol = start + 1; + register int lastcol = start; + char cursor_on_line = No; + char *current; + + /* compare the two strings and only rewrite what has changed */ + current = old; +#ifdef DEBUG + fprintf(debug, "line_update, starting at %d\n", start); + fputs(old, debug); + fputc('\n', debug); + fputs(new, debug); + fputs("\n-\n", debug); +#endif + + /* start things off on the right foot */ + /* this is to make sure the invariants get set up right */ + if ((ch = *new++) != *old) + { + if (line - lastline == 1 && start == 0) + { + putchar('\n'); + } + else + { + Move_to(start, line); + } + cursor_on_line = Yes; + putchar(ch); + *old = ch; + lastcol = 1; + } + old++; + + /* + * main loop -- check each character. If the old and new aren't the + * same, then update the display. When the distance from the + * current cursor position to the new change is small enough, + * the characters that belong there are written to move the + * cursor over. + * + * Invariants: + * lastcol is the column where the cursor currently is sitting + * (always one beyond the end of the last mismatch). + */ + do /* yes, a do...while */ + { + if ((ch = *new++) != *old) + { + /* new character is different from old */ + /* make sure the cursor is on top of this character */ + diff = newcol - lastcol; + if (diff > 0) + { + /* some motion is required--figure out which is shorter */ + if (diff < 6 && cursor_on_line) + { + /* overwrite old stuff--get it out of the old buffer */ + printf("%.*s", diff, ¤t[lastcol-start]); + } + else + { + /* use cursor addressing */ + Move_to(newcol, line); + cursor_on_line = Yes; + } + /* remember where the cursor is */ + lastcol = newcol + 1; + } + else + { + /* already there, update position */ + lastcol++; + } + + /* write what we need to */ + if (ch == '\0') + { + /* at the end--terminate with a clear-to-end-of-line */ + (void) clear_eol(strlen(old)); + } + else + { + /* write the new character */ + putchar(ch); + } + /* put the new character in the screen buffer */ + *old = ch; + } + + /* update working column and screen buffer pointer */ + newcol++; + old++; + + } while (ch != '\0'); + + /* zero out the rest of the line buffer -- MUST BE DONE! */ + diff = display_width - newcol; + if (diff > 0) + { + memzero(old, diff); + } + + /* remember where the current line is */ + if (cursor_on_line) + { + lastline = line; + } +} + +/* + * printable(str) - make the string pointed to by "str" into one that is + * printable (i.e.: all ascii), by converting all non-printable + * characters into '?'. Replacements are done in place and a pointer + * to the original buffer is returned. + */ + +char *printable(str) + +char *str; + +{ + register char *ptr; + register char ch; + + ptr = str; + while ((ch = *ptr) != '\0') + { + if (!isprint(ch)) + { + *ptr = '?'; + } + ptr++; + } + return(str); +} diff --git a/contrib/top/display.h b/contrib/top/display.h new file mode 100644 index 0000000..4bd7ce7 --- /dev/null +++ b/contrib/top/display.h @@ -0,0 +1,7 @@ +/* constants needed for display.c */ + +/* "type" argument for new_message function */ + +#define MT_standout 1 +#define MT_delayed 2 + diff --git a/contrib/top/getans b/contrib/top/getans new file mode 100755 index 0000000..7c94c37 --- /dev/null +++ b/contrib/top/getans @@ -0,0 +1,86 @@ +#!/bin/csh -f +set ny = (no yes) +if ($2 == "yesno") then + @ i = $3 + 1 + set pmpt = "$1 [$ny[$i]]: " +else + if ("$3" == "") then + set pmpt = "${1}" + else + set pmpt = "$1 [$3]: " + endif +endif +rpt: +echo -n "$pmpt" +set input = $< +switch ($2) + case number: + set tmp = `echo $input | tr -d 0123456789.` + if ("x$tmp" != x) then + echo "Invalid number. Please try again." + goto rpt + endif + breaksw + + case integer: + set tmp = `echo $input | tr -d 0123456789` + if ("x$tmp" != x) then + echo "Invalid integer. Please try again." + goto rpt + endif + breaksw + + case neginteger: + if ("x$input" != x-1) then + set tmp = `echo $input | tr -d 0123456789` + if ("x$tmp" != x) then + echo "Invalid integer. Please try again." + goto rpt + endif + endif + breaksw + + case file: + if ("x$input" == "x") then + set input = $3 + endif + if (! -e "$input") then + echo The file $input "does not exist. Please try again." + goto rpt + endif + breaksw + + case path: + if ("x$input" == "x") then + set input = "$3" + endif + if (! -e "$input") then + foreach elt ($path) + if (-e "$elt/$input") breaksw + end + echo The command $input "was not found. Please try again." + goto rpt + endif + breaksw + + case yesno: + if ("x$input" == xy || "x$input" == xyes) then + set input = 1 + else if ("x$input" == xn || "x$input" == xno) then + set input = 0 + else if ("x$input" != x) then + echo 'Please answer "yes" or "no".' + goto rpt + endif + breaksw + + default: + breaksw + +endsw + +if ("x$input" == x) then + set input = "$3" +endif + +echo $input > $4 diff --git a/contrib/top/getopt.c b/contrib/top/getopt.c new file mode 100644 index 0000000..e6afaaa --- /dev/null +++ b/contrib/top/getopt.c @@ -0,0 +1,90 @@ +/* + * "getopt" routine customized for top. + */ + +/* + * Many modern-day Unix implementations already have this function + * in libc. The standard "getopt" is perfectly sufficient for top's + * needs. If such a function exists in libc then you certainly don't + * need to compile this one in. To prevent this function from being + * compiled, define "HAVE_GETOPT". This is usually done in the "CFLAGS" + * line of the corresponding machine module. + */ + +/* + * This empty declaration exists solely to placate overexhuberant C + * compilers that like to warn you about content-free files. + */ +static void __empty(); + +#ifndef HAVE_GETOPT + +/*LINTLIBRARY*/ + +#include "os.h" +#ifndef NULL +#define NULL 0 +#endif +#ifndef EOF +#define EOF (-1) +#endif +#define ERR(s, c) if(opterr){\ + extern int write();\ + char errbuf[2];\ + errbuf[0] = c; errbuf[1] = '\n';\ + (void) write(2, argv[0], strlen(argv[0]));\ + (void) write(2, s, strlen(s));\ + (void) write(2, errbuf, 2);} + + +int opterr = 1; +int optind = 1; +int optopt; +char *optarg; + +int +getopt(argc, argv, opts) +int argc; +char **argv, *opts; +{ + static int sp = 1; + register int c; + register char *cp; + + if(sp == 1) + if(optind >= argc || + argv[optind][0] != '-' || argv[optind][1] == '\0') + return(EOF); + else if(strcmp(argv[optind], "--") == 0) { + optind++; + return(EOF); + } + optopt = c = argv[optind][sp]; + if(c == ':' || (cp=strchr(opts, c)) == NULL) { + ERR(": unknown option, -", c); + if(argv[optind][++sp] == '\0') { + optind++; + sp = 1; + } + return('?'); + } + if(*++cp == ':') { + if(argv[optind][sp+1] != '\0') + optarg = &argv[optind++][sp+1]; + else if(++optind >= argc) { + ERR(": argument missing for -", c); + sp = 1; + return('?'); + } else + optarg = argv[optind++]; + sp = 1; + } else { + if(argv[optind][++sp] == '\0') { + sp = 1; + optind++; + } + optarg = NULL; + } + return(c); +} +#endif /* HAVE_GETOPT */ diff --git a/contrib/top/install b/contrib/top/install new file mode 100755 index 0000000..d8b6283 --- /dev/null +++ b/contrib/top/install @@ -0,0 +1,69 @@ +#!/bin/sh +# +# this shell script is amazingly similar to the old and lamented +# BSD "install" command. It recognized the following options: +# +# -o target file owner +# -m target file mode +# -g target file group owner +# +# +# scan the options +# +while [ $# -gt 0 ]; do + case $1 in + -o) + owner=$2 + shift ; shift + ;; + + -m) + mode=$2 + shift; shift + ;; + + -g) + group=$2 + shift ; shift + ;; + + -*) + echo "install: unknown option $1" + exit + ;; + + *) + break + ;; + esac +done +# +# we need two more: filename and destination +# +if [ $# -ne 2 ]; then + echo "Usage: install [ -o owner ] [ -m mode ] [ -g group ] file destination" + exit +fi +# +# first, copy +# +cp $1 $2 +# +# normalize the name +# +dest=$2 +if [ -d $2 ]; then + dest=$2/`basename $1` +fi +# +# do optional things +# +if [ "$owner" ]; then + chown $owner $dest +fi +if [ "$group" ]; then + chgrp $group $dest +fi +if [ "$mode" ]; then + chmod $mode $dest +fi diff --git a/contrib/top/layout.h b/contrib/top/layout.h new file mode 100644 index 0000000..77ce102 --- /dev/null +++ b/contrib/top/layout.h @@ -0,0 +1,27 @@ +/* + * Top - a top users display for Berkeley Unix + * + * This file defines the locations on tne screen for various parts of the + * display. These definitions are used by the routines in "display.c" for + * cursor addressing. + */ + +#define x_lastpid 10 +#define y_lastpid 0 +#define x_loadave 33 +#define x_loadave_nompid 15 +#define y_loadave 0 +#define x_procstate 0 +#define y_procstate 1 +#define x_brkdn 15 +#define y_brkdn 1 +#define x_mem 8 +#define y_mem 3 +#define y_message 4 +#define x_header 0 +#define y_header 5 +#define x_idlecursor 0 +#define y_idlecursor 4 +#define y_procs 6 + +#define y_cpustates 2 diff --git a/contrib/top/loadavg.h b/contrib/top/loadavg.h new file mode 100644 index 0000000..f49541e --- /dev/null +++ b/contrib/top/loadavg.h @@ -0,0 +1,57 @@ +/* + * Top - a top users display for Berkeley Unix + * + * Defines required to access load average figures. + * + * This include file sets up everything we need to access the load average + * values in the kernel in a machine independent way. First, it sets the + * typedef "load_avg" to be either double or long (depending on what is + * needed), then it defines these macros appropriately: + * + * loaddouble(la) - convert load_avg to double. + * intload(i) - convert integer to load_avg. + */ + +/* + * We assume that if FSCALE is defined, then avenrun and ccpu are type long. + * If your machine is an exception (mips, perhaps?) then make adjustments + * here. + * + * Defined types: load_avg for load averages, pctcpu for cpu percentages. + */ +#if defined(mips) && !defined(NetBSD) +# include +# if defined(FBITS) && !defined(FSCALE) +# define FSCALE (1 << FBITS) /* mips */ +# endif +#endif + +#ifdef FSCALE +# define FIXED_LOADAVG FSCALE +# define FIXED_PCTCPU FSCALE +#endif + +#ifdef ibm032 +# undef FIXED_LOADAVG +# undef FIXED_PCTCPU +# define FIXED_PCTCPU PCT_SCALE +#endif + + +#ifdef FIXED_PCTCPU + typedef long pctcpu; +# define pctdouble(p) ((double)(p) / FIXED_PCTCPU) +#else +typedef double pctcpu; +# define pctdouble(p) (p) +#endif + +#ifdef FIXED_LOADAVG + typedef long load_avg; +# define loaddouble(la) ((double)(la) / FIXED_LOADAVG) +# define intload(i) ((int)((i) * FIXED_LOADAVG)) +#else + typedef double load_avg; +# define loaddouble(la) (la) +# define intload(i) ((double)(i)) +#endif diff --git a/contrib/top/m-template b/contrib/top/m-template new file mode 100644 index 0000000..569b0e0 --- /dev/null +++ b/contrib/top/m-template @@ -0,0 +1,241 @@ +/* + * top - a top users display for Unix + * + * THIS IS A TEMPLATE FILE FOR A MACHINE DEPENDENT (m_...c) FILE + * + * SYNOPSIS: one line description of machine this module works with + * + * DESCRIPTION: + * Detailed description of this machine dependent module. + * It can be multiple lines, but a blank comment line (one with only an + * asterisk) is considered to end it. Place here a complete list of + * the machines and OS versions that this module works on. + * + * LIBS: list of special libraries to include at link step (REMOVE THIS LINE IF NOT NEEDED) + * + * AUTHOR: your name and + */ + +#include "top.h" +#include "machine.h" + + +/* + * These definitions control the format of the per-process area + */ + +static char header[] = + " PID X PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND"; +/* 0123456 -- field to fill in starts at header+6 */ +#define UNAME_START 6 + +#define Proc_format \ + "%5d %-8.8s %3d %4d%6dK %4dK %-5s%4d:%02d %5.2f%% %5.2f%% %.14s" + +/* these are for detailing the process states */ + +int process_states[?]; +char *procstatenames[] = { + "", " sleeping, ", " ABANDONED, ", " running, ", " starting, ", + " zombie, ", " stopped, ", + NULL +}; + +/* these are for detailing the cpu states */ + +int cpu_states[?]; +char *cpustatenames[] = { + "user", "nice", "system", "idle", + NULL +}; + +/* these are for detailing the memory statistics */ + +int memory_stats[?]; +char *memorynames[] = { + "K available, ", "K in use, ", "K free, ", "K locked", NULL +}; + +/* useful externals */ +extern int errno; +extern char *sys_errlist[]; + +long lseek(); +long time(); +long percentages(); + +machine_init(statics) + +struct statics *statics; + +{ + return(0); +} + +char *format_header(uname_field) + +register char *uname_field; + +{ + register char *ptr; + + ptr = header + UNAME_START; + while (*uname_field != '\0') + { + *ptr++ = *uname_field++; + } + + return(header); +} + +get_system_info(si) + +struct system_info *si; + +{ +} + +static struct handle handle; + +caddr_t get_process_info(si, sel, compare) + +struct system_info *si; +struct process_select *sel; +int (*compare)(); + +{ + return((caddr_t)&handle); +} + +char fmt[128]; /* static area where result is built */ + +/* define what weighted cpu is. */ +#define weighted_cpu(pct, pp) ((pp)->p_time == 0 ? 0.0 : \ + ((pct) / (1.0 - exp((pp)->p_time * logcpu)))) + +char *format_next_process(handle, get_userid) + +caddr_t handle; +char *(*get_userid)(); + +{ + return(fmt); +} + +/* + * getkval(offset, ptr, size, refstr) - get a value out of the kernel. + * "offset" is the byte offset into the kernel for the desired value, + * "ptr" points to a buffer into which the value is retrieved, + * "size" is the size of the buffer (and the object to retrieve), + * "refstr" is a reference string used when printing error meessages, + * if "refstr" starts with a '!', then a failure on read will not + * be fatal (this may seem like a silly way to do things, but I + * really didn't want the overhead of another argument). + * + */ + +getkval(offset, ptr, size, refstr) + +unsigned long offset; +int *ptr; +int size; +char *refstr; + +{ + if (kvm_read(kd, offset, ptr, size) != size) + { + if (*refstr == '!') + { + return(0); + } + else + { + fprintf(stderr, "top: kvm_read for %s: %s\n", + refstr, sys_errlist[errno]); + quit(23); + } + } + return(1); +} + +/* comparison routine for qsort */ +/* NOTE: this is specific to the BSD proc structure, but it should + give you a good place to start. */ + +/* + * proc_compare - comparison function for "qsort" + * Compares the resource consumption of two processes using five + * distinct keys. The keys (in descending order of importance) are: + * percent cpu, cpu ticks, state, resident set size, total virtual + * memory usage. The process states are ordered as follows (from least + * to most important): WAIT, zombie, sleep, stop, start, run. The + * array declaration below maps a process state index into a number + * that reflects this ordering. + */ + +static unsigned char sorted_state[] = +{ + 0, /* not used */ + 3, /* sleep */ + 1, /* ABANDONED (WAIT) */ + 6, /* run */ + 5, /* start */ + 2, /* zombie */ + 4 /* stop */ +}; + +proc_compare(pp1, pp2) + +struct proc **pp1; +struct proc **pp2; + +{ + register struct proc *p1; + register struct proc *p2; + register int result; + register pctcpu lresult; + + /* remove one level of indirection */ + p1 = *pp1; + p2 = *pp2; + + /* compare percent cpu (pctcpu) */ + if ((lresult = p2->p_pctcpu - p1->p_pctcpu) == 0) + { + /* use cpticks to break the tie */ + if ((result = p2->p_cpticks - p1->p_cpticks) == 0) + { + /* use process state to break the tie */ + if ((result = sorted_state[p2->p_stat] - + sorted_state[p1->p_stat]) == 0) + { + /* use priority to break the tie */ + if ((result = p2->p_pri - p1->p_pri) == 0) + { + /* use resident set size (rssize) to break the tie */ + if ((result = p2->p_rssize - p1->p_rssize) == 0) + { + /* use total memory to break the tie */ + result = PROCSIZE(p2) - PROCSIZE(p1); + } + } + } + } + } + else + { + result = lresult < 0 ? -1 : 1; + } + + return(result); +} + +proc_owner(pid) + +int pid; + +{ + /* returns uid of owner of process pid */ + return(uid); +} + diff --git a/contrib/top/machine.h b/contrib/top/machine.h new file mode 100644 index 0000000..4f121a7 --- /dev/null +++ b/contrib/top/machine.h @@ -0,0 +1,58 @@ +/* + * This file defines the interface between top and the machine-dependent + * module. It is NOT machine dependent and should not need to be changed + * for any specific machine. + */ + +/* + * the statics struct is filled in by machine_init + */ +struct statics +{ + char **procstate_names; + char **cpustate_names; + char **memory_names; +#ifdef ORDER + char **order_names; +#endif +}; + +/* + * the system_info struct is filled in by a machine dependent routine. + */ + +struct system_info +{ + int last_pid; + double load_avg[NUM_AVERAGES]; + int p_total; + int p_active; /* number of procs considered "active" */ + int *procstates; + int *cpustates; + int *memory; +}; + +/* cpu_states is an array of percentages * 10. For example, + the (integer) value 105 is 10.5% (or .105). + */ + +/* + * the process_select struct tells get_process_info what processes we + * are interested in seeing + */ + +struct process_select +{ + int idle; /* show idle processes */ + int system; /* show system processes */ + int uid; /* only this uid (unless uid == -1) */ + char *command; /* only this command (unless == NULL) */ +}; + +/* routines defined by the machine dependent module */ + +char *format_header(); +char *format_next_process(); + +/* non-int routines typically used by the machine dependent module */ +char *printable(); diff --git a/contrib/top/metatop b/contrib/top/metatop new file mode 100755 index 0000000..88a787c --- /dev/null +++ b/contrib/top/metatop @@ -0,0 +1,25 @@ +#! /bin/sh +# +# Top is very sensitive to differences in the kernel, so much so that an +# executable created on one sub-architecture may not work on others. It +# is also quite common for a minor OS revision to require recompilation of +# top. Both of these problems are especially prevalent on Suns. For +# example, a top executable made under SunOS 4.1.1 will not run correctly +# under SunOS 4.1.2, and vice versa. "metatop" attempts to solve this +# problem by choosing one of several possible top executables to run then +# executing it. +# +# To use metatop your operating system needs to have the command "uname" +# as part of the standard OS release. MAKE SURE IT DOES before proceeding. +# It will try to execute the command "top-`uname -m`-`uname -r`" For +# example, on a sparcstation 1 running SunOS 4.1.1, it will try to run +# "top-sun4c-4.1.1". +# +# INSTALLATION is easy. Just compile top as normal. Then use the command +# "make metainstall" (on the same machine!) instead of the usual. "make" +# will insure that this shell script is installed correctly then will install +# the most recently made top executable with the correct name. Remember: +# you will need to "make clean" and "make metainstall" on every different +# combination of sub-architecture and OS version that you have. +# +exec $0-`uname -m`-`uname -r` "$@" diff --git a/contrib/top/os.h b/contrib/top/os.h new file mode 100644 index 0000000..d25e93e --- /dev/null +++ b/contrib/top/os.h @@ -0,0 +1,29 @@ +#include +#include /* This defines BSD */ +#if defined(BSD) && !defined(BSD4_4) && !defined(__osf__) +# include +# include +# define strchr(a, b) index((a), (b)) +# define strrchr(a, b) rindex((a), (b)) +# define memcpy(a, b, c) bcopy((b), (a), (c)) +# define memzero(a, b) bzero((a), (b)) +# define memcmp(a, b, c) bcmp((a), (b), (c)) +#if defined(NeXT) + typedef void sigret_t; +#else + typedef int sigret_t; +#endif + +/* system routines that don't return int */ +char *getenv(); +caddr_t malloc(); + +#else +# include +# define setbuffer(f, b, s) setvbuf((f), (b), (b) ? _IOFBF : _IONBF, (s)) +# include +# include +# include +# define memzero(a, b) memset((a), 0, (b)) + typedef void sigret_t; +#endif diff --git a/contrib/top/patchlevel.h b/contrib/top/patchlevel.h new file mode 100644 index 0000000..82d4f62 --- /dev/null +++ b/contrib/top/patchlevel.h @@ -0,0 +1 @@ +#define PATCHLEVEL 4 diff --git a/contrib/top/prime.c b/contrib/top/prime.c new file mode 100644 index 0000000..319d0b6 --- /dev/null +++ b/contrib/top/prime.c @@ -0,0 +1,40 @@ +/* + * Prime number generator. It prints on stdout the next prime number + * higher than the number specified as argv[1]. + */ + +#include + +main(argc, argv) + +int argc; +char *argv[]; + +{ + double i, j; + int f; + + if (argc < 2) + { + exit(1); + } + + i = atoi(argv[1]); + while (i++) + { + f=1; + for (j=2; j +#ifdef CBREAK +# include +# define SGTTY +#else +# ifdef TCGETA +# define TERMIO +# include +# else +# define TERMIOS +# include +# endif +#endif +#if defined(TERMIO) || defined(TERMIOS) +# ifndef TAB3 +# ifdef OXTABS +# define TAB3 OXTABS +# else +# define TAB3 0 +# endif +# endif +#endif +#include "screen.h" +#include "boolean.h" + +extern char *myname; + +int putstdout(); + +int overstrike; +int screen_length; +int screen_width; +char ch_erase; +char ch_kill; +char smart_terminal; +char PC; +char *tgetstr(); +char *tgoto(); +char termcap_buf[1024]; +char string_buffer[1024]; +char home[15]; +char lower_left[15]; +char *clear_line; +char *clear_screen; +char *clear_to_end; +char *cursor_motion; +char *start_standout; +char *end_standout; +char *terminal_init; +char *terminal_end; +short ospeed; + +#ifdef SGTTY +static struct sgttyb old_settings; +static struct sgttyb new_settings; +#endif +#ifdef TERMIO +static struct termio old_settings; +static struct termio new_settings; +#endif +#ifdef TERMIOS +static struct termios old_settings; +static struct termios new_settings; +#endif +static char is_a_terminal = No; +#ifdef TOStop +static int old_lword; +static int new_lword; +#endif + +#define STDIN 0 +#define STDOUT 1 +#define STDERR 2 + +init_termcap(interactive) + +int interactive; + +{ + char *bufptr; + char *PCptr; + char *term_name; + char *getenv(); + int status; + + /* set defaults in case we aren't smart */ + screen_width = MAX_COLS; + screen_length = 0; + + if (!interactive) + { + /* pretend we have a dumb terminal */ + smart_terminal = No; + return; + } + + /* assume we have a smart terminal until proven otherwise */ + smart_terminal = Yes; + + /* get the terminal name */ + term_name = getenv("TERM"); + + /* if there is no TERM, assume it's a dumb terminal */ + /* patch courtesy of Sam Horrocks at telegraph.ics.uci.edu */ + if (term_name == NULL) + { + smart_terminal = No; + return; + } + + /* now get the termcap entry */ + if ((status = tgetent(termcap_buf, term_name)) != 1) + { + if (status == -1) + { + fprintf(stderr, "%s: can't open termcap file\n", myname); + } + else + { + fprintf(stderr, "%s: no termcap entry for a `%s' terminal\n", + myname, term_name); + } + + /* pretend it's dumb and proceed */ + smart_terminal = No; + return; + } + + /* "hardcopy" immediately indicates a very stupid terminal */ + if (tgetflag("hc")) + { + smart_terminal = No; + return; + } + + /* set up common terminal capabilities */ + if ((screen_length = tgetnum("li")) <= 0) + { + screen_length = smart_terminal = 0; + return; + } + + /* screen_width is a little different */ + if ((screen_width = tgetnum("co")) == -1) + { + screen_width = 79; + } + else + { + screen_width -= 1; + } + + /* terminals that overstrike need special attention */ + overstrike = tgetflag("os"); + + /* initialize the pointer into the termcap string buffer */ + bufptr = string_buffer; + + /* get "ce", clear to end */ + if (!overstrike) + { + clear_line = tgetstr("ce", &bufptr); + } + + /* get necessary capabilities */ + if ((clear_screen = tgetstr("cl", &bufptr)) == NULL || + (cursor_motion = tgetstr("cm", &bufptr)) == NULL) + { + smart_terminal = No; + return; + } + + /* get some more sophisticated stuff -- these are optional */ + clear_to_end = tgetstr("cd", &bufptr); + terminal_init = tgetstr("ti", &bufptr); + terminal_end = tgetstr("te", &bufptr); + start_standout = tgetstr("so", &bufptr); + end_standout = tgetstr("se", &bufptr); + + /* pad character */ + PC = (PCptr = tgetstr("pc", &bufptr)) ? *PCptr : 0; + + /* set convenience strings */ + (void) strcpy(home, tgoto(cursor_motion, 0, 0)); + /* (lower_left is set in get_screensize) */ + + /* get the actual screen size with an ioctl, if needed */ + /* This may change screen_width and screen_length, and it always + sets lower_left. */ + get_screensize(); + + /* if stdout is not a terminal, pretend we are a dumb terminal */ +#ifdef SGTTY + if (ioctl(STDOUT, TIOCGETP, &old_settings) == -1) + { + smart_terminal = No; + } +#endif +#ifdef TERMIO + if (ioctl(STDOUT, TCGETA, &old_settings) == -1) + { + smart_terminal = No; + } +#endif +#ifdef TERMIOS + if (tcgetattr(STDOUT, &old_settings) == -1) + { + smart_terminal = No; + } +#endif +} + +init_screen() + +{ + /* get the old settings for safe keeping */ +#ifdef SGTTY + if (ioctl(STDOUT, TIOCGETP, &old_settings) != -1) + { + /* copy the settings so we can modify them */ + new_settings = old_settings; + + /* turn on CBREAK and turn off character echo and tab expansion */ + new_settings.sg_flags |= CBREAK; + new_settings.sg_flags &= ~(ECHO|XTABS); + (void) ioctl(STDOUT, TIOCSETP, &new_settings); + + /* remember the erase and kill characters */ + ch_erase = old_settings.sg_erase; + ch_kill = old_settings.sg_kill; + +#ifdef TOStop + /* get the local mode word */ + (void) ioctl(STDOUT, TIOCLGET, &old_lword); + + /* modify it */ + new_lword = old_lword | LTOSTOP; + (void) ioctl(STDOUT, TIOCLSET, &new_lword); +#endif + /* remember that it really is a terminal */ + is_a_terminal = Yes; + + /* send the termcap initialization string */ + putcap(terminal_init); + } +#endif +#ifdef TERMIO + if (ioctl(STDOUT, TCGETA, &old_settings) != -1) + { + /* copy the settings so we can modify them */ + new_settings = old_settings; + + /* turn off ICANON, character echo and tab expansion */ + new_settings.c_lflag &= ~(ICANON|ECHO); + new_settings.c_oflag &= ~(TAB3); + new_settings.c_cc[VMIN] = 1; + new_settings.c_cc[VTIME] = 0; + (void) ioctl(STDOUT, TCSETA, &new_settings); + + /* remember the erase and kill characters */ + ch_erase = old_settings.c_cc[VERASE]; + ch_kill = old_settings.c_cc[VKILL]; + + /* remember that it really is a terminal */ + is_a_terminal = Yes; + + /* send the termcap initialization string */ + putcap(terminal_init); + } +#endif +#ifdef TERMIOS + if (tcgetattr(STDOUT, &old_settings) != -1) + { + /* copy the settings so we can modify them */ + new_settings = old_settings; + + /* turn off ICANON, character echo and tab expansion */ + new_settings.c_lflag &= ~(ICANON|ECHO); + new_settings.c_oflag &= ~(TAB3); + new_settings.c_cc[VMIN] = 1; + new_settings.c_cc[VTIME] = 0; + (void) tcsetattr(STDOUT, TCSADRAIN, &new_settings); + + /* remember the erase and kill characters */ + ch_erase = old_settings.c_cc[VERASE]; + ch_kill = old_settings.c_cc[VKILL]; + + /* remember that it really is a terminal */ + is_a_terminal = Yes; + + /* send the termcap initialization string */ + putcap(terminal_init); + } +#endif + + if (!is_a_terminal) + { + /* not a terminal at all---consider it dumb */ + smart_terminal = No; + } +} + +end_screen() + +{ + /* move to the lower left, clear the line and send "te" */ + if (smart_terminal) + { + putcap(lower_left); + putcap(clear_line); + fflush(stdout); + putcap(terminal_end); + } + + /* if we have settings to reset, then do so */ + if (is_a_terminal) + { +#ifdef SGTTY + (void) ioctl(STDOUT, TIOCSETP, &old_settings); +#ifdef TOStop + (void) ioctl(STDOUT, TIOCLSET, &old_lword); +#endif +#endif +#ifdef TERMIO + (void) ioctl(STDOUT, TCSETA, &old_settings); +#endif +#ifdef TERMIOS + (void) tcsetattr(STDOUT, TCSADRAIN, &old_settings); +#endif + } +} + +reinit_screen() + +{ + /* install our settings if it is a terminal */ + if (is_a_terminal) + { +#ifdef SGTTY + (void) ioctl(STDOUT, TIOCSETP, &new_settings); +#ifdef TOStop + (void) ioctl(STDOUT, TIOCLSET, &new_lword); +#endif +#endif +#ifdef TERMIO + (void) ioctl(STDOUT, TCSETA, &new_settings); +#endif +#ifdef TERMIOS + (void) tcsetattr(STDOUT, TCSADRAIN, &new_settings); +#endif + } + + /* send init string */ + if (smart_terminal) + { + putcap(terminal_init); + } +} + +get_screensize() + +{ + +#ifdef TIOCGWINSZ + + struct winsize ws; + + if (ioctl (1, TIOCGWINSZ, &ws) != -1) + { + if (ws.ws_row != 0) + { + screen_length = ws.ws_row; + } + if (ws.ws_col != 0) + { + screen_width = ws.ws_col - 1; + } + } + +#else +#ifdef TIOCGSIZE + + struct ttysize ts; + + if (ioctl (1, TIOCGSIZE, &ts) != -1) + { + if (ts.ts_lines != 0) + { + screen_length = ts.ts_lines; + } + if (ts.ts_cols != 0) + { + screen_width = ts.ts_cols - 1; + } + } + +#endif /* TIOCGSIZE */ +#endif /* TIOCGWINSZ */ + + (void) strcpy(lower_left, tgoto(cursor_motion, 0, screen_length - 1)); +} + +standout(msg) + +char *msg; + +{ + if (smart_terminal) + { + putcap(start_standout); + fputs(msg, stdout); + putcap(end_standout); + } + else + { + fputs(msg, stdout); + } +} + +clear() + +{ + if (smart_terminal) + { + putcap(clear_screen); + } +} + +clear_eol(len) + +int len; + +{ + if (smart_terminal && !overstrike && len > 0) + { + if (clear_line) + { + putcap(clear_line); + return(0); + } + else + { + while (len-- > 0) + { + putchar(' '); + } + return(1); + } + } + return(-1); +} + +go_home() + +{ + if (smart_terminal) + { + putcap(home); + } +} + +/* This has to be defined as a subroutine for tputs (instead of a macro) */ + +putstdout(ch) + +char ch; + +{ + putchar(ch); +} + diff --git a/contrib/top/screen.h b/contrib/top/screen.h new file mode 100644 index 0000000..50105e4 --- /dev/null +++ b/contrib/top/screen.h @@ -0,0 +1,31 @@ +/* + * top - a top users display for Unix 4.2 + * + * This file contains all the definitions necessary to use the hand-written + * screen package in "screen.c" + */ + +#define TCputs(str) tputs(str, 1, putstdout) +#define putcap(str) (void)((str) != NULL ? TCputs(str) : 0) +#define Move_to(x, y) TCputs(tgoto(cursor_motion, x, y)) + +/* declare return values for termcap functions */ +char *tgetstr(); +char *tgoto(); + +extern char ch_erase; /* set to the user's erase character */ +extern char ch_kill; /* set to the user's kill character */ +extern char smart_terminal; /* set if the terminal has sufficient termcap + capabilities for normal operation */ + +/* These are some termcap strings for use outside of "screen.c" */ +extern char *cursor_motion; +extern char *clear_line; +extern char *clear_to_end; + +/* rows and columns on the screen according to termcap */ +extern int screen_length; +extern int screen_width; + +/* a function that puts a single character on stdout */ +int putstdout(); diff --git a/contrib/top/sigconv.awk b/contrib/top/sigconv.awk new file mode 100644 index 0000000..8c90d8d --- /dev/null +++ b/contrib/top/sigconv.awk @@ -0,0 +1,53 @@ +BEGIN { + nsig = 0; + j = 0; + print "/* This file was automatically generated */" + print "/* by the awk script \"sigconv.awk\". */\n" + print "struct sigdesc {" + print " char *name;" + print " int number;" + print "};\n" + print "struct sigdesc sigdesc[] = {" + } + +/^#define[ \t][ \t]*SIG[A-Z]/ { + + j = sprintf("%d", $3); + str = $2; + + if (nsig < j) + nsig = j; + + siglist[j] = sprintf("\"%s\",\t%2d,", \ + substr(str, 4), j); + } +/^#[ \t]*define[ \t][ \t]*SIG[A-Z]/ { + + j = sprintf("%d", $4); + str = $3; + + if (nsig < j) + nsig = j; + + siglist[j] = sprintf("\"%s\",\t%2d,", \ + substr(str, 4), j); + } +/^#[ \t]*define[ \t][ \t]*_SIG[A-Z]/ { + + j = sprintf("%d", $4); + str = $3; + + if (nsig < j) + nsig = j; + + siglist[j] = sprintf("\"%s\",\t%2d,", \ + substr(str, 5), j); + } + +END { + for (n = 1; n <= nsig; n++) + if (siglist[n] != "") + printf(" %s\n", siglist[n]); + + printf(" NULL,\t 0\n};\n"); + } diff --git a/contrib/top/top.X b/contrib/top/top.X new file mode 100644 index 0000000..219e2fb --- /dev/null +++ b/contrib/top/top.X @@ -0,0 +1,324 @@ +.\" NOTE: changes to the manual page for "top" should be made in the +.\" file "top.X" and NOT in the file "top.1". +.nr N %topn% +.nr D %delay% +.TH TOP 1 Local +.UC 4 +.SH NAME +top \- display and update information about the top cpu processes +.SH SYNOPSIS +.B top +[ +.B \-SbiInqu +] [ +.BI \-d count +] [ +.BI \-s time +] [ +.BI \-o field +] [ +.BI \-U username +] [ +.I number +] +.SH DESCRIPTION +.\" This defines appropriate quote strings for nroff and troff +.ds lq \&" +.ds rq \&" +.if t .ds lq `` +.if t .ds rq '' +.\" Just in case these number registers aren't set yet... +.if \nN==0 .nr N 10 +.if \nD==0 .nr D 5 +.I Top +displays the top +.if !\nN==-1 \nN +processes on the system and periodically updates this information. +.if \nN==-1 \ +\{\ +If standard output is an intelligent terminal (see below) then +as many processes as will fit on the terminal screen are displayed +by default. Otherwise, a good number of them are shown (around 20). +.\} +Raw cpu percentage is used to rank the processes. If +.I number +is given, then the top +.I number +processes will be displayed instead of the default. +.PP +.I Top +makes a distinction between terminals that support advanced capabilities +and those that do not. This +distinction affects the choice of defaults for certain options. In the +remainder of this document, an \*(lqintelligent\*(rq terminal is one that +supports cursor addressing, clear screen, and clear to end of line. +Conversely, a \*(lqdumb\*(rq terminal is one that does not support such +features. If the output of +.I top +is redirected to a file, it acts as if it were being run on a dumb +terminal. +.SH OPTIONS +.TP +.B \-S +Show system processes in the display. Normally, system processes such as +the pager and the swapper are not shown. This option makes them visible. +.TP +.B \-b +Use \*(lqbatch\*(rq mode. In this mode, all input from the terminal is +ignored. Interrupt characters (such as ^C and ^\e) still have an effect. +This is the default on a dumb terminal, or when the output is not a terminal. +.TP +.B \-i +Use \*(lqinteractive\*(rq mode. In this mode, any input is immediately +read for processing. See the section on \*(lqInteractive Mode\*(rq +for an explanation of +which keys perform what functions. After the command is processed, the +screen will immediately be updated, even if the command was not +understood. This mode is the default when standard output is an +intelligent terminal. +.TP +.B \-I +Do not display idle processes. +By default, top displays both active and idle processes. +.TP +.B \-n +Use \*(lqnon-interactive\*(rq mode. This is indentical to \*(lqbatch\*(rq +mode. +.TP +.B \-q +Renice +.I top +to -20 so that it will run faster. This can be used when the system is +being very sluggish to improve the possibility of discovering the problem. +This option can only be used by root. +.TP +.B \-u +Do not take the time to map uid numbers to usernames. Normally, +.I top +will read as much of the file \*(lq/etc/passwd\*(rq as is necessary to map +all the user id numbers it encounters into login names. This option +disables all that, while possibly decreasing execution time. The uid +numbers are displayed instead of the names. +.TP +.BI \-d count +Show only +.I count +displays, then exit. A display is considered to be one update of the +screen. This option allows the user to select the number of displays he +wants to see before +.I top +automatically exits. For intelligent terminals, no upper limit +is set. The default is 1 for dumb terminals. +.TP +.BI \-s time +Set the delay between screen updates to +.I time +seconds. The default delay between updates is \nD seconds. +.TP +.BI \-o field +Sort the process display area on the specified field. The field name is +the name of the column as seen in the output, but in lower case. Likely +values are \*(lqcpu\*(rq, \*(lqsize\*(rq, \*(lqres\*(rq, and \*(lqtime\*(rq, +but may vary on different operating systems. Note that +not all operating systems support this option. +.TP +.BI \-U username +Show only those processes owned by +.IR username . +This option currently only accepts usernames and will not understand +uid numbers. +.PP +Both +.I count +and +.I number +fields can be specified as \*(lqinfinite\*(rq, indicating that they can +stretch as far as possible. This is accomplished by using any proper +prefix of the keywords +\*(lqinfinity\*(rq, +\*(lqmaximum\*(rq, +or +\*(lqall\*(rq. +The default for +.I count +on an intelligent terminal is, in fact, +.BI infinity . +.PP +The environment variable +.B TOP +is examined for options before the command line is scanned. This enables +a user to set his or her own defaults. The number of processes to display +can also be specified in the environment variable +.BR TOP . +The options +.BR \-I , +.BR \-S , +and +.B \-u +are actually toggles. A second specification of any of these options +will negate the first. Thus a user who has the environment variable +.B TOP +set to \*(lq\-I\*(rq may use the command \*(lqtop \-I\*(rq to see idle processes. +.SH "INTERACTIVE MODE" +When +.I top +is running in \*(lqinteractive mode\*(rq, it reads commands from the +terminal and acts upon them accordingly. In this mode, the terminal is +put in \*(lqCBREAK\*(rq, so that a character will be +processed as soon as it is typed. Almost always, a key will be +pressed when +.I top +is between displays; that is, while it is waiting for +.I time +seconds to elapse. If this is the case, the command will be +processed and the display will be updated immediately thereafter +(reflecting any changes that the command may have specified). This +happens even if the command was incorrect. If a key is pressed while +.I top +is in the middle of updating the display, it will finish the update and +then process the command. Some commands require additional information, +and the user will be prompted accordingly. While typing this information +in, the user's erase and kill keys (as set up by the command +.IR stty ) +are recognized, and a newline terminates the input. +.PP +These commands are currently recognized (^L refers to control-L): +.TP +.B ^L +Redraw the screen. +.IP "\fBh\fP\ or\ \fB?\fP" +Display a summary of the commands (help screen). +.TP +.B q +Quit +.IR top. +.TP +.B d +Change the number of displays to show (prompt for new number). +Remember that the next display counts as one, so typing +.B d1 +will make +.I top +show one final display and then immediately exit. +.TP +.B n or # +Change the number of processes to display (prompt for new number). +.TP +.B s +Change the number of seconds to delay between displays +(prompt for new number). +.TP +.B k +Send a signal (\*(lqkill\*(rq by default) to a list of processes. This +acts similarly to the command +.IR kill (1)). +.TP +.B r +Change the priority (the \*(lqnice\*(rq) of a list of processes. +This acts similarly to the command +.IR renice (8)). +.TP +.B u +Display only processes owned by a specific username (prompt for username). +If the username specified is simply \*(lq+\*(rq, then processes belonging +to all users will be displayed. +.TP +.B e +Display a list of system errors (if any) generated by the last +.BR k ill +or +.BR r enice +command. +.TP +.B i +(or +.BR I) +Toggle the display of idle processes. +.SH "THE DISPLAY" +The actual display varies depending on the specific variant of Unix +that the machine is running. This description may not exactly match +what is seen by top running on this particular machine. Differences +are listed at the end of this manual entry. +.PP +The top few lines of the display show general information +about the state of the system, including +the last process id assigned to a process (on most systems), +the three load averages, +the current time, +the number of existing processes, +the number of processes in each state +(sleeping, running, starting, zombies, and stopped), +and a percentage of time spent in each of the processor states +(user, nice, system, and idle). +It also includes information about physial and virtual memory allocation. +.PP +The remainder of the screen displays information about individual +processes. This display is similar in spirit to +.IR ps (1) +but it is not exactly the same. PID is the process id, USERNAME is the name +of the process's owner (if +.B \-u +is specified, a UID column will be substituted for USERNAME), +PRI is the current priority of the process, +NICE is the nice amount (in the range \-20 to 20), +SIZE is the total size of the process (text, data, and stack), +RES is the current amount of resident memory (both SIZE and RES are +given in kilobytes), +STATE is the current state (one of \*(lqsleep\*(rq, \*(lqWAIT\*(rq, +\*(lqrun\*(rq, \*(lqidl\*(rq, \*(lqzomb\*(rq, or \*(lqstop\*(rq), +TIME is the number of system and user cpu seconds that the process has used, +WCPU, when displayed, is the weighted cpu percentage (this is the same +value that +.IR ps (1) +displays as CPU), +CPU is the raw percentage and is the field that is sorted to determine +the order of the processes, and +COMMAND is the name of the command that the process is currently running +(if the process is swapped out, this column is marked \*(lq\*(rq). +.SH NOTES +The \*(lqABANDONED\*(rq state (known in the kernel as \*(lqSWAIT\*(rq) was +abandoned, thus the name. A process should never end up in this state. +.SH AUTHOR +William LeFebvre, EECS Department, Northwestern University +.SH ENVIRONMENT +.DT +TOP user-configurable defaults for options. +.SH FILES +.DT +/dev/kmem kernel memory +.br +/dev/mem physical memory +.br +/etc/passwd used to map uid numbers to user names +.br +/vmunix system image +.SH BUGS +Don't shoot me, but the default for +.B \-I +has changed once again. So many people were confused by the fact that +.I top +wasn't showing them all the processes that I have decided to make the +default behavior show idle processes, just like it did in version 2. +But to appease folks who can't stand that behavior, I have added the +ability to set \*(lqdefault\*(rq options in the environment variable +.B TOP +(see the OPTIONS section). Those who want the behavior that version +3.0 had need only set the environment variable +.B TOP +to \*(lq\-I\*(rq. +.PP +The command name for swapped processes should be tracked down, but this +would make the program run slower. +.PP +As with +.IR ps (1), +things can change while +.I top +is collecting information for an update. The picture it gives is only a +close approximation to reality. +.SH "SEE ALSO" +kill(1), +ps(1), +stty(1), +mem(4), +renice(8) diff --git a/contrib/top/top.c b/contrib/top/top.c new file mode 100644 index 0000000..55bee4e --- /dev/null +++ b/contrib/top/top.c @@ -0,0 +1,996 @@ +char *copyright = + "Copyright (c) 1984 through 1996, William LeFebvre"; + +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * See the file "Changes" for information on version-to-version changes. + */ + +/* + * This file contains "main" and other high-level routines. + */ + +/* + * The following preprocessor variables, when defined, are used to + * distinguish between different Unix implementations: + * + * SIGHOLD - use SVR4 sighold function when defined + * SIGRELSE - use SVR4 sigrelse function when defined + * FD_SET - macros FD_SET and FD_ZERO are used when defined + */ + +#include "os.h" +#include +#include +#include +#include + +/* includes specific to top */ +#include "display.h" /* interface to display package */ +#include "screen.h" /* interface to screen package */ +#include "top.h" +#include "top.local.h" +#include "boolean.h" +#include "machine.h" +#include "utils.h" + +/* Size of the stdio buffer given to stdout */ +#define Buffersize 2048 + +/* The buffer that stdio will use */ +char stdoutbuf[Buffersize]; + +/* build Signal masks */ +#define Smask(s) (1 << ((s) - 1)) + +/* for system errors */ +extern int errno; + +/* for getopt: */ +extern int optind; +extern char *optarg; + +/* imported from screen.c */ +extern int overstrike; + +/* signal handling routines */ +sigret_t leave(); +sigret_t onalrm(); +sigret_t tstop(); +#ifdef SIGWINCH +sigret_t winch(); +#endif + +/* internal routines */ +void quit(); + +/* values which need to be accessed by signal handlers */ +static int max_topn; /* maximum displayable processes */ + +/* miscellaneous things */ +char *myname = "top"; +jmp_buf jmp_int; + +/* routines that don't return int */ + +char *username(); +char *ctime(); +char *kill_procs(); +char *renice_procs(); + +#ifdef ORDER +extern int (*proc_compares[])(); +#else +extern int proc_compare(); +#endif +time_t time(); + +caddr_t get_process_info(); + +/* different routines for displaying the user's identification */ +/* (values assigned to get_userid) */ +char *username(); +char *itoa7(); + +/* display routines that need to be predeclared */ +int i_loadave(); +int u_loadave(); +int i_procstates(); +int u_procstates(); +int i_cpustates(); +int u_cpustates(); +int i_memory(); +int u_memory(); +int i_message(); +int u_message(); +int i_header(); +int u_header(); +int i_process(); +int u_process(); + +/* pointers to display routines */ +int (*d_loadave)() = i_loadave; +int (*d_procstates)() = i_procstates; +int (*d_cpustates)() = i_cpustates; +int (*d_memory)() = i_memory; +int (*d_message)() = i_message; +int (*d_header)() = i_header; +int (*d_process)() = i_process; + + +main(argc, argv) + +int argc; +char *argv[]; + +{ + register int i; + register int active_procs; + register int change; + + struct system_info system_info; + struct statics statics; + caddr_t processes; + + static char tempbuf1[50]; + static char tempbuf2[50]; + int old_sigmask; /* only used for BSD-style signals */ + int topn = Default_TOPN; + int delay = Default_DELAY; + int displays = 0; /* indicates unspecified */ + time_t curr_time; + char *(*get_userid)() = username; + char *uname_field = "USERNAME"; + char *header_text; + char *env_top; + char **preset_argv; + int preset_argc = 0; + char **av; + int ac; + char dostates = No; + char do_unames = Yes; + char interactive = Maybe; + char warnings = 0; +#if Default_TOPN == Infinity + char topn_specified = No; +#endif + char ch; + char *iptr; + char no_command = 1; + struct timeval timeout; + struct process_select ps; +#ifdef ORDER + char *order_name = NULL; + int order_index = 0; +#endif +#ifndef FD_SET + /* FD_SET and friends are not present: fake it */ + typedef int fd_set; +#define FD_ZERO(x) (*(x) = 0) +#define FD_SET(f, x) (*(x) = f) +#endif + fd_set readfds; + +#ifdef ORDER + static char command_chars[] = "\f qh?en#sdkriIuo"; +#else + static char command_chars[] = "\f qh?en#sdkriIu"; +#endif +/* these defines enumerate the "strchr"s of the commands in command_chars */ +#define CMD_redraw 0 +#define CMD_update 1 +#define CMD_quit 2 +#define CMD_help1 3 +#define CMD_help2 4 +#define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */ +#define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */ +#define CMD_number1 6 +#define CMD_number2 7 +#define CMD_delay 8 +#define CMD_displays 9 +#define CMD_kill 10 +#define CMD_renice 11 +#define CMD_idletog 12 +#define CMD_idletog2 13 +#define CMD_user 14 +#ifdef ORDER +#define CMD_order 15 +#endif + + /* set the buffer for stdout */ +#ifdef DEBUG + setbuffer(stdout, NULL, 0); +#else + setbuffer(stdout, stdoutbuf, Buffersize); +#endif + + /* get our name */ + if (argc > 0) + { + if ((myname = strrchr(argv[0], '/')) == 0) + { + myname = argv[0]; + } + else + { + myname++; + } + } + + /* initialize some selection options */ + ps.idle = Yes; + ps.system = No; + ps.uid = -1; + ps.command = NULL; + + /* get preset options from the environment */ + if ((env_top = getenv("TOP")) != NULL) + { + av = preset_argv = argparse(env_top, &preset_argc); + ac = preset_argc; + + /* set the dummy argument to an explanatory message, in case + getopt encounters a bad argument */ + preset_argv[0] = "while processing environment"; + } + + /* process options */ + do { + /* if we're done doing the presets, then process the real arguments */ + if (preset_argc == 0) + { + ac = argc; + av = argv; + + /* this should keep getopt happy... */ + optind = 1; + } + + while ((i = getopt(ac, av, "SIbinqus:d:U:o:")) != EOF) + { + switch(i) + { + case 'u': /* toggle uid/username display */ + do_unames = !do_unames; + break; + + case 'U': /* display only username's processes */ + if ((ps.uid = userid(optarg)) == -1) + { + fprintf(stderr, "%s: unknown user\n", optarg); + exit(1); + } + break; + + case 'S': /* show system processes */ + ps.system = !ps.system; + break; + + case 'I': /* show idle processes */ + ps.idle = !ps.idle; + break; + + case 'i': /* go interactive regardless */ + interactive = Yes; + break; + + case 'n': /* batch, or non-interactive */ + case 'b': + interactive = No; + break; + + case 'd': /* number of displays to show */ + if ((i = atoiwi(optarg)) == Invalid || i == 0) + { + fprintf(stderr, + "%s: warning: display count should be positive -- option ignored\n", + myname); + warnings++; + } + else + { + displays = i; + } + break; + + case 's': + if ((delay = atoi(optarg)) < 0) + { + fprintf(stderr, + "%s: warning: seconds delay should be non-negative -- using default\n", + myname); + delay = Default_DELAY; + warnings++; + } + break; + + case 'q': /* be quick about it */ + /* only allow this if user is really root */ + if (getuid() == 0) + { + /* be very un-nice! */ + (void) nice(-20); + } + else + { + fprintf(stderr, + "%s: warning: `-q' option can only be used by root\n", + myname); + warnings++; + } + break; + + case 'o': /* select sort order */ +#ifdef ORDER + order_name = optarg; +#else + fprintf(stderr, + "%s: this platform does not support arbitrary ordering. Sorry.\n", + myname); + warnings++; +#endif + break; + + default: + fprintf(stderr, "\ +Top version %s\n\ +Usage: %s [-ISbinqu] [-d x] [-s x] [-o field] [-U username] [number]\n", + version_string(), myname); + exit(1); + } + } + + /* get count of top processes to display (if any) */ + if (optind < ac) + { + if ((topn = atoiwi(av[optind])) == Invalid) + { + fprintf(stderr, + "%s: warning: process display count should be non-negative -- using default\n", + myname); + warnings++; + } +#if Default_TOPN == Infinity + else + { + topn_specified = Yes; + } +#endif + } + + /* tricky: remember old value of preset_argc & set preset_argc = 0 */ + i = preset_argc; + preset_argc = 0; + + /* repeat only if we really did the preset arguments */ + } while (i != 0); + + /* set constants for username/uid display correctly */ + if (!do_unames) + { + uname_field = " UID "; + get_userid = itoa7; + } + + /* initialize the kernel memory interface */ + if (machine_init(&statics) == -1) + { + exit(1); + } + +#ifdef ORDER + /* determine sorting order index, if necessary */ + if (order_name != NULL) + { + if ((order_index = string_index(order_name, statics.order_names)) == -1) + { + char **pp; + + fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n", + myname, order_name); + fprintf(stderr, "\tTry one of these:"); + pp = statics.order_names; + while (*pp != NULL) + { + fprintf(stderr, " %s", *pp++); + } + fputc('\n', stderr); + exit(1); + } + } +#endif + +#ifdef no_initialization_needed + /* initialize the hashing stuff */ + if (do_unames) + { + init_hash(); + } +#endif + + /* initialize termcap */ + init_termcap(interactive); + + /* get the string to use for the process area header */ + header_text = format_header(uname_field); + + /* initialize display interface */ + if ((max_topn = display_init(&statics)) == -1) + { + fprintf(stderr, "%s: can't allocate sufficient memory\n", myname); + exit(4); + } + + /* print warning if user requested more processes than we can display */ + if (topn > max_topn) + { + fprintf(stderr, + "%s: warning: this terminal can only display %d processes.\n", + myname, max_topn); + warnings++; + } + + /* adjust for topn == Infinity */ + if (topn == Infinity) + { + /* + * For smart terminals, infinity really means everything that can + * be displayed, or Largest. + * On dumb terminals, infinity means every process in the system! + * We only really want to do that if it was explicitly specified. + * This is always the case when "Default_TOPN != Infinity". But if + * topn wasn't explicitly specified and we are on a dumb terminal + * and the default is Infinity, then (and only then) we use + * "Nominal_TOPN" instead. + */ +#if Default_TOPN == Infinity + topn = smart_terminal ? Largest : + (topn_specified ? Largest : Nominal_TOPN); +#else + topn = Largest; +#endif + } + + /* set header display accordingly */ + display_header(topn > 0); + + /* determine interactive state */ + if (interactive == Maybe) + { + interactive = smart_terminal; + } + + /* if # of displays not specified, fill it in */ + if (displays == 0) + { + displays = smart_terminal ? Infinity : 1; + } + + /* hold interrupt signals while setting up the screen and the handlers */ +#ifdef SIGHOLD + sighold(SIGINT); + sighold(SIGQUIT); + sighold(SIGTSTP); +#else + old_sigmask = sigblock(Smask(SIGINT) | Smask(SIGQUIT) | Smask(SIGTSTP)); +#endif + init_screen(); + (void) signal(SIGINT, leave); + (void) signal(SIGQUIT, leave); + (void) signal(SIGTSTP, tstop); +#ifdef SIGWINCH + (void) signal(SIGWINCH, winch); +#endif +#ifdef SIGRELSE + sigrelse(SIGINT); + sigrelse(SIGQUIT); + sigrelse(SIGTSTP); +#else + (void) sigsetmask(old_sigmask); +#endif + if (warnings) + { + fputs("....", stderr); + fflush(stderr); /* why must I do this? */ + sleep((unsigned)(3 * warnings)); + fputc('\n', stderr); + } + + /* setup the jump buffer for stops */ + if (setjmp(jmp_int) != 0) + { + /* control ends up here after an interrupt */ + reset_display(); + } + + /* + * main loop -- repeat while display count is positive or while it + * indicates infinity (by being -1) + */ + + while ((displays == -1) || (displays-- > 0)) + { + /* get the current stats */ + get_system_info(&system_info); + + /* get the current set of processes */ + processes = + get_process_info(&system_info, + &ps, +#ifdef ORDER + proc_compares[order_index]); +#else + proc_compare); +#endif + + /* display the load averages */ + (*d_loadave)(system_info.last_pid, + system_info.load_avg); + + /* display the current time */ + /* this method of getting the time SHOULD be fairly portable */ + time(&curr_time); + i_timeofday(&curr_time); + + /* display process state breakdown */ + (*d_procstates)(system_info.p_total, + system_info.procstates); + + /* display the cpu state percentage breakdown */ + if (dostates) /* but not the first time */ + { + (*d_cpustates)(system_info.cpustates); + } + else + { + /* we'll do it next time */ + if (smart_terminal) + { + z_cpustates(); + } + else + { + putchar('\n'); + } + dostates = Yes; + } + + /* display memory stats */ + (*d_memory)(system_info.memory); + + /* handle message area */ + (*d_message)(); + + /* update the header area */ + (*d_header)(header_text); + + if (topn > 0) + { + /* determine number of processes to actually display */ + /* this number will be the smallest of: active processes, + number user requested, number current screen accomodates */ + active_procs = system_info.p_active; + if (active_procs > topn) + { + active_procs = topn; + } + if (active_procs > max_topn) + { + active_procs = max_topn; + } + + /* now show the top "n" processes. */ + for (i = 0; i < active_procs; i++) + { + (*d_process)(i, format_next_process(processes, get_userid)); + } + } + else + { + i = 0; + } + + /* do end-screen processing */ + u_endscreen(i); + + /* now, flush the output buffer */ + fflush(stdout); + + /* only do the rest if we have more displays to show */ + if (displays) + { + /* switch out for new display on smart terminals */ + if (smart_terminal) + { + if (overstrike) + { + reset_display(); + } + else + { + d_loadave = u_loadave; + d_procstates = u_procstates; + d_cpustates = u_cpustates; + d_memory = u_memory; + d_message = u_message; + d_header = u_header; + d_process = u_process; + } + } + + no_command = Yes; + if (!interactive) + { + /* set up alarm */ + (void) signal(SIGALRM, onalrm); + (void) alarm((unsigned)delay); + + /* wait for the rest of it .... */ + pause(); + } + else while (no_command) + { + /* assume valid command unless told otherwise */ + no_command = No; + + /* set up arguments for select with timeout */ + FD_ZERO(&readfds); + FD_SET(1, &readfds); /* for standard input */ + timeout.tv_sec = delay; + timeout.tv_usec = 0; + + /* wait for either input or the end of the delay period */ + if (select(32, &readfds, (fd_set *)NULL, (fd_set *)NULL, &timeout) > 0) + { + int newval; + char *errmsg; + + /* something to read -- clear the message area first */ + clear_message(); + + /* now read it and convert to command strchr */ + /* (use "change" as a temporary to hold strchr) */ + (void) read(0, &ch, 1); + if ((iptr = strchr(command_chars, ch)) == NULL) + { + /* illegal command */ + new_message(MT_standout, " Command not understood"); + putchar('\r'); + no_command = Yes; + } + else + { + change = iptr - command_chars; + if (overstrike && change > CMD_OSLIMIT) + { + /* error */ + new_message(MT_standout, + " Command cannot be handled by this terminal"); + putchar('\r'); + no_command = Yes; + } + else switch(change) + { + case CMD_redraw: /* redraw screen */ + reset_display(); + break; + + case CMD_update: /* merely update display */ + /* is the load average high? */ + if (system_info.load_avg[0] > LoadMax) + { + /* yes, go home for visual feedback */ + go_home(); + fflush(stdout); + } + break; + + case CMD_quit: /* quit */ + quit(0); + /*NOTREACHED*/ + break; + + case CMD_help1: /* help */ + case CMD_help2: + reset_display(); + clear(); + show_help(); + standout("Hit any key to continue: "); + fflush(stdout); + (void) read(0, &ch, 1); + break; + + case CMD_errors: /* show errors */ + if (error_count() == 0) + { + new_message(MT_standout, + " Currently no errors to report."); + putchar('\r'); + no_command = Yes; + } + else + { + reset_display(); + clear(); + show_errors(); + standout("Hit any key to continue: "); + fflush(stdout); + (void) read(0, &ch, 1); + } + break; + + case CMD_number1: /* new number */ + case CMD_number2: + new_message(MT_standout, + "Number of processes to show: "); + newval = readline(tempbuf1, 8, Yes); + if (newval > -1) + { + if (newval > max_topn) + { + new_message(MT_standout | MT_delayed, + " This terminal can only display %d processes.", + max_topn); + putchar('\r'); + } + + if (newval == 0) + { + /* inhibit the header */ + display_header(No); + } + else if (newval > topn && topn == 0) + { + /* redraw the header */ + display_header(Yes); + d_header = i_header; + } + topn = newval; + } + break; + + case CMD_delay: /* new seconds delay */ + new_message(MT_standout, "Seconds to delay: "); + if ((i = readline(tempbuf1, 8, Yes)) > -1) + { + delay = i; + } + clear_message(); + break; + + case CMD_displays: /* change display count */ + new_message(MT_standout, + "Displays to show (currently %s): ", + displays == -1 ? "infinite" : + itoa(displays)); + if ((i = readline(tempbuf1, 10, Yes)) > 0) + { + displays = i; + } + else if (i == 0) + { + quit(0); + } + clear_message(); + break; + + case CMD_kill: /* kill program */ + new_message(0, "kill "); + if (readline(tempbuf2, sizeof(tempbuf2), No) > 0) + { + if ((errmsg = kill_procs(tempbuf2)) != NULL) + { + new_message(MT_standout, errmsg); + putchar('\r'); + no_command = Yes; + } + } + else + { + clear_message(); + } + break; + + case CMD_renice: /* renice program */ + new_message(0, "renice "); + if (readline(tempbuf2, sizeof(tempbuf2), No) > 0) + { + if ((errmsg = renice_procs(tempbuf2)) != NULL) + { + new_message(MT_standout, errmsg); + putchar('\r'); + no_command = Yes; + } + } + else + { + clear_message(); + } + break; + + case CMD_idletog: + case CMD_idletog2: + ps.idle = !ps.idle; + new_message(MT_standout | MT_delayed, + " %sisplaying idle processes.", + ps.idle ? "D" : "Not d"); + putchar('\r'); + break; + + case CMD_user: + new_message(MT_standout, + "Username to show: "); + if (readline(tempbuf2, sizeof(tempbuf2), No) > 0) + { + if (tempbuf2[0] == '+' && + tempbuf2[1] == '\0') + { + ps.uid = -1; + } + else if ((i = userid(tempbuf2)) == -1) + { + new_message(MT_standout, + " %s: unknown user", tempbuf2); + no_command = Yes; + } + else + { + ps.uid = i; + } + putchar('\r'); + } + else + { + clear_message(); + } + break; + +#ifdef ORDER + case CMD_order: + new_message(MT_standout, + "Order to sort: "); + if (readline(tempbuf2, sizeof(tempbuf2), No) > 0) + { + if ((i = string_index(tempbuf2, statics.order_names)) == -1) + { + new_message(MT_standout, + " %s: unrecognized sorting order", tempbuf2); + no_command = Yes; + } + else + { + order_index = i; + } + putchar('\r'); + } + else + { + clear_message(); + } + break; +#endif + + default: + new_message(MT_standout, " BAD CASE IN SWITCH!"); + putchar('\r'); + } + } + + /* flush out stuff that may have been written */ + fflush(stdout); + } + } + } + } + + quit(0); + /*NOTREACHED*/ +} + +/* + * reset_display() - reset all the display routine pointers so that entire + * screen will get redrawn. + */ + +reset_display() + +{ + d_loadave = i_loadave; + d_procstates = i_procstates; + d_cpustates = i_cpustates; + d_memory = i_memory; + d_message = i_message; + d_header = i_header; + d_process = i_process; +} + +/* + * signal handlers + */ + +sigret_t leave() /* exit under normal conditions -- INT handler */ + +{ + end_screen(); + exit(0); +} + +sigret_t tstop(i) /* SIGTSTP handler */ + +int i; + +{ + /* move to the lower left */ + end_screen(); + fflush(stdout); + + /* default the signal handler action */ + (void) signal(SIGTSTP, SIG_DFL); + + /* unblock the signal and send ourselves one */ +#ifdef SIGRELSE + sigrelse(SIGTSTP); +#else + (void) sigsetmask(sigblock(0) & ~(1 << (SIGTSTP - 1))); +#endif + (void) kill(0, SIGTSTP); + + /* reset the signal handler */ + (void) signal(SIGTSTP, tstop); + + /* reinit screen */ + reinit_screen(); + + /* jump to appropriate place */ + longjmp(jmp_int, 1); + + /*NOTREACHED*/ +} + +#ifdef SIGWINCH +sigret_t winch(i) /* SIGWINCH handler */ + +int i; + +{ + /* reascertain the screen dimensions */ + get_screensize(); + + /* tell display to resize */ + max_topn = display_resize(); + + /* reset the signal handler */ + (void) signal(SIGWINCH, winch); + + /* jump to appropriate place */ + longjmp(jmp_int, 1); +} +#endif + +void quit(status) /* exit under duress */ + +int status; + +{ + end_screen(); + exit(status); + /*NOTREACHED*/ +} + +sigret_t onalrm() /* SIGALRM handler */ + +{ + /* this is only used in batch mode to break out of the pause() */ + /* return; */ +} + diff --git a/contrib/top/top.h b/contrib/top/top.h new file mode 100644 index 0000000..8f50922 --- /dev/null +++ b/contrib/top/top.h @@ -0,0 +1,36 @@ +/* + * Top - a top users display for Berkeley Unix + * + * General (global) definitions + */ + +/* Current major version number */ +#define VERSION 3 + +/* Number of lines of header information on the standard screen */ +#define Header_lines 6 + +/* Maximum number of columns allowed for display */ +#define MAX_COLS 128 + +/* Log base 2 of 1024 is 10 (2^10 == 1024) */ +#define LOG1024 10 + +char *itoa(); +char *itoa7(); + +char *version_string(); + +/* Special atoi routine returns either a non-negative number or one of: */ +#define Infinity -1 +#define Invalid -2 + +/* maximum number we can have */ +#define Largest 0x7fffffff + +/* + * The entire display is based on these next numbers being defined as is. + */ + +#define NUM_AVERAGES 3 + diff --git a/contrib/top/top.local.H b/contrib/top/top.local.H new file mode 100644 index 0000000..9eb7a64e5 --- /dev/null +++ b/contrib/top/top.local.H @@ -0,0 +1,68 @@ +/* + * Top - a top users display for Berkeley Unix + * + * Definitions for things that might vary between installations. + */ + +/* + * The space command forces an immediate update. Sometimes, on loaded + * systems, this update will take a significant period of time (because all + * the output is buffered). So, if the short-term load average is above + * "LoadMax", then top will put the cursor home immediately after the space + * is pressed before the next update is attempted. This serves as a visual + * acknowledgement of the command. On Suns, "LoadMax" will get multiplied by + * "FSCALE" before being compared to avenrun[0]. Therefore, "LoadMax" + * should always be specified as a floating point number. + */ +#ifndef LoadMax +#define LoadMax %LoadMax% +#endif + +/* + * "Table_size" defines the size of the hash tables used to map uid to + * username. The number of users in /etc/passwd CANNOT be greater than + * this number. If the error message "table overflow: too many users" + * is printed by top, then "Table_size" needs to be increased. Things will + * work best if the number is a prime number that is about twice the number + * of lines in /etc/passwd. + */ +#ifndef Table_size +#define Table_size %TableSize% +#endif + +/* + * "Nominal_TOPN" is used as the default TOPN when Default_TOPN is Infinity + * and the output is a dumb terminal. If we didn't do this, then + * installations who use a default TOPN of Infinity will get every + * process in the system when running top on a dumb terminal (or redirected + * to a file). Note that Nominal_TOPN is a default: it can still be + * overridden on the command line, even with the value "infinity". + */ +#ifndef Nominal_TOPN +#define Nominal_TOPN %NominalTopn% +#endif + +#ifndef Default_TOPN +#define Default_TOPN %topn% +#endif + +#ifndef Default_DELAY +#define Default_DELAY %delay% +#endif + +/* + * If the local system's getpwnam interface uses random access to retrieve + * a record (i.e.: 4.3 systems, Sun "yellow pages"), then defining + * RANDOM_PW will take advantage of that fact. If RANDOM_PW is defined, + * then getpwnam is used and the result is cached. If not, then getpwent + * is used to read and cache the password entries sequentially until the + * desired one is found. + * + * We initially set RANDOM_PW to something which is controllable by the + * Configure script. Then if its value is 0, we undef it. + */ + +#define RANDOM_PW %random% +#if RANDOM_PW == 0 +#undef RANDOM_PW +#endif diff --git a/contrib/top/username.c b/contrib/top/username.c new file mode 100644 index 0000000..4a98a2b --- /dev/null +++ b/contrib/top/username.c @@ -0,0 +1,185 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * Username translation code for top. + * + * These routines handle uid to username mapping. + * They use a hashing table scheme to reduce reading overhead. + * For the time being, these are very straightforward hashing routines. + * Maybe someday I'll put in something better. But with the advent of + * "random access" password files, it might not be worth the effort. + * + * Changes to these have been provided by John Gilmore (gnu@toad.com). + * + * The hash has been simplified in this release, to avoid the + * table overflow problems of previous releases. If the value + * at the initial hash location is not right, it is replaced + * by the right value. Collisions will cause us to call getpw* + * but hey, this is a cache, not the Library of Congress. + * This makes the table size independent of the passwd file size. + */ + +#include +#include + +#include "top.local.h" +#include "utils.h" + +struct hash_el { + int uid; + char name[9]; +}; + +#define is_empty_hash(x) (hash_table[x].name[0] == 0) + +/* simple minded hashing function */ +/* Uid "nobody" is -2 results in hashit(-2) = -2 which is out of bounds for + the hash_table. Applied abs() function to fix. 2/16/96 tpugh +*/ +#define hashit(i) (abs(i) % Table_size) + +/* K&R requires that statically declared tables be initialized to zero. */ +/* We depend on that for hash_table and YOUR compiler had BETTER do it! */ +struct hash_el hash_table[Table_size]; + +init_hash() + +{ + /* + * There used to be some steps we had to take to initialize things. + * We don't need to do that anymore, but we will leave this stub in + * just in case future changes require initialization steps. + */ +} + +char *username(uid) + +register int uid; + +{ + register int hashindex; + + hashindex = hashit(uid); + if (is_empty_hash(hashindex) || (hash_table[hashindex].uid != uid)) + { + /* not here or not right -- get it out of passwd */ + hashindex = get_user(uid); + } + return(hash_table[hashindex].name); +} + +int userid(username) + +char *username; + +{ + struct passwd *pwd; + + /* Eventually we want this to enter everything in the hash table, + but for now we just do it simply and remember just the result. + */ + + if ((pwd = getpwnam(username)) == NULL) + { + return(-1); + } + + /* enter the result in the hash table */ + enter_user(pwd->pw_uid, username, 1); + + /* return our result */ + return(pwd->pw_uid); +} + +int enter_user(uid, name, wecare) + +register int uid; +register char *name; +int wecare; /* 1 = enter it always, 0 = nice to have */ + +{ + register int hashindex; + +#ifdef DEBUG + fprintf(stderr, "enter_hash(%d, %s, %d)\n", uid, name, wecare); +#endif + + hashindex = hashit(uid); + + if (!is_empty_hash(hashindex)) + { + if (!wecare) + return 0; /* Don't clobber a slot for trash */ + if (hash_table[hashindex].uid == uid) + return(hashindex); /* Fortuitous find */ + } + + /* empty or wrong slot -- fill it with new value */ + hash_table[hashindex].uid = uid; + (void) strncpy(hash_table[hashindex].name, name, 8); + return(hashindex); +} + +/* + * Get a userid->name mapping from the system. + * If the passwd database is hashed (#define RANDOM_PW), we + * just handle this uid. Otherwise we scan the passwd file + * and cache any entries we pass over while looking. + */ + +int get_user(uid) + +register int uid; + +{ + struct passwd *pwd; + +#ifdef RANDOM_PW + /* no performance penalty for using getpwuid makes it easy */ + if ((pwd = getpwuid(uid)) != NULL) + { + return(enter_user(pwd->pw_uid, pwd->pw_name, 1)); + } +#else + + int from_start = 0; + + /* + * If we just called getpwuid each time, things would be very slow + * since that just iterates through the passwd file each time. So, + * we walk through the file instead (using getpwent) and cache each + * entry as we go. Once the right record is found, we cache it and + * return immediately. The next time we come in, getpwent will get + * the next record. In theory, we never have to read the passwd file + * a second time (because we cache everything we read). But in + * practice, the cache may not be large enough, so if we don't find + * it the first time we have to scan the file a second time. This + * is not very efficient, but it will do for now. + */ + + while (from_start++ < 2) + { + while ((pwd = getpwent()) != NULL) + { + if (pwd->pw_uid == uid) + { + return(enter_user(pwd->pw_uid, pwd->pw_name, 1)); + } + (void) enter_user(pwd->pw_uid, pwd->pw_name, 0); + } + /* try again */ + setpwent(); + } +#endif + /* if we can't find the name at all, then use the uid as the name */ + return(enter_user(uid, itoa7(uid), 1)); +} diff --git a/contrib/top/utils.c b/contrib/top/utils.c new file mode 100644 index 0000000..67b64e9 --- /dev/null +++ b/contrib/top/utils.c @@ -0,0 +1,453 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * This file contains various handy utilities used by top. + */ + +#include "top.h" +#include "os.h" + +int atoiwi(str) + +char *str; + +{ + register int len; + + len = strlen(str); + if (len != 0) + { + if (strncmp(str, "infinity", len) == 0 || + strncmp(str, "all", len) == 0 || + strncmp(str, "maximum", len) == 0) + { + return(Infinity); + } + else if (str[0] == '-') + { + return(Invalid); + } + else + { + return(atoi(str)); + } + } + return(0); +} + +/* + * itoa - convert integer (decimal) to ascii string for positive numbers + * only (we don't bother with negative numbers since we know we + * don't use them). + */ + + /* + * How do we know that 16 will suffice? + * Because the biggest number that we will + * ever convert will be 2^32-1, which is 10 + * digits. + */ + +char *itoa(val) + +register int val; + +{ + register char *ptr; + static char buffer[16]; /* result is built here */ + /* 16 is sufficient since the largest number + we will ever convert will be 2^32-1, + which is 10 digits. */ + + ptr = buffer + sizeof(buffer); + *--ptr = '\0'; + if (val == 0) + { + *--ptr = '0'; + } + else while (val != 0) + { + *--ptr = (val % 10) + '0'; + val /= 10; + } + return(ptr); +} + +/* + * itoa7(val) - like itoa, except the number is right justified in a 7 + * character field. This code is a duplication of itoa instead of + * a front end to a more general routine for efficiency. + */ + +char *itoa7(val) + +register int val; + +{ + register char *ptr; + static char buffer[16]; /* result is built here */ + /* 16 is sufficient since the largest number + we will ever convert will be 2^32-1, + which is 10 digits. */ + + ptr = buffer + sizeof(buffer); + *--ptr = '\0'; + if (val == 0) + { + *--ptr = '0'; + } + else while (val != 0) + { + *--ptr = (val % 10) + '0'; + val /= 10; + } + while (ptr > buffer + sizeof(buffer) - 7) + { + *--ptr = ' '; + } + return(ptr); +} + +/* + * digits(val) - return number of decimal digits in val. Only works for + * positive numbers. If val <= 0 then digits(val) == 0. + */ + +int digits(val) + +int val; + +{ + register int cnt = 0; + + while (val > 0) + { + cnt++; + val /= 10; + } + return(cnt); +} + +/* + * strecpy(to, from) - copy string "from" into "to" and return a pointer + * to the END of the string "to". + */ + +char *strecpy(to, from) + +register char *to; +register char *from; + +{ + while ((*to++ = *from++) != '\0'); + return(--to); +} + +/* + * string_index(string, array) - find string in array and return index + */ + +int string_index(string, array) + +char *string; +char **array; + +{ + register int i = 0; + + while (*array != NULL) + { + if (strcmp(string, *array) == 0) + { + return(i); + } + array++; + i++; + } + return(-1); +} + +/* + * argparse(line, cntp) - parse arguments in string "line", separating them + * out into an argv-like array, and setting *cntp to the number of + * arguments encountered. This is a simple parser that doesn't understand + * squat about quotes. + */ + +char **argparse(line, cntp) + +char *line; +int *cntp; + +{ + register char *from; + register char *to; + register int cnt; + register int ch; + int length; + int lastch; + register char **argv; + char **argarray; + char *args; + + /* unfortunately, the only real way to do this is to go thru the + input string twice. */ + + /* step thru the string counting the white space sections */ + from = line; + lastch = cnt = length = 0; + while ((ch = *from++) != '\0') + { + length++; + if (ch == ' ' && lastch != ' ') + { + cnt++; + } + lastch = ch; + } + + /* add three to the count: one for the initial "dummy" argument, + one for the last argument and one for NULL */ + cnt += 3; + + /* allocate a char * array to hold the pointers */ + argarray = (char **)malloc(cnt * sizeof(char *)); + + /* allocate another array to hold the strings themselves */ + args = (char *)malloc(length+2); + + /* initialization for main loop */ + from = line; + to = args; + argv = argarray; + lastch = '\0'; + + /* create a dummy argument to keep getopt happy */ + *argv++ = to; + *to++ = '\0'; + cnt = 2; + + /* now build argv while copying characters */ + *argv++ = to; + while ((ch = *from++) != '\0') + { + if (ch != ' ') + { + if (lastch == ' ') + { + *to++ = '\0'; + *argv++ = to; + cnt++; + } + *to++ = ch; + } + lastch = ch; + } + *to++ = '\0'; + + /* set cntp and return the allocated array */ + *cntp = cnt; + return(argarray); +} + +/* + * percentages(cnt, out, new, old, diffs) - calculate percentage change + * between array "old" and "new", putting the percentages i "out". + * "cnt" is size of each array and "diffs" is used for scratch space. + * The array "old" is updated on each call. + * The routine assumes modulo arithmetic. This function is especially + * useful on BSD mchines for calculating cpu state percentages. + */ + +long percentages(cnt, out, new, old, diffs) + +int cnt; +int *out; +register long *new; +register long *old; +long *diffs; + +{ + register int i; + register long change; + register long total_change; + register long *dp; + long half_total; + + /* initialization */ + total_change = 0; + dp = diffs; + + /* calculate changes for each state and the overall change */ + for (i = 0; i < cnt; i++) + { + if ((change = *new - *old) < 0) + { + /* this only happens when the counter wraps */ + change = (int) + ((unsigned long)*new-(unsigned long)*old); + } + total_change += (*dp++ = change); + *old++ = *new++; + } + + /* avoid divide by zero potential */ + if (total_change == 0) + { + total_change = 1; + } + + /* calculate percentages based on overall change, rounding up */ + half_total = total_change / 2l; + for (i = 0; i < cnt; i++) + { + *out++ = (int)((*diffs++ * 1000 + half_total) / total_change); + } + + /* return the total in case the caller wants to use it */ + return(total_change); +} + +/* + * errmsg(errnum) - return an error message string appropriate to the + * error number "errnum". This is a substitute for the System V + * function "strerror" with one important difference: the string + * returned by this function does NOT end in a newline! + * N.B.: there appears to be no reliable way to determine if + * "strerror" exists at compile time, so I make do by providing + * something of similar functionality. + */ + +/* externs referenced by errmsg */ + +extern char *sys_errlist[]; +extern int sys_nerr; + +char *errmsg(errnum) + +int errnum; + +{ + if (errnum > 0 && errnum < sys_nerr) + { + return(sys_errlist[errnum]); + } + return("No error"); +} + +/* format_time(seconds) - format number of seconds into a suitable + * display that will fit within 6 characters. Note that this + * routine builds its string in a static area. If it needs + * to be called more than once without overwriting previous data, + * then we will need to adopt a technique similar to the + * one used for format_k. + */ + +/* Explanation: + We want to keep the output within 6 characters. For low values we use + the format mm:ss. For values that exceed 999:59, we switch to a format + that displays hours and fractions: hhh.tH. For values that exceed + 999.9, we use hhhh.t and drop the "H" designator. For values that + exceed 9999.9, we use "???". + */ + +char *format_time(seconds) + +long seconds; + +{ + register int value; + register int digit; + register char *ptr; + static char result[10]; + + /* sanity protection */ + if (seconds < 0 || seconds > (99999l * 360l)) + { + strcpy(result, " ???"); + } + else if (seconds >= (1000l * 60l)) + { + /* alternate (slow) method displaying hours and tenths */ + sprintf(result, "%5.1fH", (double)seconds / (double)(60l * 60l)); + + /* It is possible that the sprintf took more than 6 characters. + If so, then the "H" appears as result[6]. If not, then there + is a \0 in result[6]. Either way, it is safe to step on. + */ + result[6] = '\0'; + } + else + { + /* standard method produces MMM:SS */ + /* we avoid printf as must as possible to make this quick */ + sprintf(result, "%3d:%02d", seconds / 60l, seconds % 60l); + } + return(result); +} + +/* + * format_k(amt) - format a kilobyte memory value, returning a string + * suitable for display. Returns a pointer to a static + * area that changes each call. "amt" is converted to a + * string with a trailing "K". If "amt" is 10000 or greater, + * then it is formatted as megabytes (rounded) with a + * trailing "M". + */ + +/* + * Compromise time. We need to return a string, but we don't want the + * caller to have to worry about freeing a dynamically allocated string. + * Unfortunately, we can't just return a pointer to a static area as one + * of the common uses of this function is in a large call to sprintf where + * it might get invoked several times. Our compromise is to maintain an + * array of strings and cycle thru them with each invocation. We make the + * array large enough to handle the above mentioned case. The constant + * NUM_STRINGS defines the number of strings in this array: we can tolerate + * up to NUM_STRINGS calls before we start overwriting old information. + * Keeping NUM_STRINGS a power of two will allow an intelligent optimizer + * to convert the modulo operation into something quicker. What a hack! + */ + +#define NUM_STRINGS 8 + +char *format_k(amt) + +int amt; + +{ + static char retarray[NUM_STRINGS][16]; + static int index = 0; + register char *p; + register char *ret; + register char tag = 'K'; + + p = ret = retarray[index]; + index = (index + 1) % NUM_STRINGS; + + if (amt >= 10000) + { + amt = (amt + 512) / 1024; + tag = 'M'; + if (amt >= 10000) + { + amt = (amt + 512) / 1024; + tag = 'G'; + } + } + + p = strecpy(p, itoa(amt)); + *p++ = tag; + *p = '\0'; + + return(ret); +} diff --git a/contrib/top/utils.h b/contrib/top/utils.h new file mode 100644 index 0000000..628a0be --- /dev/null +++ b/contrib/top/utils.h @@ -0,0 +1,23 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* prototypes for functions found in utils.c */ + +int atoiwi(); +char *itoa(); +char *itoa7(); +int digits(); +char *strecpy(); +char **argparse(); +long percentages(); +char *errmsg(); +char *format_time(); +char *format_k(); diff --git a/contrib/top/version.c b/contrib/top/version.c new file mode 100644 index 0000000..5f360fd --- /dev/null +++ b/contrib/top/version.c @@ -0,0 +1,25 @@ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +#include "top.h" +#include "patchlevel.h" + +static char version[16]; + +char *version_string() + +{ + sprintf(version, "%d.%d", VERSION, PATCHLEVEL); +#ifdef BETA + strcat(version, BETA); +#endif + return(version); +} -- cgit v1.1