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* Implementation of linux_rt_sigaction and linux_rt_sigprocmask syscalls. Bothmarcel1999-08-141-75/+216
| | | | | | | | | | functions use the new sigset_t and sigaction_t which allows support for more than 32 signals. Only the lower 32 signals are supported for now. linux_rt_sigaction, linux_sigaction and linux_signal use linux_do_sigaction to do the actual work. That way unnecessary redundancy is avoided. The same has been done for linux_rt_sigprocmask and linux_sigprocmask. They call linux_do_sigprocmask to do the actual work.
* Rename struct members sa_siginfo. POSIX reserves identifiers startingcracauer1999-07-061-17/+17
| | | | | | | with sa_ when <signal.h> is included. They would conflict with the upcoming SA_SIGINFO implementation. Reviewed by: BDE
* Fix up a few easy 'assignment used as truth value' and 'suggest parenspeter1999-05-061-8/+15
| | | | | around && within ||' type warnings. I'm pretty sure I have not masked any problems here, I've committed real problem fixes seperately.
* Kill(pid, 0) normally returns 0 on both FreeBSD and Redhat after havingsos1998-12-211-2/+2
| | | | | | | | | performed all sorts of sanity checks. The FreeBSD linux emulator returns EINVAL in such a case. Allowing signal 0 to be passed to kill will result in compatible behaviour. PR: 9082 Submitted by: Marcel Moolenaar <marcel@scc.nl>
* Fix a couple of out-of-bounds array references in mapping betweenjdp1998-10-111-4/+9
| | | | | | Linux and FreeBSD signal numbers. Also, check signal numbers passed in from application programs for validity. Without these checks, it is trivial to panic the system from a Linux program.
* Oops, the previous fix confused Linux's sigset_t with a pointer type.bde1998-08-151-5/+5
| | | | | | It can be integral or a struct in POSIX, so it is difficult to print, but it is actually declared as unsigned long. Assume that it is unsigned integral.
* Fixed print format errors.bde1998-07-291-7/+9
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* Move the "retval" (3rd) parameter from all syscall functions and putphk1997-11-061-20/+19
| | | | | | | | | | | | it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
* Removed unused #includes.bde1997-07-201-3/+1
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* Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notpeter1997-02-221-1/+1
| | | | ready for it yet.
* Make the long-awaited change from $Id$ to $FreeBSD$jkh1997-01-141-1/+1
| | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
* update linux_times() and linux_utime() emulation,peter1996-03-041-3/+6
| | | | | fix sigsuspend() (actually back out my recent change there) and regen the syscall tables..
* Minor touch-up... make two functions static, and add missing $Id$peter1996-03-021-3/+3
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* Mega-commit for Linux emulator update.. This has been stress tested underpeter1996-03-021-80/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up.
* Clean up some warnings by using the generated structures in <sys/sysproto.h>peter1995-12-151-9/+11
| | | | | for passing to the bsd system calls, rather than inveninting our own equivalent structures.
* Completed function declarations and added prototypes.bde1995-11-221-3/+3
| | | | | | Removed some unnecessary #includes. Fixed warnings about nested externs.
* First incarnation of our Linux emulator or rather compatibility code.sos1995-06-251-0/+259
This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
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