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* MFC r283441:dchagin2016-01-091-0/+1
| | | | | | | | | | | Implement epoll family system calls. This is a tiny wrapper around kqueue() to implement epoll subset of functionality. The kqueue user data are 32bit on i386 which is not enough for epoll user data, so we keep user data in the proc emuldata. Initial patch developed by rdivacky@ in 2007, then extended by Yuri Victorovich @ r255672 and finished by me in collaboration with mjg@ and jillies@.
* MFC r283427:dchagin2016-01-091-0/+2
| | | | | Where possible we will use M_LINUX malloc(9) type. Move M_FUTEX defines to the linux_common.ko.
* MFC r283421:dchagin2016-01-091-101/+11
| | | | | | | | | | | | | | | | | | | Introduce a new module linux_common.ko which is intended for the following primary purposes: 1. Remove the dependency of linsysfs and linprocfs modules from linux.ko, which will be architecture specific on amd64. 2. Incorporate into linux_common.ko general code for platforms on which we'll support two Linuxulator modules (for both instruction set - 32 & 64 bit). 3. Move malloc(9) declaration to linux_common.ko, to enable getting memory usage statistics properly. Currently linux_common.ko incorporates a code from linux_mib.c and linux_util.c and linprocfs, linsysfs and linux kernel modules depend on linux_common.ko. Temporarily remove dtrace garbage from linux_mib.c and linux_util.c
* - >500 static DTrace probes for the linuxulatornetchild2012-05-051-16/+106
| | | | | | | | | | | | | | | | | | - DTrace scripts to check for errors, performance, ... they serve mostly as examples of what you can do with the static probe;s with moderate load the scripts may be overwhelmed, excessive lock-tracing may influence program behavior (see the last design decission) Design decissions: - use "linuxulator" as the provider for the native bitsize; add the bitsize for the non-native emulation (e.g. "linuxuator32" on amd64) - Add probes only for locks which are acquired in one function and released in another function. Locks which are aquired and released in the same function should be easy to pair in the code, inter-function locking is more easy to verify in DTrace. - Probes for locks should be fired after locking and before releasing to prevent races (to provide data/function stability in DTrace, see the man-page of "dtrace -v ..." and the corresponding DTrace docs).
* Remove direct access to si_name.ed2012-02-101-1/+1
| | | | | | | | Code should just use the devtoname() function to obtain the name of a character device. Also add const keywords to pieces of code that need it to build properly. MFC after: 2 weeks
* Retire the MALLOC and FREE macros. They are an abomination unto style(9).des2008-10-231-6/+6
| | | | MFC after: 3 months
* Push down the major/minor conversion for pts/%u to improve consistency.ed2008-06-021-0/+16
| | | | | | | | | | | | | | | | | | In the mpsafetty branch, Linux sshd seems to work properly inside a jail. Some small modifications had to be made to the Linux compatibility layer. The Linux PTY routines always expect the device major number to be 136 or higher. Our code always set the major/minor number pair to 136:0. This makes routines like ttyname() and ptsname() fail, because we'll end up having ambiguous device numbers. The conversion was not performed on all *stat() routines, which meant in some cases the numbers didn't get transformed. By pushing the conversion into linux_driver_get_major_minor(), the transformation will take place on all calls. Approved by: philip (mentor), rdivacky
* Implement the linux syscallskib2008-04-081-3/+4
| | | | | | | | | openat, mkdirat, mknodat, fchownat, futimesat, fstatat, unlinkat, renameat, linkat, symlinkat, readlinkat, fchmodat, faccessat. Submitted by: rdivacky Sponsored by: Google Summer of Code 2007 Tested by: pho
* Add the support for the AT_FDCWD and fd-relative name lookups to thekib2008-03-311-0/+1
| | | | | | | | | namei(9). Based on the submission by rdivacky, sponsored by Google Summer of Code 2007 Reviewed by: rwatson, rdivacky Tested by: pho
* Partial MFp4 of 114977:netchild2007-02-241-5/+4
| | | | | | Whitespace commit: Fix grammar, spelling and punctuation. Submitted by: "Scot Hetzel" <swhetzel@gmail.com>
* Add the linux 2.6.x stuff (not used by default!):netchild2006-08-151-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - TLS - complete - pid/tid mangling - complete - thread area - complete - futexes - complete with issues - clone() extension - complete with some possible minor issues - mq*/timer*/clock* stuff - complete but untested and the mq* stuff is disabled when not build as part of the kernel with native FreeBSD mq* support (module support for this will come later) Tested with: - linux-firefox - works, tested - linux-opera - works, tested - linux-realplay - doesnt work, issue with futexes - linux-skype - doesnt work, issue with futexes - linux-rt2-demo - works, tested - linux-acroread - doesnt work, unknown reason (coredump) and sometimes issue with futexes - various unix utilities in linux-base-gentoo3 and linux-base-fc4: everything tried worked On amd64 not everything is supported like on i386, the catchup is planned for later when the remaining bugs in the new functions are fixed. To test this new stuff, you have to run sysctl compat.linux.osrelease=2.6.16 to switch back use sysctl compat.linux.osrelease=2.4.2 Don't switch while running a linux program, strange things may or may not happen. Sponsored by: Google SoC 2006 Submitted by: rdivacky Some suggestions/help by: jhb, kib, manu@NetBSD.org, netchild
* Enhance the Linux emulation layer to make MegaRAID SAS managements tool happy.ambrisko2006-05-051-0/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add back in a scheme to emulate old type major/minor numbers via hooks into stat, linprocfs to return major/minors that Linux app's expect. Currently only /dev/null is always registered. Drivers can register via the Linux type shim similar to the ioctl shim but by using linux_device_register_handler/linux_device_unregister_handler functions. The structure is: struct linux_device_handler { char *bsd_driver_name; char *linux_driver_name; char *bsd_device_name; char *linux_device_name; int linux_major; int linux_minor; int linux_char_device; }; Linprocfs uses this to display the major number of the driver. The soon to be available linsysfs will use it to fill in the driver name. Linux_stat uses it to translate the major/minor into Linux type values. Note major numbers are dynamically assigned via passing in a -1 for the major number so we don't need to keep track of them. This is somewhat needed due to us switching to our devfs. MegaCli will not run until I add in the linsysfs and mfi Linux compat changes. Sponsored by: IronPort Systems
* Remove linux_emul_find() and the CHECKALT*() macros as they are no longerjhb2005-03-011-33/+0
| | | | used.
* Make linux_emul_convpath() a simple wrapper for kern_alternate_path().jhb2005-02-071-98/+3
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* Start each of the license/copyright comments with /*-imp2005-01-051-1/+1
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* Include <sys/mutex.h> and its prerequisite <sys/lock.h> instead ofbde2004-06-231-2/+4
| | | | | | | depending on namespace pollution in <sys/vnode.h> for the definition of GIANT_REQUIRED. Sorted includes.
* Mark linux_emul_convpath() as GIANT_REQUIRED.rwatson2004-06-221-0/+2
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* VOP_GETATTR() wants the vnode passed to it to be locked. Insteadtruckman2004-01-141-13/+1
| | | | | | | | of adding the code to lock and unlock the vnodes and taking care to avoid deadlock, simplify linux_emul_convpath() by comparing the vnode pointers directly instead of comparing their va_fsid and va_fileid attributes. This allows the removal of the calls to VOP_GETATTR().
* Use __FBSDID().obrien2003-06-101-1/+3
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* Back out M_* changes, per decision of the TRB.imp2003-02-191-1/+1
| | | | Approved by: trb
* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.alfred2003-01-211-1/+1
| | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
* Add function linux_msg() for regulating output from the linux emulationalfred2003-01-021-0/+16
| | | | | | | | | | | code, make the emulator use it. Rename unsupported_msg() to unimplemented_syscall(). Rename some arguments for clarity Fixup grammar. Requested by: bde
* Add a new function linux_emul_convpath(), which is a version ofiedowse2002-09-011-32/+48
| | | | | | | | linux_emul_find() that does not use stack gap storage but instead always returns the resulting path in a malloc'd kernel buffer. Implement linux_emul_find() in terms of this function. Also add LCONVPATH* macros that wrap linux_emul_convpath in the same way that the CHECKALT* macros wrap linux_emul_find().
* Simple p_ucred -> td_ucred changes to start using the per-thread ucredjhb2002-02-271-2/+2
| | | | reference.
* Eliminate the prefix parameter to linux_emul_find(), which was alwaysdes2001-10-271-3/+3
| | | | | | | | linux_emul_path anyway. Linux_emul_find() has interesting bugs in its prefix handling (which luckily are not currently exploitable); this commit is preliminary to an attempt at cleaning it up. Approved by: marcel
* KSE Milestone 2julian2001-09-121-7/+7
| | | | | | | | | | | | | | Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
* Fix typo: seperate -> separate.asmodai2001-02-061-1/+1
| | | | Seperate does not exist in the english language.
* Back out proc locking to protect p_ucred for obtaining additionaljhb2001-01-271-10/+3
| | | | references along with the actual obtaining of additional references.
* Lock access to proc members.jhb2000-12-151-3/+10
| | | | Glanced over by: marcel
* Update include directives.marcel2000-08-221-2/+1
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* Add bounds checking to stackgap_alloc. Previously it was possiblemarcel2000-07-231-1/+4
| | | | | | | | | | | to construct a path that was long enough (ie longer than SPARE_USRSPACE bytes) and trash the stack. Note that SPARE_USRSPACE is much smaller than MAXPATHLEN so that the Linuxulator will now return ENAMETOOLONG even if the path is smaller than MAXPATHLEN. PR: 12749
* Remove unneeded #include <vm/vm_zone.h>phk2000-04-301-1/+0
| | | | Generated by: src/tools/tools/kerninclude
* Introduce NDFREE (and remove VOP_ABORTOP)eivind1999-12-151-1/+9
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* $Id$ -> $FreeBSD$peter1999-08-281-1/+1
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* Removed unused #includes.bde1997-07-201-5/+1
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* Don't include <sys/ioctl.h> in the kernel. Stage 1: don't includebde1997-03-241-2/+1
| | | | | it when it is not used. In most cases, the reasons for including it went away when the special ioctl headers became self-sufficient.
* 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.
* Changed type of ni_dirp in `struct namei' from caddr_t to `const char *'bde1996-09-031-4/+3
| | | | | | | so that the compiler can see that it is OK to use const strings in NDINIT(). Some emulators want to use paths of the form "/compat/foo". Removed the casts that hid the non-problem. Didn't fix the missing consts in syscalls.master that hid the non-problem.
* Fix memory leak bug in the path parsing code which never released it'snate1996-08-051-6/+10
| | | | | | | | | buffer in certain error conditions. Sync up the code to that in NetBSD where applicable. Reviewed by: Gary Jennejohn <garyj@munich.netsurf.de> Submitted by: Michael Smith <msmith@atrad.adelaide.edu.au> Obtained from: NetBSD sources
* Mega-commit for Linux emulator update.. This has been stress tested underpeter1996-03-021-0/+179
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.
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