en Copyright 2025 Java http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#e9ac41698b2f322d55ccf9da50a3596edb2c1800 Remove residual blank line at start of MakefileThis is a residual of the $FreeBSD$ removal.MFC After: 3 days (though I'll just run the command on the branches)Sponsored by: Netflix List of files: /src/tools/regression/posixsem/Makefile Mon, 15 Jul 2024 04:46:32 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf Remove $FreeBSD$: one-line sh patternRemove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ List of files: /src/tools/regression/posixsem/Makefile Wed, 16 Aug 2023 17:55:03 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#e9ac41698b2f322d55ccf9da50a3596edb2c1800 Remove residual blank line at start of MakefileThis is a residual of the $FreeBSD$ removal.MFC After: 3 days (though I'll just run the command on the branches)Sponsored by: Netflix List of files: /src/tools/regression/posixsem/Makefile Mon, 15 Jul 2024 04:46:32 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf Remove $FreeBSD$: one-line sh patternRemove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ List of files: /src/tools/regression/posixsem/Makefile Wed, 16 Aug 2023 17:55:03 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#b626f5a73a48f44a31a200291b141e1da408a2ff MFH r289384-r293170Sponsored by: The FreeBSD Foundation List of files: /src/tools/regression/posixsem/Makefile Mon, 04 Jan 2016 19:19:48 +0000 Glen Barber <gjb@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#6c43c26fe0c128dfafbb1b2207912494493d2dd7 Catch up with head. List of files: /src/tools/regression/posixsem/Makefile Fri, 04 Dec 2015 19:32:51 +0000 Navdeep Parhar <np@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#eacae6dc66aa881c102f11e2003174eea7e8af74 Fix LDADD/DPADD that should be LIBADD.Sponsored by: EMC / Isilon Storage Division List of files: /src/tools/regression/posixsem/Makefile Fri, 04 Dec 2015 03:17:47 +0000 Bryan Drewery <bdrewery@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#6cec9cad762b6476313fb1f8e931a1647822db6b MFC @ r266724An SVM update will follow this. List of files: /src/tools/regression/posixsem/Makefile Tue, 03 Jun 2014 02:34:21 +0000 Peter Grehan <grehan@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#3b8f08459569bf0faa21473e5cec2491e95c9349 Merge head List of files: /src/tools/regression/posixsem/Makefile Mon, 28 Apr 2014 07:50:45 +0000 Simon J. Gerraty <sjg@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#84e51a1b679bececc13cbe3cd3cb9b7d461b9fe7 IFC @264767 List of files: /src/tools/regression/posixsem/Makefile Wed, 23 Apr 2014 21:52:43 +0000 Alan Somers <asomers@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#3bdf775801b218aa5a89564839405b122f4b233e NO_MAN= has been deprecated in favor of MAN= for some time, go aheadand finish the job. ncurses is now the only Makefile in the tree thatuses it since it wasn't a simple mechanical change, and will beaddressed in a future commit. List of files: /src/tools/regression/posixsem/Makefile Sun, 13 Apr 2014 05:21:56 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#b626f5a73a48f44a31a200291b141e1da408a2ff MFH r289384-r293170Sponsored by: The FreeBSD Foundation List of files: /src/tools/regression/posixsem/Makefile Mon, 04 Jan 2016 19:19:48 +0000 Glen Barber <gjb@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#6c43c26fe0c128dfafbb1b2207912494493d2dd7 Catch up with head. List of files: /src/tools/regression/posixsem/Makefile Fri, 04 Dec 2015 19:32:51 +0000 Navdeep Parhar <np@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#eacae6dc66aa881c102f11e2003174eea7e8af74 Fix LDADD/DPADD that should be LIBADD.Sponsored by: EMC / Isilon Storage Division List of files: /src/tools/regression/posixsem/Makefile Fri, 04 Dec 2015 03:17:47 +0000 Bryan Drewery <bdrewery@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#6cec9cad762b6476313fb1f8e931a1647822db6b MFC @ r266724An SVM update will follow this. List of files: /src/tools/regression/posixsem/Makefile Tue, 03 Jun 2014 02:34:21 +0000 Peter Grehan <grehan@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#3b8f08459569bf0faa21473e5cec2491e95c9349 Merge head List of files: /src/tools/regression/posixsem/Makefile Mon, 28 Apr 2014 07:50:45 +0000 Simon J. Gerraty <sjg@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#84e51a1b679bececc13cbe3cd3cb9b7d461b9fe7 IFC @264767 List of files: /src/tools/regression/posixsem/Makefile Wed, 23 Apr 2014 21:52:43 +0000 Alan Somers <asomers@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#3bdf775801b218aa5a89564839405b122f4b233e NO_MAN= has been deprecated in favor of MAN= for some time, go aheadand finish the job. ncurses is now the only Makefile in the tree thatuses it since it wasn't a simple mechanical change, and will beaddressed in a future commit. List of files: /src/tools/regression/posixsem/Makefile Sun, 13 Apr 2014 05:21:56 +0000 Warner Losh <imp@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#6bc1e9cd840f8e007a79b9ddf7cde686a050a8cf Rework the lifetime management of the kernel implementation of POSIXsemaphores. Specifically, semaphores are now represented as new filedescriptor type that is set to close on exec. This removes the need forall of the manual process reference counting (and fork, exec, and exitevent handlers) as the normal file descriptor operations handle all ofthat for us nicely. It is also suggested as one possible implementationin the spec and at least one other OS (OS X) uses this approach.Some bugs that were fixed as a result include:- References to a named semaphore whose name is removed still work after the sem_unlink() operation. Prior to this patch, if a semaphore's name was removed, valid handles from sem_open() would get EINVAL errors from sem_getvalue(), sem_post(), etc. This fixes that.- Unnamed semaphores created with sem_init() were not cleaned up when a process exited or exec'd. They were only cleaned up if the process did an explicit sem_destroy(). This could result in a leak of semaphore objects that could never be cleaned up.- On the other hand, if another process guessed the id (kernel pointer to 'struct ksem' of an unnamed semaphore (created via sem_init)) and had write access to the semaphore based on UID/GID checks, then that other process could manipulate the semaphore via sem_destroy(), sem_post(), sem_wait(), etc.- As part of the permission check (UID/GID), the umask of the proces creating the semaphore was not honored. Thus if your umask denied group read/write access but the explicit mode in the sem_init() call allowed it, the semaphore would be readable/writable by other users in the same group, for example. This includes access via the previous bug.- If the module refused to unload because there were active semaphores, then it might have deregistered one or more of the semaphore system calls before it noticed that there was a problem. I'm not sure if this actually happened as the order that modules are discovered by the kernel linker depends on how the actual .ko file is linked. One can make the order deterministic by using a single module with a mod_event handler that explicitly registers syscalls (and deregisters during unload after any checks). This also fixes a race where even if the sem_module unloaded first it would have destroyed locks that the syscalls might be trying to access if they are still executing when they are unloaded. XXX: By the way, deregistering system calls doesn't do any blocking to drain any threads from the calls.- Some minor fixes to errno values on error. For example, sem_init() isn't documented to return ENFILE or EMFILE if we run out of semaphores the way that sem_open() can. Instead, it should return ENOSPC in that case.Other changes:- Kernel semaphores now use a hash table to manage the namespace of named semaphores nearly in a similar fashion to the POSIX shared memory object file descriptors. Kernel semaphores can now also have names longer than 14 chars (up to MAXPATHLEN) and can include subdirectories in their pathname.- The UID/GID permission checks for access to a named semaphore are now done via vaccess() rather than a home-rolled set of checks.- Now that kernel semaphores have an associated file object, the various MAC checks for POSIX semaphores accept both a file credential and an active credential. There is also a new posixsem_check_stat() since it is possible to fstat() a semaphore file descriptor.- A small set of regression tests (using the ksem API directly) is present in src/tools/regression/posixsem.Reported by: kris (1)Tested by: krisReviewed by: rwatson (lightly)MFC after: 1 month List of files: /src/tools/regression/posixsem/Makefile Fri, 27 Jun 2008 05:39:04 +0000 John Baldwin <jhb@FreeBSD.org> http://opengrok.net:8080/history/src/tools/regression/posixsem/Makefile#e9ac41698b2f322d55ccf9da50a3596edb2c1800 Remove residual blank line at start of MakefileThis is a residual of the $FreeBSD$ removal.MFC After: 3 days (though I'll just run the command on the branches)Sponsored by: Netflix List of files: /src/tools/regression/posixsem/Makefile Mon, 15 Jul 2024 04:46:32 +0000 Warner Losh <imp@FreeBSD.org>