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* Reassign copyright statements on several files from AdvancedJohn Baldwin2015-04-231-1/+1
| | | | | | | | | | Computing Technologies LLC to Hudson River Trading LLC. Approved by: Hudson River Trading LLC (who owns ACT LLC) MFC after: 1 week Notes: svn path=/head/; revision=281887
* The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), andKonstantin Belousov2015-04-182-12/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | pwrite(2) syscalls are wrapped to provide compatibility with pre-7.x kernels which required padding before the off_t parameter. The fcntl(2) contains compatibility code to handle kernels before the struct flock was changed during the 8.x CURRENT development. The shims were reasonable to allow easier revert to the older kernel at that time. Now, two or three major releases later, shims do not serve any purpose. Such old kernels cannot handle current libc, so revert the compatibility code. Make padded syscalls support conditional under the COMPAT6 config option. For COMPAT32, the syscalls were under COMPAT6 already. Remove WITHOUT_SYSCALL_COMPAT build option, which only purpose was to (partially) disable the removed shims. Reviewed by: jhb, imp (previous versions) Discussed with: peter Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=281714
* Make wait6(2), waitid(3) and ppoll(2) cancellation points. TheKonstantin Belousov2015-04-181-0/+8
| | | | | | | | | | | | waitid() function is required to be cancellable by the standard. The wait6() and ppoll() follow the other syscalls in their groups. Reviewed by: jhb, jilles (previous versions) Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=281712
* Correctly handle __fcntl_compat symbol for the !SYSCALL_COMPAT case.Konstantin Belousov2015-04-011-0/+9
| | | | | | | | | | | | Both .weak and .alias assembler directives only work when assembling the file which defines the symbol. Reported and tested by: andrew Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=280959
* Make kevent(2) a cancellation point.Konstantin Belousov2015-03-291-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | Note that to cancel blocked kevent(2) call, changelist must be empty, since we cannot cancel a call which already made changes to the process state. And in reverse, call which only makes changes to the kqueue state, without waiting for an event, is not cancellable. This makes a natural usage model to migrate kqueue loop to support cancellation, where existing single kevent(2) call must be split into two: first uncancellable update of kqueue, then cancellable wait for events. Note that this is ABI-incompatible change, but it is believed that there is no cancel-safe code that relies on kevent(2) not being a cancellation point. Option to preserve the ABI would be to keep kevent(2) as is, but add new call with flags to specify cancellation behaviour, which only value seems to add complications. Suggested and reviewed by: jilles Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Notes: svn path=/head/; revision=280818
* Restore the extern qualifier on __cleanup.Konstantin Belousov2015-02-171-1/+1
| | | | | | | | Sponsored by: The FreeBSD Foundation MFC after: 3 days Notes: svn path=/head/; revision=278889
* Properly interpose libc spinlocks, was missed in r276630. InKonstantin Belousov2015-02-141-0/+5
| | | | | | | | | | | particular, stdio locking was affected. Reported and tested by: "Matthew D. Fuller" <fullermd@over-yonder.net> Sponsored by: The FreeBSD Foundation MFC after: 3 days Notes: svn path=/head/; revision=278751
* Add futimens and utimensat system calls.Jilles Tjoelker2015-01-231-0/+4
| | | | | | | | | | | | | | | | | The core kernel part is patch file utimes.2008.4.diff from pluknet@FreeBSD.org. I updated the code for API changes, added the manual page and added compatibility code for old kernels. There is also audit and Capsicum support. A new UTIME_* constant might allow setting birthtimes in future. Differential Revision: https://reviews.freebsd.org/D1426 Submitted by: pluknet (partially) Reviewed by: delphij, pluknet, rwatson Relnotes: yes Notes: svn path=/head/; revision=277610
* Reduce the size of the interposing table and amount ofKonstantin Belousov2015-01-111-17/+2
| | | | | | | | | | | | | | | | | | | | cancellation-handling code in the libthr. Translate some syscalls into their more generic counterpart, and remove translated syscalls from the table. List of the affected syscalls: creat, open -> openat raise -> thr_kill sleep, usleep -> nanosleep pause -> sigsuspend wait, wait3, waitpid -> wait4 Suggested and reviewed by: jilles (previous version) Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=277032
* Avoid calling internal libc function through PLT or accessing dataKonstantin Belousov2015-01-051-2/+2
| | | | | | | | | | | | though GOT, by staticizing and hiding. Add setter for __error_selector to hide it as well. Suggested and reviewed by: jilles Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=276681
* Fix known issues which blow up the process after dlopen("libthr.so")Konstantin Belousov2015-01-031-20/+140
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (or loading a dso linked to libthr.so into process which was not linked against threading library). - Remove libthr interposers of the libc functions, including __error(). Instead, functions calls are indirected through the interposing table, similar to how pthread stubs in libc are already done. Libc by default points either to syscall trampolines or to existing libc implementations. On libthr load, libthr rewrites the pointers to the cancellable implementations already in libthr. The interposition table is separate from pthreads stubs indirection table to not pull pthreads stubs into static binaries. - Postpone the malloc(3) internal mutexes initialization until libthr is loaded. This avoids recursion between calloc(3) and static pthread_mutex_t initialization. - Reinstall signal handlers with wrapper on libthr load. The _rtld_is_dlopened(3) is used to avoid useless calls to sigaction(2) when libthr is statically referenced from the main binary. In the process, fix openat(2), swapcontext(2) and setcontext(2) interposing. The libc symbols were exported at different versions than libthr interposers. Export both libc and libthr versions from libc now, with default set to the higher version from libthr. Remove unused and disconnected swapcontext(3) userspace implementation from libc/gen. No objections from: deischen Tested by: pho, antoine (exp-run) (previous versions) Sponsored by: The FreeBSD Foundation MFC after: 1 week Notes: svn path=/head/; revision=276630
* Revert r274772: it is not valid on MIPSEd Maste2014-11-251-1/+1
| | | | | | | Reported by: sbruno Notes: svn path=/head/; revision=275004
* Use canonical __PIC__ flagEd Maste2014-11-211-1/+1
| | | | | | | | | | | It is automatically set when -fPIC is passed to the compiler. Reviewed by: dim, kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D1179 Notes: svn path=/head/; revision=274772
* Update our stub resolver to final version of libbind.Hajimu UMEMOTO2014-08-123-12/+14
|\ | | | | | | | | | | | | Obtained from: ISC Notes: svn path=/head/; revision=269867
| * We don't use these files.Hajimu UMEMOTO2014-08-105-400/+0
| | | | | | | | Notes: svn path=/vendor/resolver/dist/; revision=269781
| * Bring final version of libbind:Pedro F. Giffuni2014-08-057-12/+413
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From http://www.isc.org/downloads/libbind/ The libbind functions have been separated from the BIND suite as of BIND 9.6.0. Originally from older versions of BIND, they have been continually maintained and improved but not installed by default with BIND 9. This standard resolver library contains the same historical functions and headers included with many Unix operating systems. In fact, most implementations are based on the same original code. At present, NetBSD maintains libbind code, now known as "netresolv". Notes: svn path=/vendor/resolver/dist/; revision=269610
| * Import the resolver part of BIND 9.4.3.vendor/resolver/9.4.3Hajimu UMEMOTO2008-12-141-1/+3
| | | | | | | | | | Notes: svn path=/vendor/resolver/dist/; revision=186083 svn path=/vendor/resolver/9.4.3/; revision=186084; tag=vendor/resolver/9.4.3
| * Vendor import of BIND 9.4.1vendor/resolver/9.4.1Hajimu UMEMOTO2007-06-031-2/+7
| | | | | | | | | | Notes: svn path=/vendor/resolver/dist/; revision=170245 svn path=/vendor/resolver/9.4.1/; revision=170246; tag=vendor/resolver/9.4.1
* | Add an extra void* cast to work around a bug in FreeBSD-gcc inheritedDavid Chisnall2014-04-031-1/+1
| | | | | | | | | | | | | | from Apple. Notes: svn path=/head/; revision=264069
* | Add support for some block functions that come from OS X. These areDavid Chisnall2014-04-021-0/+63
| | | | | | | | | | | | | | | | | | | | intended to build with any C compiler. Reviewed by: pfg MFC after: 3 weeks Notes: svn path=/head/; revision=264042
* | libc/resolv: Use poll() instead of kqueue().Jilles Tjoelker2014-01-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | The resolver in libc creates a kqueue for watching a single file descriptor. This can be done using poll() which should be lighter on the kernel and reduce possible problems with rlimits (file descriptors, kqueues). Reviewed by: jhb Notes: svn path=/head/; revision=260652
* | Change the cap_rights_t type from uint64_t to a structure that we can extendPawel Jakub Dawidek2013-09-051-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in the future in a backward compatible (API and ABI) way. The cap_rights_t represents capability rights. We used to use one bit to represent one right, but we are running out of spare bits. Currently the new structure provides place for 114 rights (so 50 more than the previous cap_rights_t), but it is possible to grow the structure to hold at least 285 rights, although we can make it even larger if 285 rights won't be enough. The structure definition looks like this: struct cap_rights { uint64_t cr_rights[CAP_RIGHTS_VERSION + 2]; }; The initial CAP_RIGHTS_VERSION is 0. The top two bits in the first element of the cr_rights[] array contain total number of elements in the array - 2. This means if those two bits are equal to 0, we have 2 array elements. The top two bits in all remaining array elements should be 0. The next five bits in all array elements contain array index. Only one bit is used and bit position in this five-bits range defines array index. This means there can be at most five array elements in the future. To define new right the CAPRIGHT() macro must be used. The macro takes two arguments - an array index and a bit to set, eg. #define CAP_PDKILL CAPRIGHT(1, 0x0000000000000800ULL) We still support aliases that combine few rights, but the rights have to belong to the same array element, eg: #define CAP_LOOKUP CAPRIGHT(0, 0x0000000000000400ULL) #define CAP_FCHMOD CAPRIGHT(0, 0x0000000000002000ULL) #define CAP_FCHMODAT (CAP_FCHMOD | CAP_LOOKUP) There is new API to manage the new cap_rights_t structure: cap_rights_t *cap_rights_init(cap_rights_t *rights, ...); void cap_rights_set(cap_rights_t *rights, ...); void cap_rights_clear(cap_rights_t *rights, ...); bool cap_rights_is_set(const cap_rights_t *rights, ...); bool cap_rights_is_valid(const cap_rights_t *rights); void cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src); void cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src); bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little); Capability rights to the cap_rights_init(), cap_rights_set(), cap_rights_clear() and cap_rights_is_set() functions are provided by separating them with commas, eg: cap_rights_t rights; cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_FSTAT); There is no need to terminate the list of rights, as those functions are actually macros that take care of the termination, eg: #define cap_rights_set(rights, ...) \ __cap_rights_set((rights), __VA_ARGS__, 0ULL) void __cap_rights_set(cap_rights_t *rights, ...); Thanks to using one bit as an array index we can assert in those functions that there are no two rights belonging to different array elements provided together. For example this is illegal and will be detected, because CAP_LOOKUP belongs to element 0 and CAP_PDKILL to element 1: cap_rights_init(&rights, CAP_LOOKUP | CAP_PDKILL); Providing several rights that belongs to the same array's element this way is correct, but is not advised. It should only be used for aliases definition. This commit also breaks compatibility with some existing Capsicum system calls, but I see no other way to do that. This should be fine as Capsicum is still experimental and this change is not going to 9.x. Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=255219
* | libc: Always use our own copy of sys_errlist and sys_nerr (.so only).Jilles Tjoelker2013-08-311-0/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This ensures strerror() and friends continue to work correctly even if a (non-PIE) executable linked against an older libc imports sys_errlist (which causes sys_errlist to refer to the executable's copy with a size fixed when that executable was linked). The executable's use of sys_errlist remains broken because it uses the current value of sys_nerr and may access past the bounds of the array. Different from the message "Using sys_errlist from executables is not ABI-stable" on freebsd-arch, this change does not affect the static library. There seems no reason to prevent overriding the error messages in the static library. Notes: svn path=/head/; revision=255108
* | libc: Access some unexported variables more efficiently (related to stdio).Jilles Tjoelker2013-08-231-2/+2
| | | | | | | | Notes: svn path=/head/; revision=254706
* | Merge Capsicum overhaul:Pawel Jakub Dawidek2013-03-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Capability is no longer separate descriptor type. Now every descriptor has set of its own capability rights. - The cap_new(2) system call is left, but it is no longer documented and should not be used in new code. - The new syscall cap_rights_limit(2) should be used instead of cap_new(2), which limits capability rights of the given descriptor without creating a new one. - The cap_getrights(2) syscall is renamed to cap_rights_get(2). - If CAP_IOCTL capability right is present we can further reduce allowed ioctls list with the new cap_ioctls_limit(2) syscall. List of allowed ioctls can be retrived with cap_ioctls_get(2) syscall. - If CAP_FCNTL capability right is present we can further reduce fcntls that can be used with the new cap_fcntls_limit(2) syscall and retrive them with cap_fcntls_get(2). - To support ioctl and fcntl white-listing the filedesc structure was heavly modified. - The audit subsystem, kdump and procstat tools were updated to recognize new syscalls. - Capability rights were revised and eventhough I tried hard to provide backward API and ABI compatibility there are some incompatible changes that are described in detail below: CAP_CREATE old behaviour: - Allow for openat(2)+O_CREAT. - Allow for linkat(2). - Allow for symlinkat(2). CAP_CREATE new behaviour: - Allow for openat(2)+O_CREAT. Added CAP_LINKAT: - Allow for linkat(2). ABI: Reuses CAP_RMDIR bit. - Allow to be target for renameat(2). Added CAP_SYMLINKAT: - Allow for symlinkat(2). Removed CAP_DELETE. Old behaviour: - Allow for unlinkat(2) when removing non-directory object. - Allow to be source for renameat(2). Removed CAP_RMDIR. Old behaviour: - Allow for unlinkat(2) when removing directory. Added CAP_RENAMEAT: - Required for source directory for the renameat(2) syscall. Added CAP_UNLINKAT (effectively it replaces CAP_DELETE and CAP_RMDIR): - Allow for unlinkat(2) on any object. - Required if target of renameat(2) exists and will be removed by this call. Removed CAP_MAPEXEC. CAP_MMAP old behaviour: - Allow for mmap(2) with any combination of PROT_NONE, PROT_READ and PROT_WRITE. CAP_MMAP new behaviour: - Allow for mmap(2)+PROT_NONE. Added CAP_MMAP_R: - Allow for mmap(PROT_READ). Added CAP_MMAP_W: - Allow for mmap(PROT_WRITE). Added CAP_MMAP_X: - Allow for mmap(PROT_EXEC). Added CAP_MMAP_RW: - Allow for mmap(PROT_READ | PROT_WRITE). Added CAP_MMAP_RX: - Allow for mmap(PROT_READ | PROT_EXEC). Added CAP_MMAP_WX: - Allow for mmap(PROT_WRITE | PROT_EXEC). Added CAP_MMAP_RWX: - Allow for mmap(PROT_READ | PROT_WRITE | PROT_EXEC). Renamed CAP_MKDIR to CAP_MKDIRAT. Renamed CAP_MKFIFO to CAP_MKFIFOAT. Renamed CAP_MKNODE to CAP_MKNODEAT. CAP_READ old behaviour: - Allow pread(2). - Disallow read(2), readv(2) (if there is no CAP_SEEK). CAP_READ new behaviour: - Allow read(2), readv(2). - Disallow pread(2) (CAP_SEEK was also required). CAP_WRITE old behaviour: - Allow pwrite(2). - Disallow write(2), writev(2) (if there is no CAP_SEEK). CAP_WRITE new behaviour: - Allow write(2), writev(2). - Disallow pwrite(2) (CAP_SEEK was also required). Added convinient defines: #define CAP_PREAD (CAP_SEEK | CAP_READ) #define CAP_PWRITE (CAP_SEEK | CAP_WRITE) #define CAP_MMAP_R (CAP_MMAP | CAP_SEEK | CAP_READ) #define CAP_MMAP_W (CAP_MMAP | CAP_SEEK | CAP_WRITE) #define CAP_MMAP_X (CAP_MMAP | CAP_SEEK | 0x0000000000000008ULL) #define CAP_MMAP_RW (CAP_MMAP_R | CAP_MMAP_W) #define CAP_MMAP_RX (CAP_MMAP_R | CAP_MMAP_X) #define CAP_MMAP_WX (CAP_MMAP_W | CAP_MMAP_X) #define CAP_MMAP_RWX (CAP_MMAP_R | CAP_MMAP_W | CAP_MMAP_X) #define CAP_RECV CAP_READ #define CAP_SEND CAP_WRITE #define CAP_SOCK_CLIENT \ (CAP_CONNECT | CAP_GETPEERNAME | CAP_GETSOCKNAME | CAP_GETSOCKOPT | \ CAP_PEELOFF | CAP_RECV | CAP_SEND | CAP_SETSOCKOPT | CAP_SHUTDOWN) #define CAP_SOCK_SERVER \ (CAP_ACCEPT | CAP_BIND | CAP_GETPEERNAME | CAP_GETSOCKNAME | \ CAP_GETSOCKOPT | CAP_LISTEN | CAP_PEELOFF | CAP_RECV | CAP_SEND | \ CAP_SETSOCKOPT | CAP_SHUTDOWN) Added defines for backward API compatibility: #define CAP_MAPEXEC CAP_MMAP_X #define CAP_DELETE CAP_UNLINKAT #define CAP_MKDIR CAP_MKDIRAT #define CAP_RMDIR CAP_UNLINKAT #define CAP_MKFIFO CAP_MKFIFOAT #define CAP_MKNOD CAP_MKNODAT #define CAP_SOCK_ALL (CAP_SOCK_CLIENT | CAP_SOCK_SERVER) Sponsored by: The FreeBSD Foundation Reviewed by: Christoph Mallon <christoph.mallon@gmx.de> Many aspects discussed with: rwatson, benl, jonathan ABI compatibility discussed with: kib Notes: svn path=/head/; revision=247602
* | Implement the waitid() SUSv4 function using wait6() system call.Konstantin Belousov2012-11-132-0/+2
| | | | | | | | | | | | | | | | | | PR: standards/170346 Submitted by: "Jukka A. Ukkonen" <jau@iki.fi> MFC after: 1 month Notes: svn path=/head/; revision=242960
* | Use struct vdso_timehands data to implement fast gettimeofday(2) andKonstantin Belousov2012-06-221-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clock_gettime(2) functions if supported. The speedup seen in microbenchmarks is in range 4x-7x depending on the hardware. Only amd64 and i386 architectures are supported. Libc uses rdtsc and kernel data to calculate current time, if enabled by kernel. Hopefully, this code is going to migrate into vdso in some future. Discussed with: bde Reviewed by: jhb Tested by: flo MFC after: 1 month Notes: svn path=/head/; revision=237434
* | Fix two warnings about self-assignment in libc. These normally onlyDimitry Andric2012-06-061-1/+1
| | | | | | | | | | | | | | | | | | | | trigger with clang, when you either use -save-temps, or ccache. Reported by: Sevan / Venture37 <venture37@gmail.com> MFC after: 3 days Notes: svn path=/head/; revision=236695
* | Take the spinlock around clearing of the fp->_flags in fclose(3), whichKonstantin Belousov2012-04-241-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | indicates the avaliability of FILE, to prevent possible reordering of the writes as seen by other CPUs. Reported by: Fengwei yin <yfw.bsd gmail com> Reviewed by: jhb MFC after: 1 week Notes: svn path=/head/; revision=234657
* | Fetch the aux vector for the static libc, and use the entries toKonstantin Belousov2012-02-171-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | initialize the cache of the system information as it was done for the dynamic libc. This removes several sysctls from the static binary startup. Use the aux vector to fill the single struct dl_phdr_info describing the static binary itself, to implement dl_iterate_phdr(3) for the static binaries. [1] Based on the submission by: John Marino <draco marino st> [1] Tested by: flo (sparc64) MFC after: 2 weeks Notes: svn path=/head/; revision=231868
* | Fix a problem whereby a corrupt DNS record can cause named to crash. [11:06]Colin Percival2011-12-231-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an API for alerting internal libc routines to the presence of "unsafe" paths post-chroot, and use it in ftpd. [11:07] Fix a buffer overflow in telnetd. [11:08] Make pam_ssh ignore unpassphrased keys unless the "nullok" option is specified. [11:09] Add sanity checking of service names in pam_start. [11:10] Approved by: so (cperciva) Approved by: re (bz) Security: FreeBSD-SA-11:06.bind Security: FreeBSD-SA-11:07.chroot Security: FreeBSD-SA-11:08.telnetd Security: FreeBSD-SA-11:09.pam_ssh Security: FreeBSD-SA-11:10.pam Notes: svn path=/head/; revision=228843
* | Introduce a non-portable function pthread_getthreadid_np(3) to retrieveJung-uk Kim2011-02-072-0/+2
| | | | | | | | | | | | | | | | | | | | calling thread's unique integral ID, which is similar to AIX function of the same name. Bump __FreeBSD_version to note its introduction. Reviewed by: kib Notes: svn path=/head/; revision=218414
* | Remove some unneeded spaces from the __sym_compat() macro, since newerDimitry Andric2010-11-111-1/+1
| | | | | | | | | | | | | | | | versions of gas are more fussy about spaces surrounding '@' signs in versioned symbol names. Notes: svn path=/head/; revision=215144
* | Revert revision 214007, I realized that MySQL wants to resolveDavid Xu2010-10-202-4/+0
| | | | | | | | | | | | | | | | | | | | a silly rwlock deadlock problem, the deadlock is caused by writer waiters, if a thread has already locked a reader lock, and wants to acquire another reader lock, it will be blocked by writer waiters, but we had already fixed it years ago. Notes: svn path=/head/; revision=214093
* | Unbreak buildworld by including pthread_rwlockattr_setkind_np andDavid Xu2010-10-182-0/+4
| | | | | | | | | | | | | | pthread_rwlockattr_getkind_np. Notes: svn path=/head/; revision=214015
* | To support stack unwinding for cancellation points, add -fexceptions flagDavid Xu2010-09-251-0/+5
| | | | | | | | | | | | | | | | | | | | for them, two functions _pthread_cancel_enter and _pthread_cancel_leave are added to let thread enter and leave a cancellation point, it also makes it possible that other functions can be cancellation points in libraries without having to be rewritten in libthr. Notes: svn path=/head/; revision=213153
* | On shared object unload, in __cxa_finalize, call and clear all installedKonstantin Belousov2010-08-231-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | atexit and __cxa_atexit handlers that are either installed by unloaded dso, or points to the functions provided by the dso. Use _rtld_addr_phdr to locate segment information from the address of private variable belonging to the dso, supplied by crtstuff.c. Provide utility function __elf_phdr_match_addr to do the match of address against dso executable segment. Call back into libthr from __cxa_finalize using weak __pthread_cxa_finalize symbol to remove any atfork handler which function points into unloaded object. The rtld needs private __pthread_cxa_finalize symbol to not require resolution of the weak undefined symbol at initialization time. This cannot work, since rtld is relocated before sym_zero is set up. Idea by: kan Reviewed by: kan (previous version) MFC after: 3 weeks Notes: svn path=/head/; revision=211706
* | Use aux vector to get values for SSP canary, pagesize, pagesizes array,Konstantin Belousov2010-08-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | number of host CPUs and osreldate. This eliminates the last sysctl(2) calls from the dynamically linked image startup. No objections from: kan Tested by: marius (sparc64) MFC after: 1 month Notes: svn path=/head/; revision=211416
* | The NetBSD Foundation has granted permission to remove clause 3 and 4 fromJoel Dahl2010-03-021-7/+0
| | | | | | | | | | | | | | | | | | their software. Obtained from: NetBSD Notes: svn path=/head/; revision=204588
* | Use umtx to implement process sharable semaphore, to make this work,David Xu2010-01-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | now type sema_t is a structure which can be put in a shared memory area, and multiple processes can operate it concurrently. User can either use mmap(MAP_SHARED) + sem_init(pshared=1) or use sem_open() to initialize a shared semaphore. Named semaphore uses file system and is located in /tmp directory, and its file name is prefixed with 'SEMD', so now it is chroot or jail friendly. In simplist cases, both for named and un-named semaphore, userland code does not have to enter kernel to reduce/increase semaphore's count. The semaphore is designed to be crash-safe, it means even if an application is crashed in the middle of operating semaphore, the semaphore state is still safely recovered by later use, there is no waiter counter maintained by userland code. The main semaphore code is in libc and libthr only has some necessary stubs, this makes it possible that a non-threaded application can use semaphore without linking to thread library. Old semaphore implementation is kept libc to maintain binary compatibility. The kernel ksem API is no longer used in the new implemenation. Discussed on: threads@ Notes: svn path=/head/; revision=201546
* | Revert the previous change to pthread_once() stub in libc. It is actuallyJohn Baldwin2009-11-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | a feature that libstdc++ depends on to simulate the behavior of libc's internal '__isthreaded' variable. One benefit of this is that _libc_once() is now private to _once_stub.c. Requested by: kan Notes: svn path=/head/; revision=199614
* | Add an internal _once() method. This works identical to pthread_once(3)John Baldwin2009-11-201-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with the additional property that it is safe for routines in libc to use in both single-threaded and multi-threaded processes. Multi-threaded processes use the pthread_once() implementation from the threading library while single-threaded processes use a simplified "stub" version internal to libc. The libc stub-version of pthread_once() now also uses the simplified "stub" version as well instead of being a nop. Reviewed by: deischen, Matthew Fleming @ Isilon Suggested by: alc MFC after: 1 week Notes: svn path=/head/; revision=199606
* | Make openat(2) a cancellation point.Jilles Tjoelker2009-10-112-0/+2
| | | | | | | | | | | | | | | | | | | | This is required by POSIX and matches open(2). Reviewed by: kib, jhb MFC after: 1 month Notes: svn path=/head/; revision=197968
* | Change the ABI of some of the structures used by the SYSV IPC API:John Baldwin2009-06-241-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - The uid/cuid members of struct ipc_perm are now uid_t instead of unsigned short. - The gid/cgid members of struct ipc_perm are now gid_t instead of unsigned short. - The mode member of struct ipc_perm is now mode_t instead of unsigned short (this is merely a style bug). - The rather dubious padding fields for ABI compat with SV/I386 have been removed from struct msqid_ds and struct semid_ds. - The shm_segsz member of struct shmid_ds is now a size_t instead of an int. This removes the need for the shm_bsegsz member in struct shmid_kernel and should allow for complete support of SYSV SHM regions >= 2GB. - The shm_nattch member of struct shmid_ds is now an int instead of a short. - The shm_internal member of struct shmid_ds is now gone. The internal VM object pointer for SHM regions has been moved into struct shmid_kernel. - The existing __semctl(), msgctl(), and shmctl() system call entries are now marked COMPAT7 and new versions of those system calls which support the new ABI are now present. - The new system calls are assigned to the FBSD-1.1 version in libc. The FBSD-1.0 symbols in libc now refer to the old COMPAT7 system calls. - A simplistic framework for tagging system calls with compatibility symbol versions has been added to libc. Version tags are added to system calls by adding an appropriate __sym_compat() entry to src/lib/libc/incldue/compat.h. [1] PR: kern/16195 kern/113218 bin/129855 Reviewed by: arch@, rwatson Discussed with: kan, kib [1] Notes: svn path=/head/; revision=194910
* | Revert unnecessary memset after calloc.Zachary Loafman2009-05-281-1/+0
| | | | | | | | | | | | | | | | Suggested by: jhb Approved by: dfr (mentor) Notes: svn path=/head/; revision=192976
* | Fix an issue when nss fallback routines are used in a multithreaded application.Zachary Loafman2009-05-271-0/+1
| | | | | | | | | | | | | | | | Reviewed by: bushman Approved by: dfr (mentor) Notes: svn path=/head/; revision=192911
* | Add support for the FPA floating-point format on ARM. TheMarcel Moolenaar2008-12-231-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | FPA floating-point format is identical to the VFP format, but is always stored in big-endian. Introduce _IEEE_WORD_ORDER to describe the byte-order of the FP representation. Obtained from: Juniper Networks, Inc Notes: svn path=/head/; revision=186461
* | Merge the resolver part of BIND 9.4.3 into HEAD.Hajimu UMEMOTO2008-12-142-1/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | It includes the following fix: 2426. [bug] libbind: inet_net_pton() can sometimes return the wrong value if excessively large netmasks are supplied. [RT #18512] Reported by: Maksymilian Arciemowicz <cxib__at__securityreason.com> Notes: svn path=/head/; revision=186090
* | Add thread-specific caching for small size classes, based on magazines.Jason Evans2008-08-271-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This caching allows for completely lock-free allocation/deallocation in the steady state, at the expense of likely increased memory use and fragmentation. Reduce the default number of arenas to 2*ncpus, since thread-specific caching typically reduces arena contention. Modify size class spacing to include ranges of 2^n-spaced, quantum-spaced, cacheline-spaced, and subpage-spaced size classes. The advantages are: fewer size classes, reduced false cacheline sharing, and reduced internal fragmentation for allocations that are slightly over 512, 1024, etc. Increase RUN_MAX_SMALL, in order to limit fragmentation for the subpage-spaced size classes. Add a size-->bin lookup table for small sizes to simplify translating sizes to size classes. Include a hard-coded constant table that is used unless custom size class spacing is specified at run time. Add the ability to disable tiny size classes at compile time via MALLOC_TINY. Notes: svn path=/head/; revision=182225
* | Turn execvpe() into an internal libc routine.Ed Schouten2008-06-231-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding exevpe() has caused some ports to break. Even though execvpe() is a useful routine, it does not conform to any standards. This patch is a little bit different from the patch sent to the mailing list. I forgot to remove execvpe from the Symbol.map (which does not seem to miscompile libc, though). Reviewed by: davidxu Approved by: philip Notes: svn path=/head/; revision=179947
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