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* fix signalfd not to ignore flagsRich Felker2013-04-071-1/+12
| | | | | | also include fallback code for broken kernels that don't support the flags. as usual, the fallback has a race condition that can leak file descriptors.
* silence nonsensical warnings in timer_createRich Felker2013-04-061-2/+2
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* add support for program_invocation[_short]_nameRich Felker2013-04-063-2/+18
| | | | | | | | | | this is a bit ugly, and the motivation for supporting it is questionable. however the main factors were: 1. it will be useful to have this for certain internal purposes anyway -- things like syslog. 2. applications can just save argv[0] in main, but it's hard to fix non-portable library code that's depending on being able to get the invocation name without the main application's help.
* fix argument omission in ABI-compat weak_alias for fscanfRich Felker2013-04-061-1/+1
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* Add ABI compatability aliases.Isaac Dunham2013-04-0513-0/+38
| | | | | | | | GNU used several extensions that were incompatible with C99 and POSIX, so they used alternate names for the standard functions. The result is that we need these to run standards-conformant programs that were linked with glibc.
* fix type error in pthread_create, introduced with pthread_getattr_npRich Felker2013-04-061-1/+1
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* getifaddrs: remove unused labelrofl0r2013-04-061-1/+0
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* getifaddrs: use if_nameindex to enumerate interfacesrofl0r2013-04-051-23/+9
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* getifaddrs: one less indent levelrofl0r2013-04-051-30/+28
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* getifaddrs: less mallocrofl0r2013-04-051-55/+52
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* include/ifaddrs.h: add prototypes for get/freeifaddrsrofl0r2013-04-051-0/+3
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* add getifaddrsrofl0r2013-04-052-0/+222
| | | | | | supports ipv4 and ipv6, but not the "extended" usage where usage statistics and other info are assigned to ifa_data members of duplicate entries with AF_PACKET family.
* net/if.h: add some missing IFF_ constantsrofl0r2013-04-051-0/+5
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* add prototype for dn_skipnameRich Felker2013-04-041-0/+1
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* implement dn_skipname (legacy resolver function)Rich Felker2013-04-041-0/+12
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* add arpa/tftp.hrofl0r2013-04-051-0/+31
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* fix type issues in stdint.h so underlying types of 64-bit types match ABIRich Felker2013-04-047-8/+33
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* eliminate bits/wchar.hRich Felker2013-04-048-26/+15
| | | | | | | the preprocessor can reliably determine the signedness of wchar_t. L'\0' is used for 0 in the expressions so that, if the underlying type of wchar_t is long rather than int, the promoted type of the expression will match the type of wchar_t.
* eliminate gcc dependency for testing char signedness in limits.hRich Felker2013-04-041-1/+1
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* add put*ent functions for passwd/group files and similar for shadowRich Felker2013-04-045-0/+36
| | | | | | | | | since shadow does not yet support enumeration (getspent), the corresponding FILE-based get and put versions are also subbed out for now. this is partly out of laziness and partly because it's not clear how they should work in the presence of TCB shadow files. the stubs should make it possible to compile some software that expects them to exist, but such software still may not work properly.
* cleanup wcstombsRich Felker2013-04-041-12/+1
| | | | | remove redundant headers and comments; this file is completely trivial now. also, avoid temp var.
* cleanup mbstowcs wrapperRich Felker2013-04-041-10/+0
| | | | | remove unneeded headers. this file is utterly trivial now and there's no sense in having a comment to state that it's in the public domain.
* minor optimization to mbstowcsRich Felker2013-04-041-2/+1
| | | | | | there is no need to zero-fill an mbstate_t object in the caller; mbsrtowcs will automatically treat a null pointer as the initial state.
* fix incorrect range checks in wcsrtombsRich Felker2013-04-041-3/+3
| | | | | | negative values of wchar_t need to be treated in the non-ASCII case so that they can properly generate EILSEQ rather than getting truncated to 8bit values and stored in the output.
* overhaul mbsrtowcsRich Felker2013-04-041-69/+64
| | | | | | | | | | | | | | | | | these changes fix at least two bugs: - misaligned access to the input as uint32_t for vectorized ASCII test - incorrect src pointer after stopping on EILSEQ in addition, the text of the standard makes it unclear whether the mbstate_t object is to be modified when the destination pointer is null; previously it was cleared either way; now, it's only cleared when the destination is non-null. this change may need revisiting, but it should not affect most applications, since calling mbsrtowcs with non-zero state can only happen when the head of the string was already processed with mbrtowc. finally, these changes shave about 20% size off the function and seem to improve performance by 1-5%.
* re-add useconds_trofl0r2013-04-028-0/+8
| | | | | | | | this type was removed back in 5243e5f1606a9c6fcf01414e , because it was removed from the XSI specs. however some apps use it. since it's in the POSIX reserved namespace, we can expose it unconditionally.
* add arpa/nameser_compat.hrofl0r2013-04-021-0/+2
| | | | the contents of this header are already in arpa/nameser.h
* make tm_zone etc visible under _GNU_SOURCErofl0r2013-04-021-1/+1
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* __time_to_tm: initialize tm_zone and tm_gmtoffrofl0r2013-04-021-0/+2
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* add syscall numbers for the new kcmp and finit_module syscallsSzabolcs Nagy2013-04-016-9/+46
| | | | and remove syscall todos from microblaze
* add the new SO_REUSEPORT socket option to mips and powerpcSzabolcs Nagy2013-04-012-1/+2
| | | | | SO_REUSEPORT implementation was merged in the linux kernel commit c617f398edd4db2b8567a28e899a88f8f574798d 2013-01-23
* add new socket options to sys/socket.h following linuxSzabolcs Nagy2013-04-011-2/+17
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* adding ethernet protocol ids to if_ether.h following linuxSzabolcs Nagy2013-04-011-0/+15
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* add ADJ_SETOFFSET timex mode bit (new in linux v2.6.39)Szabolcs Nagy2013-04-011-0/+1
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* add new linux tcp socket option flags to netinet/tcp.hSzabolcs Nagy2013-04-011-0/+10
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* fix typo in setpriority syscall wrapperRich Felker2013-04-011-1/+1
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* provide prototype for pthread_getattr_npRich Felker2013-03-311-0/+4
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* implement pthread_getattr_npRich Felker2013-03-313-2/+31
| | | | | | this function is mainly (purely?) for obtaining stack address information, but we also provide the detach state since it's easy to do anyway.
* remove __SYSCALL_SSLEN arch macro in favor of using public _NSIGRich Felker2013-03-2621-35/+27
| | | | | | | | | | | | | | the issue at hand is that many syscalls require as an argument the kernel-ABI size of sigset_t, intended to allow the kernel to switch to a larger sigset_t in the future. previously, each arch was defining this size in syscall_arch.h, which was redundant with the definition of _NSIG in bits/signal.h. as it's used in some not-quite-portable application code as well, _NSIG is much more likely to be recognized and understood immediately by someone reading the code, and it's also shorter and less cluttered. note that _NSIG is actually 65/129, not 64/128, but the division takes care of throwing away the off-by-one part.
* provide emulation of fcntl F_DUPFD_CLOEXEC on old kernelsRich Felker2013-03-261-0/+16
| | | | | | | | | I'm not entirely happy with the amount of ugliness here, but since F_DUPFD_CLOEXEC is used elsewhere in code that's expected to work on old kernels (popen), it seems necessary. reportedly even some modern kernels went back and broke F_DUPFD_CLOEXEC (making it behave like plain F_DUPFD), so it might be necessary to add some additional fixup code later to deal with that issue too.
* in pipe2, use pipe() rather than __syscall(SYS_pipe, ...) for fallbackRich Felker2013-03-251-3/+3
| | | | | | | SYS_pipe is not usable directly in general, since mips has a very broken calling convention for the pipe syscall. instead, just call the function, so that the mips-specific ugliness is isolated in mips/pipe.s and not copied elsewhere.
* rewrite popen to use posix_spawn instead of fragile vfork hacksRich Felker2013-03-241-41/+41
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* remove cruft from pre-posix_spawn version of the system functionRich Felker2013-03-241-6/+0
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* add deprecated SIGIOT alias for SIGABRTRich Felker2013-03-235-1/+5
| | | | reportedly some programs (e.g. showkeys in the kbd package) use it.
* fix multiple bugs in syslog interfacesRich Felker2013-03-231-24/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. as reported by William Haddon, the value returned by snprintf was wrongly used as a length passed to sendto, despite it possibly exceeding the buffer length. this could lead to invalid reads and leaking additional data to syslog. 2. openlog was storing a pointer to the ident string passed by the caller, rather than copying it. this bug is shared with (and even documented in) other implementations like glibc, but such behavior does not seem to meet the requirements of the standard. 3. extremely long ident provided to openlog, or corrupt ident due to the above issue, could possibly have resulted in buffer overflows. despite having the potential for smashing the stack, i believe the impact is low since ident points to a short string literal in typical application usage (and per the above bug, other usages will break horribly on other implementations). 4. when used with LOG_NDELAY, openlog was not connecting the newly-opened socket; sendto was being used instead. this defeated the main purpose of LOG_NDELAY: preparing for chroot. 5. the default facility was not being used at all, so all messages without an explicit facility passed to syslog were getting logged at the kernel facility. 6. setlogmask was not thread-safe; no synchronization was performed updating the mask. the fix uses atomics rather than locking to avoid introducing a lock in the fast path for messages whose priority is not in the mask. 7. in some code paths, the syslog lock was being unlocked twice; this could result in releasing a lock that was actually held by a different thread. some additional enhancements to syslog such as a default identifier based on argv[0] or similar may still be desired; at this time, only the above-listed bugs have been fixed.
* remove soname from libc.so/ld-muslRich Felker2013-03-091-1/+1
| | | | | | | | | | | | it serves no purpose (binaries linked against musl as -lc/libc.so automatically get the right DT_NEEDED value of libc.so) and causes ldconfig to misbehave (making a symlink to ld-musl named libc.so in /lib). ldconfig is not used on pure musl systems, but if ld-musl is installed on a system where it's not the primary libc, this will pollute the system /lib with a symlink to musl named libc.so, which should NOT exist and could cause problems linking native apps. also, the existence of the soname caused spurious warnings from ldconfig when /lib and /usr/lib were the same physical directory.
* fix epoll structure alignment on non-x86_64 archsRich Felker2013-03-061-1/+5
| | | | | | | | | | | | | | this fix is far from ideal and breaks the rule of not using arch-specific #ifdefs, but for now we just need a solution to the existing breakage. the underlying problem is that the kernel folks made a very stupid decision to make misalignment of this struct part of the kernel API/ABI for x86_64, in order to avoid writing a few extra lines of code to handle both 32- and 64-bit userspace on 64-bit kernels. I had just added the packed attribute unconditionally thinking it was harmless on 32-bit archs, but non-x86 32-bit archs have 8-byte alignment on 64-bit types.
* fix missing type error in grp.h from adding fgetgrentRich Felker2013-03-061-0/+4
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* fix types for wctype_t and wctrans_tRich Felker2013-03-047-16/+16
| | | | | | | | | | | | | | | | | | | | wctype_t was incorrectly "int" rather than "long" on x86_64. not only is this an ABI incompatibility; it's also a major design flaw if we ever wanted wctype_t to be implemented as a pointer, which would be necessary if locales support custom character classes, since int is too small to store a converted pointer. this commit fixes wctype_t to be unsigned long on all archs, matching the LSB ABI; this change does not matter for C code, but for C++ it affects mangling. the same issue applied to wctrans_t. glibc/LSB defines this type as const __int32_t *, but since no such definition is visible, I've just expanded the definition, int, everywhere. it would be nice if these types (which don't vary by arch) could be in wctype.h, but the OB XSI requirement in POSIX that wchar.h expose some types and functions from wctype.h precludes doing so. glibc works around this with some hideous hacks, but trying to duplicate that would go against the intent of musl's headers.
* fix some obscure header type size/alignment issuesRich Felker2013-03-044-10/+9
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