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* add prototypes for getw/putwRich Felker2012-07-041-0/+2
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* jmp_buf overhaul fixing several issuesRich Felker2012-07-031-1/+5
| | | | | | | | | | | | | on arm, the location of the saved-signal-mask flag and mask were off by one between sigsetjmp and siglongjmp, causing incorrect behavior restoring the signal mask. this is because the siglongjmp code assumed an extra slot was in the non-sig jmp_buf for the flag, but arm did not have this. now, the extra slot is removed for all archs since it was useless. also, arm eabi requires jmp_buf to have 8-byte alignment. we achieve that using long long as the type rather than with non-portable gcc attribute tags.
* replace old and ugly crypt implementationRich Felker2012-06-291-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | the new version is largely the work of Solar Designer, with minor changes for integration with musl. compared to the old code, text size is reduced by about 7k, stack space usage by about 70k, and performance is greatly improved by avoiding expensive calculation of constant tables on each run. this version also adds support for extended des-based password hashes, which allow for unlimited key (password) length and configurable iteration counts. i've also published the interface for crypt_r in a new crypt.h header. especially since this is not a standard interface, i did not feel compelled to match the glibc abi for the crypt_data structure. the glibc structure is way too big to allocate on the stack; in fact it's so big that the first usage may cause the main thread to exceed its pre-committed stack size of 128k and thus could cause the program to crash even on systems with overcommit disabled. the only legitimate use of crypt_data for crypt_r is to store the hash string to return, so i've reserved 256 bytes, which should be more than sufficient (longest known password hashes are ~60 characters, and beyond that is possibly even exceeding some implementations' passwd file field size limit).
* add process_vm_readv and process_vm_writev syscall wrappersRich Felker2012-06-231-0/+9
| | | | based on a patch submitted by Kristian L. <email@thexception.net>
* proper error handling for fcntl F_GETOWN on modern kernelsRich Felker2012-06-201-0/+11
| | | | | | on old kernels, there's no way to detect errors; we must assume negative syscall return values are pgrp ids. but if the F_GETOWN_EX fcntl works, we can get a reliable answer.
* include declarations for new stdio_ext functions (gnulib support)Rich Felker2012-06-191-0/+5
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* header file fixes: multiple include guard consistency and correctnessRich Felker2012-06-1510-18/+18
| | | | | | | one file was reusing another file's macro name, and many had inconsistent underscores and application of SYS prefix, etc. patch by Szabolcs Nagy (nsz)
* revert one change in time.h; no evidence BSD_SOURCE should expose these..Rich Felker2012-06-131-1/+1
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* fix feature test macros in time.hRich Felker2012-06-131-5/+2
| | | | | stime is not _XOPEN_SOURCE, and some functions were missing with _BSD_SOURCE..
* add timegm function (inverse of gmtime), nonstandardRich Felker2012-06-131-0/+3
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* add (currently stubbed due to stubbed strverscmp) versionsort functionRich Felker2012-06-131-0/+5
| | | | | | | | | | | based on patch by Emil Renner Berthing, with minor changes to dirent.h for LFS64 and organization of declarations this code should work unmodified once a real strverscmp is added, but I've been hesitant to add it because the GNU strverscmp behavior is harmful in a lot of cases (for instance if you have numeric filenames in hex). at some point I plan on trying to design a variant of the algorithm that behaves better on a mix of filename styles.
* fix signedness errors in stdint.h constant macrosRich Felker2012-06-081-2/+2
| | | | | the types of these expressions must match the integer promotions. unsigned 8- and 16-bit values promote to signed int, not unsigned int.
* fix sysinfo, try 2. it seems to work this time.Rich Felker2012-06-071-10/+10
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* sysinfo struct was utter nonsense; no idea where it came from.Rich Felker2012-06-071-4/+3
| | | | | this broke the busybox "free" utility (memory reporting) and possibly other things like uptime.
* _GNU_SOURCE is supposed to imply _LARGEFILE64_SOURCERich Felker2012-06-0415-15/+15
| | | | | | | | | this is ugly and stupid, but now that the *64 symbol names exist, a lot of broken GNU software detects them in configure, then either breaks during build due to missing off64_t definition, or attempts to compile without function declarations/prototypes. "fixing" it here is easier than telling everyone to add yet another feature test macro to their builds.
* declare environ in unistd.h when _GNU_SOURCE feature test macro is usedRich Felker2012-06-021-0/+1
| | | | | lots of broken programs expect this, and it's gotten to the point of being a troubleshooting FAQ topic. best to just fix it.
* there is no such GNU function fpurge, only __fpurge.Rich Felker2012-05-281-1/+0
| | | | no idea where I got the idea fpurge should exist...
* add prototype for BSD/GNU stdio *_unlocked extension functionsRich Felker2012-05-281-2/+12
| | | | also fix up distinction of what is GNU-only and what's GNU+BSD
* remove duplicate lfs64 cruft in stdio.hRich Felker2012-05-281-2/+0
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* math: fix nextafter definition in tgmath.hnsz2012-05-281-1/+1
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* debloat jmp_buf in _GNU_SOURCE modeRich Felker2012-05-231-3/+0
| | | | | | | | i originally made it the same size as the bloated GNU version, which contains space for saved signal mask, but this makes some structures containing jmp_buf become much larger for no benefit. we will never use the signal mask field with plain setjmp; sigsetjmp serves that purpose.
* remove everything related to forkallRich Felker2012-05-221-1/+0
| | | | | | | | | | i made a best attempt, but the intended semantics of this function are fundamentally contradictory. there is no consistent way to handle ownership of locks when forking a multi-threaded process. the code could have worked by accident for programs that only used normal mutexes and nothing else (since they don't actually store or care about their owner), but that's about it. broken-by-design interfaces that aren't even in glibc (only solaris) don't belong in musl.
* some feature test fixes for unistd.hRich Felker2012-05-221-16/+16
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* _GNU_SOURCE implies all BSD features except ones GNU rejectsRich Felker2012-05-221-1/+1
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* various header cleanups, some related to _BSD_SOURCE additionRich Felker2012-05-223-17/+9
| | | | | | there is no reason to avoid multiple identical macro definitions; this is perfectly legal C, and even with the maximal warning options enabled, gcc does not issue any warning for it.
* bsd_signal is a legacy (removed) XSI function, not needed in _BSD_SOURCERich Felker2012-05-221-4/+1
| | | | | its only purpose was for use on non-BSD systems that implement sysv semantics for signal() by default.
* support _BSD_SOURCE feature test macroRich Felker2012-05-2222-41/+126
| | | | | patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible.
* move getpass decl to the right placeRich Felker2012-05-202-1/+1
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* useless lastlog path just to make some stuff happyRich Felker2012-05-141-0/+1
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* missing limit LOGIN_NAME_MAXRich Felker2012-05-141-0/+1
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* use __h_errno_location for h_errnoRich Felker2012-05-121-1/+5
| | | | | | we do not bother making h_errno thread-local since the only interfaces that use it are inherently non-thread-safe. but still use the potentially-thread-local ABI to access it just to avoid lock-in.
* susv4 removed gethostbyname, etc. legacy cruft.Rich Felker2012-05-121-9/+7
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* namespace cleanup - NI_* is NOT reserved by netdb.hRich Felker2012-05-121-3/+2
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* some gnu junk in netdb.hRich Felker2012-05-121-0/+8
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* fix missing va_list for vsyslogRich Felker2012-05-121-2/+2
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* search: add tdestroy (gnu extension)nsz2012-05-131-0/+2
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* add missing IN6_ARE_ADDR_EQUALRich Felker2012-05-111-0/+5
| | | | | written to avoid multiple conditional jumps and avoid ugly repetitive lines in the header file.
* add one more bogus legacy headerRich Felker2012-05-101-0/+9
| | | | | | | this one is for program(s|ers) who haven't heard of uint16_t and uint32_t (which are obviously the correct types for use in such situations, as they're the argument/return types for ntohs/htons and ntohl/htonl).
* move vsyslog out of SYSLOG_NAMES conditionalRich Felker2012-05-101-2/+4
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* fix missing parens in bit op macros (param.h)Rich Felker2012-05-101-1/+1
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* and another bug in setbit, etc. macros..Rich Felker2012-05-101-1/+1
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* fix typo in sys/param.h that broke setbit, etc. macrosRich Felker2012-05-101-1/+1
| | | | this is all junk, but some programs use it.
* omit declaration of basename wrongly interpreted as prototype in C++Rich Felker2012-05-091-0/+2
| | | | | | | | | | | | | | | | | | | the non-prototype declaration of basename in string.h is an ugly compromise to avoid breaking 2 types of broken software: 1. programs which assume basename is declared in string.h and thus would suffer from dangerous pointer-truncation if an implicit declaration were used. 2. programs which include string.h with _GNU_SOURCE defined but then declare their own prototype for basename using the incorrect GNU signature for the function (which would clash with a correct prototype). however, since C++ does not have non-prototype declarations and interprets them as prototypes for a function with no arguments, we must omit it when compiling C++ code. thankfully, all known broken apps that suffer from the above issues are written in C, not C++.
* some extra legacy header stuffRich Felker2012-05-063-0/+32
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* take byte order from gcc if gcc has defined itRich Felker2012-05-061-0/+4
| | | | | | | this only works with gcc 4.6 and later, but it allows us to support non-default endianness on archs like arm, mips, ppc, etc. that can do both without having separate header sets for both variants, and it saves one #include even on fixed-endianness archs like x86.
* add isastream (obsolete STREAMS junk)Rich Felker2012-05-061-1/+2
| | | | | | apparently some packages see stropts.h and want to be able to use this. the implementation checks that the file descriptor is valid by using fcntl/F_GETFD so it can report an error if not (as specified).
* fix definitions of FP_ILOGB constantsRich Felker2012-05-051-2/+2
| | | | | | | | | | | | | | | two issues: (1) the type was wrong (unsigned instead of signed int), and (2) the value of FP_ILOGBNAN should be INT_MIN rather than INT_MAX to match the ABI. this is also much more useful since INT_MAX corresponds to a valid input (infinity). the standard would allow us to set FP_ILOGB0 to -INT_MAX instead of INT_MIN, which would give us distinct values for ilogb(0) and ilogb(NAN), but the benefit seems way too small to justify ignoring the ABI. note that the macro is just a "portable" (to any twos complement system where signed and unsigned int have the same width) way to write INT_MIN without needing limits.h. it's valid to use this method since these macros are not required to work in #if directives.
* add *64 junk for sys/*.h headersRich Felker2012-05-047-0/+50
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* add support for ugly *64 functions with _LARGEFILE64_SOURCERich Felker2012-05-048-0/+68
| | | | | | | | | | | | | | | | musl does not support legacy 32-bit-off_t whatsoever. off_t is always 64 bit, and correct programs that use off_t and the standard functions will just work out of the box. (on glibc, they would require -D_FILE_OFFSET_BITS=64 to work.) however, some programs instead define _LARGEFILE64_SOURCE and use alternate versions of all the standard types and functions with "64" appended to their names. we do not want code to actually get linked against these functions (it's ugly and inconsistent), so macros are used instead of prototypes with weak aliases in the library itself. eventually the weak aliases may be added at the library level for the sake of using code that was originally built against glibc, but the macros will still be the desired solution in the headers.
* uglify headers for the sake of junk that compiles with gcc -std=c89/-ansiRich Felker2012-05-032-6/+24
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