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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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* add additional compatibility union member for ipv6 addressesRich Felker2012-05-031-0/+2
| | | | in6_* is in the reserved namespace, so this is valid
* remove minimal linux kernel headersRich Felker2012-05-015-621/+0
| | | | | | | | | | | these were at best of limited usefulness (for bootstrapping new systems, mainly) and at worst caused real kernel headers to get overwritten when upgrading libc. in case they're needed by anyone, the exact same files are now available in a new git repository: git://git.etalabs.net/mini-lkh
* support alternate glibc name pow10 for exp10Rich Felker2012-05-011-0/+3
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* first try at writing an efficient and "correct" exp10Rich Felker2012-04-301-0/+4
| | | | | | | | | this is a nonstandard function so it's not clear what conditions it should satisfy. my intent is that it be fast and exact for positive integral exponents when the result fits in the destination type, and fast and correctly rounded for small negative integral exponents. otherwise we aim for at most 1ulp error; it seems to differ from pow by at most 1ulp and it's often 2-5 times faster than pow.
* add linux-specific unshare syscall wrapperRich Felker2012-04-291-0/+1
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* implement getusershell, etc. legacy functionsRich Felker2012-04-221-0/+3
| | | | | I actually wrote these a month ago but forgot to integrate them. ugly, probably-harmful-to-use functions, but some legacy apps want them...
* getdtablesize is not standard; move it to its correct spot in unistd.hRich Felker2012-04-221-1/+1
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* fix breakage in endian.hRich Felker2012-04-221-1/+1
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* add some ugly byte swapping cruft in endian.hRich Felker2012-04-221-0/+59
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* add getresuid and getresgid syscall wrappersRich Felker2012-04-221-0/+2
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* fix header typoRich Felker2012-04-181-1/+1
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* legacy junk compatibility grab-bagRich Felker2012-04-184-7/+34
| | | | | | - add the rest of the junk traditionally in sys/param.h - add prototypes for some nonstandard functions - add _GNU_SOURCE to their source files so the compiler can check proto
* fix incorrect macro name for MATH_ERREXCEPT in math.hRich Felker2012-04-181-1/+1
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* move F_DUPFD_CLOEXEC out of bitsRich Felker2012-04-151-0/+2
| | | | | | fcntl values 1024 and up are universal, arch-independent. later I'll add some of the other linux-specific ones for notify, leases, pipe size, etc. here too.
* rename __sa_restorer to sa_restorer in struct sigactionRich Felker2012-04-131-1/+1
| | | | | | | | | this is legal since sa_* is in the reserved namespace for signal.h, per posix. note that the sa_restorer field is not used anywhere, so programs that are trying to use it may still break, but at least they'll compile. if it turns out such programs actually need to be able to set their own sa_restorer to function properly, i'll add the necessary code to sigaction.c later.
* fix alloca issue in stdlib.h tooRich Felker2012-04-091-1/+1
| | | | I forgot _GNU_SOURCE also has it declared here...
* alloca cannot be a function. #define it to the gcc builtin if possibleRich Felker2012-04-091-0/+4
| | | | | | | | gcc makes this mapping by default anyway, but it will be disabled by -fno-builtin (and presumably by -std=c99 or similar). for the main program the error will be reported by the linker, and the issue can easily be fixed, but for dynamic-loaded so files, the error cannot be detected until dlopen time, at which point it has become very obscure.
* remove useless (at best, harmful) feature test checks in aio.hRich Felker2012-04-031-5/+0
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* optimize signbit macroRich Felker2012-03-301-2/+2
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* make math.h more c++-friendlyRich Felker2012-03-301-2/+5
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* simplify creal and cimag macrosRich Felker2012-03-221-8/+8
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* add creal/cimag macros in complex.h (and use them in the functions defs)Rich Felker2012-03-221-0/+11
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* tgmath.h: suppress any existing macro definitions before defining macrosRich Felker2012-03-221-0/+63
| | | | | this is necessary so that we can freely add macro versions of some of the math/complex functions without worrying about breaking tgmath.
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