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2012-09-09add preadv/pwritev syscall wrappersRich Felker-0/+35
2012-09-09fix typo introduced in poll.hRich Felker-1/+1
2012-09-09add linux ppoll syscall wrapperRich Felker-0/+19
2012-09-09reenable sync_file_range; should no longer break on mipsRich Felker-2/+2
2012-09-09add 7-arg syscall support for mipsRich Felker-4/+8
no syscalls actually use that many arguments; the issue is that some syscalls with 64-bit arguments have them ordered badly so that breaking them into aligned 32-bit half-arguments wastes slots with padding, and a 7th slot is needed for the last argument.
2012-09-09inline syscall support for armRich Felker-0/+53
most pure-syscall-wrapper functions compile to the smallest/simplest code possible (save r7 ; load syscall # ; svc 0 ; restore r7 ; tail call to __syscall_ret).
2012-09-09inline syscall support for mipsRich Felker-0/+57
this drastically reduces the size of some functions which are purely syscall wrappers. disabled for clang due to known bugs satisfying register constraints.
2012-09-09fix mips syscall_cp_asm code (saved register usage)Rich Felker-2/+2
2012-09-09fix broken mips syscall asmRich Felker-2/+2
this code was using $10 to save the syscall number, but $10 is not necessarily preserved by the kernel across syscalls. only mattered for syscalls that got interrupted by a signal and restarted. as far as i can tell, $25 is preserved by the kernel across syscalls.
2012-09-08disable sync_file_range for nowRich Felker-2/+3
something is wrong with the logic for the argument layout, resulting in compile errors on mips due to too many args to syscall... further information on how it's supposed to work will be needed before it can be reactivated.
2012-09-08syscall organization overhaulRich Felker-655/+420
now public syscall.h only exposes __NR_* and SYS_* constants and the variadic syscall function. no macros or inline functions, no __syscall_ret or other internal details, no 16-/32-bit legacy syscall renaming, etc. this logic has all been moved to src/internal/syscall.h with the arch-specific parts in arch/$(ARCH)/syscall_arch.h, and the amount of arch-specific stuff has been reduced to a minimum. changes still need to be reviewed/double-checked. minimal testing on i386 and mips has already been performed.
2012-09-08add acct syscall source file, omitted in last syscalls commitRich Felker-0/+9
2012-09-08add acct, accept4, setns, and dup3 syscalls (linux extensions)Rich Felker-0/+113
based on patch by Justin Cormack
2012-09-08add IPPROTO_HOPOPTS to in.hRich Felker-0/+1
2012-09-08add IPPROTO_MAX to in.hRich Felker-0/+1
2012-09-08fix redundant _Noreturn def in err.hRich Felker-7/+1
not sure why this was missed in the earlier commit.
2012-09-08remove all remaining redundant __restrict/__inline/_Noreturn defsRich Felker-76/+14
2012-09-08sysmacros major/minor: result should have type unsigned int, not dev_tRich Felker-2/+2
2012-09-08add linux tee syscallRich Felker-0/+9
2012-09-08add linux sync_file_range syscallRich Felker-0/+20
2012-09-08move fallocate syscall wrapper to linux-specific syscalls dirRich Felker-0/+0
2012-09-08add linux readahead syscallRich Felker-0/+9
2012-09-08add fallocate (nonstandardized) functionRich Felker-0/+12
this is equivalent to posix_fallocate except that it has an extra mode/flags argument to control its behavior, and stores the error in errno rather than returning an error code.
2012-09-08fix broken fallocate syscall in posix_fallocateRich Felker-1/+1
the syscall takes an extra flag argument which should be zero to meet the POSIX requirements.
2012-09-08add timerfd interfaces (untested)Rich Felker-0/+35
2012-09-08add stdnoreturn.h (C11)Rich Felker-0/+5
features.h contains the fallback logic for pre-C11 compilers
2012-09-07TCP_* is in the reserved namespace for tcp.h; make use of thatRich Felker-3/+4
2012-09-07remove unneeded judgemental commentary from ftw.hRich Felker-4/+0
2012-09-07default features: make musl usable without feature test macrosRich Felker-129/+102
the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-07add clang-compatible thread-pointer code for mipsRich Felker-0/+4
clang does not presently support the "v" constraint we want to use to get the result from $3, and trying to use register...__asm__("$3") to do the same invokes serious compiler bugs. so for now, i'm working around the issue with an extra temp register and putting $3 in the clobber list instead of using it as output. when the bugs in clang are fixed, this issue should be revisited to generate smaller/faster code like what gcc gets.
2012-09-07cleanup src/linux and src/misc trees, etc.Rich Felker-98/+74
previously, it was pretty much random which one of these trees a given function appeared in. they have now been organized into: src/linux: non-POSIX linux syscalls (possibly shard with other nixen) src/legacy: various obsolete/legacy functions, mostly wrappers src/misc: still mostly uncategorized; some misc POSIX, some nonstd src/crypt: crypt hash functions further cleanup will be done later.
2012-09-06fix constraint violation in ftwRich Felker-1/+4
void* does not implicitly convert to function pointer types.
2012-09-06provide loff_t for splice syscallRich Felker-0/+1
so far, this is the only actual use of loff_t i've found. some software, including glib, assumes loff_t must exist if splice exists; this is a reasonable assumption since the official prototype for splice uses loff_t, as it always works with 64-bit offsets regardless of the selected libc off_t size. i'm using #define for now rather than a typedef to make it easy to define in other headers if necessary (like the LFS64 ugliness), but it may be necessary to add it to alltypes.h eventually if other functions end up needing it.
2012-09-06further use of _Noreturn, for non-plain-C functionsRich Felker-19/+47
note that POSIX does not specify these functions as _Noreturn, because POSIX is aligned with C99, not the new C11 standard. when POSIX is eventually updated to C11, it will almost surely give these functions the _Noreturn attribute. for now, the actual _Noreturn keyword is not used anyway when compiling with a c99 compiler, which is what POSIX requires; the GCC __attribute__ is used instead if it's available, however. in a few places, I've added infinite for loops at the end of _Noreturn functions to silence compiler warnings. presumably __buildin_unreachable could achieve the same thing, but it would only work on newer GCCs and would not be portable. the loops should have near-zero code size cost anyway. like the previous _Noreturn commit, this one is based on patches contributed by philomath.
2012-09-06fix invalid implicit pointer conversion in gnulib-compat functionsRich Felker-1/+1
2012-09-06add _Noreturn function attribute, with fallback for pre-C11 GNUCRich Felker-9/+23
2012-09-06dladdr should be available under _BSD_SOURCE as well as _GNU_SOURCERich Felker-1/+1
2012-09-06use restrict everywhere it's required by c99 and/or posix 2008Rich Felker-382/+552
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2012-09-06remove dependency of wmemmove on wmemcpy directionRich Felker-4/+4
unlike the memmove commit, this one should be fine to leave in place. wmemmove is not performance-critical, and even if it were, it's already copying whole 32-bit words at a time instead of bytes.
2012-09-06remove dependency of memmove on memcpy directionRich Felker-5/+4
this commit introduces a performance regression in many uses of memmove, which will need to be addressed before the next release. i'm making it as a temporary measure so that the restrict patch can be committed without invoking undefined behavior when memmove calls memcpy with overlapping regions.
2012-09-06fix broken ttyname[_r] (failure to null-terminate result)Rich Felker-1/+4
2012-09-02avoid "inline" in public headers for strict c89 compatibilityRich Felker-62/+57
while musl itself requires a c99 compiler, some applications insist on being compiled with c89 compilers, and use of "inline" in the headers was breaking them. much of this had been avoided already by just skipping the inline keyword in pre-c99 compilers or modes, but this new unified solution is cleaner and may/should result in better code generation in the default gcc configuration.
2012-09-01fix wrong type for poll.h nfds_tRich Felker-1/+1
this should not break anything since the type should never be used except as the argument type for poll.
2012-08-30fix missing statics in crypt_sha256 codeRich Felker-3/+3
2012-08-29anti-DoS rounds count limits for blowfish and des cryptRich Felker-2/+2
all of the limits could use review, but err on the side of avoiding excessive rounds for now.
2012-08-29limit sha512 rounds to similar runtime to sha256 limitRich Felker-1/+1
these limits could definitely use review, but for now, i feel consistency and erring on the side of preventing servers from getting bogged down by excessively-slow user-provided settings (think .htpasswd) are the best policy. blowfish should be updated to match.
2012-08-29add sha256/sha512 cryptRich Felker-1/+700
based on versions sent to the list by nsz, with some simplification and debloating. i'd still like to get them a bit smaller, or ideally merge them into a single file with most of the code being shared, but that can be done later.
2012-08-29get rid of eh_frame bloatRich Felker-3/+12
if needed for debugging, it will be output in the .debug_frame section instead, where it is not part of the loaded program and where the strip command is free to strip it.
2012-08-27fix bug caused by main app & libc having map set; cannot free themRich Felker-1/+1
2012-08-26dladdr support for dynamic linker (nonstandard extension)Rich Felker-0/+105
based on patches submitted by boris brezillon. this commit also fixes the issue whereby the main application and libc don't have the address ranges of their mappings stored, which was theoretically a problem for RTLD_NEXT support in dlsym; it didn't actually matter because libc never calls dlsym, and it seemed to be doing the right thing (by chance) for symbols in the main program as well.
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