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2014-02-27rename superh port to "sh" for consistencyRich Felker-2/+2
linux, gcc, etc. all use "sh" as the name for the superh arch. there was already some inconsistency internally in musl: the dynamic linker was searching for "ld-musl-sh.path" as its path file despite its own name being "". there was some sentiment in both directions as to how to resolve the inconsistency, but overall "sh" was favored.
2014-02-25fix readdir not to set ENOENT when directory is removed while readingRich Felker-2/+7
per POSIX, ENOENT is reserved for invalid stream position; it is an optional error and would only happen if the application performs invalid seeks on the underlying file descriptor. however, linux's getdents syscall also returns ENOENT if the directory was removed between the time it was opened and the time of the read. we need to catch this case and remap it to simple end-of-file condition (null pointer return value like an error, but no change to errno). this issue reportedly affects GNU make in certain corner cases. rather than backing up and restoring errno, I've just changed the syscall to be made in a way that doesn't affect errno (via an inline syscall rather than a call to the __getdents function). the latter still exists for the purpose of providing the public getdents alias which sets errno.
2014-02-25in.h: new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACESzabolcs Nagy-0/+1
introduced in linux v3.13, 482fc6094afad572a4ea1fd722e7b11ca72022a0 to mitigate dns cache poisoning via fragmentation
2014-02-25if_ether.h: new ethernet protocol typeSzabolcs Nagy-0/+1
for High-availability Seamless Redundancy (HSR) specified in IEC 62439-3 new in linux v3.13, f421436a591d34fa5279b54a96ac07d70250cc8d
2014-02-25sys/socket.h: add the SO_MAX_PACING_RATE SOL_SOCKET optionSzabolcs Nagy-0/+1
introduced in linux v3.13, 62748f32d501f5d3712a7c372bbb92abc7c62bc7
2014-02-25elf.h: add aarch64 relocationsSzabolcs Nagy-0/+111
2014-02-25elf.h: new elf header flag to mark 2008-NaN vs legacy-NaN on mipsSzabolcs Nagy-0/+1
see glibc commit 9c21573c02446b3d5cf6a34b67c8545e5be6a600
2014-02-24add missing sub files for mipsel-sf to use softfloat codeRich Felker-0/+3
the build system has no automatic way to know this code applies to both big (default) and little endian variants, so explicit .sub files are needed.
2014-02-24mips: add mips-sf subarch support (soft-float)Szabolcs Nagy-3/+69
Userspace emulated floating-point (gcc -msoft-float) is not compatible with the default mips abi (assumes an FPU or in kernel emulation of it). Soft vs hard float abi should not be mixed, __mips_soft_float is checked in musl's configure script and there is no runtime check. The -sf subarch does not save/restore floating-point registers in setjmp/longjmp and only provides dummy fenv implementation.
2014-02-24fixup general __syscall breakage introduced in x32 portrofl0r-0/+6
the reordering of headers caused some risc archs to not see the __syscall declaration anymore. this caused build errors on mips with any compiler, and on arm and microblaze with clang. we now declare it locally just like the powerpc port does.
2014-02-23make the x32 port use the correct ld-musl-x32.path filenameRich Felker-1/+1
previously it was wrongly using the x86_64 one, precluding having both x32 and x86_64 libs present on the same system.
2014-02-23superh portBobby Bingham-0/+2350
2014-02-23fix x32 syscall arch.h timespec fixup coderofl0r-53/+49
it's legal to call the __syscall functions with more arguments than necessary, and the __syscall_cp cancel dummy impl. does just that. thus we must insert the switch for all possible syscalls numbers into all of the syscallN inline functions.
2014-02-23fix some issues in x32 syscall_cp_fixuprofl0r-11/+8
- the nanosleep fixup "fixed" the second timespec* argument erroneusly. - the futex fixup was missing the check for FUTEX_WAIT. - general cleanup using a macro.
2014-02-23mostly-cosmetic fixups to x32 port mergeRich Felker-12/+12
2014-02-23configure: suppress bogus pointer-int cast warningsrofl0r-0/+1
2014-02-23configure: recognize x86_64-x32 and x32rofl0r-0/+1
x32 is the internal arch name, but glibc uses x86_64-x32. there doesn't exist a specific triple for x32 in gcc and binutils. you're supposed to build your compiler for x86_64 and configure it with multilib support for "mx32". however it turns out that using a triple of x86_64-x32 makes gcc and binutils pick up the right arch (they detect it as x86_64) and allows us to have a unique triple for cross-compiler toolchains.
2014-02-23x32 port (diff against vanilla x86_64)rofl0r-793/+882
2014-02-23import vanilla x86_64 code as x32rofl0r-0/+2677
2014-02-23sys/shm.h: move arch specific structs to bits/rofl0r-16/+73
2014-02-22sys/sem.h: cheat and make all longs use time_t insteadrofl0r-8/+8
most of the members should be time_t anyway, and time_t has the correct semantics for "syscall_long", so it works on all archs, even x32.
2014-02-22use syscall_arg_t type for syscall prototypes in pthread coderofl0r-3/+8
2014-02-22internal/syscall.h: add syscall_arg_t macrorofl0r-6/+11
some 32-on-64 archs require that the actual syscall args be long long. in that case syscall_arch.h can define syscall_arg_t to whatever it needs and syscall.h picks it up. all other archs just use long as usual.
2014-02-22internal/syscall.h: use a macro for the syscall args castsrofl0r-13/+17
this allows syscall_arch.h to define the macro __scc if special casting is needed, as is the case for x32, where the actual syscall arguments are 64bit, but, in case of pointers, would get sign-extended and thus become invalid.
2014-02-21add fallback emulation for accept4 on old kernelsRich Felker-1/+12
the other atomic FD_CLOEXEC interfaces (dup3, pipe2, socket) already had such emulation in place. the justification for doing the emulation here is the same as for the other functions: it allows applications to simply use accept4 rather than having to have their own fallback code for ENOSYS/EINVAL (which one you get is arch-specific!) and there is no reasonable way an application could benefit from knowing the operation is emulated/non-atomic since there is no workaround at the application level for non-atomicity (that is the whole reason these interfaces were added).
2014-02-18add flock64 alias for (struct) flock in fcntl.hRich Felker-0/+1
this was a missing part of the LFS64 API; it's "needed" for use with fcntl and the corresponding lock commands.
2014-02-13add ipv6 and icmpv6 to getprotoent-family functionsRich Felker-1/+3
based on patch by orc.
2014-02-13fix typo in table for getprotoent that caused out-of-bound readsRich Felker-1/+1
this was unlikely to lead to any crash or dangerous behavior, but caused adjacent string constants to be treated as part of the protocols table, possibly returning nonsensical results for unknown protocol names/numbers or when getprotoent was called in a loop to enumerate all protocols.
2014-02-12make posix_spawn accept null pid pointer argumentsRich Felker-1/+1
this is a requirement in the specification that was overlooked.
2014-02-11add parens when bit and arith ops are mixed in macros in public headersSzabolcs Nagy-2/+2
another commit to silence gcc warnings (-Wparentheses) for standard headers. changed macros: LOG_UPTO, IN6_ARE_ADDR_EQUAL
2014-02-11fix signed and unsigned comparision in macros in public headersSzabolcs Nagy-3/+3
gcc -Wsign-compare warns about expanded macros that were defined in standard headers (before gcc 4.8) which can make builds fail that use -Werror. changed macros: WIFSIGNALED, __CPU_op_S
2014-02-09clone: make clone a wrapper around __cloneBobby Bingham-18/+22
The architecture-specific assembly versions of clone did not set errno on failure, which is inconsistent with glibc. __clone still returns the error via its return value, and clone is now a wrapper that sets errno as needed. The public clone has also been moved to src/linux, as it's not directly related to the pthreads API. __clone is called by pthread_create, which does not report errors via errno. Though not strictly necessary, it's nice to avoid clobbering errno here.
2014-02-09fix fesetenv(FE_DFL_ENV) on x86_64 (see previous commit)Szabolcs Nagy-1/+1
2014-02-09fix fesetenv(FE_DFL_ENV) on i386Szabolcs Nagy-1/+1
the default fenv was not set up properly, in particular the tag word that indicates the contents of the x87 registers was set to 0 (used) instead of 0xffff (empty) this could cause random crashes after setting the default fenv because it corrupted the fpu stack and then any float computation gives NaN result breaking the program logic (usually after a float to integer conversion).
2014-02-07in fdopen, avoid setting O_APPEND flag if it's already setRich Felker-1/+2
this saves a syscall in the case where the underlying open already took place with O_APPEND, which is common because fopen with append modes sets O_APPEND at the time of open before passing the file descriptor to __fdopen.
2014-02-07fix ftello result for append streams with unflushed outputRich Felker-1/+5
when there is unflushed output, ftello (and ftell) compute the logical stream position as the underlying file descriptor's offset plus an adjustment for the amount of buffered data. however, this can give the wrong result for append-mode streams where the unflushed writes should adjust the logical position to be at the end of the file, as if a seek to end-of-file takes place before the write. the solution turns out to be a simple trick: when ftello (indirectly) calls lseek to determine the current file offset, use SEEK_END instead of SEEK_CUR if the stream is append-mode and there's unwritten buffered data. the ISO C rules regarding switching between reading and writing for a stream opened in an update mode, along with the POSIX rules regarding switching "active handles", conveniently leave undefined the hypothetical usage cases where this fix might lead to observably incorrect offsets. the bug being fixed was discovered via the test case for glibc issue
2014-02-05reduce namespace pollution in netinet/udp.hRich Felker-7/+10
the affected part of the header is responsible for providing both GNU and BSD versions of the udphdr structure. previously, the namespace-polluting GNU names were always used for the actual struct members, and the BSD names, which are named in a manner resembling a sane namespace, were always macros defined to expand to the GNU names. now, unless _GNU_SOURCE is defined, the BSD names are used as the actual structure members, and the macros and GNU names only come into play when the application requests them.
2014-02-05fix use of legacy u_intN_t types in netinet/tcp.hRich Felker-73/+74
policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05add support for BSD struct tcphdr in netinet/tcp.hRich Felker-4/+41
there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05add nonstandard timespec/timeval conversion macros in sys/time.hRich Felker-0/+11
these are poorly designed (illogical argument order) and even poorly implemented (brace issues) on glibc, but unfortunately some software is using them. we could consider removing them again in the future at some point if they're documented as deprecated, but for now the simplest thing to do is just to provide them under _GNU_SOURCE.
2014-02-05add NO_ADDRESS macro to netdb.h as an alias for NO_DATATimo Teräs-0/+1
some applications expect it to be defined, despite the standard making it impossible for it to ever be returned as a value distinct from NO_DATA. since these macros are outside the scope of the current standards, no special effort is made to hide NO_ADDRESS under conditions where the others are exposed.
2014-02-05add legacy functions setkey() and encrypt()Timo Teräs-6/+66
2014-02-01fix nftw FTW_MOUNT flagRich Felker-2/+1
the incorrect check for crossing device boundaries was preventing nftw from traversing anything except the initially provided pathname.
2014-01-23fix an overflow in wcsxfrm when n==0Szabolcs Nagy-2/+4
posix allows zero length destination
2014-01-21add version.h to .gitignore; it is a generated fileRich Felker-0/+1
2014-01-21fix crash in dynamic linker when certain copy relocations are unsatisfiedRich Felker-1/+2
STB_WEAK is only a weak reference for undefined symbols (those with a section of SHN_UNDEF). otherwise, it's a weak definition. normally this distinction would not matter, since a relocation referencing a symbol that also provides a definition (not SHN_UNDEF) will always succeed in finding the referenced symbol itself. however, in the case of copy relocations, the referenced symbol itself is ignored in order to search for another symbol to copy from, and thus it's possible that no definition is found. in this case, if the symbol being resolved happened to be a weak definition, it was misinterpreted as a weak reference, suppressing the error path and causing a crash when the copy relocation was performed with a null source pointer passed to memcpy. there are almost certainly still situations in which invalid combinations of symbol and relocation types can cause the dynamic linker to crash (this is pretty much inevitable), but the intent is that crashes not be possible for symbol/relocation tables produced by a valid linker.
2014-01-21fix initstate to make the state buffer usable in setstateSzabolcs Nagy-12/+2
setstate could use the results of previous initstate or setstate calls (they return the old state buffer), but the documentation requires that an initialized state buffer should be possible to use in setstate immediately, which means that initstate should save the generator parameters in it. I also removed the copyright notice since it is present in the copyright file.
2014-01-15fix system breakage window during make install due to permissionsRich Felker-2/+1 was wrongly waiting until after atomically replacing the old file to set the correct permissions on the new file. in the case of the dynamic linker, this would cause a dynamic-linked chmod command not to run (due to missing executable permissions on the dynamic linker) and thus leave the system in an unusable state. even if chmod is static-linked, the old behavior had a race window where dynamic-linked programs could fail to run.
2014-01-15remove more unnecessary operand-size suffixes from x86_64 atomic.hRich Felker-3/+3
2014-01-11remove gratuitous temp vars, casts, and suffixes in x86_64 atomic.hRich Felker-13/+11
aside from general cleanup, this should allow the identical atomic.h file to be used for the upcoming x32 port.