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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
install.sh 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.
2014-01-11remove size suffix in x86_64 __pthread_self asmRich Felker-1/+1
the operand size is unnecessary, since the assembler knows it from the destination register size. removing the suffix makes it so the same code should work for x32.
2014-01-11make type of st_dev explicitly dev_t in x86_64 stat.hRich Felker-1/+1
otherwise it's unclear that it's correct. aside from that, it makes for a gratuitous difference between the x86_64 header and the upcoming x32 header.
2014-01-08fix namespace violation in sys/shm.hRich Felker-6/+8
in fixing this, I've changed the logic from ugly #if/#else blocks inside the struct shm_info definition to a fixed struct definition and optional macros to rename the elements. this will be helpful if we need to move shm_info to a bits header in the future, as it will keep the feature test logic out of bits.
2014-01-08fix namespace violations in utmpx.hRich Felker-5/+12
2014-01-08add IUTF8 to termios.h on archs that were missing itRich Felker-0/+4
2014-01-08fix namespace violations in termios.h, at least mostlyRich Felker-52/+49
the fix should be complete on archs that use the generic definitions (i386, arm, x86_64, microblaze), but mips and powerpc have not been checked thoroughly and may need more fixes.
2014-01-08fix remaining known namespace violations for netinet/in.hRich Felker-22/+18
the imr_, imsf_, ip6_, ip6m_, ipi_, ipi6_, SCM_, and SOL_ prefixes are not in the reserved namespace for this header. thus the constants and structures using them need to be protected under appropriate feature test macros. this also affects some headers which are permitted to include netinet/in.h, particularly netdb.h and arpa/inet.h. the SOL_ macros are moved to sys/socket.h where they are in the reserved namespace (SO*). they are still accessible via netinet/in.h since it includes sys/socket.h implicitly (which is permitted). the SCM_SRCRT macro is simply removed, since the definition used for it, IPV6_RXSRCRT is not defined anywhere. it could be re-added, this time in sys/socket.h, if the appropriate value can be determined; however, given that the erroneous definition was not caught, it is unlikely that any software actually attempts to use SCM_SRCRT.
2014-01-08fix inadvertent use of struct in place of union for semunRich Felker-3/+3
2014-01-08add __isoc99_vfscanf weak alias to vfscanfSzabolcs Nagy-0/+2
this glibc abi compatibility function was missed when the scanf aliases were added.
2014-01-08math: add drem and dremf weak aliases to i386 remainder asmSzabolcs Nagy-0/+6
weak_alias was only in the c code, so drem was missing on platforms where remainder is implemented in asm.
2014-01-08fix type of semctl variadic argumentRich Felker-4/+10
per POSIX, the variadic argument has type union semun, which may contain a pointer or int; the type read depends on the command being issued. this allows the userspace part of the implementation to be type-correct without requiring special-casing for different commands. the kernel always expects to receive the argument interpreted as unsigned long (or equivalently, a pointer), and does its own handling of extracting the int portion from the representation, as needed. this change fixes two possible issues: most immediately, reading the argument as a (signed) long and passing it to the syscall would perform incorrect sign-extension of pointers on the upcoming x32 target. the other possible issue is that some archs may use different (user-space) argument-passing convention for unions, preventing va_arg from correctly obtaining the argument when the type long (or even unsigned long or void *) is passed to it.
2014-01-08in fcntl, avoid passing pointer arguments to syscalls as longsRich Felker-3/+12
really, fcntl should be changed to use the correct type corresponding to cmd when calling va_arg, and to carry the correct type through until making the syscall. however, this greatly increases binary size and does not seem to offer any benefits except formal correctness, so I'm holding off on that change for now. the minimal changes made in this patch are in preparation for addition of the x32 port, where the syscall macros need to know whether their arguments are pointers or integers in order to properly pass them to the 64-bit kernel.
2014-01-07fix const-correctness of argument to stimeRich Felker-2/+2
it's unclear what the historical signature for this function was, but semantically, the argument should be a pointer to const, and this is what glibc uses. correct programs should not be using this function anyway, so it's unlikely to matter.
2014-01-07fix signedness of pgoff argument to remap_file_pagesRich Felker-2/+2
both the kernel and glibc agree that this argument is unsigned; the incorrect type ssize_t came from erroneous man pages.
2014-01-07fix const-correctness in sigandset/sigorset argumentsRich Felker-4/+4
this change is consistent with the corresponding glibc functions and is semantically const-correct. the incorrect argument types without const seem to have been taken from erroneous man pages.
2014-01-07remove sys/sysctl.hRich Felker-17/+0
this functionality has essentially always been deprecated in linux, and was never supported by musl. the presence of the header was reported to cause some software to attempt to use the nonexistant function, so removing the header is the cleanest solution.
2014-01-07fix incorrect type for wd argument of inotify_rm_watchRich Felker-2/+2
this was wrong since the original commit adding inotify, and I don't see any explanation for it. not even the man pages have it wrong. it was most likely a copy-and-paste error.