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2014-03-11move struct semid_ds to from shared sys/sem.h to bitsRich Felker-0/+16
the definition was found to be incorrect at least for powerpc, and fixing this cleanly requires making the definition arch-specific. this will allow cleaning up the definition for other archs to make it more specific, and reversing some of the ugliness (time_t hacks) introduced with the x32 port. this first commit simply copies the existing definition to each arch without any changes. this is intentional, to make it easier to review changes made on a per-arch basis.
2014-02-23sys/shm.h: move arch specific structs to bits/rofl0r-0/+11
2014-01-08add IUTF8 to termios.h on archs that were missing itRich Felker-0/+1
2014-01-08fix namespace violations in termios.h, at least mostlyRich Felker-8/+7
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.
2013-11-23add O_TMPFILE flag, new in linux 3.11Szabolcs Nagy-0/+1
definition in linux: #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) where __O_TMPFILE and O_DIRECTORY are arch specific
2013-09-26add missing i386 syscall numbersRich Felker-0/+10
somehow the range 335-339 was missed when updating the file.
2013-08-18remove the __mxcsr member from fenv_t on i386 to follow the glibc abiSzabolcs Nagy-1/+0
in the previous commit sse fenv support was added, but there is no need to save mxcsr (sse fenv register) so fix the abi incompatibility with glibc.
2013-07-24change jmp_buf to share an underlying type and struct tag with sigjmp_bufRich Felker-1/+1
this is necessary to meet the C++ ABI target. alternatives were considered to avoid the size increase for non-sig jmp_buf objects, but they seemed to have worse properties. moreover, the relative size increase is only extreme on x86[_64]; one way of interpreting this is that, if the size increase from this patch makes jmp_buf use too much memory, then the program was already using too much memory when built for non-x86 archs.
2013-07-22fix regression in size of nlink_t (broken stat struct) on x86_64Rich Felker-0/+1
rather than moving nlink_t back to the arch-specific file, I've added a macro _Reg defined to the canonical type for register-size values on the arch. this is not the same as _Addr for (not-yet-supported) 32-on-64 pseudo-archs like x32 and mips n32, so a new macro was needed.
2013-07-22change wint_t to unsignedRich Felker-1/+1
aside from the obvious C++ ABI purpose for this change, it also brings musl into alignment with the compiler's idea of the definition of wint_t (use in -Wformat), and makes the situation less awkward on ARM, where wchar_t is unsigned. internal code using wint_t and WEOF was checked against this change, and while a few cases of storing WEOF into wchar_t were found, they all seem to operate properly with the natural conversion from unsigned to signed.
2013-07-22refactor headers, especially alltypes.h, and improve C++ ABI compatRich Felker-149/+41
the arch-specific bits/alltypes.h.sh has been replaced with a generic alltypes.h.in and minimal arch-specific bits/alltypes.h.in. this commit is intended to have no functional changes except: - exposing additional symbols that POSIX allows but does not require - changing the C++ name mangling for some types - fixing the signedness of blksize_t on powerpc (POSIX requires signed) - fixing the limit macros for sig_atomic_t on x86_64 - making dev_t an unsigned type (ABI matching goal, and more logical) in addition, some types that were wrongly defined with long on 32-bit archs were changed to int, and vice versa; this change is non-functional except for the possibility of making pointer types mismatch, and only affects programs that were using them incorrectly, and only at build-time, not runtime. the following changes were made in the interest of moving non-arch-specific types out of the alltypes system and into the headers they're associated with, and also will tend to improve application compatibility: - netdb.h now includes netinet/in.h (for socklen_t and uint32_t) - netinet/in.h now includes sys/socket.h and inttypes.h - sys/resource.h now includes sys/time.h (for struct timeval) - sys/wait.h now includes signal.h (for siginfo_t) - langinfo.h now includes nl_types.h (for nl_item) for the types in stdint.h: - types which are of no interest to other headers were moved out of the alltypes system. - fast types for 8- and 64-bit are hard-coded (at least for now); only the 16- and 32-bit ones have reason to vary by arch. and the following types have been changed for C++ ABI purposes; - mbstate_t now has a struct tag, __mbstate_t - FILE's struct tag has been changed to _IO_FILE - DIR's struct tag has been changed to __dirstream - locale_t's struct tag has been changed to __locale_struct - pthread_t is defined as unsigned long in C++ mode only - fpos_t now has a struct tag, _G_fpos64_t - fsid_t's struct tag has been changed to __fsid_t - idtype_t has been made an enum type (also required by POSIX) - nl_catd has been changed from long to void * - siginfo_t's struct tag has been removed - sigset_t's has been given a struct tag, __sigset_t - stack_t has been given a struct tag, sigaltstack - suseconds_t has been changed to long on 32-bit archs - [u]intptr_t have been changed from long to int rank on 32-bit archs - dev_t has been made unsigned summary of tests that have been performed against these changes: - nsz's libc-test (diff -u before and after) - C++ ABI check symbol dump (diff -u before, after, glibc) - grepped for __NEED, made sure types needed are still in alltypes - built gcc 3.4.6
2013-07-19change uid_t, gid_t, and id_t to unsigned typesRich Felker-3/+3
this change is both to fix one of the remaining type (and thus C++ ABI) mismatches with glibc/LSB and to allow use of the full range of uid and gid values, if so desired. passwd/group access functions were not prepared to deal with unsigned values, so they too have been fixed with this commit.
2013-06-25respect iso c namespace in stdio.h and wchar.h regarding va_listRich Felker-0/+2
despite declaring functions that take arguments of type va_list, these headers are not permitted by the c standard to expose the definition of va_list, so an alias for the type must be used. the name __isoc_va_list was chosen to convey that the purpose of this alternate name is for iso c conformance, and to avoid the multitude of names which gcc mangles with its hideous "fixincludes" monstrosity, leading to serious header breakage if these "fixes" are run.
2013-05-26Merge remote-tracking branch 'nsz/review'Rich Felker-3/+3
2013-05-26fix ioctl _IOR, _IOW, etc macros to avoid signed overflow (2<<30)Szabolcs Nagy-3/+3
2013-05-23change underlying type of clock_t to be uniform and match ABIRich Felker-1/+1
previously we were using an unsigned type on 32-bit systems so that subtraction would be well-defined when it wrapped, but since wrapping is non-conforming anyway (when clock() overflows, it has to return -1) the only use of unsigned would be to buy a little bit more time before overflow. this does not seem worth having the type vary per-arch (which leads to more arch-specific bugs) or disagree with the ABI musl (mostly) follows.
2013-05-17add FLT_TRUE_MIN, etc. macros from C11Rich Felker-0/+1
there was some question as to how many decimal places to use, since one decimal place is always sufficient to identify the smallest denormal uniquely. for now, I'm following the example in the C standard which is consistent with the other min/max macros we already had in place.
2013-04-04fix type issues in stdint.h so underlying types of 64-bit types match ABIRich Felker-0/+3
2013-04-04eliminate bits/wchar.hRich Felker-4/+0
the preprocessor can reliably determine the signedness of wchar_t. L'\0' is used for 0 in the expressions so that, if the underlying type of wchar_t is long rather than int, the promoted type of the expression will match the type of wchar_t.
2013-04-02re-add useconds_trofl0r-0/+1
this type was removed back in 5243e5f1606a9c6fcf01414e , because it was removed from the XSI specs. however some apps use it. since it's in the POSIX reserved namespace, we can expose it unconditionally.
2013-04-01add syscall numbers for the new kcmp and finit_module syscallsSzabolcs Nagy-0/+4
and remove syscall todos from microblaze
2013-03-23add deprecated SIGIOT alias for SIGABRTRich Felker-0/+1
reportedly some programs (e.g. showkeys in the kbd package) use it.
2013-03-04fix types for wctype_t and wctrans_tRich Felker-2/+2
wctype_t was incorrectly "int" rather than "long" on x86_64. not only is this an ABI incompatibility; it's also a major design flaw if we ever wanted wctype_t to be implemented as a pointer, which would be necessary if locales support custom character classes, since int is too small to store a converted pointer. this commit fixes wctype_t to be unsigned long on all archs, matching the LSB ABI; this change does not matter for C code, but for C++ it affects mangling. the same issue applied to wctrans_t. glibc/LSB defines this type as const __int32_t *, but since no such definition is visible, I've just expanded the definition, int, everywhere. it would be nice if these types (which don't vary by arch) could be in wctype.h, but the OB XSI requirement in POSIX that wchar.h expose some types and functions from wctype.h precludes doing so. glibc works around this with some hideous hacks, but trying to duplicate that would go against the intent of musl's headers.
2013-01-12add missing mmap options and madvices to bits/mman.h based on linux headersSzabolcs Nagy-0/+7
2013-01-12add missing EXTPROC flag to bits/termios.hSzabolcs Nagy-0/+1
mips and powerpc already had this termios flag defined
2013-01-12add missing F_GETOWNER_UIDS flag to bits/fcntl.hSzabolcs Nagy-0/+2
2013-01-12add missing EHWPOISON to bits/errno.hSzabolcs Nagy-0/+1
it was already defined for mips, but was missing from other archs
2012-12-06move signal.h REG_* macros under _GNU_SOURCE protectionRich Felker-20/+22
they were accidentally exposed under just baseline POSIX, which is a big namespace pollution issue. thankfully glibc only exposes them under _GNU_SOURCE, not under any of its other options, so omitting the pollution in the default _BSD_SOURCE profile does not hurt application compatibility at all.
2012-12-06bits/signal.h: add register names for x86(_64)rofl0r-0/+21
glibc exposes them from ucontext.h. since that header includes signal.h, it is safe to put them into bits/signal.h, if _GNU_SOURCE is defined.
2012-12-06add more arch-specific MAP_ macros to bits/mman.hrofl0r-0/+4
these are also needed by qemu.
2012-12-06add MAP_NORESERVE to bits/mman.hrofl0r-0/+1
this is needed for qemu, and since it differs for each arch it can't be circumvented easily by using a macro in CFLAGS.
2012-11-25fixup mcontext stuff to expost gregset_t/fpregset_t as appropriateRich Felker-4/+5
2012-11-25make sys/procfs.h mostly work on most archsRich Felker-4/+7
these structures are purely for use by trace/debug tools and tools working with core files. the definition of fpregset_t, which was previously here, has been removed because it was wrong; fpregset_t should be the type used in mcontext_t, not the type used in ptrace/core stuff.
2012-11-23sigcontext/mcontext cleanup for arch-specific bitsRich Felker-22/+26
with these changes, the members/types of mcontext_t and related stuff should closely match the glibc definitions. unlike glibc, however, the definitions here avoid using typedefs as much as possible and work directly with the underlying types, to minimize namespace pollution from signal.h in the default (_BSD_SOURCE) profile. this is a first step in improving compatibility with applications which poke at context/register information -- mainly debuggers, trace utilities, etc. additional definitions in ucontext.h and other headers may be needed later. if feature test macros are used to request a conforming namespace, mcontext_t is replaced with an opaque structure of the equivalent size and alignment; conforming programs cannot examine its contents anyway.
2012-11-23fix up leftover, incorrect NSIG definitions in arch-specific signal.hRich Felker-1/+0
2012-11-21add back NSIG, removed from powerpc in last commit, but for all archsRich Felker-0/+2
unlike the previous definition, NSIG/_NSIG is supposed to be one more than the highest signal number. adding this will allow simplifying libc-internal code that makes signal-related syscalls, which can be done as a later step. some apps might use it too; while this usage is questionable, it's at least not insane.
2012-11-18fix breakage from introducing bits header for sys/io.hRich Felker-3/+0
apparently some other archs have sys/io.h and should not break just because they don't have the x86 port io functions. provide a blank bits/io.h everywhere for now.
2012-11-18add port io functions to sys/io.hRich Felker-0/+80
based on proposal by Isaac Dunham. nonexistance of bits/io.h will cause inclusion of sys/io.h to produce an error on archs that are not supposed to have it. this is probably the desired behavior, but the error message may be a bit unusual.
2012-11-18fcntl.h: O_SEARCH was missing for powerpcrofl0r-3/+0
put some macros that do not differ between architectures in the main header and remove from bits. restructure mips header so it has the same structure as the others.
2012-09-22fix broken semctl on systems that don't use IPC_64 flagRich Felker-0/+2
not tested on mips and arm; they may still be broken. x86_64 should be ok now.
2012-09-15add O_EXEC open modeRich Felker-0/+1
the linux O_PATH mode provides the necessary semantics for both the O_SEARCH and O_EXEC modes defined and required by POSIX 2008.
2012-09-13add O_PATH/O_SEARCH support to fcntl.hRich Felker-0/+2
I'm not 100% sure that Linux's O_PATH meets the POSIX requirements for O_SEARCH, but it seems very close if not perfect. and old kernels ignore it, so O_SEARCH will still work as desired as long as the caller has read permissions to the directory.
2012-09-08syscall organization overhaulRich Felker-286/+0
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, accept4, setns, and dup3 syscalls (linux extensions)Rich Felker-0/+3
based on patch by Justin Cormack
2012-09-02avoid "inline" in public headers for strict c89 compatibilityRich Felker-14/+14
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.
2012-08-10use int instead of long for ptrdiff_t on all 32-bit archsRich Felker-1/+1
this is needed to match the underlying "ABI" standards. it's not really an ABI issue since the binary representations are the same, but having the wrong type can lead to errors when the type arising from a difference-of-pointers expression does not match the defined type of ptrdiff_t. most of the problems affect C++, not C.
2012-08-09add defines for number of sigset_t bytes syscalls expectRich Felker-0/+2
yet another gratuitous mips incompatibility...
2012-07-12workaround another sendmsg kernel bug on 64-bit machinesRich Felker-0/+7
the kernel wrongly expects the cmsg length field to be size_t instead of socklen_t. in order to work around the issue, we have to impose a length limit and copy to a local buffer. the length limit should be more than sufficient for any real-world use; these headers are only used for passing file descriptors and permissions between processes over unix sockets.
2012-07-03jmp_buf overhaul fixing several issuesRich Felker-1/+1
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.
2012-06-23update syscall defs to latest kernel onesRich Felker-0/+16
patch submitted by Kristian L. <email@thexception.net>