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2018-06-22Add legacy ustat(2) syscall support for GCC GoustatA. Wilcox1-0/+8
2018-04-17abort: raise SIGABRT again if signal is ignoredA. Wilcox1-0/+18
POSIX requires that abort() gives the SIGABRT status to waitpid(3) and friends. If a signal handler is installed, and erroneously returns, then the status given to waitpid(3) is SIGSEGV instead of SIGABRT. This change gives another opportunity for the proper SIGABRT status to be given to any process monitoring this one's process, before we fall back to a_crash(), which should be sufficient.
2018-04-17time: C11 visibility fixesA. Wilcox2-3/+6
The timespec_get function, and TIME_* macros, are only in C11. Since musl is compiled with -std=c99, TIME_UTC is unavailable in the timespec_get implementation, so we use the raw value 1.
2018-04-17stdlib: Ensure C11 fns are only visible in C11A. Wilcox1-0/+4
aligned_alloc, at_quick_exit, and quick_exit are new in C11 and C++11. Only make these symbols visible in those versions, to avoid polluting the namespace of C99 and POSIX 2008 sources.
2018-04-17stdlib: Move mkostemp to _GNU_SOURCE/_BSD_SOURCEA. Wilcox1-1/+1
This is not a POSIX function, it should not be visible there.
2018-04-12pathconf: add _PC_TIMESTAMP_RESOLUTIONA. Wilcox2-1/+3
Right now, this is a worst-case assumption; some kernels may actually have a value of 100000 here (100 Hz timers). This is considered the easiest implementation. This is required to be present in <unistd.h>.
2018-04-11confstr: Add _CS_POSIX_V7_THREADS_*A. Wilcox2-1/+3
This is used to determine what CFLAGS/LDFLAGS are needed to enable compilation with threads on musl. We don't have any special ones, so just return an empty string. This is required to be present in <unistd.h>.
2018-04-11sysconf: Add _SC_XOPEN_UUCPA. Wilcox2-0/+2
We definitely don't /support/ UUCP, so return -1 for it. But this value is required to be present in <unistd.h>.
2018-04-09fix wrong result in casin and many related complex functionsRich Felker3-3/+6
the factor of -i noted in the comment at the top of casin.c was omitted from the actual code, yielding a result rotated 90 degrees and propagating into errors in other functions defined in terms of casin. implement multiplication by -i as a rotation of the real and imaginary parts of the result, rather than by actual multiplication, since the latter cannot be optimized without knowledge that the operand is finite. here, the rotation is the actual intent, anyway.
2018-04-07implement wcsftime padding specifier extensionsSamuel Holland1-3/+5
Commit 8a6bd7307da3fc4d08dd6a9277b611ccb4971354 added support for padding specifier extensions to strftime, but did not modify wcsftime. In the process, it added a parameter to __strftime_fmt_1 in strftime.c, but failed to update the prototype in wcsftime.c. This was found by compiling musl with LTO: src/time/wcsftime.c:7:13: warning: type of '__strftime_fmt_1' does \ not match original declaration [-Wlto-type-mismatch] Fix the prototype of __strftime_fmt_1 in wcsftime.c, and generate the 'pad' argument the same way as it is done in strftime.
2018-04-05prevent bypass of guarantee that suids start with fd 0/1/2 openRich Felker1-0/+2
it was reported by Erik Bosman that poll fails without setting revents when the nfds argument exceeds the current value for RLIMIT_NOFILE, causing the subsequent open calls to be bypassed. if the rlimit is either 1 or 2, this leaves fd 0 and 1 potentially closed but openable when the application code is reached. based on a brief reading of the poll syscall documentation and code, it may be possible for poll to fail under other attacker-controlled conditions as well. if it turns out these are reasonable conditions that may happen in the real world, we may have to go back and implement fallbacks to probe each fd individually if poll fails, but for now, keep things simple and treat all poll failures as fatal.
2018-04-02fix fmaf wrong resultSzabolcs Nagy1-1/+1
if double precision r=x*y+z is not a half way case between two single precision floats or it is an exact result then fmaf returns (float)r. however the exactness check was wrong when |x*y| < |z| and could cause incorrectly rounded result in nearest rounding mode when r is a half way case. fmaf(-0x1.26524ep-54, -0x1.cb7868p+11, 0x1.d10f5ep-29) was incorrectly rounded up to 0x1.d117ap-29 instead of 0x1.d1179ep-29. (exact result is 0x1.d1179efffffffecp-29, r is 0x1.d1179fp-29)
2018-03-28fix default feature profile in tar.hRich Felker1-0/+2
commit d93c0740d86aaf7043e79b942a6c0b3f576af4c8 added use of feature test macros without including features.h, causing a definition that should be exposed in the default profile, TSVTX, to appear only when _XOPEN_SOURCE or higher is explicitly defined.
2018-03-24adjust makefile target-specific CFLAGS rules to be more robust & completeRich Felker1-11/+8
previously, MEMOPS_SRCS failed to include arch-specific replacement files for memcpy, etc., omitting CFLAGS_MEMOPS and thereby potentially causing build failure if an arch provided C (rather than asm) replacements for these files. instead of trying to explicitly include all the files that might have arch replacements, which is prone to human error, extract final names to be used out of $(LIBC_OBJS), where the rules for arch replacements have already been applied. do the same for NOSSP_OBJS, using CRT_OBJS and LDSO_OBJS rather than repeating ourselves with $(wildcard...) and explicit pathnames again.
2018-03-24fix out-of-tree build of crt files with stack protector enabledRich Felker1-1/+1
the makefile logic for these files was wrong in the out-of-tree case, but it likely only affected the "all" level of stack protector.
2018-03-12explicitly use signed keyword to define intNN_t and derivative typesRich Felker1-4/+4
standing alone, both the signed and int keywords identify the same type, a (signed) int. however the C language has an exception where, when the lone keyword int is used to declare a bitfield, it's implementation-defined whether the bitfield is signed or unsigned. C11 footnote 125 extends this implementation-definedness to typedefs, and DR#315 extends it to other integer types (for which support with bitfields is implementation-defined). while reasonable ABIs (all the ones we support) define bitfields as signed by default, GCC and compatible compilers offer an option -funsigned-bitfields to change the default. while any signed types defined without explicit use of the signed keyword are affected, the stdint.h types, especially intNN_t, have a natural use in bitfields. ensure that bitfields defined with these types always have the correct signedness regardless of compiler & flags used. see also GCC PR 83294.
2018-03-10fix minor namespace issues in termios.hRich Felker6-0/+12
the output delay features (NL*, CR*, TAB*, BS*, and VT*) are XSI-shaded. VT* is in the V* namespace reservation but the rest need to be suppressed in base POSIX namespace. unfortunately this change introduces feature test macro checks into another bits header. at some point these checks should be simplified by having features.h handle the "FTM X implies Y" relationships.
2018-03-10remove spurious const keyword in sigqueue declarationRich Felker1-1/+1
this must have been taken from POSIX without realizing that it was meaningless. the resolution to Austin Group issue #844 removed it from the standard.
2018-03-10fix minor namespace issue in unistd.hRich Felker1-2/+1
the F_* macros associated with the lockf function are XSI-shaded (like the lockf function itself) and should only be exposed when the function is.
2018-03-10fix minor namespace issue in tar.hRich Felker1-0/+2
TSVTX is XSI-shaded.
2018-03-10fix minor namespace issues in limits.hRich Felker1-5/+10
PAGE_SIZE, NZERO, and NL_LANGMAX are XSI-shaded.
2018-03-10use PAGESIZE rather than PAGE_SIZE in user.h bitsRich Felker4-8/+8
align with commit c9c2cd3e6955cb1d57b8be01d4b072bf44058762.
2018-03-10reverse definition dependency between PAGESIZE and PAGE_SIZERich Felker7-8/+8
PAGESIZE is actually the version defined in POSIX base, with PAGE_SIZE being in the XSI option. use PAGESIZE as the underlying definition to facilitate making exposure of PAGE_SIZE conditional.
2018-03-07fix nl_langinfo_l(CODESET, loc) reporting wrong locale's valueRich Felker1-1/+1
use of MB_CUR_MAX encoded a hidden dependency on the currently active locale for the calling thread, whereas nl_langinfo_l is supposed to report for the locale passed as an argument.
2018-02-25add public interface headers to implementation filesRich Felker6-0/+11
general policy is that all source files defining a public API or an ABI mechanism referenced by a public header should include the public header that declares the interface, so that the compiler or analysis tools can check the consistency of the declarations. Alexander Monakov pointed out a number of violations of this principle a few years back. fix them now.
2018-02-24fix aliasing violations in fgetpos/fsetposRich Felker3-2/+3
add a member of appropriate type to the fpos_t union so that accesses are well-defined. use long long instead of off_t since off_t is not always exposed in stdio.h and there's no namespace-clean alias for it. access is still performed using pointer casts rather than by naming the union member as a matter of style; to the extent possible, the naming of fields in opaque types defined in the public headers is not treated as an API contract with the implementation. access via the pointer cast is valid as long as the union has a member of matching type.
2018-02-24use idiomatic safe form for FUNLOCK macroRich Felker1-1/+1
previously this macro used an odd if/else form instead of the more idiomatic do/while(0), making it unsafe against omission of trailing semicolon. the omission would make the following statement conditional instead of producing an error.
2018-02-24in vswprintf, initialize the FILE rather than memset-and-assignRich Felker1-9/+8
this is the idiom that's used elsewhere and should be more efficient or at least no worse.
2018-02-24remove unused MIN macro from getdelim source fileRich Felker1-2/+0
2018-02-24remove useless null check before call to free in fcloseRich Felker1-1/+1
2018-02-24remove useless and confusing parentheses in stdio __towrite functionRich Felker1-1/+1
they seem to be relics of e3cd6c5c265cd481db6e0c5b529855d99f0bda30 where this code was refactored from a check that previously masked against (F_ERR|F_NOWR) instead of just F_NOWR.
2018-02-24avoid use of readv syscall in __stdio_read backend when not neededRich Felker1-1/+2
formally, calling readv with a zero-length first iov component should behave identically to calling read on just the second component, but presence of a zero-length iov component has triggered bugs in some kernels and performs significantly worse than a simple read on some file types.
2018-02-24consistently return number of bytes read from stdio read backendRich Felker2-2/+2
the stdio FILE read backend's return type is size_t, not ssize_t, and all of the special (non-fd-backed) FILE types already return the number of bytes read (zero) on error or eof. only __stdio_read leaked a syscall error return into its return value. fread had a workaround for this behavior going all the way back to the original check-in. remove the workaround since it's no longer needed.
2018-02-24remove obfuscated flags bit-twiddling logic in __stdio_readRich Felker1-1/+1
replace with simple conditional that doesn't rely on assumption that cnt is either 0 or -1.
2018-02-24fix getopt wrongly treating colons in optstring as valid option charsRich Felker1-1/+1
the ':' in optstring has special meaning as a flag applying to the previous option character, or to getopt's error handling behavior when it appears at the beginning. don't also accept a "-:" option based on its presence.
2018-02-23add getentropy functionRich Felker2-0/+32
based loosely on patch by Hauke Mehrtens; converted to wrap the public API of the underlying getrandom function rather than direct syscalls, so that if/when a fallback implementation of getrandom is added it will automatically get picked up by getentropy too.
2018-02-22add getrandom syscall wrapperHauke Mehrtens2-0/+26
This syscall is available since Linux 3.17 and was also implemented in glibc in version 2.25 using the same interfaces.
2018-02-22aarch64: add sve_context struct and related defines from linux v4.15Szabolcs Nagy1-0/+39
signal context definitions for scalable vector extension new in commit d0b8cd3187889476144bd9b13bf36a932c3e7952
2018-02-22elf.h: add DT_SYMTAB_SHNDXSzabolcs Nagy1-1/+2
it's a recent addition to elf gabi: http://sco.com/developers/gabi/latest/revision.html based on discussions at https://sourceware.org/bugzilla/show_bug.cgi?id=15835
2018-02-22elf.h: syncronize DF_1_ flags with binutilsSzabolcs Nagy1-0/+2
DF_1_STUB and DF_1_PIE were added in binutils-gdb commit 5c383f026242d25a3c21fdfda42e5ca218b346c8
2018-02-22elf.h: update NT_* coredump elf notes for linux v4.15Szabolcs Nagy1-0/+21
NT_ARM_SVE and NT_S390_RI_CB are new in linux commits 43d4da2c45b2f5d62f8a79ff7c6f95089bb24656 and 262832bc5acda76fd8f901d39f4da1121d951222 the rest are older. musl missed NT_PRFPREG because it followed the glibc api: https://sourceware.org/bugzilla/show_bug.cgi?id=14890
2018-02-22elf.h: add PPC64_OPT_LOCALENTRYSzabolcs Nagy1-0/+1
allows calling extern functions without saving r2, for details see glibc commit 0572433b5beb636de1a49ec6b4fdab830c38cdc5
2018-02-22elf.h: add AT_* auxval macros for cache geometrySzabolcs Nagy1-0/+8
AT_L1I_*, AT_L1D_*, AT_L2_* and AT_L3_* were added in linux v4.11 for powerpc in commit 98a5f361b8625c6f4841d6ba013bbf0e80d08147.
2018-02-22sys/prctl.h: add new PR_SVE_* macros from linux v4.15Szabolcs Nagy1-0/+6
PR_SVE_SET_VL and PR_SVE_GET_VL controls are new in linux commit 2d2123bc7c7f843aa9db87720de159a049839862 related PR_SVE_* macros were added in 7582e22038a266444eb87bc07c372592ad647439
2018-02-22aarch64: update hwcap.h for linux v4.15Szabolcs Nagy1-0/+6
HWCAP_SVE is new in linux commit 43994d824e8443263dc98b151e6326bf677be52e HWCAP_SHA3, HWCAP_SM3, HWCAP_SM4, HWCAP_ASIMDDP and HWCAP_SHA512 are new in f5e035f8694c3bdddc66ea46ecda965ee6853718
2018-02-22arm: add get_tls syscall from linux v4.15Szabolcs Nagy1-0/+1
for systems without tp register or kuser helper, new in linux commit 8fcd6c45f5a65621ec809b7866a3623e9a01d4ed
2018-02-22powerpc: update hwcap.h for linux v4.15Szabolcs Nagy2-0/+6
PPC_FEATURE2_HTM_NO_SUSPEND is new in linux commit cba6ac4869e45cc93ac5497024d1d49576e82666 PPC_FEATURE2_DARN and PPC_FEATURE2_SCV were new in v4.12 in commit a4700a26107241cc7b9ac8528b2c6714ff99983d
2018-02-22s390x: add s390_sthyi system call from v4.15Szabolcs Nagy1-0/+1
to store hypervisor information, added in linux commit 3d8757b87d7fc15a87928bc970f060bc9c6dc618
2018-02-22netinet/in.h: add new IPV6_FREEBIND from linux v4.15Szabolcs Nagy1-0/+1
new socekt option for AF_INET6 SOL_RAW sockets, added in linux commit 84e14fe353de7624872e582887712079ba0b2d56
2018-02-22netinet/tcp.h: add TCP_* socket options from linux v4.15Szabolcs Nagy1-0/+2
TCP_FASTOPEN_KEY is new in 1fba70e5b6bed53496ba1f1f16127f5be01b5fb6 TCP_FASTOPEN_NO_COOKIE is new in 71c02379c762cb616c00fd5c4ed253fbf6bbe11b
generated by cgit v1.2.3-60-g2f50 (git 2.42.0) at 2024-05-10 12:00:40 +0000