| Commit message (Expand) | Author | Files | Lines |
|---|
| 2021-07-06 | math: fix fmaf not to depend on FE_TOWARDZERO | Szabolcs Nagy | 1 | -11/+10 |
| 2021-06-23 | fix TZ parsing logic for identifying POSIX-form strings•••previously, the contents of the TZ variable were considered a
candidate for a file/path name only if they began with a colon or
contained a slash before any comma. the latter was very sloppy logic
to avoid treating any valid POSIX TZ string as a file name, but it
also triggered on values that are not valid POSIX TZ strings,
including 3-letter timezone names without any offset.
instead, only treat the TZ variable as POSIX form if it begins with a
nonzero standard time name followed by +, -, or a digit.
also, special case GMT and UTC to always be treated as POSIX form
(with implicit zero offset) so that a stray file by the same name
cannot break software that depends on setting TZ=GMT or TZ=UTC.
| Rich Felker | 1 | -1/+13 |
| 2021-06-05 | riscv: rename __NR_fstatat __NR_newfstatat•••on riscv64 this syscall is called __NR_newfstatat
this helps the name match kernel UAPI for external
programs
| Khem Raj | 1 | -1/+1 |
| 2021-04-27 | remove return with expression in void function | Michael Forney | 1 | -1/+1 |
| 2021-04-20 | remove unnecessary cast for map_library return•••the function already returns (void *)
| Érico Nogueira | 1 | -1/+1 |
| 2021-04-20 | add pthread_getname_np function•••based on the pthread_setname_np implementation
| Érico Rolim | 2 | -0/+26 |
| 2021-04-20 | fix popen not to leak pipes from one child to another•••POSIX places an obscure requirement on popen which is like a limited
version of close-on-exec:
"The popen() function shall ensure that any streams from previous
popen() calls that remain open in the parent process are closed in
the new child process."
if the POSIX-future 'e' mode flag is passed, producing a pipe FILE
with FD_CLOEXEC on the underlying pipe, this requirement is
automatically satisfied. however, for applications which use multiple
concurrent popen pipes but don't request close-on-exec, fd leaks from
earlier popen calls to later ones could produce deadlock situations
where processes are waiting for a pipe EOF that will never happen.
to fix this, iterate through all open FILEs and add close actions for
those obtained from popen. this requires holding a lock on the open
file list across the posix_spawn call so that additional popen FILEs
are not created after the list is traversed. note that it's still
possible for another popen call to start and create its pipe while the
lock is held, but such pipes are created with O_CLOEXEC and only drop
close-on-exec status (when 'e' flag is omitted) under control of the
lock.
| Rich Felker | 1 | -0/+6 |
| 2021-04-20 | remove spurious lock in popen•••the newly allocated FILE * has not yet leaked to the application and
is only visible to stdio internals until popen returns. since we do
not change any fields of the structure observed by libc internals,
only the pipe_pid member, locking is not necessary.
| Rich Felker | 1 | -2/+0 |
| 2021-04-19 | define __STDC_UTF_{16,32}__ macros•••these macros are used to indicate that the implementation uses,
respectively, utf-16 and utf-32 encoding for char16_t and char32_t.
| Érico Nogueira | 1 | -0/+3 |
| 2021-04-16 | fix regression in dl_iterate_phdr reporting of modules with no TLS•••__tls_get_addr should not be called with an invalid TLS module id of
0. in practice it probably "works", returning the DTV length as if it
were a pointer, and the callback should probably not inspect
dlpi_tls_data in this case, but it's likely that some real-world
callbacks use a check on dlpi_tls_data being non-null, rather than on
dlpi_tls_modid being nonzero, to conclude that the module has TLS.
| Rich Felker | 1 | -1/+2 |
| 2021-04-16 | nscd: fall back gracefully on kernels without AF_UNIX support | Joakim Sindholt | 1 | -1/+9 |
| 2021-04-16 | mallocng/aligned_alloc: check for malloc failure•••With mallocng, calling posix_memalign() or aligned_alloc() will
SIGSEGV if the internal malloc() call returns NULL. This does not
occur with oldmalloc, which explicitly checks for allocation failure.
| Dominic Chen | 1 | -0/+3 |
| 2021-04-03 | make epoll_[p]wait a cancellation point•••this is a Linux-specific function and not covered by POSIX's
requirements for which interfaces are cancellation points, but glibc
makes it one and existing software relies on it being one.
at some point a review for similar functions that should be made
cancellation points should be done.
| Rich Felker | 1 | -2/+2 |
| 2021-03-26 | fix dl_iterate_phdr dlpi_tls_data reporting to match spec•••dl_iterate_phdr was wrongly reporting the address of the DSO's PT_TLS
image rather than the calling thread's instance of the TLS. the man
page, which is essentially normative for a nonstandard function of
this sort, clearly specifies the latter. it does not clarify where
exactly within/relative-to the image the pointer should point, but the
reasonable thing to do is match the ABI's DTP offset, and this seems
to be what other implementations do.
| Rich Felker | 2 | -2/+3 |
| 2021-03-15 | remove no-longer-needed special case handling in popen•••popen was special-casing the possibility (only possible when the
parent closed stdin and/or stdout) that the child's end of the pipe
was already on the final desired fd number, in which case there was no
way to get rid of its close-on-exec flag in the child. commit
6fc6ca1a323bc0b6b9e9cdc8fa72221ae18fe206 made this unnecessary by
implementing the POSIX-future requirement that dup2 file actions with
equal source and destination fd values remove the close-on-exec flag.
| Rich Felker | 1 | -16/+0 |
| 2021-03-15 | use internal malloc for posix_spawn file actions objects•••this makes it possible to perform actions on file actions objects with
a libc-internal lock held without creating lock order relationships
that are silently imposed on an application-provided malloc.
| Rich Felker | 1 | -0/+5 |
| 2021-03-05 | don't fail to map library/executable with zero-length segment maps•••reportedly the GNU linker can emit such segments, causing spurious
failure to load due to mmap with a length of zero producing EINVAL.
no action is required for such a load map (it's effectively a nop in
the program headers table) so just treat it as always successful.
| Rich Felker | 1 | -0/+1 |
| 2021-02-25 | suppress isascii() macro for C++•••analogous to commit a60457c84a4b59ab564d7f4abb660a70283ba98d.
| Érico Rolim | 1 | -0/+2 |
| 2021-02-22 | guard against compilers failing to handle setjmp specially by default•••since 4.1, gcc has had the __returns_twice__ attribute and has
required functions which return twice to carry it; however it's always
applied it automatically to known setjmp-like function names. clang
however does not do this reliably, at least not with -ffreestanding
and possibly under other conditions, resulting in silent emission of
wrong code.
since the symbol name setjmp is in no way special (setjmp is specified
as a macro that could expand to use any implementation-specific symbol
name or names), a compiler is justified not to do anything special
without further hints, and it's reasonable to do what we can to
provide such hints.
gcc 4.0.x and earlier do not recognize the attribute, so make use
conditional on __GNUC__ macros. clang and other gcc-like compilers
report (and have always reported) a later "GNUC" version so the
preprocessor conditional should function as desired for them as too.
undefine the internal macro after use so that nothing abuses it as a
public feature.
| Rich Felker | 1 | -3/+11 |
| 2021-02-15 | aarch64/bits/mman.h: add PROT_MTE from linux v5.10•••see
linux commit 9f3419315f3cdc41a7318e4d50ba18a592b30c8c
arm64: mte: Add PROT_MTE support to mmap() and mprotect()
| Szabolcs Nagy | 1 | -0/+1 |
| 2021-02-15 | aarch64/bits/hwcap.h: add HWCAP2_MTE from linux v5.10•••see
linux commit 3b714d24ef173f81c78af16f73dcc9b40428c803
arm64: mte: CPU feature detection and initial sysreg configuration
| Szabolcs Nagy | 1 | -0/+1 |
