Commit Graph

5560 Commits

Author SHA1 Message Date
Adhemerval Zanella
720480934a linux: Consolidate brk implementation
It removes all the arch-specific assembly implementation.  The
outliers are alpha, where its kernel ABI explict return -ENOMEM
in case of failure; and i686, where it can't use
"call *%gs:SYSINFO_OFFSET" during statup in static PIE.

Also some ABIs exports an additional ___brk_addr symbol and to
handle it an internal HAVE_INTERNAL_BRK_ADDR_SYMBOL is added.

Checked on x86_64-linux-gnu, i686-linux-gnu, adn with builsd for
the affected ABIs.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-12-10 17:42:37 -03:00
Andreas Schwab
b5eeca8cfd Fix parsing of /sys/devices/system/cpu/online (bug 25859)
The file contains comma-separated ranges, not spaces.
2020-12-09 15:32:29 +01:00
H.J. Lu
088e962537 x86: Rename readelflib.c
Rename linux/i386/readelflib.c to linux/x86/readelflib.c and remove
x86_64/readelflib.c.
2020-12-06 06:38:09 -08:00
Adhemerval Zanella
f147616d68 Revert "linux: Move xmknod{at} to compat symbols"
This reverts commit 81b83ff61f to move
__xmknod{at} back to default symbols.  ABIs with default symbol version
of 2.33 or newer (such as riscv32) continue to just provide the mknod*
symbols.

The idea is to not force static libraries built against old glibc
to update against new glibcs (since they reference the the
xmknod{at} symbols).

Checked on x86_64-linux-gnu and i686-linux-gnu.
2020-12-02 14:45:22 -03:00
Adhemerval Zanella
22edf4d4b2 Revert "linux: Move {f}xstat{at} to compat symbols"
This reverts commit 20b39d5946 to move
{f}xstat{at} back to default symbols.  ABIs with default symbol version
of 2.33 or newer (such as riscv32) continue to just provide the stat
symbols.

The idea is to not force static libraries built against old glibc
to update against new glibcs (since they reference the old
{f}xstat{at} symbols).

Checked on x86_64-linux-gnu and i686-linux-gnu.
2020-12-02 14:45:22 -03:00
Adhemerval Zanella
9ff2674ef8 sh: Add sh4 fpu Implies folder
The commit 605f38177d (sh: Split BE/LE abilist) did not take in
consideration the SH4 fpu support.

Checked with a build for sh4-linux-gnu and manually checked that
the implementations at sysdeps/sh/sh4/fpu/ are selected.

John Paul Adrian Glaubitz also confirmed it fixes the build issues
he encontered.
2020-11-27 09:29:35 -03:00
Lukasz Majewski
7ed2b6921f nanosleep: Pass NULL when rem == NULL on ports with __TIMESIZE != 64
On ports with __TIMESIZE != 64 the remaining time argument always receives
pointer to struct __timespec64 instance. This is the different behavior
when compared to 64 bit versions of clock_nanosleep and nanosleep
functions, which receive NULL.

To avoid any potential issues, we also pass NULL when *rem pointer is
NULL.

Reported-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-11-14 22:12:40 +01:00
Lukasz Majewski
eb60eda2b9 y2038: Convert thrd_sleep to support 64 bit time
The thrd_sleep function has been converted to support 64 bit time.
It was also necessary to provide Linux specific copy of it to avoid
problems on i686-gnu (i.e. HURD) port, which is not providing
clock_nanosleep() supporting 64 bit time.

The thrd_sleep is a wrapper on POSIX threads to provide C11 standard
threads interface. It directly calls __clock_nanosleep64().

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-11-14 22:11:41 +01:00
Lukasz Majewski
b0c0ad4d54 y2038: Convert mtx_timedlock to support 64 bit time
The mtx_timedlock function has been converted to support 64 bit time.
It was also necessary to provide Linux specific copy of it to avoid
problems on i686-gnu (i.e. HURD) port, which is not providing
pthread_mutex_timedlock() supporting 64 bit time.

The mtx_timedlock is a wrapper on POSIX threads to provide C11 standard
threads interface. It directly calls __pthread_mutex_timedlock64().

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-11-14 22:10:31 +01:00
Lukasz Majewski
1f1a4847a4 y2038: Convert cnd_timedwait to support 64 bit time
The cnd_timedwait function has been converted to support 64 bit time.
It was also necessary to provide Linux specific copy of it to avoid
problems on i686-gnu (i.e. HURD) port, which is not providing
pthread_cond_timedwait() supporting 64 bit time.

Moreover, a linux specific copy of thrd_priv.h header file has been
added as well.

The cnd_timedwait is a wrapper on POSIX threads to provide C11 standard
threads interface. It directly calls __pthread_cond_timedwait64().

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-11-14 22:09:43 +01:00
John David Anglin
a24f414ba1 Remove obsolete defines for HPUX support from fcntl.h and update O_NONBLOCK. 2020-11-13 16:42:11 +00:00
Adhemerval Zanella
01bd62517c Remove tls.h inclusion from internal errno.h
The tls.h inclusion is not really required and limits possible
definition on more arch specific headers.

This is a cleanup to allow inline functions on sysdep.h, more
specifically on i386 and ia64 which requires to access some tls
definitions its own.

No semantic changes expected, checked with a build against all
affected ABIs.
2020-11-13 12:59:19 -03:00
Florian Weimer
26f7c72a99 nptl: Eliminate <smp.h> and __is_smp
Most systems are SMP, so optimizing for the UP case is no longer
approriate.  A dynamic check based on the kernel identification
has been only implemented for i386 anyway.

To disable adaptive mutexes on sh, define DEFAULT_ADAPTIVE_COUNT
as zero for this architecture.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-11-13 15:20:10 +01:00
Maximilian Krüger
d2d714b9fc Use O_CLOEXEC in sysconf [BZ #26791]
If sysconf is used in multithreaded processes, various filedescriptors
may leak due to missing O_CLOEXEC.  This commit adds the flag.
2020-11-11 12:15:21 +01:00
Zong Li
15b38ffc10 riscv: Get cache information through sysconf
Add support to query cache information on RISC-V through sysconf()
function. The cache information had been added in AUX vector of RISC-V
architecture in Linux kernel v.5.10-rc1.
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-11-10 14:43:49 -05:00
Adhemerval Zanella
75a193b761 linux: Allow adjtime with NULL argument [BZ #26833]
The adjtime interface allows return the amount of time remaining
from any previous adjustment that has not yet been completed by
passing a NULL as first argument.  This was introduced with y2038
support 0308077e3a.

Checked on i686-linux-gnu.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-11-09 11:19:35 -03:00
Lukasz Majewski
bb0719a80d msg: Remove redundant #include <sys/msg.h> header
The #include <sys/msg.h> is redundant as we do not use message specific
types for issuing syscalls to handle msg and shm. Only msgctl requires
this header.

Build tests:
./src/scripts/build-many-glibcs.py glibcs
2020-11-04 11:34:58 +01:00
Adhemerval Zanella
641a124845 Hurd: Fix ftime build
It does not provide __clock_gettime64, the ftime y2038 support is
moved to a Linux specific implementation.

Checked with a build for i686-linux-gnu and on x86_64-linux and
i686-linux-gnu.
2020-10-27 16:20:45 -03:00
Joseph Myers
b94cc191e0 Add IP_RECVERR_RFC4884 and IPV6_RECVERR_RFC4884 from Linux 5.9.
Add the new constants IP_RECVERR_RFC4884 and IPV6_RECVERR_RFC4884 from
Linux 5.9 to bits/in.h.

Tested for x86_64.
2020-10-27 17:42:34 +00:00
Adhemerval Zanella
30a0b167d3 Reinstate ftime and add deprecate message on ftime usage
This patch revert "Move ftime to a compatibility symbol" (commit
14633d3e56).

Checked on x86_64-linux-gnu and i686-linux-gnu.
2020-10-27 09:54:13 -03:00
Joseph Myers
6f21b0c5ed Update kernel version to 5.9 in tst-mman-consts.py.
This patch updates the kernel version in the test tst-mman-consts.py
to 5.9.  (There are no new MAP_* constants covered by this test in 5.9
that need any other header changes.)

Tested with build-many-glibcs.py.
2020-10-26 16:40:50 +00:00
Joseph Myers
dac8713629 Update syscall lists for Linux 5.9.
Linux 5.9 has one new syscall, close_range.  Update syscall-names.list
and regenerate the arch-syscall.h headers with build-many-glibcs.py
update-syscalls.

Tested with build-many-glibcs.py.
2020-10-23 16:31:11 +00:00
Adhemerval Zanella
ab5ee31e14 Move vtimes to a compatibility symbol
I couldn't pinpoint which standard has added it, but no other POSIX
system supports it and/or no longer provide it.  The 'struct vtimes'
also has a lot of drawbacks due its limited internal type size.

I couldn't also see find any project that actually uses this symbol,
either in some dignostic way (such as sanitizer).  So I think it should
be safer to just move to compat symbol, instead of deprecated.  The
idea it to avoid new ports to export such broken interface (riscv32
for instance).

Checked on x86_64-linux-gnu and i686-linux-gnu.
2020-10-19 16:44:20 -03:00
Lukasz Majewski
75c4044b9a y2038: linux: Provide __time64 implementation
In the glibc the time function can use vDSO (on power and x86 the
USE_IFUNC_TIME is defined), time syscall or 'default' time() from
./time/time.c (as a fallback).

In this patch the last function (time) has been refactored and moved
to ./sysdeps/unix/sysv/linux/time.c to be Linux specific.

The new __time64 explicit 64 bit function for providing 64 bit value of
seconds after epoch (by internally calling __clock_gettime64) has been
introduced.

Moreover, a 32 bit version - __time has been refactored to internally
use __time64.

The __time is now supposed to be used on systems still supporting 32 bit
time (__TIMESIZE != 64) - hence the necessary check for time_t potential
overflow.

The iFUNC vDSO direct call optimization has been removed from both i686 and
powerpc32 (USE_IFUNC_TIME is not defined for those architectures
anymore). The Linux kernel does not provide a y2038 safe implementation of
time neither it plans to provide it in the future, __clock_gettime64
should be used instead. Keeping support for this optimization would require
to handle another build permutation (!__ASSUME_TIME64_SYSCALLS &&
USE_IFUNC_TIME which adds more complexity and has limited use (since the
idea is to eventually have a y2038 safe glibc build).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
https://github.com/lmajewski/meta-y2038 and run tests:
https://github.com/lmajewski/y2038-tests/commits/master

Above tests were performed with Y2038 redirection applied as well as
without to test proper usage of both __time64 and __time.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2020-10-19 16:01:37 +02:00
Adhemerval Zanella
30d2e4a963 linux: Add __readdir_unlocked
And use it on readdir_r implementation.

Checked on i686-linux-gnu.
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
4b962c9e85 linux: Simplify opendir buffer allocation
The fallback allocation is removed, so the possible size constraint
should be analyzed just once; __alloc_dir assumes that 'statp'
argument is non-null, and the max_buffer_size move to close its
used.

Checked on x86_64-linux-gnu and i686-linux-gnu.
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
905ae44c77 linux: Move posix dir implementations to Linux
This generic implementation already expects a getdents API which
is Linux specific.  It also allows simplify it by assuming
_DIRENT_HAVE_D_RECLEN and _DIRENT_HAVE_D_OFF support.

The readdir are also expanded on each required implementation,
futher fixes and improvements will make parametrize the
implementation more complex.

Checked on x86_64-linux-gnu, i686-linux-gnu, and with a build
for all affected ABIs.
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
f1ed4d4c2c linux: Add 64-bit time_t support for wait3
It basically calls the 64-bit time_t wait4 internal symbol.

Checked on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
14633d3e56 Move ftime to a compatibility symbol
It was made deprecated on 2.31, so it moves to compat symbol after
two releases.  It was also removed from exported symbol for riscv32
(since ABI will be supported on for 2.33).

Checked on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
01f33a9acc linux: Fix time64 support for futimesat
The generic implementation does not support time64 and the default
one return overflow for invalid tv_sec with UTIME_NOW / UTIME_OMIT
(which is valid since tv_sec in such cases is ignored by the
kernel).

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-16 14:19:23 -03:00
Adhemerval Zanella
cb49c65bb5 linux: Use INTERNAL_SYSCALL on fstatat{64}
Although not required by the standards, some code expects that a
successful stat call should not set errno.  However since aa03f722f3
'linux: Add {f}stat{at} y2038 support', on 32-bit systems with 32-bit
time_t supporrt, stat implementation will first issues __NR_statx and
if it fails with ENOSYS issue the system stat syscall.

On architecture running on kernel without __NR_statx support the
first call will set the errno to ENOSYS, even when the following stat
syscall might not fail.

This patch fixes by using INTERNAL_SYSCALL and only setting the errno
value when function returns.

Checked on i686-linux-gnu, x86_64-linux-gnu, sparc64-linux-gnu,
sparcv9-linux-gnu, powerpc64-linux-gnu, powerpc64le-linux-gnu,
arm-linux-gnueabihf, and aarch64-linux-gnu.
2020-10-16 14:17:44 -03:00
Adhemerval Zanella
602da9de69 sysvipc: Fix tst-sysvshm-linux on x32
The Linux shminfo fields are '__syscall_ulong_t' (which is 64-bit
for x32).  This patch fixes the test to compare againt the correct
type and to only clamp the value if '__syscall_ulong_t' is the same
size of 'unsigned long int'.

Checked on x86_64-linux-gnu-x32.
2020-10-15 15:50:25 -03:00
H.J. Lu
c02695d776 x86/CET: Update vfork to prevent child return
Child of vfork should either call _exit or one of the exec family of
functions.  But normally there is nothing to prevent child of vfork from
return of the vfork-calling function.  Simpilfy x86 vfork when shadow
stack is in use to introduce mismatched shadow stack in child of vfork
to trigger SIGSEGV when the child returns from the function in which
vfork was called.
2020-10-15 04:00:36 -07:00
Chen Li
d3a5ae6ad1 statfs: add missing f_flags assignment
f_flags is added into struct statfs since Linux 2.6.36, which is lacked
in glibc's statfs64.c until now. So mount flags is uninitialized on
platforms having no statfs64 syscall in kernel, e.g., alpha and its derivation
2020-10-15 11:37:45 +02:00
Lukasz Majewski
29e9874a04 y2038: nptl: Convert pthread_mutex_{clock|timed}lock to support 64 bit
The pthread_mutex_clocklock and pthread_mutex_timedlock have been converted
to support 64 bit time.

This change uses:
- New __futex_clocklock_wait64 (instead of lll_timedwait)

from ./sysdeps/nptl/futex-helpers.c and

- New __futex_clocklock64 function (instead of lll_clocklock)
- New futex_lock_pi64

defined in sysdeps/nptl/futex-internal.h

The pthread_mutex_{clock|timed}lock only accepts absolute time.
Moreover, there is no need to check for NULL passed as *abstime pointer to the
syscalls as those calls have exported symbols marked with __nonull attribute
for abstime.

Some architectures - namely x86, powerpc and s390 - do support lock elision.
For those - adjustments have been made in arch specific elision-*.c files
to use __futex_clocklock64 instead of lll_clocklock.
The __lll_lock_elision (aliased to __lll_clocklock_elision in e.g.
sysdeps/unix/sysv/linux/s390/elision-timed.c) just uses, in this patch
provided, __futex_clocklock64.

For systems with __TIMESIZE != 64 && __WORDSIZE == 32:
- Conversions between 64 bit time to 32 bit are necessary
- Redirection to pthread_mutex_{clock|timed}lock will provide support for 64
bit time

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-10-15 09:35:43 +02:00
Adhemerval Zanella
9ebaabeaac sysvipc: Return EINVAL for invalid shmctl commands
It avoids regressions on possible future commands that might require
additional libc support.  The downside is new commands added by newer
kernels will need further glibc support.

Checked on x86_64-linux-gnu and i686-linux-gnu (Linux v4.15 and v5.4).
2020-10-14 11:49:55 -03:00
Adhemerval Zanella
a49d7fd4f7 sysvipc: Fix IPC_INFO and SHM_INFO handling [BZ #26636]
Both commands are Linux extensions where the third argument is either
a 'struct shminfo' (IPC_INFO) or a 'struct shm_info' (SHM_INFO) instead
of 'struct shmid_ds'.  And their information does not contain any time
related fields, so there is no need to extra conversion for __IPC_TIME64.

The regression testcase checks for Linux specifix SysV ipc message
control extension.  For SHM_INFO it tries to match the values against the
tunable /proc values and for MSG_STAT/MSG_STAT_ANY it check if the create\
shared memory is within the global list returned by the kernel.

Checked on x86_64-linux-gnu and on i686-linux-gnu (Linux v5.4 and on
Linux v4.15).
2020-10-14 11:49:55 -03:00
Wilco Dijkstra
e11ed9d2b4 AArch64: Use __memcpy_simd on Neoverse N2/V1
Add CPU detection of Neoverse N2 and Neoverse V1, and select __memcpy_simd as
the memcpy/memmove ifunc.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-10-14 14:27:50 +01:00
Adhemerval Zanella
880a12e96d Add missing stat/mknod symbol on libc.abilist some ABIs
It adds the missing new symbols from 8ed005daf0 and 589260cef8 (which
added versioned symbols for {f,l}stat{at}{64} and mknod{a}t) on some
libc.abilist ABIs.
2020-10-13 10:54:35 -03:00
Adhemerval Zanella
81b83ff61f linux: Move xmknod{at} to compat symbols
It also decouple mknod{at} from xmknod{at}.  The riscv32 ABI was added
on 2.33, so it is safe to remove the old __xmknot{at} symbols and just
provide the newer mknod{at} ones.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:07 -03:00
Adhemerval Zanella
aa03f722f3 linux: Add {f}stat{at} y2038 support
A new struct __stat{64}_t64 type is added with the required
__timespec64 time definition.  Only LFS is added, 64-bit time with
32-bit offsets is not supposed to be supported (no existing glibc
configuration supports such a combination).  It is done with an extra
__NR_statx call plus a conversion to the new __stat{64}_t64 type.
The statx call is done only for 32-bit time_t ABIs.

Internally some extra routines to copy from/to struct stat{64}
to struct __stat{64} used on multiple implementations (stat, fstat,
lstat, and fstatat) are added on a extra implementation
(stat_t64_cp.c).  Alse some extra routines to copy from statx to
__stat{64} is added on statx_cp.c.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:07 -03:00
Adhemerval Zanella
20b39d5946 linux: Move {f}xstat{at} to compat symbols
They are no interna uses anymore.  The riscv32 ABI was added on 2.33,
so it is safe to remove the old __{f,l}stat{at} symbols and just
provide the newer {f,l}stat{at} ones.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:07 -03:00
Adhemerval Zanella
6073bae64c linux: Disentangle fstatat from fxstatat
It implements all the required syscall for the all Linux kABIS on
fstatat{64} instead of calling fxstatat{64}.

On non-LFS implementation, it handles 3 cases:

  1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and
     nios): it issues __NR_fstat64 plus handle the overflow on st_ino,
     st_size, or st_blocks.

  2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k,
     microblaze, mips32, s390, sh, powerpc, and sparc32): it issues
     __NR_fstatat64 and convert the result to struct stat.

  3. 64-bit kABI outliers (mips64 and mips64-n32): it issues
     __NR_newfstatat and convert the result to struct stat.

The generic LFS implementation handles multiple cases:

  1. XSTAT_IS_XSTAT64 being 1:

    1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and
         x86_64): it issues __NR_newfstatat.

    1.2. 64-bit kABI outlier (alpha): it issues __NR_fstatat64.

    1.3. 64-bit kABI outlier where struct stat64 does not match kernel
         one (sparc64): it issues __NR_fstatat64 and convert the result
         to struct stat64.

    1.4. 32-bit kABI with default 64-bit time_t (arc, riscv32): it
         issues __NR_statx and convert the result to struct stat64.

  2. Old ABIs with XSTAT_IS_XSTAT64 being 0:

    2.1. All kABIs with non-LFS support (arm, csky, i386, hppa, m68k,
         microblaze, nios2, sh, powerpc32, and sparc32): it issues
         __NR_fstatat64.

    2.2. 64-bit kABI outliers (mips64 and mips64-n32): it issues
         __NR_newfstatat and convert the result to struct stat64.

It allows to remove all the hidden definitions from the {f,l}xstat{64}
(some are still kept because Hurd requires it).

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:06 -03:00
Adhemerval Zanella
30f1c74394 linux: Implement {l}fstat{at} in terms of fstatat
Both fstatat and fstata64 calls the old fxstatat and fxstatat64
repectivelly with _STAT_VER, the one currently exported as default
for all ABIs.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:06 -03:00
Adhemerval Zanella
d892723830 linux: Move the struct stat{64} to struct_stat.h
The common definitions are moved to a Linux generic stat.h while the
struct stat{64} definition are moved to a arch-specific struct_stat.h
header.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:06 -03:00
Adhemerval Zanella
589260cef8 Remove mknod wrapper functions, move them to symbols
This patch removes the mknod and mknodat static wrapper and add the
symbols on the libc with the expected names.

Both the prototypes of the internal symbol linked by the static
wrappers and the inline redirectors are also removed from the installed
sys/stat.h header file.  The wrapper implementation license LGPL
exception is also removed since it is no longer statically linked to
binaries.

Internally the _STAT_VER* definitions are moved to the arch-specific
xstatver.h file.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:06 -03:00
Adhemerval Zanella
8ed005daf0 Remove stat wrapper functions, move them to exported symbols
This patch removes the stat, stat64, lstat, lstat64, fstat, fstat64,
fstatat, and fstatat64 static wrapper and add the symbol on the libc
with the expected names.

Both the prototypes of the internal symbol linked by the static
wrappers and the inline redirectors are also removed from the installed
sys/stat.h header file.  The wrapper implementation license LGPL
exception is also removed since it is no longer statically linked to
binaries.

Internally the _STAT_VER* definitions are moved to a arch-specific
xstatver.h file.  The internal defines that redirects internals
{f}stat{at} to their {f}xstat{at} counterparts are removed for Linux
(!NO_RTLD_HIDDEN).  Hurd still requires them since {f}stat{at} pulls
extra objects that makes the loader build fail otherwise (I haven't
dig into why exactly).

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:06 -03:00
Adhemerval Zanella
a04689ee7a nptl: Add missing cancellation flags on futex_internal and pselect32
It fixes the tst-cancelx{4,5} and tst-cancel24-{static} regression on
some platforms (arm and sparc32).

Checked on arm-linux-gnueabihf and sparcv9-linux-gnu.
2020-10-07 15:24:04 -03:00
Florian Weimer
b31d4355ae elf: Implement _dl_write
The generic version is parallel to _dl_writev.  It cannot use
_dl_writev directly because the errno value needs to be obtained
under a lock.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-10-07 16:41:30 +02:00
Florian Weimer
27fe5f2e67 Linux: Require properly configured /dev/pts for PTYs
Current systems do not have BSD terminals, so the fallback code in
posix_openpt/getpt does not do anything.  Also remove the file system
check for /dev/pts.  Current systems always have a devpts file system
mounted there if /dev/ptmx exists.

grantpt is now essentially a no-op.  It only verifies that the
argument is a ptmx-descriptor.  Therefore, this change indirectly
addresses bug 24941.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2020-10-07 14:55:50 +02:00