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linux: Use INTERNAL_SYSCALL on fstatat{64}

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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.
This commit is contained in:
Adhemerval Zanella
2020-10-14 14:31:38 -03:00
parent 9030377480
commit cb49c65bb5
4 changed files with 34 additions and 28 deletions
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4
sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h
View File

@ -18,7 +18,7 @@
#include <errno.h>
static inline int
static inline void
__cp_stat64_kstat64 (struct stat64 *st64, const struct kernel_stat64 *kst64)
{
st64->st_dev = kst64->st_dev;
@ -41,6 +41,4 @@ __cp_stat64_kstat64 (struct stat64 *st64, const struct kernel_stat64 *kst64)
st64->st_ctim.tv_nsec = kst64->st_ctime_nsec;
st64->__glibc_reserved4 = 0;
st64->__glibc_reserved5 = 0;
return 0;
}