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linux: Fix fchmodat with AT_SYMLINK_NOFOLLOW for 64 bit time_t (BZ#29097)

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The AT_SYMLINK_NOFOLLOW emulation ues the default 32 bit stat internal
calls, which fails with EOVERFLOW if the file constains timestamps
beyond 2038.

Checked on i686-linux-gnu.
This commit is contained in:
Adhemerval Zanella
2022-04-27 13:40:30 -03:00
parent 6f043e0ee7
commit 118a2aee07
4 changed files with 30 additions and 6 deletions
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4
sysdeps/unix/sysv/linux/fchmodat.c
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@@ -48,8 +48,8 @@ fchmodat (int fd, const char *file, mode_t mode, int flag)
/* Use fstatat because fstat does not work on O_PATH descriptors
before Linux 3.6. */
struct stat64 st;
if (__fstatat64 (pathfd, "", &st, AT_EMPTY_PATH) != 0)
struct __stat64_t64 st;
if (__fstatat64_time64 (pathfd, "", &st, AT_EMPTY_PATH) != 0)
{
__close_nocancel (pathfd);
return -1;