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io/tst-stat.c: Use a temporary directory for symlink test 

Call support_create_temp_directory to create a temporary directory for
symlink test, instead of a fixed file in the glibc source tree, to avoid
the race condition when there are more than one glibc tests running at the
same time with the same glibc source tree.  This fixes BZ #33178.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
This commit is contained in:
H.J. Lu 2025-07-18 17:03:04 -07:00
parent 01196393c2
commit 55e85c1e48
1 changed files with 9 additions and 4 deletions
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13
io/tst-stat.c
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@ -27,6 +27,7 @@
#include <sys/sysmacros.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
static void
stat_check (int fd, const char *path, struct stat *st)
@ -78,7 +79,8 @@ static int
do_test (void)
{
char *path;
const char *linkame = "tst-fstat.linkname";
char *tempdir = support_create_temp_directory ("tst-stat-");
char *linkname = xasprintf ("%s/tst-fstat.linkname", tempdir);
int fd = create_temp_file ("tst-fstat.", &path);
TEST_VERIFY_EXIT (fd >= 0);
support_write_file_string (path, "abc");
@ -122,9 +124,12 @@ do_test (void)
}
}
TEST_COMPARE (symlink ("tst-fstat.target", linkame), 0);
add_temp_file (linkame);
fstatat_link (linkame, &st);
TEST_COMPARE (symlink ("tst-fstat.target", linkname), 0);
add_temp_file (linkname);
fstatat_link (linkname, &st);
free (linkname);
free (tempdir);
return 0;
}