linux: Add execveat system call wrapper

It operates similar to execve and it is is already used to implement
fexecve without requiring /proc to be mounted.  However, different
than fexecve, if the syscall is not supported by the kernel an error
is returned instead of trying a fallback.

Checked on x86_64-linux-gnu and powerpc64le-linux-gnu.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Alexandra Hájková 2021-05-03 16:35:10 +00:00 committed by Adhemerval Zanella
parent 1427d28e30
commit 19d83270fc
40 changed files with 305 additions and 2 deletions

5
NEWS
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@ -18,6 +18,11 @@ Major new features:
a dump of information related to IFUNC resolver operation and
glibc-hwcaps subdirectory selection.
* On Linux, the function execveat has been added. It operates similar to
execve and it is is already used to implement fexecve without requiring
/proc to be mounted. However, different than fexecve, if the syscall is not
supported by the kernel an error is returned instead of trying a fallback.
Deprecated and removed features, and other changes affecting compatibility:
* The function pthread_mutex_consistent_np has been deprecated; programs

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@ -66,7 +66,8 @@ routines := \
posix_madvise \
get_child_max sched_cpucount sched_cpualloc sched_cpufree \
streams-compat \
shm-directory
shm-directory \
execveat
aux := init-posix environ
tests := test-errno tstgetopt testfnm runtests runptests \
@ -103,7 +104,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \
tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
tst-wordexp-nocmd
tst-wordexp-nocmd tst-execveat
# Test for the glob symbol version that was replaced in glibc 2.27.
ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)

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@ -147,6 +147,9 @@ libc {
}
GLIBC_2.30 {
}
GLIBC_2.34 {
execveat;
}
GLIBC_PRIVATE {
__libc_fork; __libc_pread; __libc_pwrite;
__nanosleep_nocancel; __pause_nocancel;

41
posix/execveat.c Normal file
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@ -0,0 +1,41 @@
/* Execute program relative to a directory file descriptor.
Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stddef.h>
#include <unistd.h>
/* Replace the current process, executing PATH relative to difrd with
arguments argv and environment envp.
argv and envp are terminated by NULL pointers. */
int
__execveat (int dirfd, const char *path, char *const argv[], char *const envp[],
int flags)
{
if (path == NULL || argv == NULL || envp == NULL)
{
__set_errno (EINVAL);
return -1;
}
__set_errno (ENOSYS);
return -1;
}
stub_warning (execveat)
weak_alias (__execveat, execveat)

183
posix/tst-execveat.c Normal file
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@ -0,0 +1,183 @@
/* Test execveat at the various corner cases.
Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <support/check.h>
#include <support/support.h>
#include <support/temp_file.h>
#include <support/xdlfcn.h>
#include <support/xstdio.h>
#include <support/xunistd.h>
#include <wait.h>
#include <support/test-driver.h>
int
call_execveat (int fd, const char *pathname, int flags, int expected_fail,
int num)
{
char *envp[] = { (char *) "FOO=3", NULL };
char *argv[] = { (char *) "sh", (char *) "-c", (char *) "exit $FOO", NULL };
pid_t pid;
int status;
if (test_verbose > 0)
printf ("call line number: %d\n", num);
pid = xfork ();
if (pid == 0)
{
TEST_COMPARE (execveat (fd, pathname, argv, envp, flags), -1);
if (errno == ENOSYS)
exit (EXIT_UNSUPPORTED);
else if (errno == expected_fail)
{
if (test_verbose > 0)
printf ("expected fail: errno %d\n", errno);
_exit (0);
}
else
FAIL_EXIT1 ("execveat failed: %m (%d)", errno);
}
xwaitpid (pid, &status, 0);
if (!WIFEXITED (status))
FAIL_RET ("child hasn't exited normally");
if (WIFEXITED (status))
{
if (WEXITSTATUS (status) == EXIT_UNSUPPORTED)
FAIL_UNSUPPORTED ("execveat is unimplemented");
else if (expected_fail != 0)
TEST_COMPARE (WEXITSTATUS (status), 0);
else
TEST_COMPARE (WEXITSTATUS (status), 3);
}
return 0;
}
static int
do_test (void)
{
DIR *dirp;
int fd, fd_out;
char *tmp_dir, *symlink_name, *tmp_sh;
struct stat64 st;
dirp = opendir ("/bin");
if (dirp == NULL)
FAIL_EXIT1 ("failed to open /bin");
fd = dirfd (dirp);
/* Call execveat for various fd/pathname combinations. */
/* Check the pathname relative to a valid dirfd. */
call_execveat (fd, "sh", 0, 0, __LINE__);
xchdir ("/bin");
/* Use the special value AT_FDCWD as dirfd. Quoting open(2):
If pathname is relative and dirfd is the special value AT_FDCWD, then
pathname is interpreted relative to the current working directory of
the calling process. */
call_execveat (AT_FDCWD, "sh", 0, 0, __LINE__);
xclose (fd);
#ifdef O_PATH
/* Check the pathname relative to a valid dirfd with O_PATH. */
fd = xopen ("/bin", O_PATH | O_DIRECTORY, O_RDONLY);
call_execveat (fd, "sh", 0, 0, __LINE__);
xclose (fd);
/* Check absolute pathname, dirfd should be ignored. */
call_execveat (AT_FDCWD, "/bin/sh", 0, 0, __LINE__);
fd = xopen ("/usr", O_PATH | O_DIRECTORY, 0);
/* Same check for absolute pathname, but with input file descriptor
openend with different flags. The dirfd should be ignored. */
call_execveat (fd, "/bin/sh", 0, 0, __LINE__);
xclose (fd);
#endif
fd = xopen ("/usr", O_RDONLY, 0);
/* Same check for absolute pathname, but with input file descriptor
openend with different flags. The dirfd should be ignored. */
call_execveat (fd, "/bin/sh", 0, 0, __LINE__);
xclose (fd);
fd = xopen ("/bin/sh", O_RDONLY, 0);
/* Check relative pathname, where dirfd does not point to a directory. */
call_execveat (fd, "sh", 0, ENOTDIR, __LINE__);
/* Check absolute pathname, but dirfd is a regular file. The dirfd
should be ignored. */
call_execveat (fd, "/bin/sh", 0, 0, __LINE__);
xclose (fd);
#ifdef O_PATH
/* Quoting open(2): O_PATH
Obtain a file descriptor that can be used for two purposes: to
indicate a location in the filesystem tree and to perform
operations that act purely at the file descriptor level. */
fd = xopen ("/bin/sh", O_PATH, 0);
/* Check the empty pathname. Dirfd is a regular file with O_PATH. */
call_execveat (fd, "", 0, ENOENT, __LINE__);
/* Same check for an empty pathname, but with AT_EMPTY_PATH flag.
Quoting open(2):
If oldpath is an empty string, create a link to the file referenced
by olddirfd (which may have been obtained using the open(2) O_PATH flag. */
call_execveat (fd, "", AT_EMPTY_PATH, 0, __LINE__);
call_execveat (fd, "", AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW, 0, __LINE__);
xclose (fd);
/* Create a temporary directory "tmp_dir" and create a symbolik link tmp_sh
pointing to /bin/sh inside the tmp_dir. Open dirfd as a symbolic link. */
tmp_dir = support_create_temp_directory ("tst-execveat_dir");
symlink_name = xasprintf ("%s/symlink", tmp_dir);
xsymlink ("tmp_sh", symlink_name);
add_temp_file (symlink_name);
tmp_sh = xasprintf ("%s/tmp_sh", tmp_dir);
add_temp_file (tmp_sh);
fd_out = xopen (symlink_name, O_CREAT | O_WRONLY, 0);
xstat ("/bin/sh", &st);
fd = xopen ("/bin/sh", O_RDONLY, 0);
xcopy_file_range (fd, 0, fd_out, 0, st.st_size, 0);
xfchmod (fd_out, 0700);
xclose (fd);
xclose (fd_out);
fd_out = xopen (symlink_name, O_PATH, 0);
/* Check the empty pathname. Dirfd is a symbolic link. */
call_execveat (fd_out, "", 0, ENOENT, __LINE__);
call_execveat (fd_out, "", AT_EMPTY_PATH, 0, __LINE__);
call_execveat (fd_out, "", AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW, 0,
__LINE__);
xclose (fd_out);
free (symlink_name);
free (tmp_sh);
free (tmp_dir);
#endif
/* Call execveat with closed fd, we expect this to fail with EBADF. */
call_execveat (fd, "sh", 0, EBADF, __LINE__);
/* Call execveat with closed fd, we expect this to pass because the pathname is
absolute. */
call_execveat (fd, "/bin/sh", 0, 0, __LINE__);
return 0;
}
#include <support/test-driver.c>

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@ -295,6 +295,11 @@ extern int euidaccess (const char *__name, int __type)
/* An alias for `euidaccess', used by some other systems. */
extern int eaccess (const char *__name, int __type)
__THROW __nonnull ((1));
/* Execute program relative to a directory file descriptor. */
extern int execveat (int __fd, const char *__path, char *const __argv[],
char *const __envp[], int __flags)
__THROW __nonnull ((2, 3));
#endif
#ifdef __USE_ATFILE

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@ -2207,6 +2207,7 @@ GLIBC_2.33 stat64 F
GLIBC_2.34 __isnanf128 F
GLIBC_2.34 __libc_start_main F
GLIBC_2.34 _hurd_libc_proc_init F
GLIBC_2.34 execveat F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

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@ -2286,6 +2286,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2367,6 +2367,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2045,6 +2045,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -193,6 +193,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -190,6 +190,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2229,6 +2229,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -0,0 +1,32 @@
/* Execute program relative to a directory file descriptor.
Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <fd_to_filename.h>
#include <sysdep.h>
#include <unistd.h>
/* Execute the file FD refers to, overlaying the running program image.
ARGV and ENVP are passed to the new program, as for 'execve'. */
int
execveat (int dirfd, const char *path, char *const argv[], char *const envp[],
int flags)
{
/* Avoid implicit array coercion in syscall macros. */
return INLINE_SYSCALL_CALL (execveat, dirfd, path, &argv[0], &envp[0],
flags);
}

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@ -2180,6 +2180,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2357,6 +2357,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2214,6 +2214,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -194,6 +194,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2300,6 +2300,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2280,6 +2280,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2277,6 +2277,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2263,6 +2263,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2261,6 +2261,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2269,6 +2269,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2263,6 +2263,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2319,6 +2319,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2327,6 +2327,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2360,6 +2360,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2181,6 +2181,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2482,6 +2482,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2047,6 +2047,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2247,6 +2247,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2325,6 +2325,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2218,6 +2218,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2187,6 +2187,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2184,6 +2184,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2316,6 +2316,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2235,6 +2235,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2196,6 +2196,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F

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@ -2301,6 +2301,7 @@ GLIBC_2.34 cnd_init F
GLIBC_2.34 cnd_signal F
GLIBC_2.34 cnd_timedwait F
GLIBC_2.34 cnd_wait F
GLIBC_2.34 execveat F
GLIBC_2.34 mtx_destroy F
GLIBC_2.34 mtx_init F
GLIBC_2.34 mtx_lock F