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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
int
libsimple_execveat(int dirfd, const char *pathname, char *const argv[], char *const envp[], int flags)
{
struct stat st;
int fd, saved_errno;
#if defined(__linux__)
execveat(dirfd, pathname, argv, envp, flags);
if (errno != ENOSYS)
return -1;
#endif
if (flags & AT_EMPTY_PATH)
return fexecve(dirfd, argv, envp);
#ifndef O_PATH
# define O_PATH O_RDONLY
#endif
fd = openat(dirfd, pathname, O_PATH | ((flags & AT_SYMLINK_NOFOLLOW) ? O_NOFOLLOW : 0));
if (fd < 0)
return -1;
if (flags & AT_SYMLINK_NOFOLLOW) {
if (fstat(fd, &st)) {
saved_errno = errno;
close(fd);
errno = saved_errno;
return -1;
}
if (S_ISLNK(st.st_mode)) {
close(fd);
errno = ELOOP;
return -1;
}
}
return fexecve(fd, argv, envp);
}
#else
#include "test.h"
int
main(void)
{
return 0;
}
#endif
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