/* This function must be called with the LOCK held */
static void __set_unlocked(void)
{
if (static_fd < 0) {
static_fd = open_not_cancel_2(current_file, O_RDWR | O_CLOEXEC);
if (static_fd < 0) {
static_fd = open_not_cancel_2(current_file, O_RDONLY | O_CLOEXEC);
if (static_fd < 0) {
return; /* static_fd remains < 0 */
}
}
#ifndef __ASSUME_O_CLOEXEC
/* Make sure the file will be closed on exec() */
fcntl_not_cancel(static_fd, F_SETFD, FD_CLOEXEC);
#endif
return;
}
lseek(static_fd, 0, SEEK_SET);
}
static int
setutent_file (void)
{
if (file_fd < 0)
{
const char *file_name;
file_name = TRANSFORM_UTMP_FILE_NAME (__libc_utmp_file_name);
#ifdef O_CLOEXEC
# define O_flags O_LARGEFILE | O_CLOEXEC
#else
# define O_flags O_LARGEFILE
#endif
file_writable = false;
file_fd = open_not_cancel_2 (file_name, O_RDONLY | O_flags);
if (file_fd == -1)
return 0;
#ifndef __ASSUME_O_CLOEXEC
# ifdef O_CLOEXEC
if (__have_o_cloexec <= 0)
# endif
{
/* We have to make sure the file is `closed on exec'. */
int result = fcntl_not_cancel (file_fd, F_GETFD, 0);
if (result >= 0)
{
# ifdef O_CLOEXEC
if (__have_o_cloexec == 0)
__have_o_cloexec = (result & FD_CLOEXEC) ? 1 : -1;
if (__have_o_cloexec < 0)
# endif
result = fcntl_not_cancel (file_fd, F_SETFD,
result | FD_CLOEXEC);
}
if (result == -1)
{
close_not_cancel_no_status (file_fd);
return 0;
}
}
#endif
}
__lseek64 (file_fd, 0, SEEK_SET);
file_offset = 0;
/* Make sure the entry won't match. */
#if _HAVE_UT_TYPE - 0
last_entry.ut_type = -1;
#else
last_entry.ut_line[0] = '\177';
# if _HAVE_UT_ID - 0
last_entry.ut_id[0] = '\0';
# endif
#endif
return 1;
}
