1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stdlib.h>
#include <unistd.h>
#include <not-cancel.h>
#include "pty-private.h"
#if HAVE_PT_CHOWN
/* Close all file descriptors except the one specified. */
static void
close_all_fds (void)
{
DIR *dir = __opendir ("/proc/self/fd");
if (dir != NULL)
{
struct dirent64 *d;
while ((d = __readdir64 (dir)) != NULL)
if (isdigit (d->d_name[0]))
{
char *endp;
long int fd = strtol (d->d_name, &endp, 10);
if (*endp == '\0' && fd != PTY_FILENO && fd != dirfd (dir))
__close_nocancel_nostatus (fd);
}
__closedir (dir);
int nullfd = __open_nocancel (_PATH_DEVNULL, O_RDONLY);
assert (nullfd == STDIN_FILENO);
nullfd = __open_nocancel (_PATH_DEVNULL, O_WRONLY);
assert (nullfd == STDOUT_FILENO);
__dup2 (STDOUT_FILENO, STDERR_FILENO);
}
}
# define CLOSE_ALL_FDS() close_all_fds()
#endif
#include <sysdeps/unix/grantpt.c>
|
