1 | #include <assert.h> |
2 | #include <ctype.h> |
3 | #include <dirent.h> |
4 | #include <errno.h> |
5 | #include <fcntl.h> |
6 | #include <paths.h> |
7 | #include <stdlib.h> |
8 | #include <unistd.h> |
9 | |
10 | #include <not-cancel.h> |
11 | |
12 | #include "pty-private.h" |
13 | |
14 | #if HAVE_PT_CHOWN |
15 | /* Close all file descriptors except the one specified. */ |
16 | static void |
17 | close_all_fds (void) |
18 | { |
19 | DIR *dir = __opendir ("/proc/self/fd" ); |
20 | if (dir != NULL) |
21 | { |
22 | struct dirent64 *d; |
23 | while ((d = __readdir64 (dir)) != NULL) |
24 | if (isdigit (d->d_name[0])) |
25 | { |
26 | char *endp; |
27 | long int fd = strtol (d->d_name, &endp, 10); |
28 | if (*endp == '\0' && fd != PTY_FILENO && fd != dirfd (dir)) |
29 | close_not_cancel_no_status (fd); |
30 | } |
31 | |
32 | __closedir (dir); |
33 | |
34 | int nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_RDONLY); |
35 | assert (nullfd == STDIN_FILENO); |
36 | nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_WRONLY); |
37 | assert (nullfd == STDOUT_FILENO); |
38 | __dup2 (STDOUT_FILENO, STDERR_FILENO); |
39 | } |
40 | } |
41 | # define CLOSE_ALL_FDS() close_all_fds() |
42 | #endif |
43 | |
44 | #include <sysdeps/unix/grantpt.c> |
45 | |