| #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> |
