mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-01 17:30:07 +00:00
44 lines
1011 B
C
44 lines
1011 B
C
#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"
|
|
|
|
|
|
/* 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_not_cancel_no_status (fd);
|
|
}
|
|
|
|
__closedir (dir);
|
|
|
|
int nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_RDONLY);
|
|
assert (nullfd == STDIN_FILENO);
|
|
nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_WRONLY);
|
|
assert (nullfd == STDOUT_FILENO);
|
|
__dup2 (STDOUT_FILENO, STDERR_FILENO);
|
|
}
|
|
}
|
|
#define CLOSE_ALL_FDS() close_all_fds()
|
|
|
|
#include <sysdeps/unix/grantpt.c>
|