diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | login/programs/pt_chown.c | 5 | ||||
| -rw-r--r-- | sysdeps/unix/grantpt.c | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/grantpt.c | 42 |
4 files changed, 54 insertions, 3 deletions
@@ -1,5 +1,11 @@ 2009-11-24 Ulrich Drepper <drepper@redhat.com> + * sysdeps/unix/grantpt.c (grantpt): Use CLOSE_ALL_FDS is available + before the exec. + * sysdeps/unix/sysv/linux/grantpt.c: New file. + * login/programs/pt_chown.c (main): Don't print message on errors + when doing real work. + * sysdeps/unix/grantpt.c (grantpt): Only get tty group information once. diff --git a/login/programs/pt_chown.c b/login/programs/pt_chown.c index 7e279a5f3b..4c36f2ceac 100644 --- a/login/programs/pt_chown.c +++ b/login/programs/pt_chown.c @@ -154,8 +154,7 @@ main (int argc, char *argv[]) # define ncap_list (sizeof (cap_list) / sizeof (cap_list[0])) cap_t caps = cap_init (); if (caps == NULL) - error (FAIL_ENOMEM, errno, - _("Failed to initialize drop of capabilities")); + return FAIL_ENOMEM; /* There is no reason why these should not work. */ cap_set_flag (caps, CAP_PERMITTED, ncap_list, cap_list, CAP_SET); @@ -166,7 +165,7 @@ main (int argc, char *argv[]) cap_free (caps); if (__builtin_expect (res != 0, 0)) - error (FAIL_EXEC, errno, _("cap_set_proc failed")); + return FAIL_EXEC; } #endif diff --git a/sysdeps/unix/grantpt.c b/sysdeps/unix/grantpt.c index e140fb2850..2a7a963162 100644 --- a/sysdeps/unix/grantpt.c +++ b/sysdeps/unix/grantpt.c @@ -194,6 +194,10 @@ grantpt (int fd) if (__dup2 (fd, PTY_FILENO) < 0) _exit (FAIL_EBADF); +#ifdef CLOSE_ALL_FDS + CLOSE_ALL_FDS (); +#endif + execle (_PATH_PT_CHOWN, basename (_PATH_PT_CHOWN), NULL, NULL); _exit (FAIL_EXEC); } diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c new file mode 100644 index 0000000000..6305ed4944 --- /dev/null +++ b/sysdeps/unix/sysv/linux/grantpt.c @@ -0,0 +1,42 @@ +#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> |