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main: acquire console before execing crash shell

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This commit is contained in:
Lennart Poettering 2010-05-14 04:35:51 +02:00
parent 64c1b5bf9c
commit ea5652c296
1 changed files with 17 additions and 0 deletions
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17
main.c
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@ -136,6 +136,23 @@ _noreturn static void crash(int sig) {
if ((pid = fork()) < 0)
log_error("Failed to fork off crash shell: %s", strerror(errno));
else if (pid == 0) {
int fd;
if ((fd = acquire_terminal("/dev/console", false, true)) < 0) {
log_error("Failed to acquire terminal: %s", strerror(-fd));
_exit(1);
}
if (dup2(fd, STDIN_FILENO) < 0 ||
dup2(fd, STDOUT_FILENO) < 0 ||
dup2(fd, STDERR_FILENO) < 0) {
log_error("Failed to duplicate terminal fd: %s", strerror(errno));
_exit(1);
}
if (fd >= 3)
close_nointr_nofail(fd);
execl("/bin/sh", "/bin/sh", NULL);
log_error("execl() failed: %s", strerror(errno));