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factor out NOFORK/NOEXEC code from find. Use it for xargs too.

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This commit is contained in:
Denis Vlasenko
2007-04-09 21:32:30 +00:00
parent 1b4b2cb20e
commit cd7001f705
4 changed files with 76 additions and 68 deletions
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35
findutils/xargs.c
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@@ -48,47 +48,32 @@
This function has special algorithm.
Don't use fork and include to main!
*/
static int xargs_exec(char *const *args)
static int xargs_exec(char **args)
{
pid_t p;
volatile int exec_errno = 0; /* shared vfork stack */
int status;
p = vfork();
if (p < 0)
bb_perror_msg_and_die("vfork");
if (p == 0) {
/* vfork -- child */
BB_EXECVP(args[0], args);
exec_errno = errno; /* set error to shared stack */
_exit(1);
}
/* vfork -- parent */
while (wait(&status) == (pid_t) -1)
if (errno != EINTR)
break;
if (exec_errno) {
errno = exec_errno;
status = spawn_and_wait(args);
if (status < 0) {
bb_perror_msg("%s", args[0]);
return exec_errno == ENOENT ? 127 : 126;
return errno == ENOENT ? 127 : 126;
}
if (WEXITSTATUS(status) == 255) {
if (status == 255) {
bb_error_msg("%s: exited with status 255; aborting", args[0]);
return 124;
}
/* Huh? I think we won't see this, ever. We don't wait with WUNTRACED!
if (WIFSTOPPED(status)) {
bb_error_msg("%s: stopped by signal %d",
args[0], WSTOPSIG(status));
return 125;
}
if (WIFSIGNALED(status)) {
*/
if (status >= 1000) {
bb_error_msg("%s: terminated by signal %d",
args[0], WTERMSIG(status));
args[0], status - 1000);
return 125;
}
if (WEXITSTATUS(status))
if (status)
return 123;
return 0;
}