if (cmd->env) {
for (; *cmd->env; cmd->env++) {
if (strchr(*cmd->env, '='))
- putenv((char*)*cmd->env);
+ putenv((char *)*cmd->env);
else
unsetenv(*cmd->env);
}
} else {
execvp(cmd->argv[0], (char *const*) cmd->argv);
}
- die("exec %s failed.", cmd->argv[0]);
+ trace_printf("trace: exec '%s' failed: %s\n", cmd->argv[0],
+ strerror(errno));
+ exit(127);
}
#else
int s0 = -1, s1 = -1, s2 = -1; /* backups of stdin, stdout, stderr */
#endif
if (cmd->pid < 0) {
+ int err = errno;
if (need_in)
close_pair(fdin);
else if (cmd->in)
close(cmd->out);
if (need_err)
close_pair(fderr);
- return -ERR_RUN_COMMAND_FORK;
+ return err == ENOENT ?
+ -ERR_RUN_COMMAND_EXEC :
+ -ERR_RUN_COMMAND_FORK;
}
if (need_in)
if (!WIFEXITED(status))
return -ERR_RUN_COMMAND_WAITPID_NOEXIT;
code = WEXITSTATUS(status);
- if (code)
+ switch (code) {
+ case 127:
+ return -ERR_RUN_COMMAND_EXEC;
+ case 0:
+ return 0;
+ default:
return -code;
- return 0;
+ }
}
}