Revision: 23447 http://trac.macosforge.org/projects/launchd/changeset/23447 Author: zarzycki@apple.com Date: 2007-10-30 14:41:05 -0700 (Tue, 30 Oct 2007) Log Message: ----------- 5487498 Added Paths: ----------- trunk/launchd/testing/our_kill_is_busted.c Added: trunk/launchd/testing/our_kill_is_busted.c =================================================================== --- trunk/launchd/testing/our_kill_is_busted.c (rev 0) +++ trunk/launchd/testing/our_kill_is_busted.c 2007-10-30 21:41:05 UTC (rev 23447) @@ -0,0 +1,56 @@ +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <assert.h> +#include <errno.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <signal.h> + +int +main(void) +{ + int wstatus; + pid_t p, wr; + int kill_r, killpg_r, r; + int kill_e, killpg_e; + + p = fork(); + assert(p != -1); + + if (p == 0) { + r = setsid(); + assert(r != -1); + _exit(EXIT_SUCCESS); + } + + sleep(1); + + errno = 0; + kill_r = kill(p, SIGTERM); + kill_e = errno; + + errno = 0; + killpg_r = kill(-(p), SIGTERM); + killpg_e = errno; + + if (kill_r != killpg_r) { + fprintf(stderr, "Bug. kill() is inconsistent.\n"); + fprintf(stderr, "kill( p, SIGTERM) returned %d and errno == %d\n", kill_r, kill_e); + fprintf(stderr, "kill(-(p), SIGTERM) returned %d and errno == %d\n", killpg_r, killpg_e); + if (kill_e == EPERM || killpg_e == EPERM) { + fprintf(stderr, "The kernel lied. We should have the right to kill 'p' and it returned EPERM.\n"); + } + if (kill_e == ESRCH || killpg_e == ESRCH) { + fprintf(stderr, "The kernel is confused. PID 'p' exists, but the kernel couldn't find it.\n"); + } + + exit(EXIT_FAILURE); + } + + wr = waitpid(p, &wstatus, 0); + assert(wr == p); + + exit(EXIT_SUCCESS); +}