Revision: 23015 http://trac.macosforge.org/projects/launchd/changeset/23015 Author: zarzycki@apple.com Date: 2007-01-22 12:55:07 -0800 (Mon, 22 Jan 2007) Log Message: ----------- Nothing like writing code to track down bugs in other software. Modified Paths: -------------- trunk/launchd/src/launchd_core_logic.c Modified: trunk/launchd/src/launchd_core_logic.c =================================================================== --- trunk/launchd/src/launchd_core_logic.c 2007-01-22 19:43:32 UTC (rev 23014) +++ trunk/launchd/src/launchd_core_logic.c 2007-01-22 20:55:07 UTC (rev 23015) @@ -291,6 +291,7 @@ static bool job_setup_machport(job_t j); static void job_setup_fd(job_t j, int target_fd, const char *path, int flags); static void job_postfork_become_user(job_t j); +static void job_find_and_blame_pids_with_weird_uids(job_t j); static void job_force_sampletool(job_t j); static void job_reparent_hack(job_t j, const char *where); static void job_callback(void *obj, struct kevent *kev); @@ -1953,6 +1954,36 @@ } void +job_find_and_blame_pids_with_weird_uids(job_t j) +{ + int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_ALL }; + size_t i, kp_cnt, len = 10*1024*1024; + struct kinfo_proc *kp = malloc(len); + uid_t u = j->mach_uid; + + if (!job_assumes(j, sysctl(mib, 3, kp, &len, NULL, 0) != -1)) { + return; + } + + kp_cnt = len / sizeof(struct kinfo_proc); + + for (i = 0; i <= kp_cnt; i++) { + uid_t i_euid = kp[i].kp_eproc.e_ucred.cr_uid; + uid_t i_uid = kp[i].kp_eproc.e_pcred.p_ruid; + uid_t i_svuid = kp[i].kp_eproc.e_pcred.p_svuid; + + if (i_euid != u && i_uid != u && i_svuid != u) { + continue; + } + + job_log(j, LOG_ERR, "PID %u (\"%s\") has no account to back it! (real/effective/saved UIDs: %u/%u/%u)", + kp[i].kp_proc.p_pid, kp[i].kp_proc.p_comm, i_uid, i_euid, i_svuid); + } + + free(kp); +} + +void job_postfork_become_user(job_t j) { char loginname[2000]; @@ -1974,6 +2005,7 @@ } else if (j->mach_uid) { if ((pwe = getpwuid(j->mach_uid)) == NULL) { job_log(j, LOG_ERR, "getpwuid(\"%u\") failed", j->mach_uid); + job_find_and_blame_pids_with_weird_uids(j); _exit(EXIT_FAILURE); } } else {