static int found_override(const char *top, const char *bottom) { _cleanup_free_ char *dest = NULL; int k; pid_t pid; assert(top); assert(bottom); if (null_or_empty_path(top) > 0) { notify_override_masked(top, bottom); return 0; } k = readlink_malloc(top, &dest); if (k >= 0) { if (equivalent(dest, bottom) > 0) notify_override_equivalent(top, bottom); else notify_override_redirected(top, bottom); return 0; } notify_override_overridden(top, bottom); if (!arg_diff) return 0; putchar('\n'); fflush(stdout); pid = fork(); if (pid < 0) { log_error("Failed to fork off diff: %m"); return -errno; } else if (pid == 0) { execlp("diff", "diff", "-us", "--", bottom, top, NULL); log_error("Failed to execute diff: %m"); _exit(1); } wait_for_terminate(pid, NULL); putchar('\n'); return 0; }
static int found_override(const char *top, const char *bottom) { _cleanup_free_ char *dest = NULL; int k; pid_t pid; assert(top); assert(bottom); if (null_or_empty_path(top) > 0) return notify_override_masked(top, bottom); k = readlink_malloc(top, &dest); if (k >= 0) { if (equivalent(dest, bottom) > 0) return notify_override_equivalent(top, bottom); else return notify_override_redirected(top, bottom); } k = notify_override_overridden(top, bottom); if (!arg_diff) return k; putchar('\n'); fflush(stdout); pid = fork(); if (pid < 0) return log_error_errno(errno, "Failed to fork off diff: %m"); else if (pid == 0) { (void) reset_all_signal_handlers(); (void) reset_signal_mask(); assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); execlp("diff", "diff", "-us", "--", bottom, top, NULL); log_error_errno(errno, "Failed to execute diff: %m"); _exit(EXIT_FAILURE); } wait_for_terminate_and_warn("diff", pid, false); putchar('\n'); return k; }