X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fudevadm-settle.c;h=0d3025ed16c809a3bfa6c3eafc8ff8d7c48fbb9b;hb=113b3fc1a8061f4a24dd0db74e9a3cd0083b2251;hp=65fc35f9a076f87c45c1712e2464a56ba98b0e52;hpb=9ea28c55a2488e6cd4a44ac5786f12b71ad5bc9f;p=elogind.git

diff --git a/src/udev/udevadm-settle.c b/src/udev/udevadm-settle.c
index 65fc35f9a..0d3025ed1 100644
--- a/src/udev/udevadm-settle.c
+++ b/src/udev/udevadm-settle.c
@@ -23,46 +23,42 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <errno.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <syslog.h>
 #include <getopt.h>
-#include <signal.h>
-#include <time.h>
-#include <sys/inotify.h>
-#include <sys/poll.h>
-#include <sys/stat.h>
-#include <sys/types.h>
+#include <poll.h>
 
 #include "udev.h"
-#include "udev-util.h"
 #include "util.h"
 
 static void help(void) {
-        printf("Usage: udevadm settle OPTIONS\n"
-               "  -t,--timeout=<seconds>     maximum time to wait for events\n"
-               "  -E,--exit-if-exists=<file> stop waiting if file exists\n"
-               "  -h,--help\n\n");
+        printf("%s settle OPTIONS\n\n"
+               "Wait for pending udev events.\n\n"
+               "  -h --help                 Show this help\n"
+               "     --version              Show package version\n"
+               "  -t --timeout=SECONDS      Maximum time to wait for events\n"
+               "  -E --exit-if-exists=FILE  Stop waiting if file exists\n"
+               , program_invocation_short_name);
 }
 
-static int adm_settle(struct udev *udev, int argc, char *argv[])
-{
+static int adm_settle(struct udev *udev, int argc, char *argv[]) {
         static const struct option options[] = {
-                { "seq-start",      required_argument, NULL, '\0' }, /* removed */
-                { "seq-end",        required_argument, NULL, '\0' }, /* removed */
                 { "timeout",        required_argument, NULL, 't' },
                 { "exit-if-exists", required_argument, NULL, 'E' },
-                { "quiet",          no_argument,       NULL, 'q' },  /* removed */
                 { "help",           no_argument,       NULL, 'h' },
+                { "seq-start",      required_argument, NULL, 's' }, /* removed */
+                { "seq-end",        required_argument, NULL, 'e' }, /* removed */
+                { "quiet",          no_argument,       NULL, 'q' }, /* removed */
                 {}
         };
         const char *exists = NULL;
         unsigned int timeout = 120;
         struct pollfd pfd[1] = { {.fd = -1}, };
-        int rc = EXIT_FAILURE, c;
+        int c;
+        struct udev_queue *queue;
+        int rc = EXIT_FAILURE;
 
-        while ((c = getopt_long(argc, argv, "s:e:t:E:qh", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "t:E:hs:e:q", options, NULL)) >= 0) {
                 switch (c) {
+
                 case 't': {
                         int r;
 
@@ -74,14 +70,24 @@ static int adm_settle(struct udev *udev, int argc, char *argv[])
                         };
                         break;
                 }
+
                 case 'E':
                         exists = optarg;
                         break;
+
                 case 'h':
                         help();
-                        exit(EXIT_SUCCESS);
+                        return EXIT_SUCCESS;
+
+                case 's':
+                case 'e':
+                case 'q':
+                        log_info("Option -%c no longer supported.", c);
+                        return EXIT_FAILURE;
+
                 case '?':
-                        exit(EXIT_FAILURE);
+                        return EXIT_FAILURE;
+
                 default:
                         assert_not_reached("Unknown argument");
                 }
@@ -89,7 +95,7 @@ static int adm_settle(struct udev *udev, int argc, char *argv[])
 
         if (optind < argc) {
                 fprintf(stderr, "Extraneous argument: '%s'\n", argv[optind]);
-                exit(EXIT_FAILURE);
+                return EXIT_FAILURE;
         }
 
         /* guarantee that the udev daemon isn't pre-processing */
@@ -101,22 +107,23 @@ static int adm_settle(struct udev *udev, int argc, char *argv[])
                         if (udev_ctrl_send_ping(uctrl, timeout) < 0) {
                                 log_debug("no connection to daemon");
                                 udev_ctrl_unref(uctrl);
-                                rc = EXIT_SUCCESS;
-                                goto out;
+                                return EXIT_SUCCESS;
                         }
                         udev_ctrl_unref(uctrl);
                 }
         }
 
-        pfd[0].events = POLLIN;
-        pfd[0].fd = inotify_init1(IN_CLOEXEC);
-        if (pfd[0].fd < 0) {
-                log_error("inotify_init failed: %m");
-                goto out;
+        queue = udev_queue_new(udev);
+        if (!queue) {
+                log_error("unable to get udev queue");
+                return EXIT_FAILURE;
         }
 
-        if (inotify_add_watch(pfd[0].fd, "/run/udev/queue" , IN_DELETE) < 0) {
-                log_debug("watching /run/udev failed");
+        pfd[0].events = POLLIN;
+        pfd[0].fd = udev_queue_get_fd(queue);
+        if (pfd[0].fd < 0) {
+                log_debug("queue is empty, nothing to watch");
+                rc = EXIT_SUCCESS;
                 goto out;
         }
 
@@ -127,27 +134,23 @@ static int adm_settle(struct udev *udev, int argc, char *argv[])
                 }
 
                 /* exit if queue is empty */
-                if (access("/run/udev/queue", F_OK) < 0) {
+                if (udev_queue_get_queue_is_empty(queue)) {
                         rc = EXIT_SUCCESS;
                         break;
                 }
 
-                /* wake up when "queue" file is deleted */
-                if (poll(pfd, 1, 100) > 0 && pfd[0].revents & POLLIN) {
-                        char buf[sizeof(struct inotify_event) + PATH_MAX];
-
-                        read(pfd[0].fd, buf, sizeof(buf));
-                }
+                /* wake up when queue is empty */
+                if (poll(pfd, 1, MSEC_PER_SEC) > 0 && pfd[0].revents & POLLIN)
+                        udev_queue_flush(queue);
         }
 
 out:
-        if (pfd[0].fd >= 0)
-                close(pfd[0].fd);
+        udev_queue_unref(queue);
         return rc;
 }
 
 const struct udevadm_cmd udevadm_settle = {
         .name = "settle",
         .cmd = adm_settle,
-        .help = "wait for pending udev events",
+        .help = "Wait for pending udev events",
 };