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udev: don't fail if /dev/snd is not available right-away

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This commit is contained in:
Lennart Poettering 2009-07-22 22:48:54 +02:00
parent 2f54b5df18
commit e3b0ce57e0
1 changed files with 28 additions and 6 deletions
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28
src/modules/module-udev-detect.c
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@ -65,6 +65,8 @@ static const char* const valid_modargs[] = {
NULL
};
static int setup_inotify(struct userdata *u);
static void device_free(struct device *d) {
pa_assert(d);
@ -117,6 +119,9 @@ static void card_changed(struct userdata *u, struct udev_device *dev) {
pa_assert(u);
pa_assert(dev);
/* Maybe /dev/snd is now available? */
setup_inotify(u);
path = udev_device_get_devpath(dev);
if ((d = pa_hashmap_get(u->devices, path))) {
@ -262,7 +267,7 @@ static void inotify_cb(
} buf;
struct userdata *u = userdata;
static int type = 0;
pa_bool_t verify = FALSE;
pa_bool_t verify = FALSE, deleted = FALSE;
for (;;) {
ssize_t r;
@ -279,6 +284,9 @@ static void inotify_cb(
if ((buf.e.mask & IN_CLOSE_WRITE) && pa_startswith(buf.e.name, "pcmC"))
verify = TRUE;
if ((buf.e.mask & (IN_DELETE_SELF|IN_MOVE_SELF)))
deleted = TRUE;
}
if (verify) {
@ -291,11 +299,14 @@ static void inotify_cb(
verify_access(u, d);
}
if (!deleted)
return;
fail:
if (u->inotify_io) {
a->io_free(u->inotify_io);
u->inotify_io = NULL;
}
if (u->inotify_fd >= 0) {
pa_close(u->inotify_fd);
@ -307,17 +318,28 @@ static int setup_inotify(struct userdata *u) {
char *dev_snd;
int r;
if (u->inotify_fd >= 0)
return 0;
if ((u->inotify_fd = inotify_init1(IN_CLOEXEC|IN_NONBLOCK)) < 0) {
pa_log("inotify_init1() failed: %s", pa_cstrerror(errno));
return -1;
}
dev_snd = pa_sprintf_malloc("%s/snd", udev_get_dev_path(u->udev));
r = inotify_add_watch(u->inotify_fd, dev_snd, IN_CLOSE_WRITE);
r = inotify_add_watch(u->inotify_fd, dev_snd, IN_CLOSE_WRITE|IN_DELETE_SELF|IN_MOVE_SELF);
pa_xfree(dev_snd);
if (r < 0) {
pa_log("inotify_add_watch() failed: %s", pa_cstrerror(errno));
int saved_errno = errno;
pa_close(u->inotify_fd);
u->inotify_fd = -1;
if (saved_errno == ENOENT)
return 0;
pa_log("inotify_add_watch() failed: %s", pa_cstrerror(saved_errno));
return -1;
}