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authorLennart Poettering <lennart@poettering.net>2010-01-14 02:06:52 +0100
committerColin Guthrie <cguthrie@mandriva.org>2010-02-09 22:34:10 +0000
commit63ebd054644f009631e25ad68e93a70415cd0c0c (patch)
tree90a65c602340119684a554aedf3d8b9b8ceaf8df /src
parentc2ab61c54d8b9d9a18a56ce873debf530c7f6d4a (diff)
udev: rework modem detection a bit
Check every single pcm device of a card whether it is a modem.
Diffstat (limited to 'src')
-rw-r--r--src/modules/module-udev-detect.c117
1 files changed, 62 insertions, 55 deletions
diff --git a/src/modules/module-udev-detect.c b/src/modules/module-udev-detect.c
index 4019cd8b..7695d3c7 100644
--- a/src/modules/module-udev-detect.c
+++ b/src/modules/module-udev-detect.c
@@ -103,17 +103,70 @@ static const char *path_get_card_id(const char *path) {
return e + 5;
}
-static const char *pa_udev_get_sysattr(const char *card_idx, const char *name);
+static char *card_get_sysattr(const char *card_idx, const char *name) {
+ struct udev *udev;
+ struct udev_device *card = NULL;
+ char *t, *r = NULL;
+ const char *v;
+
+ pa_assert(card_idx);
+ pa_assert(name);
+
+ if (!(udev = udev_new())) {
+ pa_log_error("Failed to allocate udev context.");
+ goto finish;
+ }
+
+ t = pa_sprintf_malloc("%s/class/sound/card%s", udev_get_sys_path(udev), card_idx);
+ card = udev_device_new_from_syspath(udev, t);
+ pa_xfree(t);
+
+ if (!card) {
+ pa_log_error("Failed to get card object.");
+ goto finish;
+ }
+
+ if ((v = udev_device_get_sysattr_value(card, name)) && *v)
+ r = pa_xstrdup(v);
+
+finish:
+
+ if (card)
+ udev_device_unref(card);
+
+ if (udev)
+ udev_unref(udev);
+
+ return r;
+}
+
+static pa_bool_t pcm_is_modem(const char *card_idx, const char *pcm) {
+ char *sysfs_path, *pcm_class;
+ pa_bool_t is_modem;
+
+ pa_assert(card_idx);
+ pa_assert(pcm);
+
+ /* Check /sys/class/sound/card.../pcmC...../pcm_class. An HDA
+ * modem can be used simultaneously with generic
+ * playback/record. */
+
+ sysfs_path = pa_sprintf_malloc("pcmC%sD%s/pcm_class", card_idx, pcm);
+ pcm_class = card_get_sysattr(card_idx, sysfs_path);
+ is_modem = pcm_class && pa_streq(pcm_class, "modem");
+ pa_xfree(pcm_class);
+ pa_xfree(sysfs_path);
+
+ return is_modem;
+}
static pa_bool_t is_card_busy(const char *id) {
- const char *pcm_class;
- char *card_path = NULL, *pcm_path = NULL, *sub_status = NULL,
- *sysfs_path = NULL;
+ char *card_path = NULL, *pcm_path = NULL, *sub_status = NULL;
DIR *card_dir = NULL, *pcm_dir = NULL;
FILE *status_file = NULL;
size_t len;
struct dirent *space = NULL, *de;
- pa_bool_t busy = FALSE, is_modem = FALSE;
+ pa_bool_t busy = FALSE;
int r;
pa_assert(id);
@@ -131,17 +184,6 @@ static pa_bool_t is_card_busy(const char *id) {
len = offsetof(struct dirent, d_name) + fpathconf(dirfd(card_dir), _PC_NAME_MAX) + 1;
space = pa_xmalloc(len);
- /* Also check /sys/class/sound/card.../pcmC...D6p/pcm_class. An HDA
- * modem can be used simultaneously with generic playback/record. */
-
- pa_xfree(sysfs_path);
- sysfs_path = pa_sprintf_malloc("pcmC%sD6p/pcm_class", id);
-
- pcm_class = pa_udev_get_sysattr(id, sysfs_path);
-
- if (pcm_class && pa_streq(pcm_class, "modem"))
- is_modem = TRUE;
-
for (;;) {
de = NULL;
@@ -156,6 +198,9 @@ static pa_bool_t is_card_busy(const char *id) {
if (!pa_startswith(de->d_name, "pcm"))
continue;
+ if (pcm_is_modem(id, de->d_name + 3))
+ continue;
+
pa_xfree(pcm_path);
pcm_path = pa_sprintf_malloc("%s/%s", card_path, de->d_name);
@@ -197,7 +242,7 @@ static pa_bool_t is_card_busy(const char *id) {
continue;
}
- if (!is_modem && !pa_streq(line, "closed\n")) {
+ if (!pa_streq(line, "closed\n")) {
busy = TRUE;
break;
}
@@ -208,7 +253,6 @@ fail:
pa_xfree(card_path);
pa_xfree(pcm_path);
- pa_xfree(sysfs_path);
pa_xfree(sub_status);
pa_xfree(space);
@@ -610,43 +654,6 @@ static int setup_inotify(struct userdata *u) {
return 0;
}
-static const char *pa_udev_get_sysattr(const char *card_idx, const char *name) {
- struct udev *udev;
- struct udev_device *card = NULL;
- char *t, *r = NULL;
- const char *v;
-
- pa_assert(card_idx);
- pa_assert(name);
-
- if (!(udev = udev_new())) {
- pa_log_error("Failed to allocate udev context.");
- goto finish;
- }
-
- t = pa_sprintf_malloc("%s/class/sound/card%s", udev_get_sys_path(udev), card_idx);
- card = udev_device_new_from_syspath(udev, t);
- pa_xfree(t);
-
- if (!card) {
- pa_log_error("Failed to get card object.");
- goto finish;
- }
-
- if ((v = udev_device_get_sysattr_value(card, name)) && *v)
- r = pa_xstrdup(v);
-
-finish:
-
- if (card)
- udev_device_unref(card);
-
- if (udev)
- udev_unref(udev);
-
- return r;
-}
-
int pa__init(pa_module *m) {
struct userdata *u = NULL;
pa_modargs *ma;