Add -x option for removing all exported connections
This commit is contained in:
Takashi Iwai
parent
9281f6b8e8
commit
c786b1b6d5
2 changed files with 134 additions and 19 deletions
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@ -1,4 +1,4 @@
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.TH aconnect 1 "January 1, 2000"
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.TH aconnect 1 "August 31, 2000"
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.LO 1
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.SH NAME
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aconnect \- ALSA sequencer connection manager
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@ -9,6 +9,9 @@ aconnect \- ALSA sequencer connection manager
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.br
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.B aconnect
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\-i|-o [-options]
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.br
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.B aconnect
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\-x
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.SH DESCRIPTION
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.B aconnect
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@ -59,6 +62,12 @@ client 64: '0: MIDI Synth' [group=] [type=kernel]
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Similary, to see the output ports, use
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.B \-o
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flag.
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.PP
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You can remove all existing exported connections using
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.B \-x
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option. This function is useful for terminating the ALSA drivers,
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because the modules with sequencer connections cannot be unloaded
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unless their connections are removed.
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.SH OPTIONS
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.SS CONNNECTION MANAGEMENT
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@ -120,8 +129,13 @@ and
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mean the connection includes real-time and tick conversion on the listed
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queue, respectively.
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.SS REMOVE ALL CONNECTIONS
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.TP
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.B \-x, --removeall
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Remove all exported connections.
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.SH "SEE ALSO"
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aseqnet(1), aseqview(1)
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.SH AUTHOR
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Takashi Iwai <iwai@ww.uni-erlangen.de>.
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Takashi Iwai <tiwai@suse.de>
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@ -44,6 +44,8 @@ static void usage(void)
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fprintf(stderr, " -o,--output list output (writable) ports\n");
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fprintf(stderr, " -g,--group name specify the group name\n");
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fprintf(stderr, " -l,--list list current connections of each port\n");
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fprintf(stderr, " * Remove all exported connections\n");
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fprintf(stderr, " -x, --removeall\n");
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}
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/*
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@ -116,13 +118,15 @@ static void list_subscribers(snd_seq_t *seq, int client, int port)
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}
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/*
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* list all ports
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* search all ports
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*/
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static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
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typedef void (*action_func_t)(snd_seq_t *seq, snd_seq_client_info_t *cinfo, snd_seq_port_info_t *pinfo, int count);
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static void do_search_port(snd_seq_t *seq, char *group, int perm, action_func_t do_action)
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{
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snd_seq_client_info_t cinfo;
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snd_seq_port_info_t pinfo;
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int client_printed;
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int count;
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cinfo.client = -1;
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cinfo.name[0] = 0;
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@ -133,18 +137,11 @@ static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
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pinfo.port = -1;
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pinfo.name[0] = 0;
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strncpy(pinfo.group, group, sizeof(pinfo.group));
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client_printed = 0;
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count = 0;
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while (snd_seq_query_next_port(seq, &pinfo) >= 0) {
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if (check_permission(&pinfo, group, perm)) {
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if (! client_printed) {
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printf("client %d: '%s' [group=%s] [type=%s]\n",
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cinfo.client, cinfo.name, cinfo.group,
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(cinfo.type == USER_CLIENT ? "user" : "kernel"));
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client_printed = 1;
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}
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printf(" %3d '%-16s' [group=%s]\n", pinfo.port, pinfo.name, pinfo.group);
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if (list_subs)
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list_subscribers(seq, pinfo.client, pinfo.port);
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do_action(seq, &cinfo, &pinfo, count);
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count++;
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}
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/* reset query names */
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pinfo.name[0] = 0;
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@ -157,8 +154,101 @@ static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
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}
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static void print_port(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
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snd_seq_port_info_t *pinfo, int count)
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{
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if (! count) {
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printf("client %d: '%s' [group=%s] [type=%s]\n",
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cinfo->client, cinfo->name, cinfo->group,
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(cinfo->type == USER_CLIENT ? "user" : "kernel"));
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}
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printf(" %3d '%-16s' [group=%s]\n",
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pinfo->port, pinfo->name, pinfo->group);
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}
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static void print_port_and_subs(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
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snd_seq_port_info_t *pinfo, int count)
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{
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print_port(seq, cinfo, pinfo, count);
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list_subscribers(seq, pinfo->client, pinfo->port);
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}
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/*
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* list all ports
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*/
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static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
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{
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if (list_subs)
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do_search_port(seq, group, perm, print_port_and_subs);
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else
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do_search_port(seq, group, perm, print_port);
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}
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/*
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* remove all (exported) connections
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*/
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static void remove_connection(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
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snd_seq_port_info_t *pinfo, int count)
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{
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snd_seq_query_subs_t query;
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memset(&query, 0, sizeof(query));
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query.client = pinfo->client;
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query.port = pinfo->port;
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query.type = SND_SEQ_QUERY_SUBS_READ;
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query.index = 0;
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for (query.index = 0; snd_seq_query_port_subscribers(seq, &query) >= 0;
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query.index++) {
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snd_seq_port_info_t port;
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snd_seq_port_subscribe_t subs;
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if (snd_seq_get_any_port_info(seq, query.addr.client, query.addr.port, &port) < 0)
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continue;
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if (port.capability & SND_SEQ_PORT_CAP_NO_EXPORT)
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continue;
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memset(&subs, 0, sizeof(subs));
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subs.queue = query.queue;
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subs.sender.client = query.client;
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subs.sender.port = query.port;
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subs.dest.client = query.addr.client;
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subs.dest.port = query.addr.port;
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snd_seq_unsubscribe_port(seq, &subs);
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}
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query.type = SND_SEQ_QUERY_SUBS_WRITE;
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query.index = 0;
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for (query.index = 0; snd_seq_query_port_subscribers(seq, &query) >= 0;
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query.index++) {
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snd_seq_port_info_t port;
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snd_seq_port_subscribe_t subs;
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if (snd_seq_get_any_port_info(seq, query.addr.client, query.addr.port, &port) < 0)
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continue;
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if (port.capability & SND_SEQ_PORT_CAP_NO_EXPORT)
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continue;
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memset(&subs, 0, sizeof(subs));
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subs.queue = query.queue;
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subs.sender.client = query.addr.client;
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subs.sender.port = query.addr.port;
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subs.dest.client = query.client;
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subs.dest.port = query.port;
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snd_seq_unsubscribe_port(seq, &subs);
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}
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}
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static void remove_all_connections(snd_seq_t *seq)
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{
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do_search_port(seq, "", 0, remove_connection);
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}
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/*
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* main..
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*/
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enum {
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SUBSCRIBE, UNSUBSCRIBE, LIST_INPUT, LIST_OUTPUT
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SUBSCRIBE, UNSUBSCRIBE, LIST_INPUT, LIST_OUTPUT, REMOVE_ALL
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};
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static struct option long_option[] = {
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@ -170,6 +260,7 @@ static struct option long_option[] = {
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{"tick", 1, NULL, 't'},
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{"exclusive", 0, NULL, 'e'},
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{"list", 0, NULL, 'l'},
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{"removeall", 0, NULL, 'x'},
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{NULL, 0, NULL, 0},
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};
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@ -185,7 +276,7 @@ int main(int argc, char **argv)
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snd_seq_client_info_t cinfo;
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snd_seq_port_subscribe_t subs;
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while ((c = getopt_long(argc, argv, "diog:r:t:el", long_option, NULL)) != -1) {
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while ((c = getopt_long(argc, argv, "diog:r:t:elx", long_option, NULL)) != -1) {
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switch (c) {
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case 'd':
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command = UNSUBSCRIBE;
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@ -215,6 +306,9 @@ int main(int argc, char **argv)
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case 'l':
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list_subs = 1;
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break;
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case 'x':
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command = REMOVE_ALL;
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break;
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default:
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usage();
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exit(1);
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@ -226,16 +320,23 @@ int main(int argc, char **argv)
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return 1;
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}
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if (command == LIST_INPUT) {
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switch (command) {
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case LIST_INPUT:
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list_ports(seq, group, SND_SEQ_PORT_CAP_READ|SND_SEQ_PORT_CAP_SUBS_READ, list_subs);
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snd_seq_close(seq);
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return 0;
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} else if (command == LIST_OUTPUT) {
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case LIST_OUTPUT:
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list_ports(seq, group, SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE, list_subs);
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snd_seq_close(seq);
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return 0;
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case REMOVE_ALL:
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remove_all_connections(seq);
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snd_seq_close(seq);
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return 0;
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}
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/* connection or disconnection */
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if (optind + 2 > argc) {
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snd_seq_close(seq);
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usage();
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