mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-01 22:58:50 -04:00
Implement per client config files
Move the daemon config file loading to a new conf.c file used by the context to load the configuration. This replaces the module profiles and some hacks to move properties around. If there is nothing other specified with $PIPEWIRE_CONFIG_NAME or a property, the client.conf file is loaded as a fallback. Update the session manager config file to load the modules via the config now. Rename the session modules section to another name. Update pipewire-pulse to also load a specific pulse property file. This then makes it pssible to assign specific RT priorities for the pipewire-pulse process.
This commit is contained in:
Wim Taymans
parent
0d56f717bf
commit
c605672d43
17 changed files with 619 additions and 416 deletions
369
src/pipewire/conf.c
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369
src/pipewire/conf.c
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@ -0,0 +1,369 @@
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/* PipeWire
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*
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* Copyright © 2021 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <signal.h>
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#include <getopt.h>
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#include <limits.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <spa/utils/result.h>
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#include <spa/utils/json.h>
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#include <pipewire/impl.h>
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#include "config.h"
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#define NAME "config"
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SPA_EXPORT
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int pw_conf_load(const char *prefix, const char *name, struct pw_properties *conf)
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{
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const char *path;
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char filename[PATH_MAX], *data;
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struct stat sbuf;
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int fd;
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const char *dir;
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dir = getenv("PIPEWIRE_CONFIG_DIR");
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if (dir == NULL)
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dir = PIPEWIRE_CONFIG_DIR;
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if (dir == NULL)
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return -ENOENT;
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if (prefix)
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snprintf(filename, sizeof(filename), "%s/%s/%s",
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dir, prefix, name);
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else
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snprintf(filename, sizeof(filename), "%s/%s",
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dir, name);
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path = filename;
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if ((fd = open(path, O_CLOEXEC | O_RDONLY)) < 0) {
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pw_log_warn(NAME" %p: error loading config '%s': %m", conf, path);
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return -errno;
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}
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pw_log_info(NAME" %p: loading config '%s'", conf, path);
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if (fstat(fd, &sbuf) < 0)
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goto error_close;
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if ((data = mmap(NULL, sbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED)
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goto error_close;
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close(fd);
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pw_properties_update_string(conf, data, sbuf.st_size);
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munmap(data, sbuf.st_size);
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return 0;
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error_close:
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close(fd);
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return -errno;
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}
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static int parse_spa_libs(struct pw_context *context, const char *str)
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{
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struct spa_json it[2];
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char key[512], value[512];
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spa_json_init(&it[0], str, strlen(str));
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if (spa_json_enter_object(&it[0], &it[1]) < 0)
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return -EINVAL;
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while (spa_json_get_string(&it[1], key, sizeof(key)-1) > 0) {
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const char *val;
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if (key[0] == '#') {
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if (spa_json_next(&it[1], &val) <= 0)
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break;
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}
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else if (spa_json_get_string(&it[1], value, sizeof(value)-1) > 0) {
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pw_context_add_spa_lib(context, key, value);
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}
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}
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return 0;
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}
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static int load_module(struct pw_context *context, const char *key, const char *args, const char *flags)
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{
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if (pw_context_load_module(context, key, args, NULL) == NULL) {
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if (errno == ENOENT && flags && strstr(flags, "ifexists") != NULL) {
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pw_log_debug(NAME" %p: skipping unavailable module %s",
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context, key);
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} else if (flags == NULL || strstr(flags, "nofail") == NULL) {
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pw_log_error(NAME" %p: could not load mandatory module \"%s\": %m",
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context, key);
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return -errno;
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} else {
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pw_log_info(NAME" %p: could not load optional module \"%s\": %m",
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context, key);
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}
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}
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return 0;
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}
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static int parse_modules(struct pw_context *context, const char *str)
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{
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struct spa_json it[3];
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char key[512];
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int res = 0;
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spa_json_init(&it[0], str, strlen(str));
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if (spa_json_enter_object(&it[0], &it[1]) < 0)
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return -EINVAL;
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while (spa_json_get_string(&it[1], key, sizeof(key)-1) > 0) {
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const char *val, *aval;
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char *args = NULL, *flags = NULL;
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int len, alen;
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if ((len = spa_json_next(&it[1], &val)) <= 0)
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break;
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if (key[0] == '#')
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continue;
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if (spa_json_is_object(val, len)) {
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char arg[512];
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spa_json_enter(&it[1], &it[2]);
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while (spa_json_get_string(&it[2], arg, sizeof(arg)-1) > 0) {
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if ((alen = spa_json_next(&it[2], &aval)) <= 0)
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break;
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if (strcmp(arg, "args") == 0) {
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if (spa_json_is_container(aval, alen))
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alen = spa_json_container_len(&it[2], aval, alen);
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args = malloc(alen + 1);
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spa_json_parse_string(aval, alen, args);
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} else if (strcmp(arg, "flags") == 0) {
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if (spa_json_is_container(aval, alen))
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alen = spa_json_container_len(&it[2], aval, alen);
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flags = malloc(alen + 1);
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spa_json_parse_string(aval, alen, flags);
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}
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}
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}
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else if (!spa_json_is_null(val, len))
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break;
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res = load_module(context, key, args, flags);
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free(args);
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free(flags);
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if (res < 0)
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break;
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}
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return res;
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}
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static int create_object(struct pw_context *context, const char *key, const char *args, const char *flags)
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{
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struct pw_impl_factory *factory;
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void *obj;
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pw_log_debug("find factory %s", key);
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factory = pw_context_find_factory(context, key);
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if (factory == NULL) {
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if (flags && strstr(flags, "nofail") != NULL)
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return 0;
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pw_log_error("can't find factory %s", key);
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return -ENOENT;
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}
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pw_log_debug("create object with args %s", args);
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obj = pw_impl_factory_create_object(factory,
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NULL, NULL, 0,
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args ? pw_properties_new_string(args) : NULL,
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SPA_ID_INVALID);
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if (obj == NULL) {
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if (flags && strstr(flags, "nofail") != NULL)
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return 0;
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pw_log_error("can't create object from factory %s: %m", key);
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return -errno;
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}
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return 0;
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}
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static int parse_objects(struct pw_context *context, const char *str)
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{
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struct spa_json it[3];
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char key[512];
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int res = 0;
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spa_json_init(&it[0], str, strlen(str));
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if (spa_json_enter_object(&it[0], &it[1]) < 0)
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return -EINVAL;
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while (spa_json_get_string(&it[1], key, sizeof(key)-1) > 0) {
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const char *val, *aval;
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char *args = NULL, *flags = NULL;
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int len, alen;
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if ((len = spa_json_next(&it[1], &val)) <= 0)
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break;
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if (key[0] == '#')
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continue;
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if (spa_json_is_object(val, len)) {
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char arg[512];
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spa_json_enter(&it[1], &it[2]);
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while (spa_json_get_string(&it[2], arg, sizeof(arg)-1) > 0) {
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if ((alen = spa_json_next(&it[2], &aval)) <= 0)
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break;
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if (strcmp(arg, "args") == 0) {
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if (spa_json_is_container(aval, alen))
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alen = spa_json_container_len(&it[2], aval, alen);
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args = malloc(alen + 1);
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spa_json_parse_string(aval, alen, args);
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} else if (strcmp(arg, "flags") == 0) {
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flags = strndup(aval, alen);
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}
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}
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}
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else if (!spa_json_is_null(val, len))
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break;
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res = create_object(context, key, args, flags);
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free(args);
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free(flags);
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if (res < 0)
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break;
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}
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return res;
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}
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static int do_exec(struct pw_context *context, const char *key, const char *args)
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{
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int pid, res, n_args;
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pid = fork();
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if (pid == 0) {
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char *cmd, **argv;
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cmd = spa_aprintf("%s %s", key, args ? args : "");
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argv = pw_split_strv(cmd, " \t", INT_MAX, &n_args);
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free(cmd);
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pw_log_info("exec %s '%s'", key, args);
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res = execvp(key, argv);
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pw_free_strv(argv);
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if (res == -1) {
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res = -errno;
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pw_log_error("execvp error '%s': %m", key);
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return res;
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}
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}
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else {
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int status;
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res = waitpid(pid, &status, WNOHANG);
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pw_log_info("exec got pid %d res:%d status:%d", pid, res, status);
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}
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return 0;
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}
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static int parse_exec(struct pw_context *context, const char *str)
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{
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struct spa_json it[3];
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char key[512];
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int res = 0;
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spa_json_init(&it[0], str, strlen(str));
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if (spa_json_enter_object(&it[0], &it[1]) < 0)
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return -EINVAL;
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while (spa_json_get_string(&it[1], key, sizeof(key)-1) > 0) {
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const char *val;
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char *args = NULL;
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int len;
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if ((len = spa_json_next(&it[1], &val)) <= 0)
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break;
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if (key[0] == '#')
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continue;
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if (spa_json_is_object(val, len)) {
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char arg[512], aval[1024];
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spa_json_enter(&it[1], &it[2]);
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while (spa_json_get_string(&it[2], arg, sizeof(arg)-1) > 0) {
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if (spa_json_get_string(&it[2], aval, sizeof(aval)-1) <= 0)
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break;
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if (strcmp(arg, "args") == 0)
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args = strdup(aval);
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}
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}
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else if (!spa_json_is_null(val, len))
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break;
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res = do_exec(context, key, args);
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free(args);
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if (res < 0)
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break;
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}
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return res;
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}
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SPA_EXPORT
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int pw_context_parse_conf_section(struct pw_context *context,
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struct pw_properties *conf, const char *section)
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{
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const char *str;
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int res;
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if ((str = pw_properties_get(conf, section)) == NULL)
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return -ENOENT;
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if (strcmp(section, "spa-libs") == 0)
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res = parse_spa_libs(context, str);
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else if (strcmp(section, "modules") == 0)
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res = parse_modules(context, str);
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else if (strcmp(section, "objects") == 0)
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res = parse_objects(context, str);
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else if (strcmp(section, "exec") == 0)
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res = parse_exec(context, str);
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else
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res = -EINVAL;
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return res;
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}
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