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https://gitlab.freedesktop.org/pipewire/pipewire.git
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conf: Load and stack all config files.
Load and parse config files in the following order: $PIPEWIRE_CONFIG_DIR or /usr/share/pipewire /etc/pipewire $XDG_CONFIG_DIR or ~/.config/pipewire This ensure we always load a working base config and reduce the chances of failing because of a back user config file. The user config file now only needs to contain the section that needs the be changed. See #207
This commit is contained in:
Wim Taymans
parent
d09df66aec
commit
db44fe47ee
1 changed files with 98 additions and 78 deletions
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@ -64,63 +64,78 @@ static int make_path(char *path, int size, const char *paths[])
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return 0;
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}
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static int get_read_path(char *path, size_t size, const char *prefix, const char *name)
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static int get_read_path(char *path, size_t size, const char *prefix, const char *name,
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bool useronly, uint32_t *state)
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{
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const char *dir;
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char buffer[4096];
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if (prefix[0] == '/') {
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const char *paths[] = { prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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return -ENOENT;
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}
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if (pw_check_option("no-config", "true"))
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goto no_config;
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dir = getenv("PIPEWIRE_CONFIG_DIR");
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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dir = getenv("XDG_CONFIG_HOME");
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if (dir != NULL) {
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const char *paths[] = { dir, "pipewire", prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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dir = getenv("HOME");
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if (dir == NULL) {
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struct passwd pwd, *result = NULL;
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if (getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &result) == 0)
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dir = result ? result->pw_dir : NULL;
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}
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if (dir != NULL) {
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const char *paths[] = { dir, ".config", "pipewire", prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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dir = PIPEWIRE_CONFIG_DIR;
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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no_config:
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dir = PIPEWIRE_CONFDATADIR;
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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while (true) {
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switch ((*state)++) {
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case 0:
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if (prefix[0] == '/') {
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const char *paths[] = { prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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return -ENOENT;
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}
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break;
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case 1:
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if (useronly)
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break;
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dir = getenv("PIPEWIRE_CONFIG_DIR");
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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dir = PIPEWIRE_CONFDATADIR;
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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break;
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case 2:
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if (pw_check_option("no-config", "true"))
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return 0;
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if (useronly)
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break;
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dir = PIPEWIRE_CONFIG_DIR;
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if (dir != NULL) {
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const char *paths[] = { dir, prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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break;
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case 3:
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dir = getenv("XDG_CONFIG_HOME");
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if (dir != NULL) {
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const char *paths[] = { dir, "pipewire", prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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dir = getenv("HOME");
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if (dir == NULL) {
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struct passwd pwd, *result = NULL;
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if (getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &result) == 0)
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dir = result ? result->pw_dir : NULL;
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}
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if (dir != NULL) {
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const char *paths[] = { dir, ".config", "pipewire", prefix, name, NULL };
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if (make_path(path, size, paths) == 0 &&
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access(path, R_OK) == 0)
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return 1;
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}
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break;
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default:
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return 0;
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}
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}
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return 0;
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}
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@ -242,53 +257,58 @@ error:
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return res;
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}
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static int conf_load(const char *prefix, const char *name, struct pw_properties *conf)
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static int conf_load(const char *prefix, const char *name, bool useronly, struct pw_properties *conf)
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{
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char path[PATH_MAX], *data;
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struct stat sbuf;
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int fd;
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int fd, count = 0;
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uint32_t state = 0;
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if (prefix == NULL) {
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prefix = name;
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name = NULL;
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}
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if (get_read_path(path, sizeof(path), prefix, name) == 0) {
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pw_log_debug(NAME" %p: can't load config '%s': %m", conf, path);
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while (true) {
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if (get_read_path(path, sizeof(path), prefix, name, useronly, &state) <= 0)
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break;
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pw_log_info(NAME" %p: loading config '%s'", conf, path);
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if ((fd = open(path, O_CLOEXEC | O_RDONLY)) < 0) {
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pw_log_warn(NAME" %p: error opening '%s': %m", conf, path);
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continue;
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}
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data = NULL;
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if (fstat(fd, &sbuf) < 0) {
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pw_log_warn(NAME" %p: error stat '%s': %m", conf, path);
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} else if ((data = mmap(NULL, sbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED) {
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pw_log_warn(NAME" %p: error mmap '%s': %m", conf, path);
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data = NULL;
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}
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close(fd);
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if (data != NULL) {
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count += pw_properties_update_string(conf, data, sbuf.st_size);
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munmap(data, sbuf.st_size);
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}
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}
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if (count == 0)
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return -ENOENT;
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}
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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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SPA_EXPORT
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int pw_conf_load_conf(const char *prefix, const char *name, struct pw_properties *conf)
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{
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return conf_load(prefix, name, conf);
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return conf_load(prefix, name, false, conf);
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}
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SPA_EXPORT
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int pw_conf_load_state(const char *prefix, const char *name, struct pw_properties *conf)
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{
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return conf_load(prefix, name, conf);
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return conf_load(prefix, name, true, conf);
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}
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/* context.spa-libs = {
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