mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-01 22:58:50 -04:00
Implement config/state file handling
Make methods to load_config and load/save state. For now the config and state directories are the same but it might not be. Implement the search path for all config/state files as: $XDG_CONFIG_HOME/[$prefix]/$name $HOME/.config/[$prefix]/$name $PIPEWIRE_CONFIG_DIR/pipewire/[$prefix]/$name /etc/pipewire/[$prefix]/$name Make some config files for jack and RT clients. Make pw-cat use the client-rt config. Use core state and config management in media-session. Move all session manager state and config files to the build dir and set the PIPEWIRE_CONFIG_DIR to this build dir.
This commit is contained in:
Wim Taymans
parent
c605672d43
commit
fc90a4e48a
13 changed files with 380 additions and 216 deletions
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@ -22,6 +22,8 @@
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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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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@ -31,38 +33,205 @@
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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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#if HAVE_PWD_H
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#include <pwd.h>
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#endif
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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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static int make_path(char *path, int size, const char *paths[])
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{
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int i, len;
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char *p = path;
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for (i = 0; paths[i] != NULL; i++) {
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len = snprintf(p, size, "%s%s", i == 0 ? "" : "/", paths[i]);
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if (len < 0)
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return -errno;
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if (len >= size)
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return -ENOSPC;
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p += len;
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size -= len;
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}
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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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{
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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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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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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 = 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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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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return 0;
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}
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static int ensure_path(char *path, int size, const char *paths[])
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{
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int i, len, res;
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char *p = path;
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for (i = 0; paths[i] != NULL; i++) {
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len = snprintf(p, size, "%s/", paths[i]);
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if (len < 0)
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return -errno;
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if (len >= size)
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return -ENOSPC;
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p += len;
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size -= len;
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if ((res = access(path, R_OK | W_OK | X_OK)) < 0) {
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if (errno != ENOENT)
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return -errno;
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if ((res = mkdir(path, 0700)) < 0) {
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pw_log_info("Can't create directory %s: %m", path);
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return -errno;
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}
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if ((res = access(path, R_OK | W_OK | X_OK)) < 0)
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return -errno;
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pw_log_info("created directory %s", path);
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}
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}
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return 0;
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}
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static int open_write_dir(char *path, int size, const char *prefix)
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{
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const char *dir;
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char buffer[4096];
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int res;
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if (prefix != NULL && prefix[0] == '/') {
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const char *paths[] = { prefix, NULL };
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if (ensure_path(path, size, paths) == 0)
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goto found;
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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, NULL };
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if (ensure_path(path, size, paths) == 0)
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goto found;
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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, NULL };
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if (ensure_path(path, size, paths) == 0)
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goto found;
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}
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return -ENOENT;
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found:
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if ((res = open(path, O_CLOEXEC | O_DIRECTORY | O_PATH)) < 0) {
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pw_log_error("Can't open state directory %s: %m", path);
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return -errno;
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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_conf_save_state(const char *prefix, const char *name, struct pw_properties *conf)
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{
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const struct spa_dict_item *it;
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char path[PATH_MAX];
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char *tmp_name;
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int res, sfd, fd;
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FILE *f;
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if ((sfd = open_write_dir(path, sizeof(path), prefix)) < 0)
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return sfd;
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tmp_name = alloca(strlen(name)+5);
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sprintf(tmp_name, "%s.tmp", name);
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if ((fd = openat(sfd, tmp_name, O_CLOEXEC | O_CREAT | O_WRONLY | O_TRUNC, 0700)) < 0) {
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pw_log_error("can't open file '%s': %m", tmp_name);
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res = -errno;
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goto error;
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}
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f = fdopen(fd, "w");
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fprintf(f, "{ \n");
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spa_dict_for_each(it, &conf->dict) {
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char key[1024];
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if (spa_json_encode_string(key, sizeof(key)-1, it->key) >= (int)sizeof(key)-1)
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continue;
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fprintf(f, " %s: %s\n", key, it->value);
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}
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fprintf(f, "}\n");
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fclose(f);
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if (renameat(sfd, tmp_name, sfd, name) < 0) {
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pw_log_error("can't rename temp file '%s': %m", tmp_name);
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res = -errno;
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goto error;
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}
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res = 0;
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pw_log_info(NAME" %p: saved state '%s%s'", conf, path, name);
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error:
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close(sfd);
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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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{
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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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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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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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}
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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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@ -85,6 +254,18 @@ error_close:
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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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}
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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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}
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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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