static void spawn_win32(void) {
char module_name[WATCHMAN_NAME_MAX];
GetModuleFileName(NULL, module_name, sizeof(module_name));
char *argv[MAX_DAEMON_ARGS] = {
module_name,
"--foreground",
NULL
};
posix_spawn_file_actions_t actions;
posix_spawnattr_t attr;
pid_t pid;
int i;
for (i = 0; daemon_argv[i]; i++) {
append_argv(argv, daemon_argv[i]);
}
posix_spawnattr_init(&attr);
posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETPGROUP);
posix_spawn_file_actions_init(&actions);
posix_spawn_file_actions_addopen(&actions,
STDIN_FILENO, "/dev/null", O_RDONLY, 0);
posix_spawn_file_actions_addopen(&actions,
STDOUT_FILENO, log_name, O_WRONLY|O_CREAT|O_APPEND, 0600);
posix_spawn_file_actions_adddup2(&actions,
STDOUT_FILENO, STDERR_FILENO);
posix_spawnp(&pid, argv[0], &actions, &attr, argv, environ);
posix_spawnattr_destroy(&attr);
posix_spawn_file_actions_destroy(&actions);
}
static void spawn_via_gimli(void)
{
char *argv[MAX_DAEMON_ARGS] = {
GIMLI_MONITOR_PATH,
#ifdef WATCHMAN_STATE_DIR
"--trace-dir=" WATCHMAN_STATE_DIR "/traces",
#endif
"--pidfile", pid_file,
"watchman",
"--foreground",
NULL
};
posix_spawn_file_actions_t actions;
posix_spawnattr_t attr;
pid_t pid;
int i;
for (i = 0; daemon_argv[i]; i++) {
append_argv(argv, daemon_argv[i]);
}
close_random_fds();
posix_spawnattr_init(&attr);
posix_spawn_file_actions_init(&actions);
posix_spawn_file_actions_addopen(&actions,
STDOUT_FILENO, log_name, O_WRONLY|O_CREAT|O_APPEND, 0600);
posix_spawn_file_actions_adddup2(&actions,
STDOUT_FILENO, STDERR_FILENO);
posix_spawnp(&pid, argv[0], &actions, &attr, argv, environ);
posix_spawnattr_destroy(&attr);
posix_spawn_file_actions_destroy(&actions);
}
// Spawn watchman via a site-specific spawn helper program.
// We'll pass along any daemon-appropriate arguments that
// we noticed during argument parsing.
static void spawn_site_specific(const char *spawner)
{
char *argv[MAX_DAEMON_ARGS] = {
(char*)spawner,
NULL
};
posix_spawn_file_actions_t actions;
posix_spawnattr_t attr;
pid_t pid;
int i;
int res, err;
for (i = 0; daemon_argv[i]; i++) {
append_argv(argv, daemon_argv[i]);
}
close_random_fds();
posix_spawnattr_init(&attr);
posix_spawn_file_actions_init(&actions);
posix_spawn_file_actions_addopen(&actions,
STDOUT_FILENO, log_name, O_WRONLY|O_CREAT|O_APPEND, 0600);
posix_spawn_file_actions_adddup2(&actions,
STDOUT_FILENO, STDERR_FILENO);
res = posix_spawnp(&pid, argv[0], &actions, &attr, argv, environ);
err = errno;
posix_spawnattr_destroy(&attr);
posix_spawn_file_actions_destroy(&actions);
if (res) {
w_log(W_LOG_FATAL, "Failed to spawn watchman via `%s': %s\n", spawner,
strerror(err));
}
if (waitpid(pid, &res, 0) == -1) {
w_log(W_LOG_FATAL, "Failed waiting for %s: %s\n", spawner, strerror(errno));
}
if (WIFEXITED(res) && WEXITSTATUS(res) == 0) {
return;
}
if (WIFEXITED(res)) {
w_log(W_LOG_FATAL, "%s: exited with status %d\n", spawner,
WEXITSTATUS(res));
} else if (WIFSIGNALED(res)) {
w_log(W_LOG_FATAL, "%s: signaled with %d\n", spawner, WTERMSIG(res));
}
w_log(W_LOG_ERR, "%s: failed to start, exit status %d\n", spawner, res);
}
static void spawn_via_launchd(void)
{
char watchman_path[WATCHMAN_NAME_MAX];
uint32_t size = sizeof(watchman_path);
char plist_path[WATCHMAN_NAME_MAX];
FILE *fp;
struct passwd *pw;
uid_t uid;
char *argv[MAX_DAEMON_ARGS] = {
"/bin/launchctl",
"load",
"-F",
NULL
};
posix_spawnattr_t attr;
pid_t pid;
int res;
close_random_fds();
if (_NSGetExecutablePath(watchman_path, &size) == -1) {
w_log(W_LOG_ERR, "_NSGetExecutablePath: path too long; size %u\n", size);
abort();
}
uid = getuid();
pw = getpwuid(uid);
if (!pw) {
w_log(W_LOG_ERR, "getpwuid(%d) failed: %s. I don't know who you are\n",
uid, strerror(errno));
abort();
}
snprintf(plist_path, sizeof(plist_path),
"%s/Library/LaunchAgents", pw->pw_dir);
// Best effort attempt to ensure that the agents dir exists. We'll detect
// and report the failure in the fopen call below.
mkdir(plist_path, 0755);
snprintf(plist_path, sizeof(plist_path),
"%s/Library/LaunchAgents/com.github.facebook.watchman.plist", pw->pw_dir);
if (access(plist_path, R_OK) == 0) {
// Unload any that may already exist, as it is likely wrong
char *unload_argv[MAX_DAEMON_ARGS] = {
"/bin/launchctl",
"unload",
NULL
};
append_argv(unload_argv, plist_path);
errno = posix_spawnattr_init(&attr);
if (errno != 0) {
w_log(W_LOG_FATAL, "posix_spawnattr_init: %s\n", strerror(errno));
}
res = posix_spawnp(&pid, unload_argv[0], NULL, &attr, unload_argv, environ);
if (res == 0) {
waitpid(pid, &res, 0);
}
posix_spawnattr_destroy(&attr);
// Forcibly remove the plist. In some cases it may have some attributes
// set that prevent launchd from loading it. This can happen where
// the system was re-imaged or restored from a backup
unlink(plist_path);
}
fp = fopen(plist_path, "w");
if (!fp) {
w_log(W_LOG_ERR, "Failed to open %s for write: %s\n",
plist_path, strerror(errno));
abort();
}
compute_file_name(&pid_file, compute_user_name(), "pid", "pidfile");
fprintf(fp,
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" "
"\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
"<plist version=\"1.0\">\n"
"<dict>\n"
" <key>Label</key>\n"
" <string>com.github.facebook.watchman</string>\n"
" <key>Disabled</key>\n"
" <false/>\n"
" <key>ProgramArguments</key>\n"
" <array>\n"
" <string>%s</string>\n"
" <string>--foreground</string>\n"
" <string>--logfile=%s</string>\n"
" <string>--log-level=%d</string>\n"
" <string>--sockname=%s</string>\n"
" <string>--statefile=%s</string>\n"
" <string>--pidfile=%s</string>\n"
" </array>\n"
" <key>Sockets</key>\n"
" <dict>\n"
" <key>sock</key>\n" // coupled with get_listener_socket_from_launchd
" <dict>\n"
" <key>SockPathName</key>\n"
" <string>%s</string>\n"
" <key>SockPathMode</key>\n"
" <integer>%d</integer>\n"
" </dict>\n"
" </dict>\n"
" <key>KeepAlive</key>\n"
" <dict>\n"
" <key>Crashed</key>\n"
" <true/>\n"
" </dict>\n"
" <key>RunAtLoad</key>\n"
" <true/>\n"
" <key>EnvironmentVariables</key>\n"
" <dict>\n"
" <key>PATH</key>\n"
" <string><![CDATA[%s]]></string>\n"
" </dict>\n"
" <key>ProcessType</key>\n"
" <string>Interactive</string>\n"
" <key>Nice</key>\n"
" <integer>-5</integer>\n"
"</dict>\n"
"</plist>\n",
watchman_path, log_name, log_level, sock_name,
watchman_state_file, pid_file, sock_name, 0600,
getenv("PATH"));
fclose(fp);
// Don't rely on umask, ensure we have the correct perms
chmod(plist_path, 0644);
append_argv(argv, plist_path);
errno = posix_spawnattr_init(&attr);
if (errno != 0) {
w_log(W_LOG_FATAL, "posix_spawnattr_init: %s\n", strerror(errno));
}
res = posix_spawnp(&pid, argv[0], NULL, &attr, argv, environ);
if (res) {
w_log(W_LOG_FATAL, "Failed to spawn watchman via launchd: %s\n",
strerror(errno));
}
posix_spawnattr_destroy(&attr);
if (waitpid(pid, &res, 0) == -1) {
w_log(W_LOG_FATAL, "Failed waiting for launchctl load: %s\n",
strerror(errno));
}
if (WIFEXITED(res) && WEXITSTATUS(res) == 0) {
return;
}
// Most likely cause is "headless" operation with no GUI context
if (WIFEXITED(res)) {
w_log(W_LOG_ERR, "launchctl: exited with status %d\n", WEXITSTATUS(res));
} else if (WIFSIGNALED(res)) {
w_log(W_LOG_ERR, "launchctl: signaled with %d\n", WTERMSIG(res));
}
w_log(W_LOG_ERR, "Falling back to daemonize\n");
daemonize();
}
static void spawn_via_launchd(void)
{
char watchman_path[WATCHMAN_NAME_MAX];
uint32_t size = sizeof(watchman_path);
char plist_path[WATCHMAN_NAME_MAX];
FILE *fp;
struct passwd *pw;
uid_t uid;
char *argv[MAX_DAEMON_ARGS] = {
"/bin/launchctl",
"load",
"-F",
NULL
};
posix_spawnattr_t attr;
pid_t pid;
int res;
if (_NSGetExecutablePath(watchman_path, &size) == -1) {
w_log(W_LOG_ERR, "_NSGetExecutablePath: path too long; size %u\n", size);
abort();
}
uid = getuid();
pw = getpwuid(uid);
if (!pw) {
w_log(W_LOG_ERR, "getpwuid(%d) failed: %s. I don't know who you are\n",
uid, strerror(errno));
abort();
}
snprintf(plist_path, sizeof(plist_path),
"%s/Library/LaunchAgents", pw->pw_dir);
// Best effort attempt to ensure that the agents dir exists. We'll detect
// and report the failure in the fopen call below.
mkdir(plist_path, 0755);
snprintf(plist_path, sizeof(plist_path),
"%s/Library/LaunchAgents/com.github.facebook.watchman.plist", pw->pw_dir);
fp = fopen(plist_path, "w");
if (!fp) {
w_log(W_LOG_ERR, "Failed to open %s for write: %s\n",
plist_path, strerror(errno));
abort();
}
fprintf(fp,
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" "
"\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
"<plist version=\"1.0\">\n"
"<dict>\n"
" <key>Label</key>\n"
" <string>com.github.facebook.watchman</string>\n"
" <key>Disabled</key>\n"
" <false/>\n"
" <key>ProgramArguments</key>\n"
" <array>\n"
" <string>%s</string>\n"
" <string>--foreground</string>\n"
" <string>--logfile=%s</string>\n"
" <string>--sockname=%s</string>\n"
" <string>--statefile=%s</string>\n"
" </array>\n"
" <key>Sockets</key>\n"
" <dict>\n"
" <key>sock</key>\n" // coupled with get_listener_socket_from_launchd
" <dict>\n"
" <key>SockPathName</key>\n"
" <string>%s</string>\n"
" </dict>\n"
" </dict>\n"
" <key>KeepAlive</key>\n"
" <dict>\n"
" <key>Crashed</key>\n"
" <true/>\n"
" </dict>\n"
" <key>RunAtLoad</key>\n"
" <false/>\n"
"</dict>\n"
"</plist>\n",
watchman_path, log_name, sock_name, watchman_state_file, sock_name);
fclose(fp);
append_argv(argv, plist_path);
errno = posix_spawnattr_init(&attr);
if (errno != 0) {
w_log(W_LOG_FATAL, "posix_spawnattr_init: %s\n", strerror(errno));
}
res = posix_spawnp(&pid, argv[0], NULL, &attr, argv, environ);
if (res) {
w_log(W_LOG_FATAL, "Failed to spawn watchman via launchd: %s\n",
strerror(errno));
}
posix_spawnattr_destroy(&attr);
if (waitpid(pid, &res, 0) == -1) {
w_log(W_LOG_FATAL, "Failed waiting for launchctl load: %s\n",
strerror(errno));
}
if (WIFEXITED(res) && WEXITSTATUS(res) == 0) {
return;
}
// Most likely cause is "headless" operation with no GUI context
if (WIFEXITED(res)) {
w_log(W_LOG_ERR, "launchctl: exited with status %d\n", WEXITSTATUS(res));
} else if (WIFSIGNALED(res)) {
w_log(W_LOG_ERR, "launchctl: signalled with %d\n", WTERMSIG(res));
}
w_log(W_LOG_ERR, "Falling back to daemonize\n");
daemonize();
}