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bugfix: stop trying to write to a stderr that may not be there
also, tell start_daemon our desired cwd svn:r1170
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5701cc2359
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@ -370,7 +370,7 @@ tor_tls_write(tor_tls *tls, char *cp, int n)
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return r;
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}
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if (err == TOR_TLS_WANTWRITE || err == TOR_TLS_WANTREAD) {
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log_fn(LOG_INFO,"wantwrite or wantread. remembering the number %d.",n);
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// log_fn(LOG_INFO,"wantwrite or wantread. remembering the number %d.",n);
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tls->wantwrite_n = n;
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}
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return err;
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@ -701,7 +701,7 @@ get_uname(void)
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static int start_daemon_called = 0;
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static int finish_daemon_called = 0;
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static int daemon_filedes[2];
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void start_daemon(void)
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void start_daemon(char *desired_cwd)
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{
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pid_t pid;
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@ -709,16 +709,18 @@ void start_daemon(void)
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return;
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start_daemon_called = 1;
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if(!desired_cwd)
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desired_cwd = "/";
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/* Don't hold the wrong FS mounted */
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if (chdir("/") < 0) {
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perror("chdir");
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if (chdir(desired_cwd) < 0) {
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log_fn(LOG_ERR,"chdir to %s failed. Exiting.",desired_cwd);
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exit(1);
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}
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pipe(daemon_filedes);
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pid = fork();
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if (pid < 0) {
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perror("fork");
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log_fn(LOG_ERR,"fork failed. Exiting.");
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exit(1);
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}
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if (pid) { /* Parent */
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@ -760,13 +762,13 @@ void finish_daemon(void)
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if (finish_daemon_called)
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return;
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if (!start_daemon_called)
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start_daemon();
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start_daemon(NULL);
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finish_daemon_called = 1;
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nullfd = open("/dev/null",
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O_CREAT | O_RDWR | O_APPEND);
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if (nullfd < 0) {
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perror("/dev/null");
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log_fn(LOG_ERR,"/dev/null can't be opened. Exiting.");
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exit(1);
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}
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/* close fds linking to invoking terminal, but
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@ -776,7 +778,7 @@ void finish_daemon(void)
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if (dup2(nullfd,0) < 0 ||
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dup2(nullfd,1) < 0 ||
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dup2(nullfd,2) < 0) {
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perror("dup2"); /* Should never happen... */
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log_fn(LOG_ERR,"dup2 failed. Exiting.");
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exit(1);
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}
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write(daemon_filedes[1], &c, sizeof(char)); /* signal success */
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@ -91,7 +91,7 @@ const char *get_uname(void);
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* until finish_daemon is called. (Note: it's safe to call this more
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* than once: calls after the first are ignored.)
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*/
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void start_daemon(void);
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void start_daemon(char *desired_cwd);
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/* Finish putting the process into daemon mode: drop standard fds, and tell
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* the parent process to exit. (Note: it's safe to call this more than once:
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* calls after the first are ignored. Calls start_daemon first if it hasn't
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