diff options
Diffstat (limited to 'src/io.c')
| -rwxr-xr-x | src/io.c | 53 |
1 files changed, 50 insertions, 3 deletions
@@ -1,4 +1,4 @@ -/* $calcurse: io.c,v 1.59 2009/06/01 08:04:04 culot Exp $ */ +/* $calcurse: io.c,v 1.60 2009/06/21 18:16:22 culot Exp $ */ /* * Calcurse - text-based organizer @@ -679,7 +679,8 @@ io_init (char *cfile, char *datadir) (void)snprintf (path_conf, BUFSIZ, "%s/" CONF_PATH_NAME, home); (void)snprintf (path_notes, BUFSIZ, "%s/" NOTES_DIR_NAME, home); (void)snprintf (path_apts, BUFSIZ, "%s/" APTS_PATH_NAME, home); - (void)snprintf (path_keys, BUFSIZ, "%s/" KEYS_PATH_NAME, home); + (void)snprintf (path_keys, BUFSIZ, "%s/" KEYS_PATH_NAME, home); + (void)snprintf (path_lock, BUFSIZ, "%s/" LOCK_PATH_NAME, home); } else { @@ -691,7 +692,8 @@ io_init (char *cfile, char *datadir) (void)snprintf (path_dir, BUFSIZ, "%s/" DIR_NAME, home); (void)snprintf (path_todo, BUFSIZ, "%s/" TODO_PATH, home); (void)snprintf (path_conf, BUFSIZ, "%s/" CONF_PATH, home); - (void)snprintf (path_keys, BUFSIZ, "%s/" KEYS_PATH, home); + (void)snprintf (path_keys, BUFSIZ, "%s/" KEYS_PATH, home); + (void)snprintf (path_lock, BUFSIZ, "%s/" LOCK_PATH, home); (void)snprintf (path_notes, BUFSIZ, "%s/" NOTES_DIR, home); if (cfile == NULL) { @@ -2820,3 +2822,48 @@ io_stop_psave_thread (void) if (io_t_psave) pthread_cancel (io_t_psave); } + +/* + * This sets a lock file to prevent from having two different instances of + * calcurse running. + * If the lock cannot be obtained, then warn the user and exit calcurse. + * Else, create a .calcurse.lock file in the user defined directory, which + * will be removed when calcurse exits. + * + * Note: when creating the lock file, the interactive mode is not initialized + * yet. + */ +void +io_set_lock (void) +{ + FILE *lock; + + if ((lock = fopen (path_lock, "r")) != NULL) + { + (void)fprintf (stderr, + _("\nWARNING: it seems that another calcurse instance is " + "already running.\n" + "If this is not the case, please remove the following " + "lock file: \n\"%s\"\n" + "and restart calcurse.\n"), path_lock); + exit_calcurse (EXIT_FAILURE); + } + else + { + if ((lock = fopen (path_lock, "w")) == NULL) + { + (void)fprintf (stderr, _("FATAL ERROR: could not create %s: %s\n"), + path_lock, strerror (errno)); + exit_calcurse (EXIT_FAILURE); + } + (void)fclose (lock); + } +} + +/* Used when calcurse exits to remove the lock file. */ +void +io_unset_lock (void) +{ + if (unlink (path_lock) != 0) + EXIT (_("Could not remove lock file: %s\n"), strerror (errno)); +} |