/* Lowers file lock if possible
Always returns 0 to make 'lock = edit_unlock_file (f)' possible */
int
edit_unlock_file (char *fname)
{
char *lockfname, *lock;
struct stat statbuf;
/* Just to be sure */
if (!fname || !*fname)
return 0;
lockfname = g_strconcat (".#", fname, NULL);
/* Check if lock exists */
if (lstat (lockfname, &statbuf) == -1) {
g_free (lockfname);
return 0;
}
lock = lock_get_info (lockfname);
if (lock) {
/* Don't touch if lock is not ours */
if (lock_extract_info (lock)->pid != getpid ()) {
g_free (lockfname);
return 0;
}
}
/* Remove lock */
unlink (lockfname);
g_free (lockfname);
return 0;
}
int
unlock_file (const vfs_path_t * fname_vpath)
{
char *lockfname, *lock;
struct stat statbuf;
const char *elpath;
if (fname_vpath == NULL)
return 0;
elpath = vfs_path_get_by_index (fname_vpath, 0)->path;
/* Just to be sure (and don't lock new file) */
if (*elpath == '\0')
return 0;
lockfname = lock_build_symlink_name (fname_vpath);
if (lockfname == NULL)
return 0;
/* Check if lock exists */
if (lstat (lockfname, &statbuf) == -1)
goto ret;
lock = lock_get_info (lockfname);
if (lock != NULL)
{
/* Don't touch if lock is not ours */
if (lock_extract_info (lock)->pid != getpid ())
goto ret;
}
/* Remove lock */
unlink (lockfname);
ret:
g_free (lockfname);
return 0;
}
/* Tries to raise file lock
Returns 1 on success, 0 on failure, -1 if abort
Warning: Might do screen refresh and lose edit->force */
int
edit_lock_file (char *fname)
{
char *lockfname, *newlock, *msg, *lock;
struct stat statbuf;
struct lock_s *lockinfo;
/* Just to be sure (and don't lock new file) */
if (!fname || !*fname)
return 0;
/* Locking on VFS is not supported */
if (!vfs_file_is_local (fname))
return 0;
/* Check if already locked */
lockfname = g_strconcat (".#", fname, NULL);
if (lstat (lockfname, &statbuf) == 0) {
lock = lock_get_info (lockfname);
if (!lock) {
g_free (lockfname);
return 0;
}
lockinfo = lock_extract_info (lock);
/* Check if locking process alive, ask user if required */
if (!lockinfo->pid
|| !(kill (lockinfo->pid, 0) == -1 && errno == ESRCH)) {
msg =
g_strdup_printf (_
("File \"%s\" is already being edited\n"
"User: %s\nProcess ID: %d"), fname,
lockinfo->who, lockinfo->pid);
/* TODO: Implement "Abort" - needs to rewind undo stack */
switch (edit_query_dialog2
(_("File locked"), msg, _("&Grab lock"),
_("&Ignore lock"))) {
case 0:
break;
case 1:
case -1:
g_free (lockfname);
g_free (msg);
return 0;
}
g_free (msg);
}
unlink (lockfname);
}
/* Create lock symlink */
newlock = lock_build_name (fname);
if (symlink (newlock, lockfname) == -1) {
g_free (lockfname);
g_free (newlock);
return 0;
}
g_free (lockfname);
g_free (newlock);
return 1;
}
int
lock_file (const vfs_path_t * fname_vpath)
{
char *lockfname = NULL, *newlock, *msg, *lock;
struct stat statbuf;
struct lock_s *lockinfo;
gboolean is_local;
gboolean symlink_ok = FALSE;
const char *elpath;
if (fname_vpath == NULL)
return 0;
elpath = vfs_path_get_by_index (fname_vpath, 0)->path;
/* Just to be sure (and don't lock new file) */
if (*elpath == '\0')
return 0;
/* Locking on VFS is not supported */
is_local = vfs_file_is_local (fname_vpath);
if (is_local)
{
/* Check if already locked */
lockfname = lock_build_symlink_name (fname_vpath);
}
if (!is_local || lockfname == NULL)
return 0;
if (lstat (lockfname, &statbuf) == 0)
{
lock = lock_get_info (lockfname);
if (lock == NULL)
goto ret;
lockinfo = lock_extract_info (lock);
/* Check if locking process alive, ask user if required */
if (lockinfo->pid == 0 || !(kill (lockinfo->pid, 0) == -1 && errno == ESRCH))
{
msg =
g_strdup_printf (_
("File \"%s\" is already being edited.\n"
"User: %s\nProcess ID: %d"), x_basename (lockfname) + 2,
lockinfo->who, (int) lockinfo->pid);
/* TODO: Implement "Abort" - needs to rewind undo stack */
switch (query_dialog
(_("File locked"), msg, D_NORMAL, 2, _("&Grab lock"), _("&Ignore lock")))
{
case 0:
break;
case 1:
case -1:
g_free (msg);
goto ret;
break; /* FIXME: unneeded? */
}
g_free (msg);
}
unlink (lockfname);
}
/* Create lock symlink */
newlock = lock_build_name ();
symlink_ok = (symlink (newlock, lockfname) != -1);
g_free (newlock);
ret:
g_free (lockfname);
return symlink_ok ? 1 : 0;
}
