diff options
Diffstat (limited to 'stow.c')
| -rw-r--r-- | stow.c | 132 |
1 files changed, 132 insertions, 0 deletions
@@ -0,0 +1,132 @@ +/* Hurd unionfs + Copyright (C) 2001, 2002, 2005 Free Software Foundation, Inc. + Written by Gianluca Guida <glguida@gmail.com>. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or * (at your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. */ + +/* Stow mode for unionfs. */ + +#define _GNU_SOURCE + +#include <argp.h> +#include <error.h> + +#include "ulfs.h" +#include "lib.h" +#include "pattern.h" + +struct stow_privdata +{ + struct patternlist *patternlist; + int flags; + int remove; +}; + +static error_t +_stow_registermatchingdirs (char *arg, char *dirpath, void *priv) +{ + error_t err=0; + char *filepath; + + struct stow_privdata *privdata = (struct stow_privdata *) priv ; + + err = patternlist_match (privdata->patternlist, arg); + + if (err) + return err; + + filepath = make_filepath (dirpath, arg); + + debug_msg_send ("adding %s\n", filepath); + + + if (privdata->remove) + { + err = ulfs_unregister (filepath); + if (err == ENOENT) + /* It is not a fatal error, when the user tries to remove + a filesystem, which is not used by unionfs. */ + err = 0; + } + else + err = ulfs_register (filepath, privdata->flags); + if (err) + error (EXIT_FAILURE, err, "ulfs_register"); + + free (filepath); + + return 0; + +} + +static error_t +_stow_scanstowentry (char *arg, char *dirpath, void *priv) +{ + char *filepath = dirpath; + error_t err; + + struct stow_privdata *privdata = (struct stow_privdata *) priv ; + + if (dirpath) + { + char *tmp; + tmp = make_filepath (dirpath, arg); + filepath = make_filepath (tmp, "/"); + free (tmp); + } + + if (patternlist_isempty (privdata->patternlist)) + { + if (privdata->remove) + { + err = ulfs_unregister (filepath); + if (err == ENOENT) + /* It is not a fatal error, when the user tries to remove + a filesystem, which is not used by unionfs. */ + err = 0; + } + else + err = ulfs_register (filepath, privdata->flags); + if (err) + error (EXIT_FAILURE, err, "ulfs_register"); + } + else + { + err = for_each_subdir_priv (filepath, _stow_registermatchingdirs, priv); + } + + free (filepath); + + return err; +} + +error_t +stow_diradd (char *dir, int flags, struct patternlist *patternlist, int remove) +{ + + error_t err; + struct stow_privdata mypriv = + { + .patternlist = patternlist, + .flags = flags, + .remove = remove + }; + + err = for_each_subdir_priv (dir, _stow_scanstowentry, (void *)&mypriv); + + return err; + +} |