diff options
author | Michael I. Bushnell <mib@gnu.org> | 1994-01-31 20:11:13 +0000 |
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committer | Michael I. Bushnell <mib@gnu.org> | 1994-01-31 20:11:13 +0000 |
commit | 196e07374a5bf547f1547494f44cede76f582208 (patch) | |
tree | 20c02e5efcab48f15122597651a942b3f7a70ecc | |
parent | 641f9fbadb5e2315d51e47f1d0328276e2922868 (diff) |
Formerly file-chmod.c.~2~
-rw-r--r-- | libdiskfs/file-chmod.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libdiskfs/file-chmod.c b/libdiskfs/file-chmod.c new file mode 100644 index 00000000..cdb6b1c7 --- /dev/null +++ b/libdiskfs/file-chmod.c @@ -0,0 +1,45 @@ +/* libdiskfs implementation of fs.defs: file_chmod + Copyright (C) 1992, 1993, 1994 Free Software Foundation + + 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "priv.h" + +/* Implement file_chmod as described in <hurd/fs.defs>. */ +error_t +diskfs_S_file_chmod (struct protid *cred, + mode_t mode) +{ + mode &= ~(S_IFMT | S_ISPARE); + + CHANGE_NODE_FIELD (cred, + ({ + if (!(err = isowner (np, cred))) + { + if (!isuid (0, cred)) + { + if (S_ISDIR (np->dn_stat.st_mode)) + mode &= ~S_ISVTX; + if (!groupmember (np->dn_stat.st_gid, cred)) + mode &= ~S_ISGID; + if (!isuid (np->dn_stat.st_uid, cred)) + mode &= ~S_ISUID; + } + mode |= ((np->dn_stat.st_mode & (S_IFMT | S_ISPARE))); + np->dn_stat.st_mode = mode; + np->dn_set_ctime = 1; + } + })); +} |