Mercurial > hg > octave-nkf > gnulib-hg
annotate lib/unlinkdir.c @ 8623:27cfd50b8f6c
Fix missing escape.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Tue, 03 Apr 2007 22:45:13 +0000 |
| parents | 8a1a9361108c |
| children | bbbbbf4cd1c5 |
| rev | line source |
|---|---|
| 5852 | 1 /* unlinkdir.c - determine (and maybe change) whether we can unlink directories |
| 2 | |
|
7302
8a1a9361108c
* _fpending.c: Include <config.h> unconditionally, since we no
Paul Eggert <eggert@cs.ucla.edu>
parents:
6275
diff
changeset
|
3 Copyright (C) 2005, 2006 Free Software Foundation, Inc. |
| 5852 | 4 |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2, or (at your option) | |
| 8 any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software Foundation, | |
| 17 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
| 18 | |
| 19 /* Written by Paul Eggert and Jim Meyering. */ | |
| 20 | |
|
7302
8a1a9361108c
* _fpending.c: Include <config.h> unconditionally, since we no
Paul Eggert <eggert@cs.ucla.edu>
parents:
6275
diff
changeset
|
21 #include <config.h> |
| 5852 | 22 |
| 23 #include "unlinkdir.h" | |
| 24 | |
| 25 #if HAVE_PRIV_H | |
| 26 # include <priv.h> | |
| 27 #endif | |
| 6275 | 28 #include <unistd.h> |
| 5852 | 29 |
| 30 #if ! UNLINK_CANNOT_UNLINK_DIR | |
| 31 | |
| 32 /* Return true if we cannot unlink directories, false if we might be | |
| 33 able to unlink directories. If possible, tell the kernel we don't | |
| 34 want to be able to unlink directories, so that we can return true. */ | |
| 35 | |
| 36 bool | |
| 37 cannot_unlink_dir (void) | |
| 38 { | |
| 39 static bool initialized; | |
| 40 static bool cannot; | |
| 41 | |
| 42 if (! initialized) | |
| 43 { | |
| 44 # if defined PRIV_EFFECTIVE && defined PRIV_SYS_LINKDIR | |
| 45 /* We might be able to unlink directories if we cannot | |
| 46 determine our privileges, or if we have the | |
| 47 PRIV_SYS_LINKDIR privilege and cannot delete it. */ | |
| 48 priv_set_t *pset = priv_allocset (); | |
| 49 if (pset) | |
| 50 { | |
| 51 cannot = | |
| 52 (getppriv (PRIV_EFFECTIVE, pset) == 0 | |
| 53 && (! priv_ismember (pset, PRIV_SYS_LINKDIR) | |
| 54 || (priv_delset (pset, PRIV_SYS_LINKDIR) == 0 | |
| 55 && setppriv (PRIV_SET, PRIV_EFFECTIVE, pset) == 0))); | |
| 56 priv_freeset (pset); | |
| 57 } | |
| 58 # else | |
| 59 /* In traditional Unix, only root can unlink directories. */ | |
| 60 cannot = (geteuid () != 0); | |
| 61 # endif | |
| 62 initialized = true; | |
| 63 } | |
| 64 | |
| 65 return cannot; | |
| 66 } | |
| 67 | |
| 68 #endif |