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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
commit | d4fdeab4db0d0e699c8fbbb07f12c4e1f64d0f94 (patch) | |
tree | 72231a38ed1cdd48ac6e02acb8b3917acb9dbcf4 /gnu/acl_entries.c | |
download | tar-tarball-d4fdeab4db0d0e699c8fbbb07f12c4e1f64d0f94.tar.gz |
Diffstat (limited to 'gnu/acl_entries.c')
-rw-r--r-- | gnu/acl_entries.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/gnu/acl_entries.c b/gnu/acl_entries.c new file mode 100644 index 0000000..936a131 --- /dev/null +++ b/gnu/acl_entries.c @@ -0,0 +1,75 @@ +/* Return the number of entries in an ACL. + + Copyright (C) 2002-2003, 2005-2015 Free Software Foundation, Inc. + + 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 3 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, see <http://www.gnu.org/licenses/>. + + Written by Paul Eggert and Andreas Gruenbacher. */ + +#include <config.h> + +#include "acl-internal.h" + +/* This file assumes POSIX-draft like ACLs + (Linux, FreeBSD, Mac OS X, IRIX, Tru64). */ + +/* Return the number of entries in ACL. + Return -1 and set errno upon failure to determine it. */ + +int +acl_entries (acl_t acl) +{ + int count = 0; + + if (acl != NULL) + { +#if HAVE_ACL_FIRST_ENTRY /* Linux, FreeBSD, Mac OS X */ +# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */ + /* acl_get_entry returns 0 when it successfully fetches an entry, + and -1/EINVAL at the end. */ + acl_entry_t ace; + int got_one; + + for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace); + got_one >= 0; + got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace)) + count++; +# else /* Linux, FreeBSD */ + /* acl_get_entry returns 1 when it successfully fetches an entry, + and 0 at the end. */ + acl_entry_t ace; + int got_one; + + for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace); + got_one > 0; + got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace)) + count++; + if (got_one < 0) + return -1; +# endif +#else /* IRIX, Tru64 */ +# if HAVE_ACL_TO_SHORT_TEXT /* IRIX */ + /* Don't use acl_get_entry: it is undocumented. */ + count = acl->acl_cnt; +# endif +# if HAVE_ACL_FREE_TEXT /* Tru64 */ + /* Don't use acl_get_entry: it takes only one argument and does not + work. */ + count = acl->acl_num; +# endif +#endif + } + + return count; +} |