Return to sysxattrs.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / rsync / lib

Annotation of embedaddon/rsync/lib/sysxattrs.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Extended attribute support for rsync.
        !             3:  *
        !             4:  * Copyright (C) 2004 Red Hat, Inc.
        !             5:  * Copyright (C) 2003-2008 Wayne Davison
        !             6:  * Written by Jay Fenlason.
        !             7:  *
        !             8:  * This program is free software; you can redistribute it and/or modify
        !             9:  * it under the terms of the GNU General Public License as published by
        !            10:  * the Free Software Foundation; either version 3 of the License, or
        !            11:  * (at your option) any later version.
        !            12:  *
        !            13:  * This program is distributed in the hope that it will be useful,
        !            14:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16:  * GNU General Public License for more details.
        !            17:  *
        !            18:  * You should have received a copy of the GNU General Public License along
        !            19:  * with this program; if not, visit the http://fsf.org website.
        !            20:  */
        !            21: 
        !            22: #include "rsync.h"
        !            23: #include "sysxattrs.h"
        !            24: 
        !            25: #ifdef SUPPORT_XATTRS
        !            26: 
        !            27: #if defined HAVE_LINUX_XATTRS
        !            28: 
        !            29: ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
        !            30: {
        !            31:        return lgetxattr(path, name, value, size);
        !            32: }
        !            33: 
        !            34: ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
        !            35: {
        !            36:        return fgetxattr(filedes, name, value, size);
        !            37: }
        !            38: 
        !            39: int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
        !            40: {
        !            41:        return lsetxattr(path, name, value, size, 0);
        !            42: }
        !            43: 
        !            44: int sys_lremovexattr(const char *path, const char *name)
        !            45: {
        !            46:        return lremovexattr(path, name);
        !            47: }
        !            48: 
        !            49: ssize_t sys_llistxattr(const char *path, char *list, size_t size)
        !            50: {
        !            51:        return llistxattr(path, list, size);
        !            52: }
        !            53: 
        !            54: #elif HAVE_OSX_XATTRS
        !            55: 
        !            56: ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
        !            57: {
        !            58:        return getxattr(path, name, value, size, 0, XATTR_NOFOLLOW);
        !            59: }
        !            60: 
        !            61: ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
        !            62: {
        !            63:        return fgetxattr(filedes, name, value, size, 0, 0);
        !            64: }
        !            65: 
        !            66: int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
        !            67: {
        !            68:        return setxattr(path, name, value, size, 0, XATTR_NOFOLLOW);
        !            69: }
        !            70: 
        !            71: int sys_lremovexattr(const char *path, const char *name)
        !            72: {
        !            73:        return removexattr(path, name, XATTR_NOFOLLOW);
        !            74: }
        !            75: 
        !            76: ssize_t sys_llistxattr(const char *path, char *list, size_t size)
        !            77: {
        !            78:        return listxattr(path, list, size, XATTR_NOFOLLOW);
        !            79: }
        !            80: 
        !            81: #elif HAVE_FREEBSD_XATTRS
        !            82: 
        !            83: ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
        !            84: {
        !            85:        return extattr_get_link(path, EXTATTR_NAMESPACE_USER, name, value, size);
        !            86: }
        !            87: 
        !            88: ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
        !            89: {
        !            90:        return extattr_get_fd(filedes, EXTATTR_NAMESPACE_USER, name, value, size);
        !            91: }
        !            92: 
        !            93: int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
        !            94: {
        !            95:        return extattr_set_link(path, EXTATTR_NAMESPACE_USER, name, value, size);
        !            96: }
        !            97: 
        !            98: int sys_lremovexattr(const char *path, const char *name)
        !            99: {
        !           100:        return extattr_delete_link(path, EXTATTR_NAMESPACE_USER, name);
        !           101: }
        !           102: 
        !           103: ssize_t sys_llistxattr(const char *path, char *list, size_t size)
        !           104: {
        !           105:        unsigned char keylen;
        !           106:        ssize_t off, len = extattr_list_link(path, EXTATTR_NAMESPACE_USER, list, size);
        !           107: 
        !           108:        if (len <= 0 || (size_t)len > size)
        !           109:                return len;
        !           110: 
        !           111:        /* FreeBSD puts a single-byte length before each string, with no '\0'
        !           112:         * terminator.  We need to change this into a series of null-terminted
        !           113:         * strings.  Since the size is the same, we can simply transform the
        !           114:         * output in place. */
        !           115:        for (off = 0; off < len; off += keylen + 1) {
        !           116:                keylen = ((unsigned char*)list)[off];
        !           117:                if (off + keylen >= len) {
        !           118:                        /* Should be impossible, but kernel bugs happen! */
        !           119:                        errno = EINVAL;
        !           120:                        return -1;
        !           121:                }
        !           122:                memmove(list+off, list+off+1, keylen);
        !           123:                list[off+keylen] = '\0';
        !           124:        }
        !           125: 
        !           126:        return len;
        !           127: }
        !           128: 
        !           129: #else
        !           130: 
        !           131: #error You need to create xattr compatibility functions.
        !           132: 
        !           133: #endif
        !           134: 
        !           135: #endif /* SUPPORT_XATTRS */