--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ Samba system utilities
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Jeremy Allison 1998-2005
+ Copyright (C) Timur Bakeyev 2005
+ Copyright (C) Bjoern Jacke 2006-2007
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ Samba 3.0.28, modified for netatalk.
+ $Id: ad_ea.c,v 1.1 2009-11-13 06:36:05 didg Exp $
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* linux */
+#if 0
+#define HAVE_ATTR_XATTR_H 1
+#define HAVE_FGETXATTR 1
+#define HAVE_FLISTXATTR 1
+#define HAVE_FREMOVEXATTR 1
+#define HAVE_FSETXATTR 1
+#define HAVE_GETXATTR 1
+#define HAVE_LGETXATTR 1
+#define HAVE_LISTXATTR 1
+#define HAVE_LLISTXATTR 1
+#define HAVE_LREMOVEXATTR 1
+#define HAVE_LSETXATTR 1
+#define HAVE_REMOVEXATTR 1
+#define HAVE_SETXATTR 1
+#define HAVE_SYS_XATTR_H 1
+#endif
+
+#include <sys/types.h>
+
+#if HAVE_ATTR_XATTR_H
+#include <attr/xattr.h>
+#elif HAVE_SYS_XATTR_H
+#include <sys/xattr.h>
+#endif
+
+#ifdef HAVE_SYS_EA_H
+#include <sys/ea.h>
+#endif
+
+#ifdef HAVE_SYS_EXTATTR_H
+#include <sys/extattr.h>
+#endif
+
+#include <atalk/adouble.h>
+#include <atalk/logger.h>
+
+/******** Solaris EA helper function prototypes ********/
+#ifdef HAVE_ATTROPEN
+#define SOLARIS_ATTRMODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
+static int solaris_write_xattr(int attrfd, const char *value, size_t size);
+static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size);
+static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size);
+static int solaris_unlinkat(int attrdirfd, const char *name);
+static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode);
+static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode);
+#endif
+
+/**************************************************************************
+ Wrappers for extented attribute calls. Based on the Linux package with
+ support for IRIX and (Net|Free)BSD also. Expand as other systems have them.
+****************************************************************************/
+
+ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size)
+{
+#if defined(HAVE_GETXATTR)
+#ifndef XATTR_ADD_OPT
+ return getxattr(path, name, value, size);
+#else
+ int options = 0;
+ return getxattr(path, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_GETEA)
+ return getea(path, name, value, size);
+#elif defined(HAVE_EXTATTR_GET_FILE)
+ char *s;
+ ssize_t retval;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+ /*
+ * The BSD implementation has a nasty habit of silently truncating
+ * the returned value to the size of the buffer, so we have to check
+ * that the buffer is large enough to fit the returned value.
+ */
+ if((retval=extattr_get_file(path, attrnamespace, attrname, NULL, 0)) >= 0) {
+ if(retval > size) {
+ errno = ERANGE;
+ return -1;
+ }
+ if((retval=extattr_get_file(path, attrnamespace, attrname, value, size)) >= 0)
+ return retval;
+ }
+
+ LOG(log_maxdebug, logtype_default, "sys_getxattr: extattr_get_file() failed with: %s\n", strerror(errno));
+ return -1;
+#elif defined(HAVE_ATTR_GET)
+ int retval, flags = 0;
+ int valuelength = (int)size;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
+
+ return retval ? retval : valuelength;
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrfd = solaris_attropen(path, name, O_RDONLY, 0);
+ if (attrfd >= 0) {
+ ret = solaris_read_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t size)
+{
+#if defined(HAVE_LGETXATTR)
+ return lgetxattr(path, name, value, size);
+#elif defined(HAVE_GETXATTR) && defined(XATTR_ADD_OPT)
+ int options = XATTR_NOFOLLOW;
+ return getxattr(path, name, value, size, 0, options);
+#elif defined(HAVE_LGETEA)
+ return lgetea(path, name, value, size);
+#elif defined(HAVE_EXTATTR_GET_LINK)
+ char *s;
+ ssize_t retval;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+
+ if((retval=extattr_get_link(path, attrnamespace, attrname, NULL, 0)) >= 0) {
+ if(retval > size) {
+ errno = ERANGE;
+ return -1;
+ }
+ if((retval=extattr_get_link(path, attrnamespace, attrname, value, size)) >= 0)
+ return retval;
+ }
+
+ LOG(log_maxdebug, logtype_default, "sys_lgetxattr: extattr_get_link() failed with: %s\n", strerror(errno));
+ return -1;
+#elif defined(HAVE_ATTR_GET)
+ int retval, flags = ATTR_DONTFOLLOW;
+ int valuelength = (int)size;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
+
+ return retval ? retval : valuelength;
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrfd = solaris_attropen(path, name, O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
+ if (attrfd >= 0) {
+ ret = solaris_read_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size)
+{
+#if defined(HAVE_FGETXATTR)
+#ifndef XATTR_ADD_OPT
+ return fgetxattr(filedes, name, value, size);
+#else
+ int options = 0;
+ return fgetxattr(filedes, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_FGETEA)
+ return fgetea(filedes, name, value, size);
+#elif defined(HAVE_EXTATTR_GET_FD)
+ char *s;
+ ssize_t retval;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+
+ if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
+ if(retval > size) {
+ errno = ERANGE;
+ return -1;
+ }
+ if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
+ return retval;
+ }
+
+ LOG(log_maxdebug, logtype_default, "sys_fgetxattr: extattr_get_fd() failed with: %s\n", strerror(errno));
+ return -1;
+#elif defined(HAVE_ATTR_GETF)
+ int retval, flags = 0;
+ int valuelength = (int)size;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
+
+ return retval ? retval : valuelength;
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
+ if (attrfd >= 0) {
+ ret = solaris_read_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+#if defined(HAVE_EXTATTR_LIST_FILE)
+
+#define EXTATTR_PREFIX(s) (s), (sizeof((s))-1)
+
+static struct {
+ int space;
+ const char *name;
+ size_t len;
+}
+extattr[] = {
+ { EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") },
+ { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") },
+};
+
+typedef union {
+ const char *path;
+ int filedes;
+} extattr_arg;
+
+static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size)
+{
+ ssize_t list_size, total_size = 0;
+ int i, t, len;
+ char *buf;
+ /* Iterate through extattr(2) namespaces */
+ for(t = 0; t < (sizeof(extattr)/sizeof(extattr[0])); t++) {
+ switch(type) {
+#if defined(HAVE_EXTATTR_LIST_FILE)
+ case 0:
+ list_size = extattr_list_file(arg.path, extattr[t].space, list, size);
+ break;
+#endif
+#if defined(HAVE_EXTATTR_LIST_LINK)
+ case 1:
+ list_size = extattr_list_link(arg.path, extattr[t].space, list, size);
+ break;
+#endif
+#if defined(HAVE_EXTATTR_LIST_FD)
+ case 2:
+ list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size);
+ break;
+#endif
+ default:
+ errno = ENOSYS;
+ return -1;
+ }
+ /* Some error happend. Errno should be set by the previous call */
+ if(list_size < 0)
+ return -1;
+ /* No attributes */
+ if(list_size == 0)
+ continue;
+ /* XXX: Call with an empty buffer may be used to calculate
+ necessary buffer size. Unfortunately, we can't say, how
+ many attributes were returned, so here is the potential
+ problem with the emulation.
+ */
+ if(list == NULL) {
+ /* Take the worse case of one char attribute names -
+ two bytes per name plus one more for sanity.
+ */
+ total_size += list_size + (list_size/2 + 1)*extattr[t].len;
+ continue;
+ }
+ /* Count necessary offset to fit namespace prefixes */
+ len = 0;
+ for(i = 0; i < list_size; i += list[i] + 1)
+ len += extattr[t].len;
+
+ total_size += list_size + len;
+ /* Buffer is too small to fit the results */
+ if(total_size > size) {
+ errno = ERANGE;
+ return -1;
+ }
+ /* Shift results back, so we can prepend prefixes */
+ buf = memmove(list + len, list, list_size);
+
+ for(i = 0; i < list_size; i += len + 1) {
+ len = buf[i];
+ strncpy(list, extattr[t].name, extattr[t].len + 1);
+ list += extattr[t].len;
+ strncpy(list, buf + i + 1, len);
+ list[len] = '\0';
+ list += len + 1;
+ }
+ size -= total_size;
+ }
+ return total_size;
+}
+
+#endif
+
+#if defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
+static char attr_buffer[ATTR_MAX_VALUELEN];
+
+static ssize_t irix_attr_list(const char *path, int filedes, char *list, size_t size, int flags)
+{
+ int retval = 0, index;
+ attrlist_cursor_t *cursor = 0;
+ int total_size = 0;
+ attrlist_t * al = (attrlist_t *)attr_buffer;
+ attrlist_ent_t *ae;
+ size_t ent_size, left = size;
+ char *bp = list;
+
+ while (True) {
+ if (filedes)
+ retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+ else
+ retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+ if (retval) break;
+ for (index = 0; index < al->al_count; index++) {
+ ae = ATTR_ENTRY(attr_buffer, index);
+ ent_size = strlen(ae->a_name) + sizeof("user.");
+ if (left >= ent_size) {
+ strncpy(bp, "user.", sizeof("user."));
+ strncat(bp, ae->a_name, ent_size - sizeof("user."));
+ bp += ent_size;
+ left -= ent_size;
+ } else if (size) {
+ errno = ERANGE;
+ retval = -1;
+ break;
+ }
+ total_size += ent_size;
+ }
+ if (al->al_more == 0) break;
+ }
+ if (retval == 0) {
+ flags |= ATTR_ROOT;
+ cursor = 0;
+ while (True) {
+ if (filedes)
+ retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+ else
+ retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+ if (retval) break;
+ for (index = 0; index < al->al_count; index++) {
+ ae = ATTR_ENTRY(attr_buffer, index);
+ ent_size = strlen(ae->a_name) + sizeof("system.");
+ if (left >= ent_size) {
+ strncpy(bp, "system.", sizeof("system."));
+ strncat(bp, ae->a_name, ent_size - sizeof("system."));
+ bp += ent_size;
+ left -= ent_size;
+ } else if (size) {
+ errno = ERANGE;
+ retval = -1;
+ break;
+ }
+ total_size += ent_size;
+ }
+ if (al->al_more == 0) break;
+ }
+ }
+ return (ssize_t)(retval ? retval : total_size);
+}
+
+#endif
+
+ssize_t sys_listxattr (const char *path, char *list, size_t size)
+{
+#if defined(HAVE_LISTXATTR)
+#ifndef XATTR_ADD_OPT
+ return listxattr(path, list, size);
+#else
+ int options = 0;
+ return listxattr(path, list, size, options);
+#endif
+#elif defined(HAVE_LISTEA)
+ return listea(path, list, size);
+#elif defined(HAVE_EXTATTR_LIST_FILE)
+ extattr_arg arg;
+ arg.path = path;
+ return bsd_attr_list(0, arg, list, size);
+#elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
+ return irix_attr_list(path, 0, list, size, 0);
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_list_xattr(attrdirfd, list, size);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+ssize_t sys_llistxattr (const char *path, char *list, size_t size)
+{
+#if defined(HAVE_LLISTXATTR)
+ return llistxattr(path, list, size);
+#elif defined(HAVE_LISTXATTR) && defined(XATTR_ADD_OPT)
+ int options = XATTR_NOFOLLOW;
+ return listxattr(path, list, size, options);
+#elif defined(HAVE_LLISTEA)
+ return llistea(path, list, size);
+#elif defined(HAVE_EXTATTR_LIST_LINK)
+ extattr_arg arg;
+ arg.path = path;
+ return bsd_attr_list(1, arg, list, size);
+#elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
+ return irix_attr_list(path, 0, list, size, ATTR_DONTFOLLOW);
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_list_xattr(attrdirfd, list, size);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+ssize_t sys_flistxattr (int filedes, char *list, size_t size)
+{
+#if defined(HAVE_FLISTXATTR)
+#ifndef XATTR_ADD_OPT
+ return flistxattr(filedes, list, size);
+#else
+ int options = 0;
+ return flistxattr(filedes, list, size, options);
+#endif
+#elif defined(HAVE_FLISTEA)
+ return flistea(filedes, list, size);
+#elif defined(HAVE_EXTATTR_LIST_FD)
+ extattr_arg arg;
+ arg.filedes = filedes;
+ return bsd_attr_list(2, arg, list, size);
+#elif defined(HAVE_ATTR_LISTF)
+ return irix_attr_list(NULL, filedes, list, size, 0);
+#elif defined(HAVE_ATTROPEN)
+ ssize_t ret = -1;
+ int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_list_xattr(attrdirfd, list, size);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+int sys_removexattr (const char *path, const char *name)
+{
+#if defined(HAVE_REMOVEXATTR)
+#ifndef XATTR_ADD_OPT
+ return removexattr(path, name);
+#else
+ int options = 0;
+ return removexattr(path, name, options);
+#endif
+#elif defined(HAVE_REMOVEEA)
+ return removeea(path, name);
+#elif defined(HAVE_EXTATTR_DELETE_FILE)
+ char *s;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+
+ return extattr_delete_file(path, attrnamespace, attrname);
+#elif defined(HAVE_ATTR_REMOVE)
+ int flags = 0;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ return attr_remove(path, attrname, flags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_unlinkat(attrdirfd, name);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+int sys_lremovexattr (const char *path, const char *name)
+{
+#if defined(HAVE_LREMOVEXATTR)
+ return lremovexattr(path, name);
+#elif defined(HAVE_REMOVEXATTR) && defined(XATTR_ADD_OPT)
+ int options = XATTR_NOFOLLOW;
+ return removexattr(path, name, options);
+#elif defined(HAVE_LREMOVEEA)
+ return lremoveea(path, name);
+#elif defined(HAVE_EXTATTR_DELETE_LINK)
+ char *s;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+
+ return extattr_delete_link(path, attrnamespace, attrname);
+#elif defined(HAVE_ATTR_REMOVE)
+ int flags = ATTR_DONTFOLLOW;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ return attr_remove(path, attrname, flags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_unlinkat(attrdirfd, name);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+int sys_fremovexattr (int filedes, const char *name)
+{
+#if defined(HAVE_FREMOVEXATTR)
+#ifndef XATTR_ADD_OPT
+ return fremovexattr(filedes, name);
+#else
+ int options = 0;
+ return fremovexattr(filedes, name, options);
+#endif
+#elif defined(HAVE_FREMOVEEA)
+ return fremoveea(filedes, name);
+#elif defined(HAVE_EXTATTR_DELETE_FD)
+ char *s;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+
+ return extattr_delete_fd(filedes, attrnamespace, attrname);
+#elif defined(HAVE_ATTR_REMOVEF)
+ int flags = 0;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+ return attr_removef(filedes, attrname, flags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
+ if (attrdirfd >= 0) {
+ ret = solaris_unlinkat(attrdirfd, name);
+ close(attrdirfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+#if !defined(HAVE_SETXATTR)
+#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
+#define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
+#endif
+
+int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags)
+{
+#if defined(HAVE_SETXATTR)
+#ifndef XATTR_ADD_OPT
+ return setxattr(path, name, value, size, flags);
+#else
+ int options = 0;
+ return setxattr(path, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_SETEA)
+ return setea(path, name, value, size, flags);
+#elif defined(HAVE_EXTATTR_SET_FILE)
+ char *s;
+ int retval = 0;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+ if (flags) {
+ /* Check attribute existence */
+ retval = extattr_get_file(path, attrnamespace, attrname, NULL, 0);
+ if (retval < 0) {
+ /* REPLACE attribute, that doesn't exist */
+ if (flags & XATTR_REPLACE && errno == ENOATTR) {
+ errno = ENOATTR;
+ return -1;
+ }
+ /* Ignore other errors */
+ }
+ else {
+ /* CREATE attribute, that already exists */
+ if (flags & XATTR_CREATE) {
+ errno = EEXIST;
+ return -1;
+ }
+ }
+ }
+ retval = extattr_set_file(path, attrnamespace, attrname, value, size);
+ return (retval < 0) ? -1 : 0;
+#elif defined(HAVE_ATTR_SET)
+ int myflags = 0;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
+ if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
+ if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
+
+ return attr_set(path, attrname, (const char *)value, size, myflags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int myflags = O_RDWR;
+ int attrfd;
+ if (flags & XATTR_CREATE) myflags |= O_EXCL;
+ if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
+ attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
+ if (attrfd >= 0) {
+ ret = solaris_write_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags)
+{
+#if defined(HAVE_LSETXATTR)
+ return lsetxattr(path, name, value, size, flags);
+#elif defined(HAVE_SETXATTR) && defined(XATTR_ADD_OPT)
+ int options = XATTR_NOFOLLOW;
+ return setxattr(path, name, value, size, 0, options);
+#elif defined(LSETEA)
+ return lsetea(path, name, value, size, flags);
+#elif defined(HAVE_EXTATTR_SET_LINK)
+ char *s;
+ int retval = 0;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+ if (flags) {
+ /* Check attribute existence */
+ retval = extattr_get_link(path, attrnamespace, attrname, NULL, 0);
+ if (retval < 0) {
+ /* REPLACE attribute, that doesn't exist */
+ if (flags & XATTR_REPLACE && errno == ENOATTR) {
+ errno = ENOATTR;
+ return -1;
+ }
+ /* Ignore other errors */
+ }
+ else {
+ /* CREATE attribute, that already exists */
+ if (flags & XATTR_CREATE) {
+ errno = EEXIST;
+ return -1;
+ }
+ }
+ }
+
+ retval = extattr_set_link(path, attrnamespace, attrname, value, size);
+ return (retval < 0) ? -1 : 0;
+#elif defined(HAVE_ATTR_SET)
+ int myflags = ATTR_DONTFOLLOW;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
+ if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
+ if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
+
+ return attr_set(path, attrname, (const char *)value, size, myflags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int myflags = O_RDWR | AT_SYMLINK_NOFOLLOW;
+ int attrfd;
+ if (flags & XATTR_CREATE) myflags |= O_EXCL;
+ if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
+ attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
+ if (attrfd >= 0) {
+ ret = solaris_write_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags)
+{
+#if defined(HAVE_FSETXATTR)
+#ifndef XATTR_ADD_OPT
+ return fsetxattr(filedes, name, value, size, flags);
+#else
+ int options = 0;
+ return fsetxattr(filedes, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_FSETEA)
+ return fsetea(filedes, name, value, size, flags);
+#elif defined(HAVE_EXTATTR_SET_FD)
+ char *s;
+ int retval = 0;
+ int attrnamespace = (strncmp(name, "system", 6) == 0) ?
+ EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
+ const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
+ if (flags) {
+ /* Check attribute existence */
+ retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
+ if (retval < 0) {
+ /* REPLACE attribute, that doesn't exist */
+ if (flags & XATTR_REPLACE && errno == ENOATTR) {
+ errno = ENOATTR;
+ return -1;
+ }
+ /* Ignore other errors */
+ }
+ else {
+ /* CREATE attribute, that already exists */
+ if (flags & XATTR_CREATE) {
+ errno = EEXIST;
+ return -1;
+ }
+ }
+ }
+ retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
+ return (retval < 0) ? -1 : 0;
+#elif defined(HAVE_ATTR_SETF)
+ int myflags = 0;
+ char *attrname = strchr(name,'.') + 1;
+
+ if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
+ if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
+ if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
+
+ return attr_setf(filedes, attrname, (const char *)value, size, myflags);
+#elif defined(HAVE_ATTROPEN)
+ int ret = -1;
+ int myflags = O_RDWR | O_XATTR;
+ int attrfd;
+ if (flags & XATTR_CREATE) myflags |= O_EXCL;
+ if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
+ attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
+ if (attrfd >= 0) {
+ ret = solaris_write_xattr(attrfd, value, size);
+ close(attrfd);
+ }
+ return ret;
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+/**************************************************************************
+ helper functions for Solaris' EA support
+****************************************************************************/
+#ifdef HAVE_ATTROPEN
+static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size)
+{
+ struct stat sbuf;
+
+ if (fstat(attrfd, &sbuf) == -1) {
+ errno = ENOATTR;
+ return -1;
+ }
+
+ /* This is to return the current size of the named extended attribute */
+ if (size == 0) {
+ return sbuf.st_size;
+ }
+
+ /* check size and read xattr */
+ if (sbuf.st_size > size) {
+ errno = ERANGE;
+ return -1;
+ }
+
+ return read(attrfd, value, sbuf.st_size);
+}
+
+static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size)
+{
+ ssize_t len = 0;
+ int stop = 0;
+ DIR *dirp;
+ struct dirent *de;
+ int newfd = dup(attrdirfd);
+ /* CAUTION: The originating file descriptor should not be
+ used again following the call to fdopendir().
+ For that reason we dup() the file descriptor
+ here to make things more clear. */
+ dirp = fdopendir(newfd);
+
+ while ((de = readdir(dirp))) {
+ size_t listlen = strlen(de->d_name);
+ if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+ /* we don't want "." and ".." here: */
+ LOG(log_maxdebug, logtype_default, "skipped EA %s\n",de->d_name);
+ continue;
+ }
+
+ if (size == 0) {
+ /* return the current size of the list of extended attribute names*/
+ len += listlen + 1;
+ } else {
+ /* check size and copy entry + nul into list. */
+ if ((len + listlen + 1) > size) {
+ errno = ERANGE;
+ len = -1;
+ break;
+ } else {
+ safe_strcpy(list + len, de->d_name, listlen);
+ pstrcpy(list + len, de->d_name);
+ len += listlen;
+ list[len] = '\0';
+ ++len;
+ }
+ }
+ }
+
+ if (closedir(dirp) == -1) {
+ LOG(log_debug, logtype_default, "closedir dirp failed: %s\n",strerror(errno));
+ return -1;
+ }
+ return len;
+}
+
+static int solaris_unlinkat(int attrdirfd, const char *name)
+{
+ if (unlinkat(attrdirfd, name, 0) == -1) {
+ if (errno == ENOENT) {
+ errno = ENOATTR;
+ }
+ return -1;
+ }
+ return 0;
+}
+
+static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode)
+{
+ int filedes = attropen(path, attrpath, oflag, mode);
+ if (filedes == -1) {
+ LOG(log_maxdebug, logtype_default, "attropen FAILED: path: %s, name: %s, errno: %s\n",path,attrpath,strerror(errno));
+ if (errno == EINVAL) {
+ errno = ENOTSUP;
+ } else {
+ errno = ENOATTR;
+ }
+ }
+ return filedes;
+}
+
+static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode)
+{
+ int filedes = openat(fildes, path, oflag, mode);
+ if (filedes == -1) {
+ LOG(log_maxdebug, logtype_default, "openat FAILED: fd: %s, path: %s, errno: %s\n",filedes,path,strerror(errno));
+ if (errno == EINVAL) {
+ errno = ENOTSUP;
+ } else {
+ errno = ENOATTR;
+ }
+ }
+ return filedes;
+}
+
+static int solaris_write_xattr(int attrfd, const char *value, size_t size)
+{
+ if ((ftruncate(attrfd, 0) == 0) && (write(attrfd, value, size) == size)) {
+ return 0;
+ } else {
+ LOG(log_maxdebug, logtype_default, "solaris_write_xattr FAILED!\n");
+ return -1;
+ }
+}
+#endif /*HAVE_ATTROPEN*/
+
projects / netatalk.git / commitdiff