*
* Copyright (C) 1996 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2006 Wayne Davison
+ * Copyright (C) 2006-2009 Wayne Davison
*
* 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
extern int orig_umask;
extern int numeric_ids;
extern int inc_recurse;
+extern int preserve_devices;
+extern int preserve_specials;
/* Flags used to indicate what items are being transmitted for an entry. */
#define XMIT_USER_OBJ (1<<0)
static item_list access_acl_list = EMPTY_ITEM_LIST;
static item_list default_acl_list = EMPTY_ITEM_LIST;
+static size_t prior_access_count = (size_t)-1;
+static size_t prior_default_count = (size_t)-1;
+
/* === Calculations on ACL types === */
static const char *str_acl_type(SMB_ACL_TYPE_T type)
{
- return type == SMB_ACL_TYPE_ACCESS ? "SMB_ACL_TYPE_ACCESS"
- : type == SMB_ACL_TYPE_DEFAULT ? "SMB_ACL_TYPE_DEFAULT"
- : "unknown SMB_ACL_TYPE_T";
+ switch (type) {
+ case SMB_ACL_TYPE_ACCESS:
+#ifdef HAVE_OSX_ACLS
+ return "ACL_TYPE_EXTENDED";
+#else
+ return "ACL_TYPE_ACCESS";
+#endif
+ case SMB_ACL_TYPE_DEFAULT:
+ return "ACL_TYPE_DEFAULT";
+ default:
+ break;
+ }
+ return "unknown ACL type!";
}
static int calc_sacl_entries(const rsync_acl *racl)
/* A System ACL always gets user/group/other permission entries. */
return racl->names.count
#ifdef ACLS_NEED_MASK
- + 4;
+ + 1
#else
- + (racl->mask_obj != NO_ENTRY) + 3;
+ + (racl->mask_obj != NO_ENTRY)
#endif
+ + 3;
}
/* Extracts and returns the permission bits from the ACL. This cannot be
/* Removes the permission-bit entries from the ACL because these
* can be reconstructed from the file's mode. */
-static void rsync_acl_strip_perms(rsync_acl *racl)
+static void rsync_acl_strip_perms(stat_x *sxp)
{
+ rsync_acl *racl = sxp->acc_acl;
+
racl->user_obj = NO_ENTRY;
if (racl->mask_obj == NO_ENTRY)
racl->group_obj = NO_ENTRY;
else {
- if (racl->group_obj == racl->mask_obj)
+ int group_perms = (sxp->st.st_mode >> 3) & 7;
+ if (racl->group_obj == group_perms)
racl->group_obj = NO_ENTRY;
- racl->mask_obj = NO_ENTRY;
+#ifndef HAVE_SOLARIS_ACLS
+ if (racl->names.count != 0 && racl->mask_obj == group_perms)
+ racl->mask_obj = NO_ENTRY;
+#endif
}
racl->other_obj = NO_ENTRY;
}
/* Truncate the temporary list now that its idas have been saved. */
temp_ida_list.count = 0;
-#ifdef ACLS_NEED_MASK
- if (!racl->names.count && racl->mask_obj != NO_ENTRY) {
- /* Throw away a superfluous mask, but mask off the
- * group perms with it first. */
- racl->group_obj &= racl->mask_obj;
- racl->mask_obj = NO_ENTRY;
- }
-#endif
-
return True;
}
int get_acl(const char *fname, stat_x *sxp)
{
sxp->acc_acl = create_racl();
+
+ if (S_ISREG(sxp->st.st_mode) || S_ISDIR(sxp->st.st_mode)) {
+ /* Everyone supports this. */
+ } else if (S_ISLNK(sxp->st.st_mode)) {
+ return 0;
+ } else if (IS_SPECIAL(sxp->st.st_mode)) {
+#ifndef NO_SPECIAL_ACLS
+ if (!preserve_specials)
+#endif
+ return 0;
+ } else if (IS_DEVICE(sxp->st.st_mode)) {
+#ifndef NO_DEVICE_ACLS
+ if (!preserve_devices)
+#endif
+ return 0;
+ }
+
if (get_rsync_acl(fname, sxp->acc_acl, SMB_ACL_TYPE_ACCESS,
sxp->st.st_mode) < 0) {
free_acl(sxp);
/* === Send functions === */
/* Send the ida list over the file descriptor. */
-static void send_ida_entries(const ida_entries *idal, int f)
+static void send_ida_entries(int f, const ida_entries *idal)
{
id_access *ida;
size_t count = idal->count;
}
}
-static void send_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type,
- item_list *racl_list, int f)
+static void send_rsync_acl(int f, rsync_acl *racl, SMB_ACL_TYPE_T type,
+ item_list *racl_list)
{
int ndx = find_matching_rsync_acl(racl, type, racl_list);
if (flags & XMIT_OTHER_OBJ)
write_varint(f, racl->other_obj);
if (flags & XMIT_NAME_LIST)
- send_ida_entries(&racl->names, f);
+ send_ida_entries(f, &racl->names);
/* Give the allocated data to the new list object. */
*new_racl = *racl;
/* Send the ACL from the stat_x structure down the indicated file descriptor.
* This also frees the ACL data. */
-void send_acl(stat_x *sxp, int f)
+void send_acl(int f, stat_x *sxp)
{
if (!sxp->acc_acl) {
sxp->acc_acl = create_racl();
rsync_acl_fake_perms(sxp->acc_acl, sxp->st.st_mode);
}
/* Avoid sending values that can be inferred from other data. */
- rsync_acl_strip_perms(sxp->acc_acl);
+ rsync_acl_strip_perms(sxp);
- send_rsync_acl(sxp->acc_acl, SMB_ACL_TYPE_ACCESS, &access_acl_list, f);
+ send_rsync_acl(f, sxp->acc_acl, SMB_ACL_TYPE_ACCESS, &access_acl_list);
if (S_ISDIR(sxp->st.st_mode)) {
if (!sxp->def_acl)
sxp->def_acl = create_racl();
- send_rsync_acl(sxp->def_acl, SMB_ACL_TYPE_DEFAULT, &default_acl_list, f);
+ send_rsync_acl(f, sxp->def_acl, SMB_ACL_TYPE_DEFAULT, &default_acl_list);
}
}
/* === Receive functions === */
-static uint32 recv_acl_access(uchar *name_follows_ptr, int f)
+static uint32 recv_acl_access(int f, uchar *name_follows_ptr)
{
uint32 access = read_varint(f);
return access;
}
-static uchar recv_ida_entries(ida_entries *ent, int f)
+static uchar recv_ida_entries(int f, ida_entries *ent)
{
uchar computed_mask_bits = 0;
int i, count = read_varint(f);
for (i = 0; i < count; i++) {
uchar has_name;
id_t id = read_varint(f);
- uint32 access = recv_acl_access(&has_name, f);
+ uint32 access = recv_acl_access(f, &has_name);
if (has_name) {
if (access & NAME_IS_USER)
return computed_mask_bits & ~NO_ENTRY;
}
-static int recv_rsync_acl(item_list *racl_list, SMB_ACL_TYPE_T type, int f)
+static int recv_rsync_acl(int f, item_list *racl_list, SMB_ACL_TYPE_T type, mode_t mode)
{
uchar computed_mask_bits = 0;
acl_duo *duo_item;
if (ndx != 0)
return ndx - 1;
-
+
ndx = racl_list->count;
duo_item = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000);
duo_item->racl = empty_rsync_acl;
flags = read_byte(f);
if (flags & XMIT_USER_OBJ)
- duo_item->racl.user_obj = recv_acl_access(NULL, f);
+ duo_item->racl.user_obj = recv_acl_access(f, NULL);
if (flags & XMIT_GROUP_OBJ)
- duo_item->racl.group_obj = recv_acl_access(NULL, f);
+ duo_item->racl.group_obj = recv_acl_access(f, NULL);
if (flags & XMIT_MASK_OBJ)
- duo_item->racl.mask_obj = recv_acl_access(NULL, f);
+ duo_item->racl.mask_obj = recv_acl_access(f, NULL);
if (flags & XMIT_OTHER_OBJ)
- duo_item->racl.other_obj = recv_acl_access(NULL, f);
+ duo_item->racl.other_obj = recv_acl_access(f, NULL);
if (flags & XMIT_NAME_LIST)
- computed_mask_bits |= recv_ida_entries(&duo_item->racl.names, f);
+ computed_mask_bits |= recv_ida_entries(f, &duo_item->racl.names);
#ifdef HAVE_OSX_ACLS
/* If we received a superfluous mask, throw it away. */
duo_item->racl.mask_obj = NO_ENTRY;
#else
- if (!duo_item->racl.names.count) {
- /* If we received a superfluous mask, throw it away. */
- if (duo_item->racl.mask_obj != NO_ENTRY) {
- /* Mask off the group perms with it first. */
- duo_item->racl.group_obj &= duo_item->racl.mask_obj | NO_ENTRY;
- duo_item->racl.mask_obj = NO_ENTRY;
- }
- } else if (duo_item->racl.mask_obj == NO_ENTRY) /* Must be non-empty with lists. */
- duo_item->racl.mask_obj = (computed_mask_bits | duo_item->racl.group_obj) & ~NO_ENTRY;
+ if (duo_item->racl.names.count && duo_item->racl.mask_obj == NO_ENTRY) {
+ /* Mask must be non-empty with lists. */
+ if (type == SMB_ACL_TYPE_ACCESS)
+ computed_mask_bits = (mode >> 3) & 7;
+ else
+ computed_mask_bits |= duo_item->racl.group_obj & ~NO_ENTRY;
+ duo_item->racl.mask_obj = computed_mask_bits;
+ }
#endif
duo_item->sacl = NULL;
}
/* Receive the ACL info the sender has included for this file-list entry. */
-void receive_acl(struct file_struct *file, int f)
+void receive_acl(int f, struct file_struct *file)
{
- F_ACL(file) = recv_rsync_acl(&access_acl_list, SMB_ACL_TYPE_ACCESS, f);
+ F_ACL(file) = recv_rsync_acl(f, &access_acl_list, SMB_ACL_TYPE_ACCESS, file->mode);
if (S_ISDIR(file->mode))
- F_DIR_DEFACL(file) = recv_rsync_acl(&default_acl_list, SMB_ACL_TYPE_DEFAULT, f);
+ F_DIR_DEFACL(file) = recv_rsync_acl(f, &default_acl_list, SMB_ACL_TYPE_DEFAULT, 0);
}
static int cache_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type, item_list *racl_list)
/* Turn the ACL data in stat_x into cached ACL data, setting the index
* values in the file struct. */
-void cache_acl(struct file_struct *file, stat_x *sxp)
+void cache_tmp_acl(struct file_struct *file, stat_x *sxp)
{
+ if (prior_access_count == (size_t)-1)
+ prior_access_count = access_acl_list.count;
+
F_ACL(file) = cache_rsync_acl(sxp->acc_acl,
SMB_ACL_TYPE_ACCESS, &access_acl_list);
if (S_ISDIR(sxp->st.st_mode)) {
+ if (prior_default_count == (size_t)-1)
+ prior_default_count = default_acl_list.count;
F_DIR_DEFACL(file) = cache_rsync_acl(sxp->def_acl,
SMB_ACL_TYPE_DEFAULT, &default_acl_list);
}
}
+static void uncache_duo_acls(item_list *duo_list, size_t start)
+{
+ acl_duo *duo_item = duo_list->items;
+ acl_duo *duo_start = duo_item + start;
+
+ duo_item += duo_list->count;
+ duo_list->count = start;
+
+ while (duo_item-- > duo_start) {
+ rsync_acl_free(&duo_item->racl);
+ if (duo_item->sacl)
+ sys_acl_free_acl(duo_item->sacl);
+ }
+}
+
+void uncache_tmp_acls(void)
+{
+ if (prior_access_count != (size_t)-1) {
+ uncache_duo_acls(&access_acl_list, prior_access_count);
+ prior_access_count = (size_t)-1;
+ }
+
+ if (prior_default_count != (size_t)-1) {
+ uncache_duo_acls(&default_acl_list, prior_default_count);
+ prior_default_count = (size_t)-1;
+ }
+}
+
#ifndef HAVE_OSX_ACLS
static mode_t change_sacl_perms(SMB_ACL_T sacl, rsync_acl *racl, mode_t old_mode, mode_t mode)
{
COE2( store_access_in_entry,((mode >> 3) & 7, entry) );
break;
case SMB_ACL_MASK:
+#ifndef HAVE_SOLARIS_ACLS
#ifndef ACLS_NEED_MASK
/* mask is only empty when we don't need it. */
if (racl->mask_obj == NO_ENTRY)
break;
#endif
COE2( store_access_in_entry,((mode >> 3) & 7, entry) );
+#endif
break;
case SMB_ACL_OTHER:
COE2( store_access_in_entry,(mode & 7, entry) );
rsyserr(FERROR_XFER, errno, "change_sacl_perms: %s()",
errfun);
}
- return (mode_t)~0;
+ return (mode_t)-1;
}
#ifdef SMB_ACL_LOSES_SPECIAL_MODE_BITS
if (type == SMB_ACL_TYPE_ACCESS) {
cur_mode = change_sacl_perms(duo_item->sacl, &duo_item->racl,
cur_mode, mode);
- if (cur_mode == (mode_t)~0)
+ if (cur_mode == (mode_t)-1)
return 0;
}
#endif
if (sys_acl_set_file(fname, type, duo_item->sacl) < 0) {
rsyserr(FERROR_XFER, errno, "set_acl: sys_acl_set_file(%s, %s)",
- fname, str_acl_type(type));
+ fname, str_acl_type(type));
return -1;
}
if (type == SMB_ACL_TYPE_ACCESS)
return 0;
}
-/* Set ACL on indicated filename.
+/* Given a fname, this sets extended access ACL entries, the default ACL (for a
+ * dir), and the regular mode bits on the file. Call this with fname set to
+ * NULL to just check if the ACL is different.
*
- * This sets extended access ACL entries and default ACL. If convenient,
- * it sets permission bits along with the access ACL and signals having
- * done so by modifying sxp->st.st_mode.
+ * If the ACL operation has a side-effect of changing the file's mode, the
+ * sxp->st.st_mode value will be changed to match.
*
- * Returns 1 for unchanged, 0 for changed, -1 for failed. Call this
- * with fname set to NULL to just check if the ACL is unchanged. */
-int set_acl(const char *fname, const struct file_struct *file, stat_x *sxp)
+ * Returns 0 for an unchanged ACL, 1 for changed, -1 for failed. */
+int set_acl(const char *fname, const struct file_struct *file, stat_x *sxp, mode_t new_mode)
{
- int unchanged = 1;
+ int changed = 0;
int32 ndx;
BOOL eq;
acl_duo *duo_item = access_acl_list.items;
duo_item += ndx;
eq = sxp->acc_acl
- && rsync_acl_equal_enough(sxp->acc_acl, &duo_item->racl, file->mode);
+ && rsync_acl_equal_enough(sxp->acc_acl, &duo_item->racl, new_mode);
if (!eq) {
- unchanged = 0;
+ changed = 1;
if (!dry_run && fname
&& set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_ACCESS,
- sxp, file->mode) < 0)
- unchanged = -1;
+ sxp, new_mode) < 0)
+ return -1;
}
}
- if (!S_ISDIR(sxp->st.st_mode))
- return unchanged;
+ if (!S_ISDIR(new_mode))
+ return changed;
ndx = F_DIR_DEFACL(file);
if (ndx >= 0 && (size_t)ndx < default_acl_list.count) {
duo_item += ndx;
eq = sxp->def_acl && rsync_acl_equal(sxp->def_acl, &duo_item->racl);
if (!eq) {
- if (unchanged > 0)
- unchanged = 0;
+ changed = 1;
if (!dry_run && fname
&& set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_DEFAULT,
- sxp, file->mode) < 0)
- unchanged = -1;
+ sxp, new_mode) < 0)
+ return -1;
}
}
- return unchanged;
+ return changed;
}
/* Non-incremental recursion needs to convert all the received IDs.
/* Apply the permission-bit entries of the default ACL, if any. */
if (racl.user_obj != NO_ENTRY) {
perms = rsync_acl_get_perms(&racl);
- if (verbose > 2)
+ if (DEBUG_GTE(ACL, 1))
rprintf(FINFO, "got ACL-based default perms %o for directory %s\n", perms, dir);
}
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