/*
Unix SMB/CIFS implementation.
SMB NT Security Descriptor / Unix permission conversion.
- Copyright (C) Jeremy Allison 1994-2000.
+ Copyright (C) Jeremy Allison 1994-2009.
Copyright (C) Andreas Gruenbacher 2002.
+ Copyright (C) Simo Sorce <idra@samba.org> 2009.
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
enum ace_owner owner_type;
enum ace_attribute attr;
posix_id unix_ug;
- bool inherited;
+ uint8_t ace_flags; /* From windows ACE entry. */
} canon_ace;
#define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
/*
* EA format of user.SAMBA_PAI (Samba_Posix_Acl_Interitance)
- * attribute on disk.
+ * attribute on disk - version 1.
+ * All values are little endian.
*
- * | 1 | 1 | 2 | 2 | ....
+ * | 1 | 1 | 2 | 2 | ....
* +------+------+-------------+---------------------+-------------+--------------------+
* | vers | flag | num_entries | num_default_entries | ..entries.. | default_entries... |
* +------+------+-------------+---------------------+-------------+--------------------+
+ *
+ * Entry format is :
+ *
+ * | 1 | 4 |
+ * +------+-------------------+
+ * | value| uid/gid or world |
+ * | type | value |
+ * +------+-------------------+
+ *
+ * Version 2 format. Stores extra Windows metadata about an ACL.
+ *
+ * | 1 | 2 | 2 | 2 | ....
+ * +------+----------+-------------+---------------------+-------------+--------------------+
+ * | vers | ace | num_entries | num_default_entries | ..entries.. | default_entries... |
+ * | 2 | type | | | | |
+ * +------+----------+-------------+---------------------+-------------+--------------------+
+ *
+ * Entry format is :
+ *
+ * | 1 | 1 | 4 |
+ * +------+------+-------------------+
+ * | ace | value| uid/gid or world |
+ * | flag | type | value |
+ * +------+-------------------+------+
+ *
*/
-#define PAI_VERSION_OFFSET 0
-#define PAI_FLAG_OFFSET 1
-#define PAI_NUM_ENTRIES_OFFSET 2
-#define PAI_NUM_DEFAULT_ENTRIES_OFFSET 4
-#define PAI_ENTRIES_BASE 6
+#define PAI_VERSION_OFFSET 0
+
+#define PAI_V1_FLAG_OFFSET 1
+#define PAI_V1_NUM_ENTRIES_OFFSET 2
+#define PAI_V1_NUM_DEFAULT_ENTRIES_OFFSET 4
+#define PAI_V1_ENTRIES_BASE 6
+#define PAI_V1_ACL_FLAG_PROTECTED 0x1
+#define PAI_V1_ENTRY_LENGTH 5
+
+#define PAI_V1_VERSION 1
-#define PAI_VERSION 1
-#define PAI_ACL_FLAG_PROTECTED 0x1
-#define PAI_ENTRY_LENGTH 5
+#define PAI_V2_TYPE_OFFSET 1
+#define PAI_V2_NUM_ENTRIES_OFFSET 3
+#define PAI_V2_NUM_DEFAULT_ENTRIES_OFFSET 5
+#define PAI_V2_ENTRIES_BASE 7
+#define PAI_V2_ENTRY_LENGTH 6
+
+#define PAI_V2_VERSION 2
/*
* In memory format of user.SAMBA_PAI attribute.
struct pai_entry {
struct pai_entry *next, *prev;
+ uint8_t ace_flags;
enum ace_owner owner_type;
posix_id unix_ug;
};
struct pai_val {
- bool pai_protected;
+ uint16_t sd_type;
unsigned int num_entries;
struct pai_entry *entry_list;
unsigned int num_def_entries;
Return a uint32 of the pai_entry principal.
************************************************************************/
-static uint32 get_pai_entry_val(struct pai_entry *paie)
+static uint32_t get_pai_entry_val(struct pai_entry *paie)
{
switch (paie->owner_type) {
case UID_ACE:
DEBUG(10,("get_pai_entry_val: uid = %u\n", (unsigned int)paie->unix_ug.uid ));
- return (uint32)paie->unix_ug.uid;
+ return (uint32_t)paie->unix_ug.uid;
case GID_ACE:
DEBUG(10,("get_pai_entry_val: gid = %u\n", (unsigned int)paie->unix_ug.gid ));
- return (uint32)paie->unix_ug.gid;
+ return (uint32_t)paie->unix_ug.gid;
case WORLD_ACE:
default:
DEBUG(10,("get_pai_entry_val: world ace\n"));
- return (uint32)-1;
+ return (uint32_t)-1;
}
}
Return a uint32 of the entry principal.
************************************************************************/
-static uint32 get_entry_val(canon_ace *ace_entry)
+static uint32_t get_entry_val(canon_ace *ace_entry)
{
switch (ace_entry->owner_type) {
case UID_ACE:
DEBUG(10,("get_entry_val: uid = %u\n", (unsigned int)ace_entry->unix_ug.uid ));
- return (uint32)ace_entry->unix_ug.uid;
+ return (uint32_t)ace_entry->unix_ug.uid;
case GID_ACE:
DEBUG(10,("get_entry_val: gid = %u\n", (unsigned int)ace_entry->unix_ug.gid ));
- return (uint32)ace_entry->unix_ug.gid;
+ return (uint32_t)ace_entry->unix_ug.gid;
case WORLD_ACE:
default:
DEBUG(10,("get_entry_val: world ace\n"));
- return (uint32)-1;
+ return (uint32_t)-1;
}
}
/************************************************************************
- Count the inherited entries.
-************************************************************************/
-
-static unsigned int num_inherited_entries(canon_ace *ace_list)
-{
- unsigned int num_entries = 0;
-
- for (; ace_list; ace_list = ace_list->next)
- if (ace_list->inherited)
- num_entries++;
- return num_entries;
-}
-
-/************************************************************************
- Create the on-disk format. Caller must free.
+ Create the on-disk format (always v2 now). Caller must free.
************************************************************************/
-static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, bool pai_protected, size_t *store_size)
+static char *create_pai_buf_v2(canon_ace *file_ace_list,
+ canon_ace *dir_ace_list,
+ uint16_t sd_type,
+ size_t *store_size)
{
char *pai_buf = NULL;
canon_ace *ace_list = NULL;
unsigned int num_entries = 0;
unsigned int num_def_entries = 0;
- for (ace_list = file_ace_list; ace_list; ace_list = ace_list->next)
- if (ace_list->inherited)
- num_entries++;
+ for (ace_list = file_ace_list; ace_list; ace_list = ace_list->next) {
+ num_entries++;
+ }
- for (ace_list = dir_ace_list; ace_list; ace_list = ace_list->next)
- if (ace_list->inherited)
- num_def_entries++;
+ for (ace_list = dir_ace_list; ace_list; ace_list = ace_list->next) {
+ num_def_entries++;
+ }
- DEBUG(10,("create_pai_buf: num_entries = %u, num_def_entries = %u\n", num_entries, num_def_entries ));
+ DEBUG(10,("create_pai_buf_v2: num_entries = %u, num_def_entries = %u\n", num_entries, num_def_entries ));
- *store_size = PAI_ENTRIES_BASE + ((num_entries + num_def_entries)*PAI_ENTRY_LENGTH);
+ *store_size = PAI_V2_ENTRIES_BASE +
+ ((num_entries + num_def_entries)*PAI_V2_ENTRY_LENGTH);
pai_buf = (char *)SMB_MALLOC(*store_size);
if (!pai_buf) {
}
/* Set up the header. */
- memset(pai_buf, '\0', PAI_ENTRIES_BASE);
- SCVAL(pai_buf,PAI_VERSION_OFFSET,PAI_VERSION);
- SCVAL(pai_buf,PAI_FLAG_OFFSET,(pai_protected ? PAI_ACL_FLAG_PROTECTED : 0));
- SSVAL(pai_buf,PAI_NUM_ENTRIES_OFFSET,num_entries);
- SSVAL(pai_buf,PAI_NUM_DEFAULT_ENTRIES_OFFSET,num_def_entries);
+ memset(pai_buf, '\0', PAI_V2_ENTRIES_BASE);
+ SCVAL(pai_buf,PAI_VERSION_OFFSET,PAI_V2_VERSION);
+ SSVAL(pai_buf,PAI_V2_TYPE_OFFSET, sd_type);
+ SSVAL(pai_buf,PAI_V2_NUM_ENTRIES_OFFSET,num_entries);
+ SSVAL(pai_buf,PAI_V2_NUM_DEFAULT_ENTRIES_OFFSET,num_def_entries);
- entry_offset = pai_buf + PAI_ENTRIES_BASE;
+ entry_offset = pai_buf + PAI_V2_ENTRIES_BASE;
for (ace_list = file_ace_list; ace_list; ace_list = ace_list->next) {
- if (ace_list->inherited) {
- uint8 type_val = (unsigned char)ace_list->owner_type;
- uint32 entry_val = get_entry_val(ace_list);
+ uint8_t type_val = (uint8_t)ace_list->owner_type;
+ uint32_t entry_val = get_entry_val(ace_list);
- SCVAL(entry_offset,0,type_val);
- SIVAL(entry_offset,1,entry_val);
- entry_offset += PAI_ENTRY_LENGTH;
- }
+ SCVAL(entry_offset,0,ace_list->ace_flags);
+ SCVAL(entry_offset,1,type_val);
+ SIVAL(entry_offset,2,entry_val);
+ entry_offset += PAI_V2_ENTRY_LENGTH;
}
for (ace_list = dir_ace_list; ace_list; ace_list = ace_list->next) {
- if (ace_list->inherited) {
- uint8 type_val = (unsigned char)ace_list->owner_type;
- uint32 entry_val = get_entry_val(ace_list);
+ uint8_t type_val = (uint8_t)ace_list->owner_type;
+ uint32_t entry_val = get_entry_val(ace_list);
- SCVAL(entry_offset,0,type_val);
- SIVAL(entry_offset,1,entry_val);
- entry_offset += PAI_ENTRY_LENGTH;
- }
+ SCVAL(entry_offset,0,ace_list->ace_flags);
+ SCVAL(entry_offset,1,type_val);
+ SIVAL(entry_offset,2,entry_val);
+ entry_offset += PAI_V2_ENTRY_LENGTH;
}
return pai_buf;
Store the user.SAMBA_PAI attribute on disk.
************************************************************************/
-static void store_inheritance_attributes(files_struct *fsp, canon_ace *file_ace_list,
- canon_ace *dir_ace_list, bool pai_protected)
+static void store_inheritance_attributes(files_struct *fsp,
+ canon_ace *file_ace_list,
+ canon_ace *dir_ace_list,
+ uint16_t sd_type)
{
int ret;
size_t store_size;
char *pai_buf;
- if (!lp_map_acl_inherit(SNUM(fsp->conn)))
- return;
-
- /*
- * Don't store if this ACL isn't protected and
- * none of the entries in it are marked as inherited.
- */
-
- if (!pai_protected && num_inherited_entries(file_ace_list) == 0 && num_inherited_entries(dir_ace_list) == 0) {
- /* Instead just remove the attribute if it exists. */
- if (fsp->fh->fd != -1)
- SMB_VFS_FREMOVEXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME);
- else
- SMB_VFS_REMOVEXATTR(fsp->conn, fsp->fsp_name, SAMBA_POSIX_INHERITANCE_EA_NAME);
+ if (!lp_map_acl_inherit(SNUM(fsp->conn))) {
return;
}
- pai_buf = create_pai_buf(file_ace_list, dir_ace_list, pai_protected, &store_size);
+ pai_buf = create_pai_buf_v2(file_ace_list, dir_ace_list,
+ sd_type, &store_size);
- if (fsp->fh->fd != -1)
+ if (fsp->fh->fd != -1) {
ret = SMB_VFS_FSETXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME,
pai_buf, store_size, 0);
- else
+ } else {
ret = SMB_VFS_SETXATTR(fsp->conn,fsp->fsp_name, SAMBA_POSIX_INHERITANCE_EA_NAME,
pai_buf, store_size, 0);
+ }
SAFE_FREE(pai_buf);
- DEBUG(10,("store_inheritance_attribute:%s for file %s\n", pai_protected ? " (protected)" : "", fsp->fsp_name));
- if (ret == -1 && !no_acl_syscall_error(errno))
+ DEBUG(10,("store_inheritance_attribute: type 0x%x for file %s\n",
+ (unsigned int)sd_type,
+ fsp->fsp_name));
+
+ if (ret == -1 && !no_acl_syscall_error(errno)) {
DEBUG(1,("store_inheritance_attribute: Error %s\n", strerror(errno) ));
+ }
}
/************************************************************************
}
/************************************************************************
- Was this ACL protected ?
+ Get any stored ACE flags.
************************************************************************/
-static bool get_protected_flag(struct pai_val *pal)
-{
- if (!pal)
- return False;
- return pal->pai_protected;
-}
-
-/************************************************************************
- Was this ACE inherited ?
-************************************************************************/
-
-static bool get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, bool default_ace)
+static uint16_t get_pai_flags(struct pai_val *pal, canon_ace *ace_entry, bool default_ace)
{
struct pai_entry *paie;
- if (!pal)
- return False;
+ if (!pal) {
+ return 0;
+ }
/* If the entry exists it is inherited. */
for (paie = (default_ace ? pal->def_entry_list : pal->entry_list); paie; paie = paie->next) {
if (ace_entry->owner_type == paie->owner_type &&
get_entry_val(ace_entry) == get_pai_entry_val(paie))
- return True;
+ return paie->ace_flags;
}
- return False;
+ return 0;
}
/************************************************************************
- Ensure an attribute just read is valid.
+ Ensure an attribute just read is valid - v1.
************************************************************************/
-static bool check_pai_ok(char *pai_buf, size_t pai_buf_data_size)
+static bool check_pai_ok_v1(const char *pai_buf, size_t pai_buf_data_size)
{
uint16 num_entries;
uint16 num_def_entries;
- if (pai_buf_data_size < PAI_ENTRIES_BASE) {
+ if (pai_buf_data_size < PAI_V1_ENTRIES_BASE) {
/* Corrupted - too small. */
- return False;
+ return false;
}
- if (CVAL(pai_buf,PAI_VERSION_OFFSET) != PAI_VERSION)
- return False;
+ if (CVAL(pai_buf,PAI_VERSION_OFFSET) != PAI_V1_VERSION) {
+ return false;
+ }
- num_entries = SVAL(pai_buf,PAI_NUM_ENTRIES_OFFSET);
- num_def_entries = SVAL(pai_buf,PAI_NUM_DEFAULT_ENTRIES_OFFSET);
+ num_entries = SVAL(pai_buf,PAI_V1_NUM_ENTRIES_OFFSET);
+ num_def_entries = SVAL(pai_buf,PAI_V1_NUM_DEFAULT_ENTRIES_OFFSET);
/* Check the entry lists match. */
/* Each entry is 5 bytes (type plus 4 bytes of uid or gid). */
- if (((num_entries + num_def_entries)*PAI_ENTRY_LENGTH) + PAI_ENTRIES_BASE != pai_buf_data_size)
- return False;
+ if (((num_entries + num_def_entries)*PAI_V1_ENTRY_LENGTH) +
+ PAI_V1_ENTRIES_BASE != pai_buf_data_size) {
+ return false;
+ }
- return True;
+ return true;
}
+/************************************************************************
+ Ensure an attribute just read is valid - v2.
+************************************************************************/
+
+static bool check_pai_ok_v2(const char *pai_buf, size_t pai_buf_data_size)
+{
+ uint16 num_entries;
+ uint16 num_def_entries;
+
+ if (pai_buf_data_size < PAI_V2_ENTRIES_BASE) {
+ /* Corrupted - too small. */
+ return false;
+ }
+
+ if (CVAL(pai_buf,PAI_VERSION_OFFSET) != PAI_V2_VERSION) {
+ return false;
+ }
+
+ num_entries = SVAL(pai_buf,PAI_V2_NUM_ENTRIES_OFFSET);
+ num_def_entries = SVAL(pai_buf,PAI_V2_NUM_DEFAULT_ENTRIES_OFFSET);
+
+ /* Check the entry lists match. */
+ /* Each entry is 6 bytes (flags + type + 4 bytes of uid or gid). */
+
+ if (((num_entries + num_def_entries)*PAI_V2_ENTRY_LENGTH) +
+ PAI_V2_ENTRIES_BASE != pai_buf_data_size) {
+ return false;
+ }
+
+ return true;
+}
/************************************************************************
- Convert to in-memory format.
+ Decode the owner.
************************************************************************/
-static struct pai_val *create_pai_val(char *buf, size_t size)
+static bool get_pai_owner_type(struct pai_entry *paie, const char *entry_offset)
+{
+ paie->owner_type = (enum ace_owner)CVAL(entry_offset,0);
+ switch( paie->owner_type) {
+ case UID_ACE:
+ paie->unix_ug.uid = (uid_t)IVAL(entry_offset,1);
+ DEBUG(10,("get_pai_owner_type: uid = %u\n",
+ (unsigned int)paie->unix_ug.uid ));
+ break;
+ case GID_ACE:
+ paie->unix_ug.gid = (gid_t)IVAL(entry_offset,1);
+ DEBUG(10,("get_pai_owner_type: gid = %u\n",
+ (unsigned int)paie->unix_ug.gid ));
+ break;
+ case WORLD_ACE:
+ paie->unix_ug.world = -1;
+ DEBUG(10,("get_pai_owner_type: world ace\n"));
+ break;
+ default:
+ return false;
+ }
+ return true;
+}
+
+/************************************************************************
+ Process v2 entries.
+************************************************************************/
+
+static const char *create_pai_v1_entries(struct pai_val *paiv,
+ const char *entry_offset,
+ bool def_entry)
{
- char *entry_offset;
- struct pai_val *paiv = NULL;
int i;
- if (!check_pai_ok(buf, size))
+ for (i = 0; i < paiv->num_entries; i++) {
+ struct pai_entry *paie = SMB_MALLOC_P(struct pai_entry);
+ if (!paie) {
+ return NULL;
+ }
+
+ paie->ace_flags = SEC_ACE_FLAG_INHERITED_ACE;
+ if (!get_pai_owner_type(paie, entry_offset)) {
+ return NULL;
+ }
+
+ if (!def_entry) {
+ DLIST_ADD(paiv->entry_list, paie);
+ } else {
+ DLIST_ADD(paiv->def_entry_list, paie);
+ }
+ entry_offset += PAI_V1_ENTRY_LENGTH;
+ }
+ return entry_offset;
+}
+
+/************************************************************************
+ Convert to in-memory format from version 1.
+************************************************************************/
+
+static struct pai_val *create_pai_val_v1(const char *buf, size_t size)
+{
+ const char *entry_offset;
+ struct pai_val *paiv = NULL;
+
+ if (!check_pai_ok_v1(buf, size)) {
return NULL;
+ }
paiv = SMB_MALLOC_P(struct pai_val);
- if (!paiv)
+ if (!paiv) {
return NULL;
+ }
memset(paiv, '\0', sizeof(struct pai_val));
- paiv->pai_protected = (CVAL(buf,PAI_FLAG_OFFSET) == PAI_ACL_FLAG_PROTECTED);
+ paiv->sd_type = (CVAL(buf,PAI_V1_FLAG_OFFSET) == PAI_V1_ACL_FLAG_PROTECTED) ?
+ SE_DESC_DACL_PROTECTED : 0;
- paiv->num_entries = SVAL(buf,PAI_NUM_ENTRIES_OFFSET);
- paiv->num_def_entries = SVAL(buf,PAI_NUM_DEFAULT_ENTRIES_OFFSET);
+ paiv->num_entries = SVAL(buf,PAI_V1_NUM_ENTRIES_OFFSET);
+ paiv->num_def_entries = SVAL(buf,PAI_V1_NUM_DEFAULT_ENTRIES_OFFSET);
- entry_offset = buf + PAI_ENTRIES_BASE;
+ entry_offset = buf + PAI_V1_ENTRIES_BASE;
- DEBUG(10,("create_pai_val:%s num_entries = %u, num_def_entries = %u\n",
- paiv->pai_protected ? " (pai_protected)" : "", paiv->num_entries, paiv->num_def_entries ));
+ DEBUG(10,("create_pai_val: num_entries = %u, num_def_entries = %u\n",
+ paiv->num_entries, paiv->num_def_entries ));
- for (i = 0; i < paiv->num_entries; i++) {
- struct pai_entry *paie;
+ entry_offset = create_pai_v1_entries(paiv, entry_offset, false);
+ if (entry_offset == NULL) {
+ free_inherited_info(paiv);
+ return NULL;
+ }
+ entry_offset = create_pai_v1_entries(paiv, entry_offset, true);
+ if (entry_offset == NULL) {
+ free_inherited_info(paiv);
+ return NULL;
+ }
+
+ return paiv;
+}
+
+/************************************************************************
+ Process v2 entries.
+************************************************************************/
- paie = SMB_MALLOC_P(struct pai_entry);
+static const char *create_pai_v2_entries(struct pai_val *paiv,
+ const char *entry_offset,
+ bool def_entry)
+{
+ int i;
+
+ for (i = 0; i < paiv->num_entries; i++) {
+ struct pai_entry *paie = SMB_MALLOC_P(struct pai_entry);
if (!paie) {
- free_inherited_info(paiv);
return NULL;
}
- paie->owner_type = (enum ace_owner)CVAL(entry_offset,0);
- switch( paie->owner_type) {
- case UID_ACE:
- paie->unix_ug.uid = (uid_t)IVAL(entry_offset,1);
- DEBUG(10,("create_pai_val: uid = %u\n", (unsigned int)paie->unix_ug.uid ));
- break;
- case GID_ACE:
- paie->unix_ug.gid = (gid_t)IVAL(entry_offset,1);
- DEBUG(10,("create_pai_val: gid = %u\n", (unsigned int)paie->unix_ug.gid ));
- break;
- case WORLD_ACE:
- paie->unix_ug.world = -1;
- DEBUG(10,("create_pai_val: world ace\n"));
- break;
- default:
- free_inherited_info(paiv);
- return NULL;
- }
- entry_offset += PAI_ENTRY_LENGTH;
- DLIST_ADD(paiv->entry_list, paie);
- }
+ paie->ace_flags = CVAL(entry_offset,0);
- for (i = 0; i < paiv->num_def_entries; i++) {
- struct pai_entry *paie;
+ entry_offset++;
- paie = SMB_MALLOC_P(struct pai_entry);
- if (!paie) {
- free_inherited_info(paiv);
+ if (!get_pai_owner_type(paie, entry_offset)) {
return NULL;
}
-
- paie->owner_type = (enum ace_owner)CVAL(entry_offset,0);
- switch( paie->owner_type) {
- case UID_ACE:
- paie->unix_ug.uid = (uid_t)IVAL(entry_offset,1);
- DEBUG(10,("create_pai_val: (def) uid = %u\n", (unsigned int)paie->unix_ug.uid ));
- break;
- case GID_ACE:
- paie->unix_ug.gid = (gid_t)IVAL(entry_offset,1);
- DEBUG(10,("create_pai_val: (def) gid = %u\n", (unsigned int)paie->unix_ug.gid ));
- break;
- case WORLD_ACE:
- paie->unix_ug.world = -1;
- DEBUG(10,("create_pai_val: (def) world ace\n"));
- break;
- default:
- free_inherited_info(paiv);
- return NULL;
+ if (!def_entry) {
+ DLIST_ADD(paiv->entry_list, paie);
+ } else {
+ DLIST_ADD(paiv->def_entry_list, paie);
}
- entry_offset += PAI_ENTRY_LENGTH;
- DLIST_ADD(paiv->def_entry_list, paie);
+ entry_offset += PAI_V2_ENTRY_LENGTH;
+ }
+ return entry_offset;
+}
+
+/************************************************************************
+ Convert to in-memory format from version 2.
+************************************************************************/
+
+static struct pai_val *create_pai_val_v2(const char *buf, size_t size)
+{
+ const char *entry_offset;
+ struct pai_val *paiv = NULL;
+
+ if (!check_pai_ok_v2(buf, size)) {
+ return NULL;
+ }
+
+ paiv = SMB_MALLOC_P(struct pai_val);
+ if (!paiv) {
+ return NULL;
+ }
+
+ memset(paiv, '\0', sizeof(struct pai_val));
+
+ paiv->sd_type = SVAL(buf,PAI_V2_TYPE_OFFSET);
+
+ paiv->num_entries = SVAL(buf,PAI_V2_NUM_ENTRIES_OFFSET);
+ paiv->num_def_entries = SVAL(buf,PAI_V2_NUM_DEFAULT_ENTRIES_OFFSET);
+
+ entry_offset = buf + PAI_V2_ENTRIES_BASE;
+
+ DEBUG(10,("create_pai_val_v2: num_entries = %u, num_def_entries = %u\n",
+ paiv->num_entries, paiv->num_def_entries ));
+
+ entry_offset = create_pai_v2_entries(paiv, entry_offset, false);
+ if (entry_offset == NULL) {
+ free_inherited_info(paiv);
+ return NULL;
+ }
+ entry_offset = create_pai_v2_entries(paiv, entry_offset, true);
+ if (entry_offset == NULL) {
+ free_inherited_info(paiv);
+ return NULL;
}
return paiv;
}
+/************************************************************************
+ Convert to in-memory format - from either version 1 or 2.
+************************************************************************/
+
+static struct pai_val *create_pai_val(const char *buf, size_t size)
+{
+ if (size < 1) {
+ return NULL;
+ }
+ if (CVAL(buf,PAI_VERSION_OFFSET) == PAI_V1_VERSION) {
+ return create_pai_val_v1(buf, size);
+ } else if (CVAL(buf,PAI_VERSION_OFFSET) == PAI_V2_VERSION) {
+ return create_pai_val_v2(buf, size);
+ } else {
+ return NULL;
+ }
+}
+
/************************************************************************
Load the user.SAMBA_PAI attribute.
************************************************************************/
struct pai_val *paiv = NULL;
ssize_t ret;
- if (!lp_map_acl_inherit(SNUM(fsp->conn)))
+ if (!lp_map_acl_inherit(SNUM(fsp->conn))) {
return NULL;
+ }
- if ((pai_buf = (char *)SMB_MALLOC(pai_buf_size)) == NULL)
+ if ((pai_buf = (char *)SMB_MALLOC(pai_buf_size)) == NULL) {
return NULL;
+ }
do {
- if (fsp->fh->fd != -1)
+ if (fsp->fh->fd != -1) {
ret = SMB_VFS_FGETXATTR(fsp, SAMBA_POSIX_INHERITANCE_EA_NAME,
pai_buf, pai_buf_size);
- else
+ } else {
ret = SMB_VFS_GETXATTR(fsp->conn,fsp->fsp_name,SAMBA_POSIX_INHERITANCE_EA_NAME,
pai_buf, pai_buf_size);
+ }
if (ret == -1) {
if (errno != ERANGE) {
paiv = create_pai_val(pai_buf, ret);
- if (paiv && paiv->pai_protected)
- DEBUG(10,("load_inherited_info: ACL is protected for file %s\n", fsp->fsp_name));
+ if (paiv) {
+ DEBUG(10,("load_inherited_info: ACL type is 0x%x for file %s\n",
+ (unsigned int)paiv->sd_type,
+ fsp->fsp_name));
+ }
SAFE_FREE(pai_buf);
return paiv;
paiv = create_pai_val(pai_buf, ret);
- if (paiv && paiv->pai_protected) {
- DEBUG(10,("load_inherited_info: ACL is protected for file %s\n", fname));
+ if (paiv) {
+ DEBUG(10,("load_inherited_info: ACL type 0x%x for file %s\n",
+ (unsigned int)paiv->sd_type,
+ fname));
}
SAFE_FREE(pai_buf);
Count a linked list of canonical ACE entries.
****************************************************************************/
-static size_t count_canon_ace_list( canon_ace *list_head )
+static size_t count_canon_ace_list( canon_ace *l_head )
{
size_t count = 0;
canon_ace *ace;
- for (ace = list_head; ace; ace = ace->next)
+ for (ace = l_head; ace; ace = ace->next)
count++;
return count;
Free a linked list of canonical ACE entries.
****************************************************************************/
-static void free_canon_ace_list( canon_ace *list_head )
+static void free_canon_ace_list( canon_ace *l_head )
{
canon_ace *list, *next;
- for (list = list_head; list; list = next) {
+ for (list = l_head; list; list = next) {
next = list->next;
- DLIST_REMOVE(list_head, list);
+ DLIST_REMOVE(l_head, list);
SAFE_FREE(list);
}
}
dbgtext( "MASK " );
break;
}
- if (pace->inherited)
- dbgtext( "(inherited) ");
+
+ dbgtext( "ace_flags = 0x%x ", (unsigned int)pace->ace_flags);
dbgtext( "perms ");
dbgtext( "%c", pace->perms & S_IRUSR ? 'r' : '-');
dbgtext( "%c", pace->perms & S_IWUSR ? 'w' : '-');
void create_file_sids(const SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid)
{
- uid_to_sid( powner_sid, psbuf->st_uid );
- gid_to_sid( pgroup_sid, psbuf->st_gid );
+ uid_to_sid( powner_sid, psbuf->st_ex_uid );
+ gid_to_sid( pgroup_sid, psbuf->st_ex_gid );
}
/****************************************************************************
static void merge_aces( canon_ace **pp_list_head )
{
- canon_ace *list_head = *pp_list_head;
+ canon_ace *l_head = *pp_list_head;
canon_ace *curr_ace_outer;
canon_ace *curr_ace_outer_next;
* with identical SIDs.
*/
- for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
+ for (curr_ace_outer = l_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
canon_ace *curr_ace;
canon_ace *curr_ace_next;
/* Merge two allow or two deny ACE's. */
curr_ace_outer->perms |= curr_ace->perms;
- DLIST_REMOVE(list_head, curr_ace);
+ DLIST_REMOVE(l_head, curr_ace);
SAFE_FREE(curr_ace);
curr_ace_outer_next = curr_ace_outer->next; /* We may have deleted the link. */
}
* appears only once in the list.
*/
- for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
+ for (curr_ace_outer = l_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
canon_ace *curr_ace;
canon_ace *curr_ace_next;
* The deny overrides the allow. Remove the allow.
*/
- DLIST_REMOVE(list_head, curr_ace);
+ DLIST_REMOVE(l_head, curr_ace);
SAFE_FREE(curr_ace);
curr_ace_outer_next = curr_ace_outer->next; /* We may have deleted the link. */
* before we can get to an allow ace.
*/
- DLIST_REMOVE(list_head, curr_ace_outer);
+ DLIST_REMOVE(l_head, curr_ace_outer);
SAFE_FREE(curr_ace_outer);
break;
}
/* We may have modified the list. */
- *pp_list_head = list_head;
+ *pp_list_head = l_head;
}
/****************************************************************************
if (sid_equal(&group_ace->trustee, &global_sid_World))
return True;
- /* Assume that the current user is in the current group (force group) */
+ /*
+ * if it's the current user, we already have the unix token
+ * and don't need to do the complex user_in_group_sid() call
+ */
+ if (uid_ace->unix_ug.uid == current_user.ut.uid) {
+ size_t i;
- if (uid_ace->unix_ug.uid == current_user.ut.uid && group_ace->unix_ug.gid == current_user.ut.gid)
- return True;
+ if (group_ace->unix_ug.gid == current_user.ut.gid) {
+ return True;
+ }
+
+ for (i=0; i < current_user.ut.ngroups; i++) {
+ if (group_ace->unix_ug.gid == current_user.ut.groups[i]) {
+ return True;
+ }
+ }
+ }
/* u_name talloc'ed off tos. */
u_name = uidtoname(uid_ace->unix_ug.uid);
if (!u_name) {
return False;
}
+
+ /*
+ * user_in_group_sid() uses create_token_from_username()
+ * which creates an artificial NT token given just a username,
+ * so this is not reliable for users from foreign domains
+ * exported by winbindd!
+ */
return user_in_group_sid(u_name, &group_ace->trustee);
}
ZERO_STRUCTP(pace);
pace->type = SMB_ACL_USER_OBJ;
pace->owner_type = UID_ACE;
- pace->unix_ug.uid = pst->st_uid;
+ pace->unix_ug.uid = pst->st_ex_uid;
pace->trustee = *pfile_owner_sid;
pace->attr = ALLOW_ACE;
apply_default_perms(params, is_directory, pace, S_IRUSR);
} else {
- pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRUSR, S_IWUSR, S_IXUSR);
+ pace->perms = unix_perms_to_acl_perms(pst->st_ex_mode, S_IRUSR, S_IWUSR, S_IXUSR);
}
DLIST_ADD(*pp_ace, pace);
ZERO_STRUCTP(pace);
pace->type = SMB_ACL_GROUP_OBJ;
pace->owner_type = GID_ACE;
- pace->unix_ug.uid = pst->st_gid;
+ pace->unix_ug.uid = pst->st_ex_gid;
pace->trustee = *pfile_grp_sid;
pace->attr = ALLOW_ACE;
if (setting_acl) {
pace->perms = 0;
apply_default_perms(params, is_directory, pace, S_IRGRP);
} else {
- pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRGRP, S_IWGRP, S_IXGRP);
+ pace->perms = unix_perms_to_acl_perms(pst->st_ex_mode, S_IRGRP, S_IWGRP, S_IXGRP);
}
DLIST_ADD(*pp_ace, pace);
pace->perms = 0;
apply_default_perms(params, is_directory, pace, S_IROTH);
} else
- pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IROTH, S_IWOTH, S_IXOTH);
+ pace->perms = unix_perms_to_acl_perms(pst->st_ex_mode, S_IROTH, S_IWOTH, S_IXOTH);
DLIST_ADD(*pp_ace, pace);
}
current_ace->type = SMB_ACL_OTHER;
} else if (sid_equal(¤t_ace->trustee, &global_sid_Creator_Owner)) {
current_ace->owner_type = UID_ACE;
- current_ace->unix_ug.uid = pst->st_uid;
+ current_ace->unix_ug.uid = pst->st_ex_uid;
current_ace->type = SMB_ACL_USER_OBJ;
/*
psa->flags |= SEC_ACE_FLAG_INHERIT_ONLY;
} else if (sid_equal(¤t_ace->trustee, &global_sid_Creator_Group)) {
current_ace->owner_type = GID_ACE;
- current_ace->unix_ug.gid = pst->st_gid;
+ current_ace->unix_ug.gid = pst->st_ex_gid;
current_ace->type = SMB_ACL_GROUP_OBJ;
/*
current_ace->owner_type = UID_ACE;
/* If it's the owning user, this is a user_obj, not
* a user. */
- if (current_ace->unix_ug.uid == pst->st_uid) {
+ if (current_ace->unix_ug.uid == pst->st_ex_uid) {
current_ace->type = SMB_ACL_USER_OBJ;
} else {
current_ace->type = SMB_ACL_USER;
current_ace->owner_type = GID_ACE;
/* If it's the primary group, this is a group_obj, not
* a group. */
- if (current_ace->unix_ug.gid == pst->st_gid) {
+ if (current_ace->unix_ug.gid == pst->st_ex_gid) {
current_ace->type = SMB_ACL_GROUP_OBJ;
} else {
current_ace->type = SMB_ACL_GROUP;
current_ace->perms |= map_nt_perms( &psa->access_mask, S_IRUSR);
current_ace->attr = (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) ? ALLOW_ACE : DENY_ACE;
- current_ace->inherited = ((psa->flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False);
+
+ /* Store the ace_flag. */
+ current_ace->ace_flags = psa->flags;
/*
* Now add the created ace to either the file list, the directory
* A default 3 element mode entry for a directory should be rwx --- ---.
*/
- pst->st_mode = create_default_mode(fsp, False);
+ pst->st_ex_mode = create_default_mode(fsp, False);
if (!ensure_canon_entry_valid(&file_ace, fsp->conn->params, fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
* it's a directory.
*/
- pst->st_mode = create_default_mode(fsp, True);
+ pst->st_ex_mode = create_default_mode(fsp, True);
if (dir_ace && !ensure_canon_entry_valid(&dir_ace, fsp->conn->params, fsp->is_directory, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
static void arrange_posix_perms(const char *filename, canon_ace **pp_list_head)
{
- canon_ace *list_head = *pp_list_head;
+ canon_ace *l_head = *pp_list_head;
canon_ace *owner_ace = NULL;
canon_ace *other_ace = NULL;
canon_ace *ace = NULL;
- for (ace = list_head; ace; ace = ace->next) {
+ for (ace = l_head; ace; ace = ace->next) {
if (ace->type == SMB_ACL_USER_OBJ)
owner_ace = ace;
else if (ace->type == SMB_ACL_OTHER) {
other_ace = ace;
}
}
-
+
if (!owner_ace || !other_ace) {
DEBUG(0,("arrange_posix_perms: Invalid POSIX permissions for file %s, missing owner or other.\n",
filename ));
*/
if (owner_ace) {
- DLIST_PROMOTE(list_head, owner_ace);
+ DLIST_PROMOTE(l_head, owner_ace);
}
if (other_ace) {
- DLIST_DEMOTE(list_head, other_ace, canon_ace *);
+ DLIST_DEMOTE(l_head, other_ace, canon_ace *);
}
/* We have probably changed the head of the list. */
- *pp_list_head = list_head;
+ *pp_list_head = l_head;
}
-
+
/****************************************************************************
Create a linked list of canonical ACE entries.
****************************************************************************/
const DOM_SID *powner, const DOM_SID *pgroup, struct pai_val *pal, SMB_ACL_TYPE_T the_acl_type)
{
mode_t acl_mask = (S_IRUSR|S_IWUSR|S_IXUSR);
- canon_ace *list_head = NULL;
+ canon_ace *l_head = NULL;
canon_ace *ace = NULL;
canon_ace *next_ace = NULL;
int entry_id = SMB_ACL_FIRST_ENTRY;
case SMB_ACL_USER_OBJ:
/* Get the SID from the owner. */
sid_copy(&sid, powner);
- unix_ug.uid = psbuf->st_uid;
+ unix_ug.uid = psbuf->st_ex_uid;
owner_type = UID_ACE;
break;
case SMB_ACL_USER:
* entries out of the blue when setting ACLs, so a get/set
* cycle will drop them.
*/
- if (the_acl_type == SMB_ACL_TYPE_ACCESS && *puid == psbuf->st_uid) {
+ if (the_acl_type == SMB_ACL_TYPE_ACCESS && *puid == psbuf->st_ex_uid) {
SMB_VFS_SYS_ACL_FREE_QUALIFIER(conn, (void *)puid,tagtype);
continue;
}
case SMB_ACL_GROUP_OBJ:
/* Get the SID from the owning group. */
sid_copy(&sid, pgroup);
- unix_ug.gid = psbuf->st_gid;
+ unix_ug.gid = psbuf->st_ex_gid;
owner_type = GID_ACE;
break;
case SMB_ACL_GROUP:
ace->trustee = sid;
ace->unix_ug = unix_ug;
ace->owner_type = owner_type;
- ace->inherited = get_inherited_flag(pal, ace, (the_acl_type == SMB_ACL_TYPE_DEFAULT));
+ ace->ace_flags = get_pai_flags(pal, ace, (the_acl_type == SMB_ACL_TYPE_DEFAULT));
- DLIST_ADD(list_head, ace);
+ DLIST_ADD(l_head, ace);
}
/*
* This next call will ensure we have at least a user/group/world set.
*/
- if (!ensure_canon_entry_valid(&list_head, conn->params,
- S_ISDIR(psbuf->st_mode), powner, pgroup,
+ if (!ensure_canon_entry_valid(&l_head, conn->params,
+ S_ISDIR(psbuf->st_ex_mode), powner, pgroup,
psbuf, False))
goto fail;
DEBUG(10,("canonicalise_acl: %s ace entries before arrange :\n", the_acl_type == SMB_ACL_TYPE_ACCESS ? "Access" : "Default" ));
- for ( ace_count = 0, ace = list_head; ace; ace = next_ace, ace_count++) {
+ for ( ace_count = 0, ace = l_head; ace; ace = next_ace, ace_count++) {
next_ace = ace->next;
/* Masks are only applied to entries other than USER_OBJ and OTHER. */
ace->perms &= acl_mask;
if (ace->perms == 0) {
- DLIST_PROMOTE(list_head, ace);
+ DLIST_PROMOTE(l_head, ace);
}
if( DEBUGLVL( 10 ) ) {
}
}
- arrange_posix_perms(fname,&list_head );
+ arrange_posix_perms(fname,&l_head );
- print_canon_ace_list( "canonicalise_acl: ace entries after arrange", list_head );
+ print_canon_ace_list( "canonicalise_acl: ace entries after arrange", l_head );
- return list_head;
+ return l_head;
fail:
- free_canon_ace_list(list_head);
+ free_canon_ace_list(l_head);
return NULL;
}
****************************************************************************/
static bool acl_group_override(connection_struct *conn,
- gid_t prim_gid,
+ const SMB_STRUCT_STAT *psbuf,
const char *fname)
{
- SMB_STRUCT_STAT sbuf;
+ struct smb_filename *smb_fname = NULL;
+ NTSTATUS status;
if ((errno != EPERM) && (errno != EACCES)) {
return false;
/* file primary group == user primary or supplementary group */
if (lp_acl_group_control(SNUM(conn)) &&
- current_user_in_group(prim_gid)) {
+ current_user_in_group(psbuf->st_ex_gid)) {
return true;
}
+ status = create_synthetic_smb_fname_split(talloc_tos(), fname, psbuf,
+ &smb_fname);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+
/* user has writeable permission */
if (lp_dos_filemode(SNUM(conn)) &&
- can_write_to_file(conn, fname, &sbuf)) {
+ can_write_to_file(conn, smb_fname)) {
+ TALLOC_FREE(smb_fname);
return true;
}
+ TALLOC_FREE(smb_fname);
return false;
}
Attempt to apply an ACL to a file or directory.
****************************************************************************/
-static bool set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, bool default_ace, gid_t prim_gid, bool *pacl_set_support)
+static bool set_canon_ace_list(files_struct *fsp,
+ canon_ace *the_ace,
+ bool default_ace,
+ const SMB_STRUCT_STAT *psbuf,
+ bool *pacl_set_support)
{
connection_struct *conn = fsp->conn;
bool ret = False;
*pacl_set_support = False;
}
- if (acl_group_override(conn, prim_gid, fsp->fsp_name)) {
+ if (acl_group_override(conn, psbuf, fsp->fsp_name)) {
int sret;
DEBUG(5,("set_canon_ace_list: acl group control on and current user in file %s primary group.\n",
*pacl_set_support = False;
}
- if (acl_group_override(conn, prim_gid, fsp->fsp_name)) {
+ if (acl_group_override(conn, psbuf, fsp->fsp_name)) {
int sret;
DEBUG(5,("set_canon_ace_list: acl group control on and current user in file %s primary group.\n",
return num_aces;
}
+/*
+ * Add or Replace ACE entry.
+ * In some cases we need to add a specific ACE for compatibility reasons.
+ * When doing that we must make sure we are not actually creating a duplicate
+ * entry. So we need to search whether an ACE entry already exist and eventually
+ * replacce the access mask, or add a completely new entry if none was found.
+ *
+ * This function assumes the array has enough space to add a new entry without
+ * any reallocation of memory.
+ */
+
+static void add_or_replace_ace(SEC_ACE *nt_ace_list, size_t *num_aces,
+ const DOM_SID *sid, enum security_ace_type type,
+ uint32_t mask, uint8_t flags)
+{
+ int i;
+
+ /* first search for a duplicate */
+ for (i = 0; i < *num_aces; i++) {
+ if (sid_equal(&nt_ace_list[i].trustee, sid) &&
+ (nt_ace_list[i].flags == flags)) break;
+ }
+
+ if (i < *num_aces) { /* found */
+ nt_ace_list[i].type = type;
+ nt_ace_list[i].access_mask = mask;
+ DEBUG(10, ("Replacing ACE %d with SID %s and flags %02x\n",
+ i, sid_string_dbg(sid), flags));
+ return;
+ }
+
+ /* not found, append it */
+ init_sec_ace(&nt_ace_list[(*num_aces)++], sid, type, mask, flags);
+}
+
+
/****************************************************************************
Reply to query a security descriptor from an fsp. If it succeeds it allocates
the space for the return elements and returns the size needed to return the
canon_ace *dir_ace = NULL;
SEC_ACE *nt_ace_list = NULL;
size_t num_profile_acls = 0;
+ DOM_SID orig_owner_sid;
SEC_DESC *psd = NULL;
+ int i;
/*
* Get the owner, group and world SIDs.
*/
+ create_file_sids(sbuf, &owner_sid, &group_sid);
+
if (lp_profile_acls(SNUM(conn))) {
/* For WXP SP1 the owner must be administrators. */
+ sid_copy(&orig_owner_sid, &owner_sid);
sid_copy(&owner_sid, &global_sid_Builtin_Administrators);
sid_copy(&group_sid, &global_sid_Builtin_Users);
- num_profile_acls = 2;
- } else {
- create_file_sids(sbuf, &owner_sid, &group_sid);
+ num_profile_acls = 3;
}
if ((security_info & DACL_SECURITY_INFORMATION) && !(security_info & PROTECTED_DACL_SECURITY_INFORMATION)) {
goto done;
}
- if (S_ISDIR(sbuf->st_mode) && def_acl) {
+ if (S_ISDIR(sbuf->st_ex_mode) && def_acl) {
dir_ace = canonicalise_acl(conn, name, def_acl,
sbuf,
&global_sid_Creator_Owner,
uint32_t acc = map_canon_ace_perms(SNUM(conn),
&nt_acl_type,
ace->perms,
- S_ISDIR(sbuf->st_mode));
+ S_ISDIR(sbuf->st_ex_mode));
init_sec_ace(&nt_ace_list[num_aces++],
&ace->trustee,
nt_acl_type,
acc,
- ace->inherited ?
- SEC_ACE_FLAG_INHERITED_ACE : 0);
+ ace->ace_flags);
}
/* The User must have access to a profile share - even
* if we can't map the SID. */
if (lp_profile_acls(SNUM(conn))) {
- init_sec_ace(&nt_ace_list[num_aces++],
- &global_sid_Builtin_Users,
- SEC_ACE_TYPE_ACCESS_ALLOWED,
- FILE_GENERIC_ALL, 0);
+ add_or_replace_ace(nt_ace_list, &num_aces,
+ &global_sid_Builtin_Users,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ FILE_GENERIC_ALL, 0);
}
for (ace = dir_ace; ace != NULL; ace = ace->next) {
uint32_t acc = map_canon_ace_perms(SNUM(conn),
&nt_acl_type,
ace->perms,
- S_ISDIR(sbuf->st_mode));
+ S_ISDIR(sbuf->st_ex_mode));
init_sec_ace(&nt_ace_list[num_aces++],
&ace->trustee,
nt_acl_type,
acc,
+ ace->ace_flags |
SEC_ACE_FLAG_OBJECT_INHERIT|
SEC_ACE_FLAG_CONTAINER_INHERIT|
- SEC_ACE_FLAG_INHERIT_ONLY|
- (ace->inherited ?
- SEC_ACE_FLAG_INHERITED_ACE : 0));
+ SEC_ACE_FLAG_INHERIT_ONLY);
}
/* The User must have access to a profile share - even
* if we can't map the SID. */
if (lp_profile_acls(SNUM(conn))) {
- init_sec_ace(&nt_ace_list[num_aces++], &global_sid_Builtin_Users, SEC_ACE_TYPE_ACCESS_ALLOWED, FILE_GENERIC_ALL,
- SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|
- SEC_ACE_FLAG_INHERIT_ONLY|0);
+ add_or_replace_ace(nt_ace_list, &num_aces,
+ &global_sid_Builtin_Users,
+ SEC_ACE_TYPE_ACCESS_ALLOWED,
+ FILE_GENERIC_ALL,
+ SEC_ACE_FLAG_OBJECT_INHERIT |
+ SEC_ACE_FLAG_CONTAINER_INHERIT |
+ SEC_ACE_FLAG_INHERIT_ONLY);
}
/*
num_aces = merge_default_aces(nt_ace_list, num_aces);
+ if (lp_profile_acls(SNUM(conn))) {
+ for (i = 0; i < num_aces; i++) {
+ if (sid_equal(&nt_ace_list[i].trustee, &owner_sid)) {
+ add_or_replace_ace(nt_ace_list, &num_aces,
+ &orig_owner_sid,
+ nt_ace_list[i].type,
+ nt_ace_list[i].access_mask,
+ nt_ace_list[i].flags);
+ break;
+ }
+ }
+ }
}
if (num_aces) {
* flag doesn't seem to bother Windows NT.
* Always set this if map acl inherit is turned off.
*/
- if (get_protected_flag(pal) || !lp_map_acl_inherit(SNUM(conn))) {
- psd->type |= SE_DESC_DACL_PROTECTED;
+ if (pal == NULL || !lp_map_acl_inherit(SNUM(conn))) {
+ psd->type |= SEC_DESC_DACL_PROTECTED;
+ } else {
+ psd->type |= pal->sd_type;
}
if (psd->dacl) {
DEBUG(10,("posix_get_nt_acl: called for file %s\n", name ));
/* Get the stat struct for the owner info. */
- if(SMB_VFS_STAT(conn, name, &sbuf) != 0) {
+ if(vfs_stat_smb_fname(conn, name, &sbuf) != 0) {
return map_nt_error_from_unix(errno);
}
posix_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, name, SMB_ACL_TYPE_ACCESS);
/* If it's a directory get the default POSIX ACL. */
- if(S_ISDIR(sbuf.st_mode)) {
+ if(S_ISDIR(sbuf.st_ex_mode)) {
def_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, name, SMB_ACL_TYPE_DEFAULT);
def_acl = free_empty_sys_acl(conn, def_acl);
}
return -1;
}
- if (SMB_VFS_STAT(conn,fname,&st)) {
+ /* only allow chown to the current user. This is more secure,
+ and also copes with the case where the SID in a take ownership ACL is
+ a local SID on the users workstation
+ */
+ if (uid != current_user.ut.uid) {
+ errno = EPERM;
+ return -1;
+ }
+
+ if (vfs_stat_smb_fname(conn,fname,&st)) {
return -1;
}
return -1;
}
- /* only allow chown to the current user. This is more secure,
- and also copes with the case where the SID in a take ownership ACL is
- a local SID on the users workstation
- */
- uid = current_user.ut.uid;
-
become_root();
/* Keep the current file gid the same. */
ret = SMB_VFS_FCHOWN(fsp, uid, (gid_t)-1);
const SEC_DESC *pcsd,
SEC_DESC **pp_new_sd)
{
+ struct smb_filename *smb_dname = NULL;
SEC_DESC *parent_sd = NULL;
files_struct *parent_fsp = NULL;
TALLOC_CTX *mem_ctx = talloc_tos();
char *parent_name = NULL;
SEC_ACE *new_ace = NULL;
unsigned int num_aces = pcsd->dacl->num_aces;
- SMB_STRUCT_STAT sbuf;
NTSTATUS status;
int info;
unsigned int i, j;
SEC_DESC *psd = dup_sec_desc(talloc_tos(), pcsd);
- bool is_dacl_protected = (pcsd->type & SE_DESC_DACL_PROTECTED);
-
- ZERO_STRUCT(sbuf);
+ bool is_dacl_protected = (pcsd->type & SEC_DESC_DACL_PROTECTED);
if (psd == NULL) {
return NT_STATUS_NO_MEMORY;
return NT_STATUS_NO_MEMORY;
}
+ status = create_synthetic_smb_fname_split(mem_ctx, parent_name, NULL,
+ &smb_dname);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
status = SMB_VFS_CREATE_FILE(
fsp->conn, /* conn */
NULL, /* req */
0, /* root_dir_fid */
- parent_name, /* fname */
- 0, /* create_file_flags */
+ smb_dname, /* fname */
FILE_READ_ATTRIBUTES, /* access_mask */
FILE_SHARE_NONE, /* share_access */
FILE_OPEN, /* create_disposition*/
NULL, /* sd */
NULL, /* ea_list */
&parent_fsp, /* result */
- &info, /* pinfo */
- &sbuf); /* psbuf */
+ &info); /* pinfo */
+
+ TALLOC_FREE(smb_fname);
if (!NT_STATUS_IS_OK(status)) {
return status;
bool acl_perms = False;
mode_t orig_mode = (mode_t)0;
NTSTATUS status;
- uid_t orig_uid;
- gid_t orig_gid;
+ bool set_acl_as_root = false;
+ bool acl_set_support = false;
+ bool ret = false;
DEBUG(10,("set_nt_acl: called for file %s\n", fsp->fsp_name ));
*/
if(fsp->is_directory || fsp->fh->fd == -1) {
- if(SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf) != 0)
+ if(vfs_stat_smb_fname(fsp->conn,fsp->fsp_name, &sbuf) != 0)
return map_nt_error_from_unix(errno);
} else {
if(SMB_VFS_FSTAT(fsp, &sbuf) != 0)
return map_nt_error_from_unix(errno);
}
- /* Save the original elements we check against. */
- orig_mode = sbuf.st_mode;
- orig_uid = sbuf.st_uid;
- orig_gid = sbuf.st_gid;
+ /* Save the original element we check against. */
+ orig_mode = sbuf.st_ex_mode;
/*
* Unpack the user/group/world id's.
* Noticed by Simo.
*/
- if (((user != (uid_t)-1) && (orig_uid != user)) || (( grp != (gid_t)-1) && (orig_gid != grp))) {
+ if (((user != (uid_t)-1) && (sbuf.st_ex_uid != user)) || (( grp != (gid_t)-1) && (sbuf.st_ex_gid != grp))) {
DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
*/
if(fsp->is_directory) {
- if(SMB_VFS_STAT(fsp->conn, fsp->fsp_name, &sbuf) != 0) {
+ if(vfs_stat_smb_fname(fsp->conn, fsp->fsp_name,
+ &sbuf) != 0) {
return map_nt_error_from_unix(errno);
}
} else {
- int ret;
+ int sret;
if(fsp->fh->fd == -1)
- ret = SMB_VFS_STAT(fsp->conn, fsp->fsp_name, &sbuf);
+ sret = vfs_stat_smb_fname(fsp->conn,
+ fsp->fsp_name,
+ &sbuf);
else
- ret = SMB_VFS_FSTAT(fsp, &sbuf);
+ sret = SMB_VFS_FSTAT(fsp, &sbuf);
- if(ret != 0)
+ if(sret != 0)
return map_nt_error_from_unix(errno);
}
- /* Save the original elements we check against. */
- orig_mode = sbuf.st_mode;
- orig_uid = sbuf.st_uid;
- orig_gid = sbuf.st_gid;
+ /* Save the original element we check against. */
+ orig_mode = sbuf.st_ex_mode;
+
+ /* If we successfully chowned, we know we must
+ * be able to set the acl, so do it as root.
+ */
+ set_acl_as_root = true;
}
create_file_sids(&sbuf, &file_owner_sid, &file_grp_sid);
-#if 0
- /* Disable this - prevents ACL inheritance from the ACL editor. JRA. */
-
- /* See here: http://www.codeproject.com/KB/winsdk/accessctrl2.aspx
- * for details and also the log trace in bug #4308. JRA.
- */
-
- if ((security_info_sent & DACL_SECURITY_INFORMATION) &&
- psd->dacl != NULL &&
- (psd->type & (SE_DESC_DACL_AUTO_INHERITED|
- SE_DESC_DACL_AUTO_INHERIT_REQ))==
- (SE_DESC_DACL_AUTO_INHERITED|
- SE_DESC_DACL_AUTO_INHERIT_REQ) ) {
- SEC_DESC *new_sd = NULL;
- status = append_parent_acl(fsp, psd, &new_sd);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
- psd = new_sd;
- }
-#endif
-
acl_perms = unpack_canon_ace( fsp, &sbuf, &file_owner_sid, &file_grp_sid,
&file_ace_list, &dir_ace_list, security_info_sent, psd);
/* Ignore W2K traverse DACL set. */
- if (file_ace_list || dir_ace_list) {
+ if (!file_ace_list && !dir_ace_list) {
+ return NT_STATUS_OK;
+ }
- if (!acl_perms) {
- DEBUG(3,("set_nt_acl: cannot set permissions\n"));
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
- return NT_STATUS_ACCESS_DENIED;
- }
+ if (!acl_perms) {
+ DEBUG(3,("set_nt_acl: cannot set permissions\n"));
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ return NT_STATUS_ACCESS_DENIED;
+ }
- /*
- * Only change security if we got a DACL.
- */
+ /*
+ * Only change security if we got a DACL.
+ */
+
+ if(!(security_info_sent & DACL_SECURITY_INFORMATION) || (psd->dacl == NULL)) {
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ return NT_STATUS_OK;
+ }
- if((security_info_sent & DACL_SECURITY_INFORMATION) && (psd->dacl != NULL)) {
+ /*
+ * Try using the POSIX ACL set first. Fall back to chmod if
+ * we have no ACL support on this filesystem.
+ */
+
+ if (acl_perms && file_ace_list) {
+ if (set_acl_as_root) {
+ become_root();
+ }
+ ret = set_canon_ace_list(fsp, file_ace_list, False, &sbuf, &acl_set_support);
+ if (set_acl_as_root) {
+ unbecome_root();
+ }
+ if (acl_set_support && ret == false) {
+ DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp->fsp_name, strerror(errno) ));
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ return map_nt_error_from_unix(errno);
+ }
+ }
- bool acl_set_support = False;
- bool ret = False;
+ if (acl_perms && acl_set_support && fsp->is_directory) {
+ if (dir_ace_list) {
+ if (set_acl_as_root) {
+ become_root();
+ }
+ ret = set_canon_ace_list(fsp, dir_ace_list, True, &sbuf, &acl_set_support);
+ if (set_acl_as_root) {
+ unbecome_root();
+ }
+ if (ret == false) {
+ DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp->fsp_name, strerror(errno) ));
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ return map_nt_error_from_unix(errno);
+ }
+ } else {
+ int sret = -1;
/*
- * Try using the POSIX ACL set first. Fall back to chmod if
- * we have no ACL support on this filesystem.
+ * No default ACL - delete one if it exists.
*/
- if (acl_perms && file_ace_list) {
- ret = set_canon_ace_list(fsp, file_ace_list, False, sbuf.st_gid, &acl_set_support);
- if (acl_set_support && ret == False) {
- DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp->fsp_name, strerror(errno) ));
+ if (set_acl_as_root) {
+ become_root();
+ }
+ sret = SMB_VFS_SYS_ACL_DELETE_DEF_FILE(conn, fsp->fsp_name);
+ if (set_acl_as_root) {
+ unbecome_root();
+ }
+ if (sret == -1) {
+ if (acl_group_override(conn, &sbuf, fsp->fsp_name)) {
+ DEBUG(5,("set_nt_acl: acl group control on and "
+ "current user in file %s primary group. Override delete_def_acl\n",
+ fsp->fsp_name ));
+
+ become_root();
+ sret = SMB_VFS_SYS_ACL_DELETE_DEF_FILE(conn, fsp->fsp_name);
+ unbecome_root();
+ }
+
+ if (sret == -1) {
+ DEBUG(3,("set_nt_acl: sys_acl_delete_def_file failed (%s)\n", strerror(errno)));
free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
+ free_canon_ace_list(dir_ace_list);
return map_nt_error_from_unix(errno);
}
}
+ }
+ }
- if (acl_perms && acl_set_support && fsp->is_directory) {
- if (dir_ace_list) {
- if (!set_canon_ace_list(fsp, dir_ace_list, True, sbuf.st_gid, &acl_set_support)) {
- DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp->fsp_name, strerror(errno) ));
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
- return map_nt_error_from_unix(errno);
- }
- } else {
+ if (acl_set_support) {
+ if (set_acl_as_root) {
+ become_root();
+ }
+ store_inheritance_attributes(fsp,
+ file_ace_list,
+ dir_ace_list,
+ psd->type);
+ if (set_acl_as_root) {
+ unbecome_root();
+ }
+ }
- /*
- * No default ACL - delete one if it exists.
- */
+ /*
+ * If we cannot set using POSIX ACLs we fall back to checking if we need to chmod.
+ */
- if (SMB_VFS_SYS_ACL_DELETE_DEF_FILE(conn, fsp->fsp_name) == -1) {
- int sret = -1;
-
- if (acl_group_override(conn, sbuf.st_gid, fsp->fsp_name)) {
- DEBUG(5,("set_nt_acl: acl group control on and "
- "current user in file %s primary group. Override delete_def_acl\n",
- fsp->fsp_name ));
-
- become_root();
- sret = SMB_VFS_SYS_ACL_DELETE_DEF_FILE(conn, fsp->fsp_name);
- unbecome_root();
- }
-
- if (sret == -1) {
- DEBUG(3,("set_nt_acl: sys_acl_delete_def_file failed (%s)\n", strerror(errno)));
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
- return map_nt_error_from_unix(errno);
- }
- }
- }
- }
+ if(!acl_set_support && acl_perms) {
+ mode_t posix_perms;
- if (acl_set_support) {
- store_inheritance_attributes(fsp, file_ace_list, dir_ace_list,
- (psd->type & SE_DESC_DACL_PROTECTED) ? True : False);
- }
+ if (!convert_canon_ace_to_posix_perms( fsp, file_ace_list, &posix_perms)) {
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
+ fsp->fsp_name ));
+ return NT_STATUS_ACCESS_DENIED;
+ }
- /*
- * If we cannot set using POSIX ACLs we fall back to checking if we need to chmod.
- */
+ if (orig_mode != posix_perms) {
+ int sret = -1;
- if(!acl_set_support && acl_perms) {
- mode_t posix_perms;
+ DEBUG(3,("set_nt_acl: chmod %s. perms = 0%o.\n",
+ fsp->fsp_name, (unsigned int)posix_perms ));
- if (!convert_canon_ace_to_posix_perms( fsp, file_ace_list, &posix_perms)) {
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
- DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
+ if (set_acl_as_root) {
+ become_root();
+ }
+ sret = SMB_VFS_CHMOD(conn,fsp->fsp_name, posix_perms);
+ if (set_acl_as_root) {
+ unbecome_root();
+ }
+ if(sret == -1) {
+ if (acl_group_override(conn, &sbuf, fsp->fsp_name)) {
+ DEBUG(5,("set_nt_acl: acl group control on and "
+ "current user in file %s primary group. Override chmod\n",
fsp->fsp_name ));
- return NT_STATUS_ACCESS_DENIED;
+
+ become_root();
+ sret = SMB_VFS_CHMOD(conn,fsp->fsp_name, posix_perms);
+ unbecome_root();
}
- if (orig_mode != posix_perms) {
-
- DEBUG(3,("set_nt_acl: chmod %s. perms = 0%o.\n",
- fsp->fsp_name, (unsigned int)posix_perms ));
-
- if(SMB_VFS_CHMOD(conn,fsp->fsp_name, posix_perms) == -1) {
- int sret = -1;
- if (acl_group_override(conn, sbuf.st_gid, fsp->fsp_name)) {
- DEBUG(5,("set_nt_acl: acl group control on and "
- "current user in file %s primary group. Override chmod\n",
- fsp->fsp_name ));
-
- become_root();
- sret = SMB_VFS_CHMOD(conn,fsp->fsp_name, posix_perms);
- unbecome_root();
- }
-
- if (sret == -1) {
- DEBUG(3,("set_nt_acl: chmod %s, 0%o failed. Error = %s.\n",
- fsp->fsp_name, (unsigned int)posix_perms, strerror(errno) ));
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
- return map_nt_error_from_unix(errno);
- }
- }
+ if (sret == -1) {
+ DEBUG(3,("set_nt_acl: chmod %s, 0%o failed. Error = %s.\n",
+ fsp->fsp_name, (unsigned int)posix_perms, strerror(errno) ));
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+ return map_nt_error_from_unix(errno);
}
}
}
-
- free_canon_ace_list(file_ace_list);
- free_canon_ace_list(dir_ace_list);
}
+ free_canon_ace_list(file_ace_list);
+ free_canon_ace_list(dir_ace_list);
+
return NT_STATUS_OK;
}
{
SMB_ACL_T def_acl = NULL;
- if (num_def_acls && !S_ISDIR(psbuf->st_mode)) {
- DEBUG(5,("set_unix_posix_default_acl: Can't set default ACL on non-directory file %s\n", fname ));
- errno = EISDIR;
- return False;
+ if (!S_ISDIR(psbuf->st_ex_mode)) {
+ if (num_def_acls) {
+ DEBUG(5,("set_unix_posix_default_acl: Can't set default ACL on non-directory file %s\n", fname ));
+ errno = EISDIR;
+ return False;
+ } else {
+ return True;
+ }
}
if (!num_def_acls) {
git.samba.org / ira / wip.git / blobdiff