* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "util.h"
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
+#ifdef ENABLE_XATTR
+#define HAVE_SETXATTR
+#endif
+
+#include <stdarg.h>
+
#include <stdio.h>
-#ifdef HAVE_STDLIB_H
#include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
#include <string.h>
-#endif
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_SETXATTR
#include <sys/stat.h>
#endif
-#include <stdarg.h>
-
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
return (outsize ? (int)outsize : -errno);
}
+/*
+ * Get the ntfs attributes from an inode
+ * The attributes are returned according to cpu endianness
+ *
+ * Returns the attributes if successful (cannot be zero)
+ * 0 if failed (errno to tell why)
+ */
+
+u32 ntfs_get_inode_attributes(ntfs_inode *ni)
+{
+ u32 attrib = -1;
+
+ if (ni) {
+ attrib = le32_to_cpu(ni->flags);
+ if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)
+ attrib |= const_le32_to_cpu(FILE_ATTR_DIRECTORY);
+ else
+ attrib &= ~const_le32_to_cpu(FILE_ATTR_DIRECTORY);
+ if (!attrib)
+ attrib |= const_le32_to_cpu(FILE_ATTR_NORMAL);
+ } else
+ errno = EINVAL;
+ return (attrib);
+}
+
+/*
+ * Set the ntfs attributes on an inode
+ * The attribute is expected according to cpu endianness
+ *
+ * Returns 0 if successful
+ * -1 if failed (errno to tell why)
+ */
+
+int ntfs_set_inode_attributes(ntfs_inode *ni, u32 attrib)
+{
+ le32 settable;
+ ATTR_FLAGS dirflags;
+ int res;
+
+ res = -1;
+ if (ni) {
+ settable = FILE_ATTR_SETTABLE;
+ res = 0;
+ if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
+ /*
+ * Accept changing compression for a directory
+ * and set index root accordingly
+ */
+ settable |= FILE_ATTR_COMPRESSED;
+ if ((ni->flags ^ cpu_to_le32(attrib))
+ & FILE_ATTR_COMPRESSED) {
+ if (ni->flags & FILE_ATTR_COMPRESSED)
+ dirflags = const_cpu_to_le16(0);
+ else
+ dirflags = ATTR_IS_COMPRESSED;
+ res = ntfs_attr_set_flags(ni, AT_INDEX_ROOT,
+ NTFS_INDEX_I30, 4, dirflags,
+ ATTR_COMPRESSION_MASK);
+ }
+ }
+ if (!res) {
+ ni->flags = (ni->flags & ~settable)
+ | (cpu_to_le32(attrib) & settable);
+ NInoFileNameSetDirty(ni);
+ NInoSetDirty(ni);
+ }
+ } else
+ errno = EINVAL;
+ return (res);
+}
+
/*
* Return the ntfs attribute into an extended attribute
* The attribute is expected according to cpu endianness
const char *value, size_t size, int flags)
{
u32 attrib;
- le32 settable;
- ATTR_FLAGS dirflags;
int res;
res = -1;
if (!(flags & XATTR_CREATE)) {
/* copy to avoid alignment problems */
memcpy(&attrib,value,sizeof(FILE_ATTR_FLAGS));
- settable = FILE_ATTR_SETTABLE;
- res = 0;
- if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
- /*
- * Accept changing compression for a directory
- * and set index root accordingly
- */
- settable |= FILE_ATTR_COMPRESSED;
- if ((ni->flags ^ cpu_to_le32(attrib))
- & FILE_ATTR_COMPRESSED) {
- if (ni->flags & FILE_ATTR_COMPRESSED)
- dirflags = const_cpu_to_le16(0);
- else
- dirflags = ATTR_IS_COMPRESSED;
- res = ntfs_attr_set_flags(ni,
- AT_INDEX_ROOT,
- NTFS_INDEX_I30, 4,
- dirflags,
- ATTR_COMPRESSION_MASK);
- }
- }
- if (!res) {
- ni->flags = (ni->flags & ~settable)
- | (cpu_to_le32(attrib) & settable);
- NInoFileNameSetDirty(ni);
- NInoSetDirty(ni);
- }
+ res = ntfs_set_inode_attributes(ni, attrib);
} else
errno = EEXIST;
} else
return (ok);
}
-#if 0
+int ntfs_get_inode_security(ntfs_inode *ni, u32 selection,
+ char *buf, u32 buflen, u32 *psize)
+{
+ int res;
+ char *attr;
+
+ res = 0;
+ if (ni) {
+ attr = getsecurityattr(ni->vol, ni);
+ if (attr) {
+ if (feedsecurityattr(attr, selection,
+ buf, buflen, psize)) {
+ if (test_nino_flag(ni, v3_Extensions)
+ && ni->security_id)
+ res = le32_to_cpu(
+ ni->security_id);
+ else
+ res = -1;
+ }
+ free(attr);
+ }
+ } else
+ errno = EINVAL;
+ return (res);
+}
+
+int ntfs_set_inode_security(ntfs_inode *ni, u32 selection, const char *attr)
+{
+ const SECURITY_DESCRIPTOR_RELATIVE *phead;
+ int attrsz;
+ BOOL missing;
+ char *oldattr;
+ int res;
+
+ res = -1; /* default return */
+ if (ni) {
+ phead = (const SECURITY_DESCRIPTOR_RELATIVE*)attr;
+ attrsz = ntfs_attr_size(attr);
+ /* if selected, owner and group must be present or defaulted */
+ missing = ((selection & OWNER_SECURITY_INFORMATION)
+ && !phead->owner
+ && !(phead->control & SE_OWNER_DEFAULTED))
+ || ((selection & GROUP_SECURITY_INFORMATION)
+ && !phead->group
+ && !(phead->control & SE_GROUP_DEFAULTED));
+ if (!missing
+ && (phead->control & SE_SELF_RELATIVE)
+ && ntfs_valid_descr(attr, attrsz)) {
+ oldattr = getsecurityattr(ni->vol, ni);
+ if (oldattr) {
+ if (mergesecurityattr(ni->vol, oldattr, attr,
+ selection, ni)) {
+ res = 0;
+ }
+ free(oldattr);
+ }
+ } else
+ errno = EINVAL;
+ } else
+ errno = EINVAL;
+ return (res);
+}
+
/*
* Return the security descriptor of a file
* This is intended to be similar to GetFileSecurity() from Win32
errno = EINVAL;
return (res);
}
-#endif
-int ntfs_inode_get_security(ntfs_inode *ni, u32 selection, char *buf,
- u32 buflen, u32 *psize)
-{
- char *attr;
- int res = 0;
-
- attr = getsecurityattr(ni->vol, ni);
- if (attr) {
- if (feedsecurityattr(attr,selection,
- buf,buflen,psize)) {
- if (test_nino_flag(ni, v3_Extensions)
- && ni->security_id)
- res = le32_to_cpu(
- ni->security_id);
- else
- res = -1;
- }
- free(attr);
- }
- return (res);
-}
-/*
- * Check the validity of the ACEs in a DACL or SACL
- */
-
-static BOOL valid_acl(const ACL *pacl, unsigned int end)
-{
- const ACCESS_ALLOWED_ACE *pace;
- unsigned int offace;
- unsigned int acecnt;
- unsigned int acesz;
- unsigned int nace;
- BOOL ok;
-
- ok = TRUE;
- acecnt = le16_to_cpu(pacl->ace_count);
- offace = sizeof(ACL);
- for (nace = 0; (nace < acecnt) && ok; nace++) {
- /* be sure the beginning is within range */
- if ((offace + sizeof(ACCESS_ALLOWED_ACE)) > end)
- ok = FALSE;
- else {
- pace = (const ACCESS_ALLOWED_ACE*)
- &((const char*)pacl)[offace];
- acesz = le16_to_cpu(pace->size);
- if (((offace + acesz) > end)
- || !ntfs_valid_sid(&pace->sid)
- || ((ntfs_sid_size(&pace->sid) + 8) != (int)acesz))
- ok = FALSE;
- offace += acesz;
- }
- }
- return (ok);
-}
-/*
- * Do sanity checks on security descriptors read from storage
- * basically, we make sure that every field holds within
- * allocated storage
- * Should not be called with a NULL argument
- * returns TRUE if considered safe
- * if not, error should be logged by caller
- */
-static BOOL _ntfs_valid_descr(const char *securattr, unsigned int attrsz)
-{
- const SECURITY_DESCRIPTOR_RELATIVE *phead;
- const ACL *pdacl;
- const ACL *psacl;
- unsigned int offdacl;
- unsigned int offsacl;
- unsigned int offowner;
- unsigned int offgroup;
- BOOL ok;
-
- ok = TRUE;
-
- /*
- * first check overall size if within allocation range
- * and a DACL is present
- * and owner and group SID are valid
- */
-
- phead = (const SECURITY_DESCRIPTOR_RELATIVE*)securattr;
- offdacl = le32_to_cpu(phead->dacl);
- offsacl = le32_to_cpu(phead->sacl);
- offowner = le32_to_cpu(phead->owner);
- offgroup = le32_to_cpu(phead->group);
- pdacl = (const ACL*)&securattr[offdacl];
- psacl = (const ACL*)&securattr[offsacl];
-
- /*
- * size check occurs before the above pointers are used
- *
- * "DR Watson" standard directory on WinXP has an
- * old revision and no DACL though SE_DACL_PRESENT is set
- */
- if ((attrsz >= sizeof(SECURITY_DESCRIPTOR_RELATIVE))
- && (phead->revision == SECURITY_DESCRIPTOR_REVISION)
- && (offowner >= sizeof(SECURITY_DESCRIPTOR_RELATIVE))
- && ((offowner + 2) < attrsz)
- && (offgroup >= sizeof(SECURITY_DESCRIPTOR_RELATIVE))
- && ((offgroup + 2) < attrsz)
- && (!offdacl
- || ((offdacl >= sizeof(SECURITY_DESCRIPTOR_RELATIVE))
- && (offdacl+sizeof(ACL) <= attrsz)))
- && (!offsacl
- || ((offsacl >= sizeof(SECURITY_DESCRIPTOR_RELATIVE))
- && (offsacl+sizeof(ACL) <= attrsz)))
- && !(phead->owner & const_cpu_to_le32(3))
- && !(phead->group & const_cpu_to_le32(3))
- && !(phead->dacl & const_cpu_to_le32(3))
- && !(phead->sacl & const_cpu_to_le32(3))
- && (ntfs_attr_size(securattr) <= attrsz)
- && ntfs_valid_sid((const SID*)&securattr[offowner])
- && ntfs_valid_sid((const SID*)&securattr[offgroup])
- /*
- * if there is an ACL, as indicated by offdacl,
- * require SE_DACL_PRESENT
- * but "Dr Watson" has SE_DACL_PRESENT though no DACL
- */
- && (!offdacl
- || ((phead->control & SE_DACL_PRESENT)
- && ((pdacl->revision == ACL_REVISION)
- || (pdacl->revision == ACL_REVISION_DS))))
- /* same for SACL */
- && (!offsacl
- || ((phead->control & SE_SACL_PRESENT)
- && ((psacl->revision == ACL_REVISION)
- || (psacl->revision == ACL_REVISION_DS))))) {
- /*
- * Check the DACL and SACL if present
- */
- if ((offdacl && !valid_acl(pdacl,attrsz - offdacl))
- || (offsacl && !valid_acl(psacl,attrsz - offsacl)))
- ok = FALSE;
- } else {
- ok = FALSE;
- }
- return (ok);
-}
-
-/*
- * Set security data on a NTFS file given an inode
- *
- * Returns nonzero on success
- */
-int _ntfs_set_file_security(ntfs_inode *ni, u32 selection,
- const char *attr)
-{
- const SECURITY_DESCRIPTOR_RELATIVE *phead;
- int attrsz;
- BOOL missing;
- char *oldattr;
- int res;
-
- res = 0; /* default return */
- phead = (const SECURITY_DESCRIPTOR_RELATIVE*)attr;
- attrsz = ntfs_attr_size(attr);
- /* if selected, owner and group must be present or defaulted */
- missing = ((selection & OWNER_SECURITY_INFORMATION)
- && !phead->owner
- && !(phead->control & SE_OWNER_DEFAULTED))
- || ((selection & GROUP_SECURITY_INFORMATION)
- && !phead->group
- && !(phead->control & SE_GROUP_DEFAULTED));
- if (!missing
- && (phead->control & SE_SELF_RELATIVE)
- && _ntfs_valid_descr(attr, attrsz)) {
- oldattr = getsecurityattr(ni->vol, ni);
- if (oldattr) {
- if (mergesecurityattr(
- ni->vol,
- oldattr, attr,
- selection, ni)) {
- if (test_nino_flag(ni,
- v3_Extensions))
- res = le32_to_cpu(
- ni->security_id);
- else
- res = -1;
- }
- free(oldattr);
- }
- } else
- errno = EINVAL;
- return (res);
-}
-
-
-#if 0
/*
* Return the attributes of a file
* This is intended to be similar to GetFileAttributes() from Win32
if (scapi && (scapi->magic == MAGIC_API) && path) {
ni = ntfs_pathname_to_inode(scapi->security.vol, NULL, path);
if (ni) {
- attrib = le32_to_cpu(ni->flags);
- if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)
- attrib |= const_le32_to_cpu(FILE_ATTR_DIRECTORY);
- else
- attrib &= ~const_le32_to_cpu(FILE_ATTR_DIRECTORY);
- if (!attrib)
- attrib |= const_le32_to_cpu(FILE_ATTR_NORMAL);
-
+ attrib = ntfs_get_inode_attributes(ni);
ntfs_inode_close(ni);
} else
errno = ENOENT;
const char *path, s32 attrib)
{
ntfs_inode *ni;
- le32 settable;
- ATTR_FLAGS dirflags;
int res;
res = 0; /* default return */
if (scapi && (scapi->magic == MAGIC_API) && path) {
ni = ntfs_pathname_to_inode(scapi->security.vol, NULL, path);
if (ni) {
- settable = FILE_ATTR_SETTABLE;
- if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
- /*
- * Accept changing compression for a directory
- * and set index root accordingly
- */
- settable |= FILE_ATTR_COMPRESSED;
- if ((ni->flags ^ cpu_to_le32(attrib))
- & FILE_ATTR_COMPRESSED) {
- if (ni->flags & FILE_ATTR_COMPRESSED)
- dirflags = const_cpu_to_le16(0);
- else
- dirflags = ATTR_IS_COMPRESSED;
- res = ntfs_attr_set_flags(ni,
- AT_INDEX_ROOT,
- NTFS_INDEX_I30, 4,
- dirflags,
- ATTR_COMPRESSION_MASK);
- }
- }
- if (!res) {
- ni->flags = (ni->flags & ~settable)
- | (cpu_to_le32(attrib) & settable);
- NInoSetDirty(ni);
- NInoFileNameSetDirty(ni);
- }
- if (!ntfs_inode_close(ni))
+ /* Win32 convention here : -1 means successful */
+ if (!ntfs_set_inode_attributes(ni, attrib))
res = -1;
+ if (ntfs_inode_close(ni))
+ res = 0;
} else
errno = ENOENT;
}
return (res);
}
-#endif
-
-int ntfs_inode_get_attributes(ntfs_inode *ni)
-{
- s32 attrib;
-
- attrib = le32_to_cpu(ni->flags);
- if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)
- attrib |= const_le32_to_cpu(FILE_ATTR_DIRECTORY);
- else
- attrib &= ~const_le32_to_cpu(FILE_ATTR_DIRECTORY);
- if (!attrib)
- attrib |= const_le32_to_cpu(FILE_ATTR_NORMAL);
- return (attrib);
-}
-
-/*
- * Set attributes of a NTFS file given an inode
- *
- * Returns nonzero on success
- */
-int _ntfs_set_file_attributes(ntfs_inode *ni, s32 attrib)
-{
- le32 settable = FILE_ATTR_SETTABLE;
- ATTR_FLAGS dirflags;
- int ret = 0;
-
- if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
- /*
- * Accept changing compression for a directory
- * and set index root accordingly
- */
- settable |= FILE_ATTR_COMPRESSED;
- if ((ni->flags ^ cpu_to_le32(attrib))
- & FILE_ATTR_COMPRESSED) {
- if (ni->flags & FILE_ATTR_COMPRESSED)
- dirflags = const_cpu_to_le16(0);
- else
- dirflags = ATTR_IS_COMPRESSED;
- ret = ntfs_attr_set_flags(ni,
- AT_INDEX_ROOT,
- NTFS_INDEX_I30, 4,
- dirflags,
- ATTR_COMPRESSION_MASK);
- }
- }
- if (ret == 0) {
- ni->flags = (ni->flags & ~settable)
- | (cpu_to_le32(attrib) & settable);
- NInoSetDirty(ni);
- NInoFileNameSetDirty(ni);
- ret = -1;
- }
- return ret;
-}
-#if 0
BOOL ntfs_read_directory(struct SECURITY_API *scapi,
const char *path, ntfs_filldir_t callback, void *context)
{
return (ok);
}
-#endif
git://wimlib.net / wimlib / blobdiff