X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Finode.c;h=42faa194fba99165b18a1464b389255d3844a955;hp=34508659fa6724d56142552960a659df273a69ea;hb=af141a23c4d1540b8a64759bb68c7cd7ff054e72;hpb=a1d2684c03d066f103ae50485f48512613b84575

diff --git a/src/inode.c b/src/inode.c
index 34508659..42faa194 100644
--- a/src/inode.c
+++ b/src/inode.c
@@ -39,6 +39,8 @@
 #include "wimlib/security.h"
 #include "wimlib/timestamp.h"
 
+#include <errno.h>
+
 /* Allocate a new inode.  Set the timestamps to the current time.  */
 struct wim_inode *
 new_inode(void)
@@ -108,6 +110,8 @@ free_inode(struct wim_inode *inode)
 			destroy_ads_entry(&inode->i_ads_entries[i]);
 		FREE(inode->i_ads_entries);
 	}
+	if (inode->i_extra)
+		FREE(inode->i_extra);
 	/* HACK: This may instead delete the inode from i_list, but hlist_del()
 	 * behaves the same as list_del(). */
 	if (!hlist_unhashed(&inode->i_hlist))
@@ -136,96 +140,64 @@ ads_entry_has_name(const struct wim_ads_entry *entry,
  *
  * If @p stream_name is the empty string, NULL is returned --- that is, this
  * function will not return "unnamed" alternate data stream entries.
+ *
+ * If NULL is returned, errno is set.
  */
 struct wim_ads_entry *
-inode_get_ads_entry(struct wim_inode *inode, const tchar *stream_name,
-		    u16 *idx_ret)
+inode_get_ads_entry(struct wim_inode *inode, const tchar *stream_name)
 {
+	int ret;
+	const utf16lechar *stream_name_utf16le;
+	size_t stream_name_utf16le_nbytes;
+	u16 i;
+	struct wim_ads_entry *result;
+
 	if (inode->i_num_ads == 0) {
+		errno = ENOENT;
 		return NULL;
-	} else {
-		size_t stream_name_utf16le_nbytes;
-		u16 i;
-		struct wim_ads_entry *result;
-
-		if (stream_name[0] == T('\0'))
-			return NULL;
+	}
 
-	#if TCHAR_IS_UTF16LE
-		const utf16lechar *stream_name_utf16le;
+	if (stream_name[0] == T('\0')) {
+		errno = ENOENT;
+		return NULL;
+	}
 
-		stream_name_utf16le = stream_name;
-		stream_name_utf16le_nbytes = tstrlen(stream_name) * sizeof(tchar);
-	#else
-		utf16lechar *stream_name_utf16le;
+	ret = tstr_get_utf16le_and_len(stream_name, &stream_name_utf16le,
+				       &stream_name_utf16le_nbytes);
+	if (ret)
+		return NULL;
 
+	i = 0;
+	result = NULL;
+	do {
+		if (ads_entry_has_name(&inode->i_ads_entries[i],
+				       stream_name_utf16le,
+				       stream_name_utf16le_nbytes,
+				       default_ignore_case))
 		{
-			int ret = tstr_to_utf16le(stream_name,
-						  tstrlen(stream_name) *
-						      sizeof(tchar),
-						  &stream_name_utf16le,
-						  &stream_name_utf16le_nbytes);
-			if (ret)
-				return NULL;
+			result = &inode->i_ads_entries[i];
+			break;
 		}
-	#endif
-		i = 0;
-		result = NULL;
-		do {
-			if (ads_entry_has_name(&inode->i_ads_entries[i],
-					       stream_name_utf16le,
-					       stream_name_utf16le_nbytes,
-					       default_ignore_case))
-			{
-				if (idx_ret)
-					*idx_ret = i;
-				result = &inode->i_ads_entries[i];
-				break;
-			}
-		} while (++i != inode->i_num_ads);
-	#if !TCHAR_IS_UTF16LE
-		FREE(stream_name_utf16le);
-	#endif
-		return result;
-	}
-}
+	} while (++i != inode->i_num_ads);
 
-static int
-init_ads_entry(struct wim_ads_entry *ads_entry, const void *name,
-	       size_t name_nbytes, bool is_utf16le)
-{
-	int ret = 0;
-	memset(ads_entry, 0, sizeof(*ads_entry));
+	tstr_put_utf16le(stream_name_utf16le);
 
-	if (is_utf16le) {
-		utf16lechar *p = MALLOC(name_nbytes + sizeof(utf16lechar));
-		if (p == NULL)
-			return WIMLIB_ERR_NOMEM;
-		memcpy(p, name, name_nbytes);
-		p[name_nbytes / 2] = cpu_to_le16(0);
-		ads_entry->stream_name = p;
-		ads_entry->stream_name_nbytes = name_nbytes;
-	} else {
-		if (name && *(const tchar*)name != T('\0')) {
-			ret = get_utf16le_string(name, &ads_entry->stream_name,
-						 &ads_entry->stream_name_nbytes);
-		}
-	}
-	return ret;
+	if (!result)
+		errno = ENOENT;
+	return result;
 }
 
 static struct wim_ads_entry *
-do_inode_add_ads(struct wim_inode *inode, const void *stream_name,
-		 size_t stream_name_nbytes, bool is_utf16le)
+do_inode_add_ads(struct wim_inode *inode,
+		 utf16lechar *stream_name, size_t stream_name_nbytes)
 {
 	u16 num_ads;
 	struct wim_ads_entry *ads_entries;
 	struct wim_ads_entry *new_entry;
 
-	wimlib_assert(stream_name_nbytes != 0);
-
 	if (inode->i_num_ads >= 0xfffe) {
 		ERROR("Too many alternate data streams in one inode!");
+		errno = EFBIG;
 		return NULL;
 	}
 	num_ads = inode->i_num_ads + 1;
@@ -238,8 +210,10 @@ do_inode_add_ads(struct wim_inode *inode, const void *stream_name,
 	inode->i_ads_entries = ads_entries;
 
 	new_entry = &inode->i_ads_entries[num_ads - 1];
-	if (init_ads_entry(new_entry, stream_name, stream_name_nbytes, is_utf16le))
-		return NULL;
+
+	memset(new_entry, 0, sizeof(struct wim_ads_entry));
+	new_entry->stream_name = stream_name;
+	new_entry->stream_name_nbytes = stream_name_nbytes;
 	new_entry->stream_id = inode->i_next_stream_id++;
 	inode->i_num_ads = num_ads;
 	return new_entry;
@@ -247,49 +221,67 @@ do_inode_add_ads(struct wim_inode *inode, const void *stream_name,
 
 struct wim_ads_entry *
 inode_add_ads_utf16le(struct wim_inode *inode,
-		      const utf16lechar *stream_name,
-		      size_t stream_name_nbytes)
+		      const utf16lechar *stream_name, size_t stream_name_nbytes)
 {
-	DEBUG("Add alternate data stream \"%"WS"\"", stream_name);
-	return do_inode_add_ads(inode, stream_name, stream_name_nbytes, true);
+	utf16lechar *dup = NULL;
+	struct wim_ads_entry *result;
+
+	if (stream_name_nbytes) {
+		dup = utf16le_dupz(stream_name, stream_name_nbytes);
+		if (!dup)
+			return NULL;
+	}
+
+	result = do_inode_add_ads(inode, dup, stream_name_nbytes);
+	if (!result)
+		FREE(dup);
+	return result;
 }
 
 /*
  * Add an alternate stream entry to a WIM inode.  On success, returns a pointer
- * to the new entry; on failure, returns NULL.
- *
- * @stream_name must be a nonempty string.
+ * to the new entry; on failure, returns NULL and sets errno.
  */
 struct wim_ads_entry *
 inode_add_ads(struct wim_inode *inode, const tchar *stream_name)
 {
-	DEBUG("Add alternate data stream \"%"TS"\"", stream_name);
-	return do_inode_add_ads(inode, stream_name,
-				tstrlen(stream_name) * sizeof(tchar),
-				TCHAR_IS_UTF16LE);
+	utf16lechar *stream_name_utf16le = NULL;
+	size_t stream_name_utf16le_nbytes = 0;
+	struct wim_ads_entry *result;
+
+	if (stream_name && *stream_name)
+		if (tstr_to_utf16le(stream_name,
+				    tstrlen(stream_name) * sizeof(tchar),
+				    &stream_name_utf16le,
+				    &stream_name_utf16le_nbytes))
+			return NULL;
+
+	result = do_inode_add_ads(inode, stream_name_utf16le,
+				  stream_name_utf16le_nbytes);
+	if (!result)
+		FREE(stream_name_utf16le);
+	return result;
 }
 
-int
+struct wim_ads_entry *
 inode_add_ads_with_data(struct wim_inode *inode, const tchar *name,
 			const void *value, size_t size,
 			struct wim_lookup_table *lookup_table)
 {
-	struct wim_ads_entry *new_ads_entry;
+	struct wim_ads_entry *new_entry;
 
 	wimlib_assert(inode->i_resolved);
 
-	new_ads_entry = inode_add_ads(inode, name);
-	if (new_ads_entry == NULL)
-		return WIMLIB_ERR_NOMEM;
+	new_entry = inode_add_ads(inode, name);
+	if (!new_entry)
+		return NULL;
 
-	new_ads_entry->lte = new_stream_from_data_buffer(value, size,
-							 lookup_table);
-	if (new_ads_entry->lte == NULL) {
-		inode_remove_ads(inode, new_ads_entry - inode->i_ads_entries,
-				 lookup_table);
-		return WIMLIB_ERR_NOMEM;
+	new_entry->lte = new_stream_from_data_buffer(value, size, lookup_table);
+	if (!new_entry->lte) {
+		inode_remove_ads(inode, new_entry, lookup_table);
+		return NULL;
 	}
-	return 0;
+	return new_entry;
 }
 
 bool
@@ -307,33 +299,29 @@ int
 inode_set_unnamed_stream(struct wim_inode *inode, const void *data, size_t len,
 			 struct wim_lookup_table *lookup_table)
 {
+	wimlib_assert(inode->i_resolved);
 	inode->i_lte = new_stream_from_data_buffer(data, len, lookup_table);
 	if (inode->i_lte == NULL)
 		return WIMLIB_ERR_NOMEM;
-	inode->i_resolved = 1;
 	return 0;
 }
 
 /* Remove an alternate data stream from a WIM inode  */
 void
-inode_remove_ads(struct wim_inode *inode, u16 idx,
+inode_remove_ads(struct wim_inode *inode, struct wim_ads_entry *entry,
 		 struct wim_lookup_table *lookup_table)
 {
-	struct wim_ads_entry *ads_entry;
 	struct wim_lookup_table_entry *lte;
+	unsigned idx = entry - inode->i_ads_entries;
 
 	wimlib_assert(idx < inode->i_num_ads);
 	wimlib_assert(inode->i_resolved);
 
-	ads_entry = &inode->i_ads_entries[idx];
-
-	DEBUG("Remove alternate data stream \"%"WS"\"", ads_entry->stream_name);
-
-	lte = ads_entry->lte;
+	lte = entry->lte;
 	if (lte)
 		lte_decrement_refcnt(lte, lookup_table);
 
-	destroy_ads_entry(ads_entry);
+	destroy_ads_entry(entry);
 
 	memmove(&inode->i_ads_entries[idx],
 		&inode->i_ads_entries[idx + 1],
@@ -341,87 +329,6 @@ inode_remove_ads(struct wim_inode *inode, u16 idx,
 	inode->i_num_ads--;
 }
 
-bool
-inode_has_unix_data(const struct wim_inode *inode)
-{
-	for (u16 i = 0; i < inode->i_num_ads; i++)
-		if (ads_entry_is_unix_data(&inode->i_ads_entries[i]))
-			return true;
-	return false;
-}
-
-#ifndef __WIN32__
-int
-inode_get_unix_data(const struct wim_inode *inode,
-		    struct wimlib_unix_data *unix_data,
-		    u16 *stream_idx_ret)
-{
-	const struct wim_ads_entry *ads_entry;
-	const struct wim_lookup_table_entry *lte;
-	size_t size;
-	int ret;
-
-	wimlib_assert(inode->i_resolved);
-
-	ads_entry = inode_get_ads_entry((struct wim_inode*)inode,
-					WIMLIB_UNIX_DATA_TAG, NULL);
-	if (ads_entry == NULL)
-		return NO_UNIX_DATA;
-
-	if (stream_idx_ret)
-		*stream_idx_ret = ads_entry - inode->i_ads_entries;
-
-	lte = ads_entry->lte;
-	if (lte == NULL)
-		return NO_UNIX_DATA;
-
-	size = lte->size;
-	if (size != sizeof(struct wimlib_unix_data))
-		return BAD_UNIX_DATA;
-
-	ret = read_full_stream_into_buf(lte, unix_data);
-	if (ret)
-		return ret;
-
-	if (unix_data->version != 0)
-		return BAD_UNIX_DATA;
-	return 0;
-}
-
-int
-inode_set_unix_data(struct wim_inode *inode, u16 uid, u16 gid, u16 mode,
-		    struct wim_lookup_table *lookup_table, int which)
-{
-	struct wimlib_unix_data unix_data;
-	int ret;
-	bool have_good_unix_data = false;
-	bool have_unix_data = false;
-	u16 stream_idx;
-
-	if (!(which & UNIX_DATA_CREATE)) {
-		ret = inode_get_unix_data(inode, &unix_data, &stream_idx);
-		if (ret == 0 || ret == BAD_UNIX_DATA || ret > 0)
-			have_unix_data = true;
-		if (ret == 0)
-			have_good_unix_data = true;
-	}
-	unix_data.version = 0;
-	if (which & UNIX_DATA_UID || !have_good_unix_data)
-		unix_data.uid = uid;
-	if (which & UNIX_DATA_GID || !have_good_unix_data)
-		unix_data.gid = gid;
-	if (which & UNIX_DATA_MODE || !have_good_unix_data)
-		unix_data.mode = mode;
-	ret = inode_add_ads_with_data(inode, WIMLIB_UNIX_DATA_TAG,
-				      &unix_data,
-				      sizeof(struct wimlib_unix_data),
-				      lookup_table);
-	if (ret == 0 && have_unix_data)
-		inode_remove_ads(inode, stream_idx, lookup_table);
-	return ret;
-}
-#endif /* __WIN32__  */
-
 /*
  * Resolve an inode's lookup table entries.
  *
@@ -657,8 +564,9 @@ stream_not_found_error(const struct wim_inode *inode, const u8 *hash)
  *	Inode to load the alternate data streams into.  @inode->i_num_ads must
  *	have been set to the number of alternate data streams that are expected.
  *
- * @remaining_size:
+ * @nbytes_remaining_p:
  *	Number of bytes of data remaining in the buffer pointed to by @p.
+ *	On success this will be updated to point just past the ADS entries.
  *
  * On success, inode->i_ads_entries is set to an array of `struct
  * wim_ads_entry's of length inode->i_num_ads.  On failure, @inode is not
@@ -671,8 +579,9 @@ stream_not_found_error(const struct wim_inode *inode, const u8 *hash)
  */
 int
 read_ads_entries(const u8 * restrict p, struct wim_inode * restrict inode,
-		 size_t nbytes_remaining)
+		 size_t *nbytes_remaining_p)
 {
+	size_t nbytes_remaining = *nbytes_remaining_p;
 	u16 num_ads;
 	struct wim_ads_entry *ads_entries;
 	int ret;
@@ -737,14 +646,10 @@ read_ads_entries(const u8 * restrict p, struct wim_inode * restrict inode,
 			    cur_entry->stream_name_nbytes > length)
 				goto out_invalid;
 
-			cur_entry->stream_name = MALLOC(cur_entry->stream_name_nbytes + 2);
+			cur_entry->stream_name = utf16le_dupz(disk_entry->stream_name,
+							      cur_entry->stream_name_nbytes);
 			if (cur_entry->stream_name == NULL)
 				goto out_of_memory;
-
-			memcpy(cur_entry->stream_name,
-			       disk_entry->stream_name,
-			       cur_entry->stream_name_nbytes);
-			cur_entry->stream_name[cur_entry->stream_name_nbytes / 2] = cpu_to_le16(0);
 		} else {
 			/* Mark inode as having weird stream entries.  */
 			inode->i_canonical_streams = 0;
@@ -758,7 +663,7 @@ read_ads_entries(const u8 * restrict p, struct wim_inode * restrict inode,
 		 * that less than @length is actually remaining in the metadata
 		 * resource. We should set the remaining bytes to 0 if this
 		 * happens. */
-		length = (length + 7) & ~(u64)7;
+		length = (length + 7) & ~7;
 		p += length;
 		if (nbytes_remaining < length)
 			nbytes_remaining = 0;
@@ -767,6 +672,7 @@ read_ads_entries(const u8 * restrict p, struct wim_inode * restrict inode,
 	}
 	inode->i_ads_entries = ads_entries;
 	inode->i_next_stream_id = inode->i_num_ads + 1;
+	*nbytes_remaining_p = nbytes_remaining;
 	ret = 0;
 	goto out;
 out_of_memory:
@@ -798,8 +704,6 @@ out:
 int
 verify_inode(struct wim_inode *inode, const struct wim_security_data *sd)
 {
-	struct wim_dentry *dentry;
-
 	/* Check the security ID.  -1 is valid and means "no security
 	 * descriptor".  Anything else has to be a valid index into the WIM
 	 * image's security descriptors table. */
@@ -839,6 +743,20 @@ inode_ref_streams(struct wim_inode *inode)
 	}
 }
 
+void
+inode_unref_streams(struct wim_inode *inode,
+		    struct wim_lookup_table *lookup_table)
+{
+	struct wim_lookup_table_entry *lte;
+	unsigned i;
+
+	for (i = 0; i <= inode->i_num_ads; i++) {
+		lte = inode_stream_lte(inode, i, lookup_table);
+		if (lte)
+			lte_decrement_refcnt(lte, lookup_table);
+	}
+}
+
 int
 init_inode_table(struct wim_inode_table *table, size_t capacity)
 {