]> wimlib.net Git - wimlib/blobdiff - src/dentry.c
mount_image.c: Implement versioned unmount messages
[wimlib] / src / dentry.c
index 5ea26d3ecbb9c7285770f1269e1be52996b493b3..daab2fea4bd16a3f96cc851897a0e6f3d6659976 100644 (file)
  * wimlib; if not, see http://www.gnu.org/licenses/.
  */
 
-#include <errno.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <unistd.h>
-
+#include "buffer_io.h"
 #include "dentry.h"
-#include "io.h"
 #include "lookup_table.h"
-#include "sha1.h"
 #include "timestamp.h"
 #include "wimlib_internal.h"
 
-
 /* Calculates the unaligned length, in bytes, of an on-disk WIM dentry that has
  * a file name and short name that take the specified numbers of bytes.  This
  * excludes any alternate data stream entries that may follow the dentry. */
@@ -175,52 +168,6 @@ static u64 dentry_total_length(const struct dentry *dentry)
        return __dentry_total_length(dentry, dentry->length);
 }
 
-#ifdef WITH_FUSE
-/* Transfers file attributes from a struct inode to a `stat' buffer.
- *
- * The lookup table entry tells us which stream in the inode we are statting.
- * For a named data stream, everything returned is the same as the unnamed data
- * stream except possibly the size and block count. */
-int inode_to_stbuf(const struct inode *inode, struct lookup_table_entry *lte,
-                  struct stat *stbuf)
-{
-       if (inode_is_symlink(inode))
-               stbuf->st_mode = S_IFLNK | 0777;
-       else if (inode_is_directory(inode))
-               stbuf->st_mode = S_IFDIR | 0755;
-       else
-               stbuf->st_mode = S_IFREG | 0755;
-
-       stbuf->st_ino   = (ino_t)inode->ino;
-       stbuf->st_nlink = inode->link_count;
-       stbuf->st_uid   = getuid();
-       stbuf->st_gid   = getgid();
-
-       if (lte) {
-               if (lte->resource_location == RESOURCE_IN_STAGING_FILE) {
-                       wimlib_assert(lte->staging_file_name);
-                       struct stat native_stat;
-                       if (stat(lte->staging_file_name, &native_stat) != 0) {
-                               DEBUG("Failed to stat `%s': %m",
-                                     lte->staging_file_name);
-                               return -errno;
-                       }
-                       stbuf->st_size = native_stat.st_size;
-               } else {
-                       stbuf->st_size = wim_resource_size(lte);
-               }
-       } else {
-               stbuf->st_size = 0;
-       }
-
-       stbuf->st_atime   = wim_timestamp_to_unix(inode->last_access_time);
-       stbuf->st_mtime   = wim_timestamp_to_unix(inode->last_write_time);
-       stbuf->st_ctime   = wim_timestamp_to_unix(inode->creation_time);
-       stbuf->st_blocks  = (stbuf->st_size + 511) / 512;
-       return 0;
-}
-#endif
-
 int for_dentry_in_rbtree(struct rb_node *root,
                         int (*visitor)(struct dentry *, void *),
                         void *arg)
@@ -756,49 +703,37 @@ int print_dentry(struct dentry *dentry, void *lookup_table)
        const u8 *hash;
        struct lookup_table_entry *lte;
        const struct inode *inode = dentry->d_inode;
-       time_t time;
-       char *p;
+       char buf[50];
 
        printf("[DENTRY]\n");
        printf("Length            = %"PRIu64"\n", dentry->length);
        printf("Attributes        = 0x%x\n", inode->attributes);
-       for (unsigned i = 0; i < ARRAY_LEN(file_attr_flags); i++)
+       for (size_t i = 0; i < ARRAY_LEN(file_attr_flags); i++)
                if (file_attr_flags[i].flag & inode->attributes)
                        printf("    FILE_ATTRIBUTE_%s is set\n",
                                file_attr_flags[i].name);
        printf("Security ID       = %d\n", inode->security_id);
        printf("Subdir offset     = %"PRIu64"\n", dentry->subdir_offset);
 
-       /* Translate the timestamps into something readable */
-       time = wim_timestamp_to_unix(inode->creation_time);
-       p = asctime(gmtime(&time));
-       *(strrchr(p, '\n')) = '\0';
-       printf("Creation Time     = %s UTC\n", p);
+       wim_timestamp_to_str(inode->creation_time, buf, sizeof(buf));
+       printf("Creation Time     = %s\n", buf);
 
-       time = wim_timestamp_to_unix(inode->last_access_time);
-       p = asctime(gmtime(&time));
-       *(strrchr(p, '\n')) = '\0';
-       printf("Last Access Time  = %s UTC\n", p);
+       wim_timestamp_to_str(inode->last_access_time, buf, sizeof(buf));
+       printf("Last Access Time  = %s\n", buf);
 
-       time = wim_timestamp_to_unix(inode->last_write_time);
-       p = asctime(gmtime(&time));
-       *(strrchr(p, '\n')) = '\0';
-       printf("Last Write Time   = %s UTC\n", p);
+       wim_timestamp_to_str(inode->last_write_time, buf, sizeof(buf));
+       printf("Last Write Time   = %s\n", buf);
 
        printf("Reparse Tag       = 0x%"PRIx32"\n", inode->reparse_tag);
        printf("Hard Link Group   = 0x%"PRIx64"\n", inode->ino);
        printf("Hard Link Group Size = %"PRIu32"\n", inode->link_count);
        printf("Number of Alternate Data Streams = %hu\n", inode->num_ads);
-       printf("Filename          = \"");
-       print_string(dentry->file_name, dentry->file_name_len);
-       puts("\"");
-       printf("Filename Length   = %hu\n", dentry->file_name_len);
        printf("Filename (UTF-8)  = \"%s\"\n", dentry->file_name_utf8);
-       printf("Filename (UTF-8) Length = %hu\n", dentry->file_name_utf8_len);
-       printf("Short Name        = \"");
+       /*printf("Filename (UTF-8) Length = %hu\n", dentry->file_name_utf8_len);*/
+       printf("Short Name (UTF-16LE) = \"");
        print_string(dentry->short_name, dentry->short_name_len);
        puts("\"");
-       printf("Short Name Length = %hu\n", dentry->short_name_len);
+       /*printf("Short Name Length = %hu\n", dentry->short_name_len);*/
        printf("Full Path (UTF-8) = \"%s\"\n", dentry->full_path_utf8);
        lte = inode_stream_lte(dentry->d_inode, 0, lookup_table);
        if (lte) {
@@ -965,8 +900,7 @@ void free_inode(struct inode *inode)
  * */
 static void put_inode(struct inode *inode)
 {
-       wimlib_assert(inode);
-       wimlib_assert(inode->link_count);
+       wimlib_assert(inode->link_count != 0);
        if (--inode->link_count == 0) {
        #ifdef WITH_FUSE
                if (inode->num_opened_fds == 0)
@@ -983,7 +917,6 @@ static void put_inode(struct inode *inode)
  */
 void free_dentry(struct dentry *dentry)
 {
-       wimlib_assert(dentry != NULL);
        FREE(dentry->file_name);
        FREE(dentry->file_name_utf8);
        FREE(dentry->short_name);
@@ -995,9 +928,7 @@ void free_dentry(struct dentry *dentry)
 
 void put_dentry(struct dentry *dentry)
 {
-       wimlib_assert(dentry != NULL);
        wimlib_assert(dentry->refcnt != 0);
-
        if (--dentry->refcnt == 0)
                free_dentry(dentry);
 }
@@ -1014,7 +945,7 @@ static int do_free_dentry(struct dentry *dentry, void *__lookup_table)
        if (lookup_table) {
                struct lookup_table_entry *lte;
                struct inode *inode = dentry->d_inode;
-               wimlib_assert(inode->link_count);
+               wimlib_assert(inode->link_count != 0);
                for (i = 0; i <= inode->num_ads; i++) {
                        lte = inode_stream_lte(inode, i, lookup_table);
                        if (lte)
@@ -1096,141 +1027,6 @@ void unlink_dentry(struct dentry *dentry)
 }
 #endif
 
-static inline struct dentry *inode_first_dentry(struct inode *inode)
-{
-       wimlib_assert(inode->dentry_list.next != &inode->dentry_list);
-       return container_of(inode->dentry_list.next, struct dentry,
-                           inode_dentry_list);
-}
-
-static int verify_inode(struct inode *inode, const WIMStruct *w)
-{
-       const struct lookup_table *table = w->lookup_table;
-       const struct wim_security_data *sd = wim_const_security_data(w);
-       const struct dentry *first_dentry = inode_first_dentry(inode);
-       int ret = WIMLIB_ERR_INVALID_DENTRY;
-
-       /* Check the security ID */
-       if (inode->security_id < -1) {
-               ERROR("Dentry `%s' has an invalid security ID (%d)",
-                       first_dentry->full_path_utf8, inode->security_id);
-               goto out;
-       }
-       if (inode->security_id >= sd->num_entries) {
-               ERROR("Dentry `%s' has an invalid security ID (%d) "
-                     "(there are only %u entries in the security table)",
-                       first_dentry->full_path_utf8, inode->security_id,
-                       sd->num_entries);
-               goto out;
-       }
-
-       /* Check that lookup table entries for all the resources exist, except
-        * if the SHA1 message digest is all 0's, which indicates there is
-        * intentionally no resource there.  */
-       if (w->hdr.total_parts == 1) {
-               for (unsigned i = 0; i <= inode->num_ads; i++) {
-                       struct lookup_table_entry *lte;
-                       const u8 *hash;
-                       hash = inode_stream_hash_unresolved(inode, i);
-                       lte = __lookup_resource(table, hash);
-                       if (!lte && !is_zero_hash(hash)) {
-                               ERROR("Could not find lookup table entry for stream "
-                                     "%u of dentry `%s'", i, first_dentry->full_path_utf8);
-                               goto out;
-                       }
-                       if (lte && (lte->real_refcnt += inode->link_count) > lte->refcnt)
-                       {
-                       #ifdef ENABLE_ERROR_MESSAGES
-                               WARNING("The following lookup table entry "
-                                       "has a reference count of %u, but",
-                                       lte->refcnt);
-                               WARNING("We found %u references to it",
-                                       lte->real_refcnt);
-                               WARNING("(One dentry referencing it is at `%s')",
-                                        first_dentry->full_path_utf8);
-
-                               print_lookup_table_entry(lte);
-                       #endif
-                               /* Guess what!  install.wim for Windows 8
-                                * contains a stream with 2 dentries referencing
-                                * it, but the lookup table entry has reference
-                                * count of 1.  So we will need to handle this
-                                * case and not just make it be an error...  I'm
-                                * just setting the reference count to the
-                                * number of references we found.
-                                * (Unfortunately, even after doing this, the
-                                * reference count could be too low if it's also
-                                * referenced in other WIM images) */
-
-                       #if 1
-                               lte->refcnt = lte->real_refcnt;
-                               WARNING("Fixing reference count");
-                       #else
-                               goto out;
-                       #endif
-                       }
-               }
-       }
-
-       /* Make sure there is only one un-named stream. */
-       unsigned num_unnamed_streams = 0;
-       for (unsigned i = 0; i <= inode->num_ads; i++) {
-               const u8 *hash;
-               hash = inode_stream_hash_unresolved(inode, i);
-               if (!inode_stream_name_len(inode, i) && !is_zero_hash(hash))
-                       num_unnamed_streams++;
-       }
-       if (num_unnamed_streams > 1) {
-               ERROR("Dentry `%s' has multiple (%u) un-named streams",
-                     first_dentry->full_path_utf8, num_unnamed_streams);
-               goto out;
-       }
-       inode->verified = true;
-       ret = 0;
-out:
-       return ret;
-}
-
-/* Run some miscellaneous verifications on a WIM dentry */
-int verify_dentry(struct dentry *dentry, void *wim)
-{
-       int ret;
-
-       if (!dentry->d_inode->verified) {
-               ret = verify_inode(dentry->d_inode, wim);
-               if (ret != 0)
-                       return ret;
-       }
-
-       /* Cannot have a short name but no long name */
-       if (dentry->short_name_len && !dentry->file_name_len) {
-               ERROR("Dentry `%s' has a short name but no long name",
-                     dentry->full_path_utf8);
-               return WIMLIB_ERR_INVALID_DENTRY;
-       }
-
-       /* Make sure root dentry is unnamed */
-       if (dentry_is_root(dentry)) {
-               if (dentry->file_name_len) {
-                       ERROR("The root dentry is named `%s', but it must "
-                             "be unnamed", dentry->file_name_utf8);
-                       return WIMLIB_ERR_INVALID_DENTRY;
-               }
-       }
-
-#if 0
-       /* Check timestamps */
-       if (inode->last_access_time < inode->creation_time ||
-           inode->last_write_time < inode->creation_time) {
-               WARNING("Dentry `%s' was created after it was last accessed or "
-                     "written to", dentry->full_path_utf8);
-       }
-#endif
-
-       return 0;
-}
-
-
 #ifdef WITH_FUSE
 /* Returns the alternate data stream entry belonging to @inode that has the
  * stream name @stream_name. */
@@ -1984,4 +1780,3 @@ u8 *write_dentry_tree(const struct dentry *root, u8 *p)
        /* Recursively write the rest of the dentry tree. */
        return write_dentry_tree_recursive(root, p);
 }
-