]> wimlib.net Git - wimlib/blobdiff - src/verify.c
Detect directory hard links as early as possible
[wimlib] / src / verify.c
index 6da6b6a920b7bff59239d201e9311b1fb457b7cb..3085e6a67120661a8a9a1cea07454dea5aecd1f9 100644 (file)
@@ -8,8 +8,6 @@
 /*
  * Copyright (C) 2012, 2013 Eric Biggers
  *
- * wimlib - Library for working with WIM files
- *
  * This file is part of wimlib, a library for working with WIM files.
  *
  * wimlib is free software; you can redistribute it and/or modify it under the
  * along with wimlib; if not, see http://www.gnu.org/licenses/.
  */
 
-#include "wimlib_internal.h"
-#include "dentry.h"
-#include "lookup_table.h"
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "wimlib/dentry.h"
+#include "wimlib/error.h"
+#include "wimlib/lookup_table.h"
+#include "wimlib/metadata.h"
+#include "wimlib/security.h"
 
 static int
 verify_inode(struct wim_inode *inode, const WIMStruct *w)
@@ -37,23 +41,17 @@ verify_inode(struct wim_inode *inode, const WIMStruct *w)
        const struct wim_security_data *sd = wim_const_security_data(w);
        struct wim_dentry *first_dentry = inode_first_dentry(inode);
        struct wim_dentry *dentry;
-       int ret = WIMLIB_ERR_INVALID_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. */
-       if (inode->i_security_id < -1) {
-               ERROR("Dentry `%"TS"' has an invalid security ID (%d)",
-                     dentry_full_path(first_dentry), inode->i_security_id);
-               goto out;
-       }
-
-       if (inode->i_security_id >= sd->num_entries) {
-               ERROR("Dentry `%"TS"' has an invalid security ID (%d) "
-                     "(there are only %u entries in the security table)",
-                     dentry_full_path(first_dentry), inode->i_security_id,
-                     sd->num_entries);
-               goto out;
+       if (inode->i_security_id < -1 ||
+           (inode->i_security_id >= 0 &&
+            inode->i_security_id >= sd->num_entries))
+       {
+               WARNING("\"%"TS"\" has an invalid security ID (%d)",
+                       dentry_full_path(first_dentry), inode->i_security_id);
+               inode->i_security_id = -1;
        }
 
        /* Check that lookup table entries for all the inode's stream exist,
@@ -61,17 +59,17 @@ verify_inode(struct wim_inode *inode, const WIMStruct *w)
         * empty stream.
         *
         * This check is skipped on split WIMs. */
-       if (w->hdr.total_parts == 1) {
+       if (w->hdr.total_parts == 1 && !inode->i_resolved) {
                for (unsigned i = 0; i <= inode->i_num_ads; i++) {
                        struct wim_lookup_table_entry *lte;
                        const u8 *hash;
-                       hash = inode_stream_hash_unresolved(inode, i);
+                       hash = inode_stream_hash(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 `%"TS"'",
                                      i, dentry_full_path(first_dentry));
-                               goto out;
+                               return WIMLIB_ERR_INVALID_DENTRY;
                        }
                        if (lte)
                                lte->real_refcnt += inode->i_nlink;
@@ -82,14 +80,13 @@ verify_inode(struct wim_inode *inode, const WIMStruct *w)
        unsigned num_unnamed_streams = 0;
        for (unsigned i = 0; i <= inode->i_num_ads; i++) {
                const u8 *hash;
-               hash = inode_stream_hash_unresolved(inode, i);
+               hash = inode_stream_hash(inode, i);
                if (inode_stream_name_nbytes(inode, i) == 0 && !is_zero_hash(hash))
                        num_unnamed_streams++;
        }
        if (num_unnamed_streams > 1) {
-               ERROR("Dentry `%"TS"' has multiple (%u) un-named streams",
-                     dentry_full_path(first_dentry), num_unnamed_streams);
-               goto out;
+               WARNING("\"%"TS"\" has multiple (%u) un-named streams",
+                       dentry_full_path(first_dentry), num_unnamed_streams);
        }
 
        /* Files cannot have multiple DOS names, even if they have multiple
@@ -99,27 +96,26 @@ verify_inode(struct wim_inode *inode, const WIMStruct *w)
        inode_for_each_dentry(dentry, inode) {
                if (dentry_has_short_name(dentry)) {
                        if (dentry_with_dos_name) {
+                               /* This was previously an error, but if we
+                                * capture a WIM from UDF on Windows, hard links
+                                * are supported but DOS names are automatically
+                                * generated for all names for an inode.  */
+                       #if 0
                                ERROR("Hard-linked file has a DOS name at "
                                      "both `%"TS"' and `%"TS"'",
                                      dentry_full_path(dentry_with_dos_name),
                                      dentry_full_path(dentry));
-                               goto out;
+                               return WIMLIB_ERR_INVALID_DENTRY;
+                       #else
+                               dentry->dos_name_invalid = 1;
+                       #endif
                        }
                        dentry_with_dos_name = dentry;
                }
        }
 
-       /* Directories with multiple links have not been tested. XXX */
-       if (inode->i_nlink > 1 && inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
-               ERROR("Hard-linked directory `%"TS"' is unsupported",
-                     dentry_full_path(first_dentry));
-               goto out;
-       }
-
        inode->i_verified = 1;
-       ret = 0;
-out:
-       return ret;
+       return 0;
 }
 
 /* Run some miscellaneous verifications on a WIM dentry */
@@ -134,7 +130,7 @@ verify_dentry(struct wim_dentry *dentry, void *wim)
         * in which case we need to force the inode to be verified again.) */
        if (!dentry->d_inode->i_verified) {
                ret = verify_inode(dentry->d_inode, w);
-               if (ret != 0)
+               if (ret)
                        return ret;
        }
 
@@ -232,111 +228,3 @@ wim_run_full_verifications(WIMStruct *w)
        }
        return ret;
 }
-
-/*
- * verify_swm_set: - Sanity checks to make sure a set of WIMs correctly
- *                  correspond to a spanned set.
- *
- * @w:
- *     Part 1 of the set.
- *
- * @additional_swms:
- *     All parts of the set other than part 1.
- *
- * @num_additional_swms:
- *     Number of WIMStructs in @additional_swms.  Or, the total number of parts
- *     in the set minus 1.
- *
- * @return:
- *     0 on success; WIMLIB_ERR_SPLIT_INVALID if the set is not valid.
- */
-int
-verify_swm_set(WIMStruct *w, WIMStruct **additional_swms,
-              unsigned num_additional_swms)
-{
-       unsigned total_parts = w->hdr.total_parts;
-       int ctype;
-       const u8 *guid;
-
-       if (total_parts != num_additional_swms + 1) {
-               ERROR("`%"TS"' says there are %u parts in the spanned set, "
-                     "but %"TS"%u part%"TS" provided",
-                     w->filename, total_parts,
-                     (num_additional_swms + 1 < total_parts) ? T("only ") : T(""),
-                     num_additional_swms + 1,
-                     (num_additional_swms) ? T("s were") : T(" was"));
-               return WIMLIB_ERR_SPLIT_INVALID;
-       }
-       if (w->hdr.part_number != 1) {
-               ERROR("WIM `%"TS"' is not the first part of the split WIM.",
-                     w->filename);
-               return WIMLIB_ERR_SPLIT_INVALID;
-       }
-       for (unsigned i = 0; i < num_additional_swms; i++) {
-               if (additional_swms[i]->hdr.total_parts != total_parts) {
-                       ERROR("WIM `%"TS"' says there are %u parts in the "
-                             "spanned set, but %u parts were provided",
-                             additional_swms[i]->filename,
-                             additional_swms[i]->hdr.total_parts,
-                             total_parts);
-                       return WIMLIB_ERR_SPLIT_INVALID;
-               }
-       }
-
-       /* keep track of ctype and guid just to make sure they are the same for
-        * all the WIMs. */
-       ctype = wimlib_get_compression_type(w);
-       guid = w->hdr.guid;
-
-       {
-               /* parts_to_swms is not allocated at function scope because it
-                * should only be allocated after num_additional_swms was
-                * checked to be the same as w->hdr.total_parts.  Otherwise, it
-                * could be unexpectedly high and cause a stack overflow. */
-               WIMStruct *parts_to_swms[num_additional_swms];
-               ZERO_ARRAY(parts_to_swms);
-               for (unsigned i = 0; i < num_additional_swms; i++) {
-
-                       WIMStruct *swm = additional_swms[i];
-
-                       if (wimlib_get_compression_type(swm) != ctype) {
-                               ERROR("The split WIMs do not all have the same "
-                                     "compression type");
-                               return WIMLIB_ERR_SPLIT_INVALID;
-                       }
-                       if (memcmp(guid, swm->hdr.guid, WIM_GID_LEN) != 0) {
-                               ERROR("The split WIMs do not all have the same "
-                                     "GUID");
-                               return WIMLIB_ERR_SPLIT_INVALID;
-                       }
-                       if (swm->hdr.part_number == 1) {
-                               ERROR("WIMs `%"TS"' and `%"TS"' both are marked "
-                                     "as the first WIM in the spanned set",
-                                     w->filename, swm->filename);
-                               return WIMLIB_ERR_SPLIT_INVALID;
-                       }
-                       if (swm->hdr.part_number == 0 ||
-                           swm->hdr.part_number > total_parts)
-                       {
-                               ERROR("WIM `%"TS"' says it is part %u in the "
-                                     "spanned set, but the part number must "
-                                     "be in the range [1, %u]",
-                                     swm->filename, swm->hdr.part_number, total_parts);
-                               return WIMLIB_ERR_SPLIT_INVALID;
-                       }
-                       if (parts_to_swms[swm->hdr.part_number - 2])
-                       {
-                               ERROR("`%"TS"' and `%"TS"' are both marked as "
-                                     "part %u of %u in the spanned set",
-                                     parts_to_swms[swm->hdr.part_number - 2]->filename,
-                                     swm->filename,
-                                     swm->hdr.part_number,
-                                     total_parts);
-                               return WIMLIB_ERR_SPLIT_INVALID;
-                       } else {
-                               parts_to_swms[swm->hdr.part_number - 2] = swm;
-                       }
-               }
-       }
-       return 0;
-}