Set FILE_ATTRIBUTE_DIRECTORY for directory symlinks
authorEric Biggers <ebiggers3@gmail.com>
Sun, 18 Nov 2012 23:13:27 +0000 (17:13 -0600)
committerEric Biggers <ebiggers3@gmail.com>
Sun, 18 Nov 2012 23:13:27 +0000 (17:13 -0600)
src/dentry.c
src/dentry.h
src/modify.c

index f4b8bb582e43c0dd0c4dbb3dc7b4f8d86905d6b0..d135f578edecff5dced1bafa554610e9a511bb79 100644 (file)
@@ -175,28 +175,6 @@ static u64 dentry_total_length(const struct dentry *dentry)
        return __dentry_total_length(dentry, dentry->length);
 }
 
-/* Transfers file attributes from a `stat' buffer to a WIM "inode". */
-void stbuf_to_inode(const struct stat *stbuf, struct inode *inode)
-{
-       if (S_ISLNK(stbuf->st_mode)) {
-               inode->attributes = FILE_ATTRIBUTE_REPARSE_POINT;
-               inode->reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK;
-       } else if (S_ISDIR(stbuf->st_mode)) {
-               inode->attributes = FILE_ATTRIBUTE_DIRECTORY;
-       } else {
-               inode->attributes = FILE_ATTRIBUTE_NORMAL;
-       }
-       if (sizeof(ino_t) >= 8)
-               inode->ino = (u64)stbuf->st_ino;
-       else
-               inode->ino = (u64)stbuf->st_ino |
-                                  ((u64)stbuf->st_dev << ((sizeof(ino_t) * 8) & 63));
-       /* Set timestamps */
-       inode->creation_time = timespec_to_wim_timestamp(&stbuf->st_mtim);
-       inode->last_write_time = timespec_to_wim_timestamp(&stbuf->st_mtim);
-       inode->last_access_time = timespec_to_wim_timestamp(&stbuf->st_atim);
-}
-
 #ifdef WITH_FUSE
 /* Transfers file attributes from a struct inode to a `stat' buffer.
  *
index d30cb15985632af4746431375f6f79e0a9a69516..68f118d8a2bdc3cc14e0d44840a53a0084a315c6 100644 (file)
@@ -330,7 +330,6 @@ static inline bool dentry_is_first_in_inode(const struct dentry *dentry)
 
 extern u64 dentry_correct_total_length(const struct dentry *dentry);
 
-extern void stbuf_to_inode(const struct stat *stbuf, struct inode *inode);
 extern int inode_to_stbuf(const struct inode *inode,
                          struct lookup_table_entry *lte, struct stat *stbuf);
 
index 4d3b6d41087069ac769d25d278394567da14a450..0d096703d3b610bd7a538ae1058a1766a9fc47d0 100644 (file)
@@ -32,6 +32,7 @@
 #include "dentry.h"
 #include "xml.h"
 #include "lookup_table.h"
+#include "timestamp.h"
 #include <sys/stat.h>
 #include <dirent.h>
 #include <string.h>
@@ -100,6 +101,7 @@ static int build_dentry_tree(struct dentry **root_ret,
        int (*stat_fn)(const char *restrict, struct stat *restrict);
        struct dentry *root;
        const char *filename;
+       struct inode *inode;
 
        if (exclude_path(root_disk_path, config, true)) {
                if (add_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) {
@@ -149,11 +151,70 @@ static int build_dentry_tree(struct dentry **root_ret,
        if (!root)
                return WIMLIB_ERR_NOMEM;
 
-       stbuf_to_inode(&root_stbuf, root->d_inode);
+       inode = root->d_inode;
+
+       inode->creation_time = timespec_to_wim_timestamp(&root_stbuf.st_mtim);
+       inode->last_write_time = timespec_to_wim_timestamp(&root_stbuf.st_mtim);
+       inode->last_access_time = timespec_to_wim_timestamp(&root_stbuf.st_atim);
+       if (sizeof(ino_t) >= 8)
+               inode->ino = (u64)root_stbuf.st_ino;
+       else
+               inode->ino = (u64)root_stbuf.st_ino |
+                                  ((u64)root_stbuf.st_dev << ((sizeof(ino_t) * 8) & 63));
+
        add_flags &= ~WIMLIB_ADD_IMAGE_FLAG_ROOT;
-       root->d_inode->resolved = true;
+       inode->resolved = true;
+
+       if (S_ISREG(root_stbuf.st_mode)) { /* Archiving a regular file */
+
+               struct lookup_table_entry *lte;
+               u8 hash[SHA1_HASH_SIZE];
+
+               inode->attributes = FILE_ATTRIBUTE_NORMAL;
+
+               /* Empty files do not have to have a lookup table entry. */
+               if (root_stbuf.st_size == 0)
+                       goto out;
+
+               /* For each regular file, we must check to see if the file is in
+                * the lookup table already; if it is, we increment its refcnt;
+                * otherwise, we create a new lookup table entry and insert it.
+                * */
+
+               ret = sha1sum(root_disk_path, hash);
+               if (ret != 0)
+                       goto out;
+
+               lte = __lookup_resource(lookup_table, hash);
+               if (lte) {
+                       lte->refcnt++;
+                       DEBUG("Add lte reference %u for `%s'", lte->refcnt,
+                             root_disk_path);
+               } else {
+                       char *file_on_disk = STRDUP(root_disk_path);
+                       if (!file_on_disk) {
+                               ERROR("Failed to allocate memory for file path");
+                               ret = WIMLIB_ERR_NOMEM;
+                               goto out;
+                       }
+                       lte = new_lookup_table_entry();
+                       if (!lte) {
+                               FREE(file_on_disk);
+                               ret = WIMLIB_ERR_NOMEM;
+                               goto out;
+                       }
+                       lte->file_on_disk = file_on_disk;
+                       lte->resource_location = RESOURCE_IN_FILE_ON_DISK;
+                       lte->resource_entry.original_size = root_stbuf.st_size;
+                       lte->resource_entry.size = root_stbuf.st_size;
+                       copy_hash(lte->hash, hash);
+                       lookup_table_insert(lookup_table, lte);
+               }
+               root->d_inode->lte = lte;
+       } else if (S_ISDIR(root_stbuf.st_mode)) { /* Archiving a directory */
+
+               inode->attributes = FILE_ATTRIBUTE_DIRECTORY;
 
-       if (dentry_is_directory(root)) { /* Archiving a directory */
                DIR *dir;
                struct dirent *p;
                struct dentry *child;
@@ -199,7 +260,17 @@ static int build_dentry_tree(struct dentry **root_ret,
                                dentry_add_child(root, child);
                }
                closedir(dir);
-       } else if (dentry_is_symlink(root)) { /* Archiving a symbolic link */
+       } else { /* Archiving a symbolic link */
+               inode->attributes = FILE_ATTRIBUTE_REPARSE_POINT;
+               inode->reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK;
+
+               /* The idea here is to call readlink() to get the UNIX target of
+                * the symbolic link, then turn the target into a reparse point
+                * data buffer that contains a relative or absolute symbolic
+                * link (NOT a junction point or *full* path symbolic link with
+                * drive letter).
+                */
+
                char deref_name_buf[4096];
                ssize_t deref_name_len;
 
@@ -210,55 +281,27 @@ static int build_dentry_tree(struct dentry **root_ret,
                        DEBUG("Read symlink `%s'", deref_name_buf);
                        ret = inode_set_symlink(root->d_inode, deref_name_buf,
                                                lookup_table, NULL);
+                       if (ret == 0) {
+                               /*
+                                * Unfortunately, Windows seems to have the
+                                * concept of "file" symbolic links as being
+                                * different from "directory" symbolic links...
+                                * so FILE_ATTRIBUTE_DIRECTORY needs to be set
+                                * on the symbolic link if the *target* of the
+                                * symbolic link is a directory.
+                                */
+                               struct stat stbuf;
+                               if (stat(root_disk_path, &stbuf) == 0 &&
+                                   S_ISDIR(stbuf.st_mode))
+                               {
+                                       inode->attributes |= FILE_ATTRIBUTE_DIRECTORY;
+                               }
+                       }
                } else {
                        ERROR_WITH_ERRNO("Failed to read target of "
                                         "symbolic link `%s'", root_disk_path);
                        ret = WIMLIB_ERR_READLINK;
                }
-       } else { /* Archiving a regular file */
-
-               struct lookup_table_entry *lte;
-               u8 hash[SHA1_HASH_SIZE];
-
-               /* Empty files do not have to have a lookup table entry. */
-               if (root_stbuf.st_size == 0)
-                       goto out;
-
-               /* For each regular file, we must check to see if the file is in
-                * the lookup table already; if it is, we increment its refcnt;
-                * otherwise, we create a new lookup table entry and insert it.
-                * */
-
-               ret = sha1sum(root_disk_path, hash);
-               if (ret != 0)
-                       goto out;
-
-               lte = __lookup_resource(lookup_table, hash);
-               if (lte) {
-                       lte->refcnt++;
-                       DEBUG("Add lte reference %u for `%s'", lte->refcnt,
-                             root_disk_path);
-               } else {
-                       char *file_on_disk = STRDUP(root_disk_path);
-                       if (!file_on_disk) {
-                               ERROR("Failed to allocate memory for file path");
-                               ret = WIMLIB_ERR_NOMEM;
-                               goto out;
-                       }
-                       lte = new_lookup_table_entry();
-                       if (!lte) {
-                               FREE(file_on_disk);
-                               ret = WIMLIB_ERR_NOMEM;
-                               goto out;
-                       }
-                       lte->file_on_disk = file_on_disk;
-                       lte->resource_location = RESOURCE_IN_FILE_ON_DISK;
-                       lte->resource_entry.original_size = root_stbuf.st_size;
-                       lte->resource_entry.size = root_stbuf.st_size;
-                       copy_hash(lte->hash, hash);
-                       lookup_table_insert(lookup_table, lte);
-               }
-               root->d_inode->lte = lte;
        }
 out:
        if (ret == 0)