HFS: Convert to fshelp.
HFS doesn't handle "." and ".." properly. Convert it to fshelp to reuse the logic.
This commit is contained in:
Vladimir Serbinenko
parent
bfb5b33e96
commit
5fb1e859f7
1 changed files with 78 additions and 99 deletions
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@ -29,6 +29,7 @@
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#include <grub/types.h>
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#include <grub/hfs.h>
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#include <grub/i18n.h>
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#include <grub/fshelp.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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@ -1125,90 +1126,81 @@ utf8_to_macroman (grub_uint8_t *to, const char *from)
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return optr - to;
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}
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union grub_hfs_anyrec {
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struct grub_hfs_filerec frec;
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struct grub_hfs_dirrec dir;
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};
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struct grub_fshelp_node
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{
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struct grub_hfs_data *data;
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union grub_hfs_anyrec fdrec;
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grub_uint32_t inode;
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};
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static grub_err_t
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lookup_file (grub_fshelp_node_t dir,
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const char *name,
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grub_fshelp_node_t *foundnode,
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enum grub_fshelp_filetype *foundtype)
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{
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struct grub_hfs_catalog_key key;
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grub_ssize_t slen;
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union grub_hfs_anyrec fdrec;
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key.parent_dir = grub_cpu_to_be32 (dir->inode);
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slen = utf8_to_macroman (key.str, name);
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if (slen < 0)
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/* Not found */
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return GRUB_ERR_NONE;
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key.strlen = slen;
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/* Lookup this node. */
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if (! grub_hfs_find_node (dir->data, (char *) &key, dir->data->cat_root,
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0, (char *) &fdrec.frec, sizeof (fdrec.frec)))
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/* Not found */
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return GRUB_ERR_NONE;
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*foundnode = grub_malloc (sizeof (struct grub_fshelp_node));
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if (!*foundnode)
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return grub_errno;
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(*foundnode)->inode = grub_be_to_cpu32 (fdrec.dir.dirid);
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(*foundnode)->fdrec = fdrec;
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(*foundnode)->data = dir->data;
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*foundtype = (fdrec.frec.type == GRUB_HFS_FILETYPE_DIR) ? GRUB_FSHELP_DIR : GRUB_FSHELP_REG;
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return GRUB_ERR_NONE;
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}
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/* Find a file or directory with the pathname PATH in the filesystem
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DATA. Return the file record in RETDATA when it is non-zero.
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Return the directory number in RETINODE when it is non-zero. */
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static grub_err_t
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grub_hfs_find_dir (struct grub_hfs_data *data, const char *path,
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struct grub_hfs_filerec *retdata, int *retinode)
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grub_fshelp_node_t *found,
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enum grub_fshelp_filetype exptype)
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{
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int inode = data->rootdir;
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char *next;
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char *origpath;
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union {
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struct grub_hfs_filerec frec;
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struct grub_hfs_dirrec dir;
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} fdrec;
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fdrec.frec.type = GRUB_HFS_FILETYPE_DIR;
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if (path[0] != '/')
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{
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grub_error (GRUB_ERR_BAD_FILENAME, N_("invalid file name `%s'"), path);
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return 0;
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struct grub_fshelp_node root = {
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.data = data,
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.inode = data->rootdir,
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.fdrec = {
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.frec = {
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.type = GRUB_HFS_FILETYPE_DIR
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}
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}
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};
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grub_err_t err;
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origpath = grub_strdup (path);
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if (!origpath)
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return grub_errno;
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err = grub_fshelp_find_file_lookup (path, &root, found, lookup_file, NULL, exptype);
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path = origpath;
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while (*path == '/')
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path++;
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while (path && grub_strlen (path))
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if (&root == *found)
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{
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grub_ssize_t slen;
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if (fdrec.frec.type != GRUB_HFS_FILETYPE_DIR)
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{
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grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a directory"));
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goto fail;
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}
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/* Isolate a part of the path. */
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next = grub_strchr (path, '/');
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if (next)
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{
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while (*next == '/')
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*(next++) = '\0';
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}
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struct grub_hfs_catalog_key key;
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key.parent_dir = grub_cpu_to_be32 (inode);
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slen = utf8_to_macroman (key.str, path);
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if (slen < 0)
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{
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grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), path);
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goto fail;
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}
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key.strlen = slen;
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/* Lookup this node. */
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if (! grub_hfs_find_node (data, (char *) &key, data->cat_root,
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0, (char *) &fdrec.frec, sizeof (fdrec.frec)))
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{
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grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), origpath);
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goto fail;
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}
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if (grub_errno)
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goto fail;
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inode = grub_be_to_cpu32 (fdrec.dir.dirid);
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path = next;
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*found = grub_malloc (sizeof (root));
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if (!*found)
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return grub_errno;
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grub_memcpy (*found, &root, sizeof (root));
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}
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if (retdata)
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grub_memcpy (retdata, &fdrec.frec, sizeof (fdrec.frec));
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if (retinode)
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*retinode = inode;
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fail:
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grub_free (origpath);
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return grub_errno;
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return err;
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}
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struct grub_hfs_dir_hook_ctx
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@ -1266,16 +1258,14 @@ static grub_err_t
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grub_hfs_dir (grub_device_t device, const char *path, grub_fs_dir_hook_t hook,
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void *hook_data)
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{
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int inode;
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struct grub_hfs_data *data;
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struct grub_hfs_filerec frec;
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struct grub_hfs_dir_hook_ctx ctx =
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{
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.hook = hook,
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.hook_data = hook_data
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};
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grub_fshelp_node_t found = NULL;
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grub_dl_ref (my_mod);
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data = grub_hfs_mount (device->disk);
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@ -1283,18 +1273,13 @@ grub_hfs_dir (grub_device_t device, const char *path, grub_fs_dir_hook_t hook,
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goto fail;
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/* First the directory ID for the directory. */
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if (grub_hfs_find_dir (data, path, &frec, &inode))
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if (grub_hfs_find_dir (data, path, &found, GRUB_FSHELP_DIR))
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goto fail;
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if (frec.type != GRUB_HFS_FILETYPE_DIR)
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{
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grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a directory"));
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goto fail;
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}
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grub_hfs_iterate_dir (data, data->cat_root, inode, grub_hfs_dir_hook, &ctx);
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grub_hfs_iterate_dir (data, data->cat_root, found->inode, grub_hfs_dir_hook, &ctx);
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fail:
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grub_free (found);
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grub_free (data);
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grub_dl_unref (my_mod);
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@ -1308,8 +1293,8 @@ static grub_err_t
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grub_hfs_open (struct grub_file *file, const char *name)
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{
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struct grub_hfs_data *data;
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struct grub_hfs_filerec frec;
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grub_fshelp_node_t found = NULL;
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grub_dl_ref (my_mod);
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data = grub_hfs_mount (file->device->disk);
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@ -1320,29 +1305,23 @@ grub_hfs_open (struct grub_file *file, const char *name)
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return grub_errno;
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}
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if (grub_hfs_find_dir (data, name, &frec, 0))
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if (grub_hfs_find_dir (data, name, &found, GRUB_FSHELP_REG))
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{
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grub_free (data);
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grub_dl_unref (my_mod);
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return grub_errno;
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}
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if (frec.type != GRUB_HFS_FILETYPE_FILE)
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{
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grub_free (data);
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grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a regular file"));
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grub_dl_unref (my_mod);
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return grub_errno;
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}
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grub_memcpy (data->extents, frec.extents, sizeof (grub_hfs_datarecord_t));
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file->size = grub_be_to_cpu32 (frec.size);
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data->size = grub_be_to_cpu32 (frec.size);
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data->fileid = grub_be_to_cpu32 (frec.fileid);
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grub_memcpy (data->extents, found->fdrec.frec.extents, sizeof (grub_hfs_datarecord_t));
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file->size = grub_be_to_cpu32 (found->fdrec.frec.size);
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data->size = grub_be_to_cpu32 (found->fdrec.frec.size);
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data->fileid = grub_be_to_cpu32 (found->fdrec.frec.fileid);
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file->offset = 0;
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file->data = data;
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grub_free (found);
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return 0;
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}
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