grub_iso9660_susp_iterate (grub_fshelp_node_t node, grub_off_t off,
grub_ssize_t sua_size,
grub_err_t (*hook)
- (struct grub_iso9660_susp_entry *entry))
+ (struct grub_iso9660_susp_entry *entry, void *hook_arg),
+ void *hook_arg)
{
char *sua;
struct grub_iso9660_susp_entry *entry;
- grub_disk_addr_t ce_block;
- int is_ce = 0;
-
- auto grub_err_t load_sua (void);
-
- /* Load a part of the System Usage Area. */
- grub_err_t load_sua (void)
- {
- grub_err_t err;
- sua = grub_malloc (sua_size);
- if (!sua)
- return grub_errno;
-
- if (is_ce)
- err = grub_disk_read (node->data->disk, ce_block, off,
- sua_size, sua);
- else
- err = read_node (node, off, sua_size, sua);
- if (err)
- return err;
-
- entry = (struct grub_iso9660_susp_entry *) sua;
- return 0;
- }
+ grub_err_t err;
if (sua_size <= 0)
return GRUB_ERR_NONE;
- if (load_sua ())
+ sua = grub_malloc (sua_size);
+ if (!sua)
return grub_errno;
- for (; (char *) entry < (char *) sua + sua_size - 1 && entry->len > 0;
+ /* Load a part of the System Usage Area. */
+ err = read_node (node, off, sua_size, sua);
+ if (err)
+ return err;
+
+ for (entry = (struct grub_iso9660_susp_entry *) sua; (char *) entry < (char *) sua + sua_size - 1 && entry->len > 0;
entry = (struct grub_iso9660_susp_entry *)
((char *) entry + entry->len))
{
if (grub_strncmp ((char *) entry->sig, "CE", 2) == 0)
{
struct grub_iso9660_susp_ce *ce;
+ grub_disk_addr_t ce_block;
- is_ce = 1;
ce = (struct grub_iso9660_susp_ce *) entry;
sua_size = grub_le_to_cpu32 (ce->len);
off = grub_le_to_cpu32 (ce->off);
ce_block = grub_le_to_cpu32 (ce->blk) << GRUB_ISO9660_LOG2_BLKSZ;
grub_free (sua);
- if (load_sua ())
+ sua = grub_malloc (sua_size);
+ if (!sua)
return grub_errno;
+
+ /* Load a part of the System Usage Area. */
+ err = grub_disk_read (node->data->disk, ce_block, off,
+ sua_size, sua);
+ if (err)
+ return err;
+
+ entry = (struct grub_iso9660_susp_entry *) sua;
}
- if (hook (entry))
+ if (hook (entry, hook_arg))
{
grub_free (sua);
return 0;
return p;
}
+static grub_err_t
+susp_iterate_set_rockridge (struct grub_iso9660_susp_entry *susp_entry,
+ void *_data)
+{
+ struct grub_iso9660_data *data = _data;
+ /* The "ER" entry is used to detect extensions. The
+ `IEEE_P1285' extension means Rock ridge. */
+ if (grub_strncmp ((char *) susp_entry->sig, "ER", 2) == 0)
+ {
+ data->rockridge = 1;
+ return 1;
+ }
+ return 0;
+}
+
static grub_err_t
set_rockridge (struct grub_iso9660_data *data)
{
struct grub_iso9660_dir rootdir;
struct grub_iso9660_susp_entry *entry;
- auto grub_err_t susp_iterate (struct grub_iso9660_susp_entry *);
-
- grub_err_t susp_iterate (struct grub_iso9660_susp_entry *susp_entry)
- {
- /* The "ER" entry is used to detect extensions. The
- `IEEE_P1285' extension means Rock ridge. */
- if (grub_strncmp ((char *) susp_entry->sig, "ER", 2) == 0)
- {
- data->rockridge = 1;
- return 1;
- }
- return 0;
- }
-
data->rockridge = 0;
/* Read the system use area and test it to see if SUSP is
/* Iterate over the entries in the SUA area to detect
extensions. */
if (grub_iso9660_susp_iterate (&rootnode,
- sua_pos, sua_size, susp_iterate))
+ sua_pos, sua_size, susp_iterate_set_rockridge,
+ data))
{
grub_free (sua);
return grub_errno;
return ret;
}
-static int
-grub_iso9660_iterate_dir (grub_fshelp_node_t dir,
- grub_fshelp_iterate_dir_hook_t hook, void *hook_data)
+struct iterate_dir_ctx
{
- struct grub_iso9660_dir dirent;
- grub_off_t offset = 0;
- char *filename = 0;
- int filename_alloc = 0;
+ char *filename;
+ int filename_alloc;
enum grub_fshelp_filetype type;
- grub_off_t len;
- char *symlink = 0;
- int was_continue = 0;
+ char *symlink;
+ int was_continue;
+};
/* Extend the symlink. */
- auto inline void __attribute__ ((always_inline)) add_part (const char *part,
- int len2);
-
- auto inline void __attribute__ ((always_inline)) add_part (const char *part,
- int len2)
- {
- int size = symlink ? grub_strlen (symlink) : 0;
+static void __attribute__ ((always_inline))
+add_part (struct iterate_dir_ctx *ctx,
+ const char *part,
+ int len2)
+{
+ int size = ctx->symlink ? grub_strlen (ctx->symlink) : 0;
- symlink = grub_realloc (symlink, size + len2 + 1);
- if (! symlink)
- return;
+ ctx->symlink = grub_realloc (ctx->symlink, size + len2 + 1);
+ if (! ctx->symlink)
+ return;
- symlink[size] = 0;
- grub_strncat (symlink, part, len2);
- }
+ ctx->symlink[size] = 0;
+ grub_strncat (ctx->symlink, part, len2);
+}
- auto grub_err_t susp_iterate_dir (struct grub_iso9660_susp_entry *);
+static grub_err_t
+susp_iterate_dir (struct grub_iso9660_susp_entry *entry,
+ void *_ctx)
+{
+ struct iterate_dir_ctx *ctx = _ctx;
- grub_err_t susp_iterate_dir (struct grub_iso9660_susp_entry *entry)
+ /* The filename in the rock ridge entry. */
+ if (grub_strncmp ("NM", (char *) entry->sig, 2) == 0)
{
- /* The filename in the rock ridge entry. */
- if (grub_strncmp ("NM", (char *) entry->sig, 2) == 0)
+ /* The flags are stored at the data position 0, here the
+ filename type is stored. */
+ /* FIXME: Fix this slightly improper cast. */
+ if (entry->data[0] & GRUB_ISO9660_RR_DOT)
+ ctx->filename = (char *) ".";
+ else if (entry->data[0] & GRUB_ISO9660_RR_DOTDOT)
+ ctx->filename = (char *) "..";
+ else if (entry->len >= 5)
{
- /* The flags are stored at the data position 0, here the
- filename type is stored. */
- /* FIXME: Fix this slightly improper cast. */
- if (entry->data[0] & GRUB_ISO9660_RR_DOT)
- filename = (char *) ".";
- else if (entry->data[0] & GRUB_ISO9660_RR_DOTDOT)
- filename = (char *) "..";
- else if (entry->len >= 5)
+ grub_size_t size = 1, csize = 1;
+ char *old;
+ csize = size = entry->len - 5;
+ old = ctx->filename;
+ if (ctx->filename_alloc)
+ {
+ size += grub_strlen (ctx->filename);
+ ctx->filename = grub_realloc (ctx->filename, size + 1);
+ }
+ else
+ {
+ ctx->filename_alloc = 1;
+ ctx->filename = grub_zalloc (size + 1);
+ ctx->filename[0] = 0;
+ }
+ if (!ctx->filename)
{
- grub_size_t size = 1, csize = 1;
- char *old;
- csize = size = entry->len - 5;
- old = filename;
- if (filename_alloc)
- {
- size += grub_strlen (filename);
- filename = grub_realloc (filename, size + 1);
- }
- else
- {
- filename_alloc = 1;
- filename = grub_zalloc (size + 1);
- filename[0] = 0;
- }
- if (!filename)
- {
- filename = old;
- return grub_errno;
- }
- filename_alloc = 1;
- grub_strncat (filename, (char *) &entry->data[1], csize);
- filename[size] = '\0';
+ ctx->filename = old;
+ return grub_errno;
}
+ ctx->filename_alloc = 1;
+ grub_strncat (ctx->filename, (char *) &entry->data[1], csize);
+ ctx->filename[size] = '\0';
}
- /* The mode information (st_mode). */
- else if (grub_strncmp ((char *) entry->sig, "PX", 2) == 0)
+ }
+ /* The mode information (st_mode). */
+ else if (grub_strncmp ((char *) entry->sig, "PX", 2) == 0)
+ {
+ /* At position 0 of the PX record the st_mode information is
+ stored (little-endian). */
+ grub_uint32_t mode = ((entry->data[0] + (entry->data[1] << 8))
+ & GRUB_ISO9660_FSTYPE_MASK);
+
+ switch (mode)
{
- /* At position 0 of the PX record the st_mode information is
- stored (little-endian). */
- grub_uint32_t mode = ((entry->data[0] + (entry->data[1] << 8))
- & GRUB_ISO9660_FSTYPE_MASK);
+ case GRUB_ISO9660_FSTYPE_DIR:
+ ctx->type = GRUB_FSHELP_DIR;
+ break;
+ case GRUB_ISO9660_FSTYPE_REG:
+ ctx->type = GRUB_FSHELP_REG;
+ break;
+ case GRUB_ISO9660_FSTYPE_SYMLINK:
+ ctx->type = GRUB_FSHELP_SYMLINK;
+ break;
+ default:
+ ctx->type = GRUB_FSHELP_UNKNOWN;
+ }
+ }
+ else if (grub_strncmp ("SL", (char *) entry->sig, 2) == 0)
+ {
+ unsigned int pos = 1;
- switch (mode)
+ /* The symlink is not stored as a POSIX symlink, translate it. */
+ while (pos + sizeof (*entry) < entry->len)
+ {
+ /* The current position is the `Component Flag'. */
+ switch (entry->data[pos] & 30)
{
- case GRUB_ISO9660_FSTYPE_DIR:
- type = GRUB_FSHELP_DIR;
+ case 0:
+ {
+ /* The data on pos + 2 is the actual data, pos + 1
+ is the length. Both are part of the `Component
+ Record'. */
+ if (ctx->symlink && !ctx->was_continue)
+ add_part (ctx, "/", 1);
+ add_part (ctx, (char *) &entry->data[pos + 2],
+ entry->data[pos + 1]);
+ ctx->was_continue = (entry->data[pos] & 1);
+ break;
+ }
+
+ case 2:
+ add_part (ctx, "./", 2);
break;
- case GRUB_ISO9660_FSTYPE_REG:
- type = GRUB_FSHELP_REG;
+
+ case 4:
+ add_part (ctx, "../", 3);
break;
- case GRUB_ISO9660_FSTYPE_SYMLINK:
- type = GRUB_FSHELP_SYMLINK;
+
+ case 8:
+ add_part (ctx, "/", 1);
break;
- default:
- type = GRUB_FSHELP_UNKNOWN;
}
+ /* In pos + 1 the length of the `Component Record' is
+ stored. */
+ pos += entry->data[pos + 1] + 2;
}
- else if (grub_strncmp ("SL", (char *) entry->sig, 2) == 0)
- {
- unsigned int pos = 1;
-
- /* The symlink is not stored as a POSIX symlink, translate it. */
- while (pos + sizeof (*entry) < entry->len)
- {
- /* The current position is the `Component Flag'. */
- switch (entry->data[pos] & 30)
- {
- case 0:
- {
- /* The data on pos + 2 is the actual data, pos + 1
- is the length. Both are part of the `Component
- Record'. */
- if (symlink && !was_continue)
- add_part ("/", 1);
- add_part ((char *) &entry->data[pos + 2],
- entry->data[pos + 1]);
- was_continue = (entry->data[pos] & 1);
- break;
- }
- case 2:
- add_part ("./", 2);
- break;
-
- case 4:
- add_part ("../", 3);
- break;
-
- case 8:
- add_part ("/", 1);
- break;
- }
- /* In pos + 1 the length of the `Component Record' is
- stored. */
- pos += entry->data[pos + 1] + 2;
- }
+ /* Check if `grub_realloc' failed. */
+ if (grub_errno)
+ return grub_errno;
+ }
- /* Check if `grub_realloc' failed. */
- if (grub_errno)
- return grub_errno;
- }
+ return 0;
+}
- return 0;
- }
+static int
+grub_iso9660_iterate_dir (grub_fshelp_node_t dir,
+ grub_fshelp_iterate_dir_hook_t hook, void *hook_data)
+{
+ struct grub_iso9660_dir dirent;
+ grub_off_t offset = 0;
+ grub_off_t len;
+ struct iterate_dir_ctx ctx;
len = get_node_size (dir);
for (; offset < len; offset += dirent.len)
{
- symlink = 0;
- was_continue = 0;
+ ctx.symlink = 0;
+ ctx.was_continue = 0;
if (read_node (dir, offset, sizeof (dirent), (char *) &dirent))
return 0;
sua_off += offset + dir->data->susp_skip;
- filename = 0;
- filename_alloc = 0;
- type = GRUB_FSHELP_UNKNOWN;
+ ctx.filename = 0;
+ ctx.filename_alloc = 0;
+ ctx.type = GRUB_FSHELP_UNKNOWN;
if (dir->data->rockridge
&& grub_iso9660_susp_iterate (dir, sua_off, sua_size,
- susp_iterate_dir))
+ susp_iterate_dir, &ctx))
return 0;
/* Read the name. */
/* If the filetype was not stored using rockridge, use
whatever is stored in the iso9660 filesystem. */
- if (type == GRUB_FSHELP_UNKNOWN)
+ if (ctx.type == GRUB_FSHELP_UNKNOWN)
{
if ((dirent.flags & FLAG_TYPE) == FLAG_TYPE_DIR)
- type = GRUB_FSHELP_DIR;
+ ctx.type = GRUB_FSHELP_DIR;
else
- type = GRUB_FSHELP_REG;
+ ctx.type = GRUB_FSHELP_REG;
}
/* . and .. */
- if (!filename && dirent.namelen == 1 && name[0] == 0)
- filename = (char *) ".";
+ if (!ctx.filename && dirent.namelen == 1 && name[0] == 0)
+ ctx.filename = (char *) ".";
- if (!filename && dirent.namelen == 1 && name[0] == 1)
- filename = (char *) "..";
+ if (!ctx.filename && dirent.namelen == 1 && name[0] == 1)
+ ctx.filename = (char *) "..";
/* The filename was not stored in a rock ridge entry. Read it
from the iso9660 filesystem. */
- if (!dir->data->joliet && !filename)
+ if (!dir->data->joliet && !ctx.filename)
{
char *ptr;
name[dirent.namelen] = '\0';
- filename = grub_strrchr (name, ';');
- if (filename)
- *filename = '\0';
+ ctx.filename = grub_strrchr (name, ';');
+ if (ctx.filename)
+ *ctx.filename = '\0';
/* ISO9660 names are not case-preserving. */
- type |= GRUB_FSHELP_CASE_INSENSITIVE;
+ ctx.type |= GRUB_FSHELP_CASE_INSENSITIVE;
for (ptr = name; *ptr; ptr++)
*ptr = grub_tolower (*ptr);
if (ptr != name && *(ptr - 1) == '.')
*(ptr - 1) = 0;
- filename = name;
+ ctx.filename = name;
}
- if (dir->data->joliet && !filename)
+ if (dir->data->joliet && !ctx.filename)
{
char *oldname, *semicolon;
oldname = name;
- filename = grub_iso9660_convert_string
+ ctx.filename = grub_iso9660_convert_string
((grub_uint8_t *) oldname, dirent.namelen >> 1);
- semicolon = grub_strrchr (filename, ';');
+ semicolon = grub_strrchr (ctx.filename, ';');
if (semicolon)
*semicolon = '\0';
- if (filename_alloc)
+ if (ctx.filename_alloc)
grub_free (oldname);
- filename_alloc = 1;
+ ctx.filename_alloc = 1;
}
node->dirents[0] = dirent;
offset += dirent.len;
if (read_node (dir, offset, sizeof (dirent), (char *) &dirent))
{
- if (filename_alloc)
- grub_free (filename);
+ if (ctx.filename_alloc)
+ grub_free (ctx.filename);
grub_free (node);
return 0;
}
* sizeof (node->dirents[0])));
if (!new_node)
{
- if (filename_alloc)
- grub_free (filename);
+ if (ctx.filename_alloc)
+ grub_free (ctx.filename);
grub_free (node);
return 0;
}
}
node->dirents[node->have_dirents++] = dirent;
}
- if (symlink)
+ if (ctx.symlink)
{
if ((node->alloc_dirents - node->have_dirents)
- * sizeof (node->dirents[0]) < grub_strlen (symlink) + 1)
+ * sizeof (node->dirents[0]) < grub_strlen (ctx.symlink) + 1)
{
struct grub_fshelp_node *new_node;
new_node = grub_realloc (node,
+ ((node->alloc_dirents
- ARRAY_SIZE (node->dirents))
* sizeof (node->dirents[0]))
- + grub_strlen (symlink) + 1);
+ + grub_strlen (ctx.symlink) + 1);
if (!new_node)
{
- if (filename_alloc)
- grub_free (filename);
+ if (ctx.filename_alloc)
+ grub_free (ctx.filename);
grub_free (node);
return 0;
}
node->have_symlink = 1;
grub_strcpy (node->symlink
+ node->have_dirents * sizeof (node->dirents[0])
- - sizeof (node->dirents), symlink);
- grub_free (symlink);
- symlink = 0;
- was_continue = 0;
+ - sizeof (node->dirents), ctx.symlink);
+ grub_free (ctx.symlink);
+ ctx.symlink = 0;
+ ctx.was_continue = 0;
}
- if (hook (filename, type, node, hook_data))
+ if (hook (ctx.filename, ctx.type, node, hook_data))
{
- if (filename_alloc)
- grub_free (filename);
+ if (ctx.filename_alloc)
+ grub_free (ctx.filename);
return 1;
}
- if (filename_alloc)
- grub_free (filename);
+ if (ctx.filename_alloc)
+ grub_free (ctx.filename);
}
}
projects / thirdparty / grub.git / commitdiff
