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restructure AFFS fshelp_node-related code

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-11 21:59:22 +01:00
parent 9959c6a70b
commit e21c356413
1 changed files with 53 additions and 31 deletions
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84
grub-core/fs/affs.c
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@ -50,12 +50,20 @@ struct grub_affs_rblock
grub_uint32_t hashtable[1]; grub_uint32_t hashtable[1];
} __attribute__ ((packed)); } __attribute__ ((packed));
struct grub_affs_time
{
grub_int32_t day;
grub_uint32_t min;
grub_uint32_t fractions_of_sec;
} __attribute__ ((packed));
/* The second part of a file header block. */ /* The second part of a file header block. */
struct grub_affs_file struct grub_affs_file
{ {
grub_uint8_t unused1[12]; grub_uint8_t unused1[12];
grub_uint32_t size; grub_uint32_t size;
grub_uint8_t unused2[104]; grub_uint8_t unused2[92];
struct grub_affs_time mtime;
grub_uint8_t namelen; grub_uint8_t namelen;
grub_uint8_t name[30]; grub_uint8_t name[30];
grub_uint8_t unused3[33]; grub_uint8_t unused3[33];
@ -85,9 +93,9 @@ struct grub_affs_file
struct grub_fshelp_node struct grub_fshelp_node
{ {
struct grub_affs_data *data; struct grub_affs_data *data;
int block; grub_disk_addr_t block;
int size; struct grub_fshelp_node *parent;
int parent; struct grub_affs_file di;
}; };
/* Information about a "mounted" affs filesystem. */ /* Information about a "mounted" affs filesystem. */
@ -154,7 +162,7 @@ grub_affs_read_file (grub_fshelp_node_t node,
{ {
return grub_fshelp_read_file (node->data->disk, node, read_hook, return grub_fshelp_read_file (node->data->disk, node, read_hook,
pos, len, buf, grub_affs_read_block, pos, len, buf, grub_affs_read_block,
node->size, 0); grub_be_to_cpu32 (node->di.size), 0);
} }
@ -241,6 +249,8 @@ grub_affs_mount (grub_disk_t disk)
data->htsize = grub_be_to_cpu32 (rblock->htsize); data->htsize = grub_be_to_cpu32 (rblock->htsize);
data->diropen.data = data; data->diropen.data = data;
data->diropen.block = grub_be_to_cpu32 (data->bblock.rootblock); data->diropen.block = grub_be_to_cpu32 (data->bblock.rootblock);
data->diropen.parent = NULL;
grub_memcpy (&data->diropen.di, rootblock, sizeof (data->diropen.di));
grub_free (rootblock); grub_free (rootblock);
@ -291,12 +301,15 @@ grub_affs_iterate_dir (grub_fshelp_node_t dir,
struct grub_affs_data *data = dir->data; struct grub_affs_data *data = dir->data;
grub_uint32_t *hashtable; grub_uint32_t *hashtable;
auto int NESTED_FUNC_ATTR grub_affs_create_node (const char *name, int block, auto int NESTED_FUNC_ATTR grub_affs_create_node (const char *name,
int size, int type); grub_disk_addr_t block,
const struct grub_affs_file *fil);
int NESTED_FUNC_ATTR grub_affs_create_node (const char *name, int block, int NESTED_FUNC_ATTR grub_affs_create_node (const char *name,
int size, int type) grub_disk_addr_t block,
const struct grub_affs_file *fil)
{ {
int type;
node = grub_malloc (sizeof (*node)); node = grub_malloc (sizeof (*node));
if (!node) if (!node)
{ {
@ -304,10 +317,19 @@ grub_affs_iterate_dir (grub_fshelp_node_t dir,
return 1; return 1;
} }
if ((int) grub_be_to_cpu32 (fil->type) == GRUB_AFFS_FILETYPE_DIR)
type = GRUB_FSHELP_REG;
else if (grub_be_to_cpu32 (fil->type) == GRUB_AFFS_FILETYPE_REG)
type = GRUB_FSHELP_DIR;
else if (grub_be_to_cpu32 (fil->type) == GRUB_AFFS_FILETYPE_SYMLINK)
type = GRUB_FSHELP_SYMLINK;
else
type = GRUB_FSHELP_UNKNOWN;
node->data = data; node->data = data;
node->size = size;
node->block = block; node->block = block;
node->parent = grub_be_to_cpu32 (file.parent); node->di = *fil;
node->parent = dir;
if (hook (name, type, node)) if (hook (name, type, node))
{ {
@ -317,6 +339,24 @@ grub_affs_iterate_dir (grub_fshelp_node_t dir,
return 0; return 0;
} }
/* Create the directory entries for `.' and `..'. */
node = grub_malloc (sizeof (*node));
if (!node)
return 1;
*node = *dir;
if (hook (".", GRUB_FSHELP_DIR, node))
return 1;
if (dir->parent)
{
node = grub_malloc (sizeof (*node));
if (!node)
return 1;
*node = *dir->parent;
if (hook ("..", GRUB_FSHELP_DIR, node))
return 1;
}
hashtable = grub_malloc (data->htsize * sizeof (*hashtable)); hashtable = grub_malloc (data->htsize * sizeof (*hashtable));
if (!hashtable) if (!hashtable)
return 1; return 1;
@ -326,16 +366,8 @@ grub_affs_iterate_dir (grub_fshelp_node_t dir,
if (grub_errno) if (grub_errno)
goto fail; goto fail;
/* Create the directory entries for `.' and `..'. */
if (grub_affs_create_node (".", dir->block, dir->size, GRUB_FSHELP_DIR))
return 1;
if (grub_affs_create_node ("..", dir->parent ? dir->parent : dir->block,
dir->size, GRUB_FSHELP_DIR))
return 1;
for (i = 0; i < data->htsize; i++) for (i = 0; i < data->htsize; i++)
{ {
enum grub_fshelp_filetype type;
grub_uint64_t next; grub_uint64_t next;
if (!hashtable[i]) if (!hashtable[i])
@ -356,17 +388,7 @@ grub_affs_iterate_dir (grub_fshelp_node_t dir,
file.name[file.namelen] = '\0'; file.name[file.namelen] = '\0';
if ((int) grub_be_to_cpu32 (file.type) == GRUB_AFFS_FILETYPE_DIR) if (grub_affs_create_node ((char *) (file.name), next, &file))
type = GRUB_FSHELP_REG;
else if (grub_be_to_cpu32 (file.type) == GRUB_AFFS_FILETYPE_REG)
type = GRUB_FSHELP_DIR;
else if (grub_be_to_cpu32 (file.type) == GRUB_AFFS_FILETYPE_SYMLINK)
type = GRUB_FSHELP_SYMLINK;
else
type = GRUB_FSHELP_UNKNOWN;
if (grub_affs_create_node ((char *) (file.name), next,
grub_be_to_cpu32 (file.size), type))
return 1; return 1;
next = grub_be_to_cpu32 (file.next); next = grub_be_to_cpu32 (file.next);
@ -401,7 +423,7 @@ grub_affs_open (struct grub_file *file, const char *name)
if (grub_errno) if (grub_errno)
goto fail; goto fail;
file->size = fdiro->size; file->size = grub_be_to_cpu32 (fdiro->di.size);
data->diropen = *fdiro; data->diropen = *fdiro;
grub_free (fdiro); grub_free (fdiro);