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-rw-r--r--fs/ext2/dir.c35
-rw-r--r--fs/ext2/ext2.h17
-rw-r--r--fs/ext2/file.c1
-rw-r--r--fs/ext2/ialloc.c2
-rw-r--r--fs/ext2/inode.c30
-rw-r--r--fs/ext2/namei.c2
-rw-r--r--fs/ext2/super.c44
-rw-r--r--fs/ext2/symlink.c2
-rw-r--r--fs/ext2/xattr.c1
9 files changed, 70 insertions, 64 deletions
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 3b8114def693..13318e255ebf 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -252,33 +252,10 @@ ext2_validate_entry(char *base, unsigned offset, unsigned mask)
return (char *)p - base;
}
-static unsigned char ext2_filetype_table[EXT2_FT_MAX] = {
- [EXT2_FT_UNKNOWN] = DT_UNKNOWN,
- [EXT2_FT_REG_FILE] = DT_REG,
- [EXT2_FT_DIR] = DT_DIR,
- [EXT2_FT_CHRDEV] = DT_CHR,
- [EXT2_FT_BLKDEV] = DT_BLK,
- [EXT2_FT_FIFO] = DT_FIFO,
- [EXT2_FT_SOCK] = DT_SOCK,
- [EXT2_FT_SYMLINK] = DT_LNK,
-};
-
-#define S_SHIFT 12
-static unsigned char ext2_type_by_mode[S_IFMT >> S_SHIFT] = {
- [S_IFREG >> S_SHIFT] = EXT2_FT_REG_FILE,
- [S_IFDIR >> S_SHIFT] = EXT2_FT_DIR,
- [S_IFCHR >> S_SHIFT] = EXT2_FT_CHRDEV,
- [S_IFBLK >> S_SHIFT] = EXT2_FT_BLKDEV,
- [S_IFIFO >> S_SHIFT] = EXT2_FT_FIFO,
- [S_IFSOCK >> S_SHIFT] = EXT2_FT_SOCK,
- [S_IFLNK >> S_SHIFT] = EXT2_FT_SYMLINK,
-};
-
static inline void ext2_set_de_type(ext2_dirent *de, struct inode *inode)
{
- umode_t mode = inode->i_mode;
if (EXT2_HAS_INCOMPAT_FEATURE(inode->i_sb, EXT2_FEATURE_INCOMPAT_FILETYPE))
- de->file_type = ext2_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
+ de->file_type = fs_umode_to_ftype(inode->i_mode);
else
de->file_type = 0;
}
@@ -293,14 +270,14 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
unsigned long n = pos >> PAGE_SHIFT;
unsigned long npages = dir_pages(inode);
unsigned chunk_mask = ~(ext2_chunk_size(inode)-1);
- unsigned char *types = NULL;
bool need_revalidate = !inode_eq_iversion(inode, file->f_version);
+ bool has_filetype;
if (pos > inode->i_size - EXT2_DIR_REC_LEN(1))
return 0;
- if (EXT2_HAS_INCOMPAT_FEATURE(sb, EXT2_FEATURE_INCOMPAT_FILETYPE))
- types = ext2_filetype_table;
+ has_filetype =
+ EXT2_HAS_INCOMPAT_FEATURE(sb, EXT2_FEATURE_INCOMPAT_FILETYPE);
for ( ; n < npages; n++, offset = 0) {
char *kaddr, *limit;
@@ -335,8 +312,8 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
if (de->inode) {
unsigned char d_type = DT_UNKNOWN;
- if (types && de->file_type < EXT2_FT_MAX)
- d_type = types[de->file_type];
+ if (has_filetype)
+ d_type = fs_ftype_to_dtype(de->file_type);
if (!dir_emit(ctx, de->name, de->name_len,
le32_to_cpu(de->inode),
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index e770cd100a6a..10ab238de9a6 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -604,22 +604,6 @@ struct ext2_dir_entry_2 {
};
/*
- * Ext2 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
-enum {
- EXT2_FT_UNKNOWN = 0,
- EXT2_FT_REG_FILE = 1,
- EXT2_FT_DIR = 2,
- EXT2_FT_CHRDEV = 3,
- EXT2_FT_BLKDEV = 4,
- EXT2_FT_FIFO = 5,
- EXT2_FT_SOCK = 6,
- EXT2_FT_SYMLINK = 7,
- EXT2_FT_MAX
-};
-
-/*
* EXT2_DIR_PAD defines the directory entries boundaries
*
* NOTE: It must be a multiple of 4
@@ -774,6 +758,7 @@ extern int ext2_write_inode (struct inode *, struct writeback_control *);
extern void ext2_evict_inode(struct inode *);
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern int ext2_setattr (struct dentry *, struct iattr *);
+extern int ext2_getattr (const struct path *, struct kstat *, u32, unsigned int);
extern void ext2_set_inode_flags(struct inode *inode);
extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len);
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 28b2609f25c1..39c4772e96c9 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -199,6 +199,7 @@ const struct inode_operations ext2_file_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
+ .getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 5c3d7b7e4975..a0c5ea91fcd4 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -222,8 +222,6 @@ static int find_group_dir(struct super_block *sb, struct inode *parent)
best_desc = desc;
}
}
- if (!best_desc)
- return -1;
return best_group;
}
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index e4bb9386c045..c27c27300d95 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -717,7 +717,7 @@ static int ext2_get_blocks(struct inode *inode,
/* the number of blocks need to allocate for [d,t]indirect blocks */
indirect_blks = (chain + depth) - partial - 1;
/*
- * Next look up the indirect map to count the totoal number of
+ * Next look up the indirect map to count the total number of
* direct blocks to allocate for this branch.
*/
count = ext2_blks_to_allocate(partial, indirect_blks,
@@ -1239,6 +1239,7 @@ do_indirects:
mark_inode_dirty(inode);
ext2_free_branches(inode, &nr, &nr+1, 1);
}
+ /* fall through */
case EXT2_IND_BLOCK:
nr = i_data[EXT2_DIND_BLOCK];
if (nr) {
@@ -1246,6 +1247,7 @@ do_indirects:
mark_inode_dirty(inode);
ext2_free_branches(inode, &nr, &nr+1, 2);
}
+ /* fall through */
case EXT2_DIND_BLOCK:
nr = i_data[EXT2_TIND_BLOCK];
if (nr) {
@@ -1635,6 +1637,32 @@ int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
+int ext2_getattr(const struct path *path, struct kstat *stat,
+ u32 request_mask, unsigned int query_falgs)
+{
+ struct inode *inode = d_inode(path->dentry);
+ struct ext2_inode_info *ei = EXT2_I(inode);
+ unsigned int flags;
+
+ flags = ei->i_flags & EXT2_FL_USER_VISIBLE;
+ if (flags & EXT2_APPEND_FL)
+ stat->attributes |= STATX_ATTR_APPEND;
+ if (flags & EXT2_COMPR_FL)
+ stat->attributes |= STATX_ATTR_COMPRESSED;
+ if (flags & EXT2_IMMUTABLE_FL)
+ stat->attributes |= STATX_ATTR_IMMUTABLE;
+ if (flags & EXT2_NODUMP_FL)
+ stat->attributes |= STATX_ATTR_NODUMP;
+ stat->attributes_mask |= (STATX_ATTR_APPEND |
+ STATX_ATTR_COMPRESSED |
+ STATX_ATTR_ENCRYPTED |
+ STATX_ATTR_IMMUTABLE |
+ STATX_ATTR_NODUMP);
+
+ generic_fillattr(inode, stat);
+ return 0;
+}
+
int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct inode *inode = d_inode(dentry);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 0c26dcc5d850..ccfbbf59e2fc 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -416,6 +416,7 @@ const struct inode_operations ext2_dir_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
+ .getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,
@@ -426,6 +427,7 @@ const struct inode_operations ext2_special_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
+ .getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 73b2d528237f..0128010a0874 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -757,7 +757,8 @@ static loff_t ext2_max_size(int bits)
{
loff_t res = EXT2_NDIR_BLOCKS;
int meta_blocks;
- loff_t upper_limit;
+ unsigned int upper_limit;
+ unsigned int ppb = 1 << (bits-2);
/* This is calculated to be the largest file size for a
* dense, file such that the total number of
@@ -771,24 +772,34 @@ static loff_t ext2_max_size(int bits)
/* total blocks in file system block size */
upper_limit >>= (bits - 9);
+ /* Compute how many blocks we can address by block tree */
+ res += 1LL << (bits-2);
+ res += 1LL << (2*(bits-2));
+ res += 1LL << (3*(bits-2));
+ /* Does block tree limit file size? */
+ if (res < upper_limit)
+ goto check_lfs;
+ res = upper_limit;
+ /* How many metadata blocks are needed for addressing upper_limit? */
+ upper_limit -= EXT2_NDIR_BLOCKS;
/* indirect blocks */
meta_blocks = 1;
+ upper_limit -= ppb;
/* double indirect blocks */
- meta_blocks += 1 + (1LL << (bits-2));
- /* tripple indirect blocks */
- meta_blocks += 1 + (1LL << (bits-2)) + (1LL << (2*(bits-2)));
-
- upper_limit -= meta_blocks;
- upper_limit <<= bits;
-
- res += 1LL << (bits-2);
- res += 1LL << (2*(bits-2));
- res += 1LL << (3*(bits-2));
+ if (upper_limit < ppb * ppb) {
+ meta_blocks += 1 + DIV_ROUND_UP(upper_limit, ppb);
+ res -= meta_blocks;
+ goto check_lfs;
+ }
+ meta_blocks += 1 + ppb;
+ upper_limit -= ppb * ppb;
+ /* tripple indirect blocks for the rest */
+ meta_blocks += 1 + DIV_ROUND_UP(upper_limit, ppb) +
+ DIV_ROUND_UP(upper_limit, ppb*ppb);
+ res -= meta_blocks;
+check_lfs:
res <<= bits;
- if (res > upper_limit)
- res = upper_limit;
-
if (res > MAX_LFS_FILESIZE)
res = MAX_LFS_FILESIZE;
@@ -1024,8 +1035,6 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_frags_per_group = le32_to_cpu(es->s_frags_per_group);
sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
- if (EXT2_INODE_SIZE(sb) == 0)
- goto cantfind_ext2;
sbi->s_inodes_per_block = sb->s_blocksize / EXT2_INODE_SIZE(sb);
if (sbi->s_inodes_per_block == 0 || sbi->s_inodes_per_group == 0)
goto cantfind_ext2;
@@ -1087,12 +1096,14 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sizeof(struct buffer_head *),
GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
+ ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount;
}
bgl_lock_init(sbi->s_blockgroup_lock);
sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
if (!sbi->s_debts) {
+ ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount_group_desc;
}
@@ -1148,6 +1159,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_EXT2_FS_XATTR
sbi->s_ea_block_cache = ext2_xattr_create_cache();
if (!sbi->s_ea_block_cache) {
+ ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "Failed to create ea_block_cache");
goto failed_mount3;
}
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index d5589ddcc281..00cdb8679486 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -23,6 +23,7 @@
const struct inode_operations ext2_symlink_inode_operations = {
.get_link = page_get_link,
+ .getattr = ext2_getattr,
.setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
@@ -31,6 +32,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
const struct inode_operations ext2_fast_symlink_inode_operations = {
.get_link = simple_get_link,
+ .getattr = ext2_getattr,
.setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 4f30876ee325..1e33e0ac8cf1 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -342,6 +342,7 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
return;
spin_lock(&EXT2_SB(sb)->s_lock);
+ ext2_update_dynamic_rev(sb);
EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
spin_unlock(&EXT2_SB(sb)->s_lock);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-13 08:19:19 +0100