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-rw-r--r--fs/hfsplus/btree.c4
-rw-r--r--fs/hfsplus/dir.c2
-rw-r--r--fs/hfsplus/hfsplus_fs.h4
-rw-r--r--fs/hfsplus/inode.c7
-rw-r--r--fs/hfsplus/ioctl.c2
-rw-r--r--fs/hfsplus/super.c6
-rw-r--r--fs/hfsplus/unicode.c230
7 files changed, 204 insertions, 51 deletions
diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c
index 90ebab753d30..050d29c0a5b5 100644
--- a/fs/hfsplus/btree.c
+++ b/fs/hfsplus/btree.c
@@ -62,8 +62,10 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
if ((HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX) &&
(head->key_type == HFSPLUS_KEY_BINARY))
tree->keycmp = hfsplus_cat_bin_cmp_key;
- else
+ else {
tree->keycmp = hfsplus_cat_case_cmp_key;
+ HFSPLUS_SB(sb).flags |= HFSPLUS_SB_CASEFOLD;
+ }
} else {
printk(KERN_ERR "hfs: unknown B*Tree requested\n");
goto fail_page;
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 80b5682a2273..1955ee61251c 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -36,6 +36,8 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
u16 type;
sb = dir->i_sb;
+
+ dentry->d_op = &hfsplus_dentry_operations;
dentry->d_fsdata = NULL;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 3915635b4470..d9f5eda6d039 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -150,6 +150,7 @@ struct hfsplus_sb_info {
#define HFSPLUS_SB_NODECOMPOSE 0x0002
#define HFSPLUS_SB_FORCE 0x0004
#define HFSPLUS_SB_HFSX 0x0008
+#define HFSPLUS_SB_CASEFOLD 0x0010
struct hfsplus_inode_info {
@@ -321,6 +322,7 @@ void hfsplus_file_truncate(struct inode *);
/* inode.c */
extern const struct address_space_operations hfsplus_aops;
extern const struct address_space_operations hfsplus_btree_aops;
+extern struct dentry_operations hfsplus_dentry_operations;
void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
@@ -353,6 +355,8 @@ int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unist
int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *);
int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int);
+int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str);
+int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2);
/* wrapper.c */
int hfsplus_read_wrapper(struct super_block *);
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 45dab5d6cc10..6f7c662174db 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -131,6 +131,11 @@ const struct address_space_operations hfsplus_aops = {
.writepages = hfsplus_writepages,
};
+struct dentry_operations hfsplus_dentry_operations = {
+ .d_hash = hfsplus_hash_dentry,
+ .d_compare = hfsplus_compare_dentry,
+};
+
static struct dentry *hfsplus_file_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
{
@@ -288,7 +293,7 @@ static const struct file_operations hfsplus_file_operations = {
.write = do_sync_write,
.aio_write = generic_file_aio_write,
.mmap = generic_file_mmap,
- .sendfile = generic_file_sendfile,
+ .splice_read = generic_file_splice_read,
.fsync = file_fsync,
.open = hfsplus_file_open,
.release = hfsplus_file_release,
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 79fd10402ea3..b60c0affbec5 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -38,7 +38,7 @@ int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
if (IS_RDONLY(inode))
return -EROFS;
- if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ if (!is_owner_or_cap(inode))
return -EACCES;
if (get_user(flags, (int __user *)arg))
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index ebd1b380cbbc..7b0f2e5a44e2 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -283,11 +283,10 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
struct nls_table *nls = NULL;
int err = -EINVAL;
- sbi = kmalloc(sizeof(struct hfsplus_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
- memset(sbi, 0, sizeof(HFSPLUS_SB(sb)));
sb->s_fs_info = sbi;
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
hfsplus_fill_defaults(sbi);
@@ -381,6 +380,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
iput(root);
goto cleanup;
}
+ sb->s_root->d_op = &hfsplus_dentry_operations;
str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1;
str.name = HFSP_HIDDENDIR_NAME;
@@ -479,7 +479,7 @@ static int __init init_hfsplus_fs(void)
hfsplus_inode_cachep = kmem_cache_create("hfsplus_icache",
HFSPLUS_INODE_SIZE, 0, SLAB_HWCACHE_ALIGN,
- hfsplus_init_once, NULL);
+ hfsplus_init_once);
if (!hfsplus_inode_cachep)
return -ENOMEM;
err = register_filesystem(&hfsplus_fs_type);
diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c
index 689c8bd721fb..9e10f9444b64 100644
--- a/fs/hfsplus/unicode.c
+++ b/fs/hfsplus/unicode.c
@@ -239,61 +239,201 @@ out:
return res;
}
-int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, const char *astr, int len)
+/*
+ * Convert one or more ASCII characters into a single unicode character.
+ * Returns the number of ASCII characters corresponding to the unicode char.
+ */
+static inline int asc2unichar(struct super_block *sb, const char *astr, int len,
+ wchar_t *uc)
{
- struct nls_table *nls = HFSPLUS_SB(sb).nls;
- int size, off, decompose;
+ int size = HFSPLUS_SB(sb).nls->char2uni(astr, len, uc);
+ if (size <= 0) {
+ *uc = '?';
+ size = 1;
+ }
+ switch (*uc) {
+ case 0x2400:
+ *uc = 0;
+ break;
+ case ':':
+ *uc = '/';
+ break;
+ }
+ return size;
+}
+
+/* Decomposes a single unicode character. */
+static inline u16 *decompose_unichar(wchar_t uc, int *size)
+{
+ int off;
+
+ off = hfsplus_decompose_table[(uc >> 12) & 0xf];
+ if (off == 0 || off == 0xffff)
+ return NULL;
+
+ off = hfsplus_decompose_table[off + ((uc >> 8) & 0xf)];
+ if (!off)
+ return NULL;
+
+ off = hfsplus_decompose_table[off + ((uc >> 4) & 0xf)];
+ if (!off)
+ return NULL;
+
+ off = hfsplus_decompose_table[off + (uc & 0xf)];
+ *size = off & 3;
+ if (*size == 0)
+ return NULL;
+ return hfsplus_decompose_table + (off / 4);
+}
+
+int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
+ const char *astr, int len)
+{
+ int size, dsize, decompose;
+ u16 *dstr, outlen = 0;
wchar_t c;
- u16 outlen = 0;
decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
-
while (outlen < HFSPLUS_MAX_STRLEN && len > 0) {
- size = nls->char2uni(astr, len, &c);
- if (size <= 0) {
- c = '?';
- size = 1;
- }
- astr += size;
- len -= size;
- switch (c) {
- case 0x2400:
- c = 0;
- break;
- case ':':
- c = '/';
- break;
- }
- if (c >= 0xc0 && decompose) {
- off = hfsplus_decompose_table[(c >> 12) & 0xf];
- if (!off)
- goto done;
- if (off == 0xffff) {
- goto done;
- }
- off = hfsplus_decompose_table[off + ((c >> 8) & 0xf)];
- if (!off)
- goto done;
- off = hfsplus_decompose_table[off + ((c >> 4) & 0xf)];
- if (!off)
- goto done;
- off = hfsplus_decompose_table[off + (c & 0xf)];
- size = off & 3;
- if (!size)
- goto done;
- off /= 4;
- if (outlen + size > HFSPLUS_MAX_STRLEN)
+ size = asc2unichar(sb, astr, len, &c);
+
+ if (decompose && (dstr = decompose_unichar(c, &dsize))) {
+ if (outlen + dsize > HFSPLUS_MAX_STRLEN)
break;
do {
- ustr->unicode[outlen++] = cpu_to_be16(hfsplus_decompose_table[off++]);
- } while (--size > 0);
- continue;
- }
- done:
- ustr->unicode[outlen++] = cpu_to_be16(c);
+ ustr->unicode[outlen++] = cpu_to_be16(*dstr++);
+ } while (--dsize > 0);
+ } else
+ ustr->unicode[outlen++] = cpu_to_be16(c);
+
+ astr += size;
+ len -= size;
}
ustr->length = cpu_to_be16(outlen);
if (len > 0)
return -ENAMETOOLONG;
return 0;
}
+
+/*
+ * Hash a string to an integer as appropriate for the HFS+ filesystem.
+ * Composed unicode characters are decomposed and case-folding is performed
+ * if the appropriate bits are (un)set on the superblock.
+ */
+int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str)
+{
+ struct super_block *sb = dentry->d_sb;
+ const char *astr;
+ const u16 *dstr;
+ int casefold, decompose, size, dsize, len;
+ unsigned long hash;
+ wchar_t c;
+ u16 c2;
+
+ casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
+ decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
+ hash = init_name_hash();
+ astr = str->name;
+ len = str->len;
+ while (len > 0) {
+ size = asc2unichar(sb, astr, len, &c);
+ astr += size;
+ len -= size;
+
+ if (decompose && (dstr = decompose_unichar(c, &dsize))) {
+ do {
+ c2 = *dstr++;
+ if (!casefold || (c2 = case_fold(c2)))
+ hash = partial_name_hash(c2, hash);
+ } while (--dsize > 0);
+ } else {
+ c2 = c;
+ if (!casefold || (c2 = case_fold(c2)))
+ hash = partial_name_hash(c2, hash);
+ }
+ }
+ str->hash = end_name_hash(hash);
+
+ return 0;
+}
+
+/*
+ * Compare strings with HFS+ filename ordering.
+ * Composed unicode characters are decomposed and case-folding is performed
+ * if the appropriate bits are (un)set on the superblock.
+ */
+int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2)
+{
+ struct super_block *sb = dentry->d_sb;
+ int casefold, decompose, size;
+ int dsize1, dsize2, len1, len2;
+ const u16 *dstr1, *dstr2;
+ const char *astr1, *astr2;
+ u16 c1, c2;
+ wchar_t c;
+
+ casefold = (HFSPLUS_SB(sb).flags & HFSPLUS_SB_CASEFOLD);
+ decompose = !(HFSPLUS_SB(sb).flags & HFSPLUS_SB_NODECOMPOSE);
+ astr1 = s1->name;
+ len1 = s1->len;
+ astr2 = s2->name;
+ len2 = s2->len;
+ dsize1 = dsize2 = 0;
+ dstr1 = dstr2 = NULL;
+
+ while (len1 > 0 && len2 > 0) {
+ if (!dsize1) {
+ size = asc2unichar(sb, astr1, len1, &c);
+ astr1 += size;
+ len1 -= size;
+
+ if (!decompose || !(dstr1 = decompose_unichar(c, &dsize1))) {
+ c1 = c;
+ dstr1 = &c1;
+ dsize1 = 1;
+ }
+ }
+
+ if (!dsize2) {
+ size = asc2unichar(sb, astr2, len2, &c);
+ astr2 += size;
+ len2 -= size;
+
+ if (!decompose || !(dstr2 = decompose_unichar(c, &dsize2))) {
+ c2 = c;
+ dstr2 = &c2;
+ dsize2 = 1;
+ }
+ }
+
+ c1 = *dstr1;
+ c2 = *dstr2;
+ if (casefold) {
+ if (!(c1 = case_fold(c1))) {
+ dstr1++;
+ dsize1--;
+ continue;
+ }
+ if (!(c2 = case_fold(c2))) {
+ dstr2++;
+ dsize2--;
+ continue;
+ }
+ }
+ if (c1 < c2)
+ return -1;
+ else if (c1 > c2)
+ return 1;
+
+ dstr1++;
+ dsize1--;
+ dstr2++;
+ dsize2--;
+ }
+
+ if (len1 < len2)
+ return -1;
+ if (len1 > len2)
+ return 1;
+ return 0;
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-23 04:58:05 +0000