From cafffc50ad9b16fb4c8f51ceb6d7998490bcbb09 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Wed, 24 Jun 2020 18:03:02 +0200 Subject: fs: btrfs: Rename path resolve related functions to avoid name conflicts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since the old code is using __btrfs_path/__btrfs_root which is different from the regular extent buffer based one, we add "__" prefix for the old implementation to avoid name conflicts for the incoming crossport. Signed-off-by: Qu Wenruo Reviewed-by: Marek Behún --- fs/btrfs/btrfs.c | 12 ++++++------ fs/btrfs/btrfs.h | 10 +++++----- fs/btrfs/compat.h | 3 +++ fs/btrfs/ctree.h | 7 +++++++ fs/btrfs/dir-item.c | 12 ++++++------ fs/btrfs/inode.c | 28 ++++++++++++++-------------- fs/btrfs/subvolume.c | 4 ++-- 7 files changed, 43 insertions(+), 33 deletions(-) (limited to 'fs/btrfs') diff --git a/fs/btrfs/btrfs.c b/fs/btrfs/btrfs.c index 2bd2ec9ed9..c967c114cc 100644 --- a/fs/btrfs/btrfs.c +++ b/fs/btrfs/btrfs.c @@ -35,7 +35,7 @@ static int readdir_callback(const struct __btrfs_root *root, char filetime[32], *target = NULL; time_t mtime; - if (btrfs_lookup_inode(root, (struct btrfs_key *)&item->location, + if (__btrfs_lookup_inode(root, (struct btrfs_key *)&item->location, &inode, NULL)) { printf("%s: Cannot find inode item for directory entry %.*s!\n", __func__, item->name_len, name); @@ -49,7 +49,7 @@ static int readdir_callback(const struct __btrfs_root *root, target = malloc(min(inode.size + 1, (u64) btrfs_info.sb.sectorsize)); - if (target && btrfs_readlink(root, item->location.objectid, + if (target && __btrfs_readlink(root, item->location.objectid, target)) { free(target); target = NULL; @@ -129,7 +129,7 @@ int btrfs_ls(const char *path) u64 inr; u8 type; - inr = btrfs_lookup_path(&root, root.root_dirid, path, &type, NULL, 40); + inr = __btrfs_lookup_path(&root, root.root_dirid, path, &type, NULL, 40); if (inr == -1ULL) { printf("Cannot lookup path %s\n", path); @@ -155,7 +155,7 @@ int btrfs_exists(const char *file) u64 inr; u8 type; - inr = btrfs_lookup_path(&root, root.root_dirid, file, &type, NULL, 40); + inr = __btrfs_lookup_path(&root, root.root_dirid, file, &type, NULL, 40); return (inr != -1ULL && type == BTRFS_FT_REG_FILE); } @@ -167,7 +167,7 @@ int btrfs_size(const char *file, loff_t *size) u64 inr; u8 type; - inr = btrfs_lookup_path(&root, root.root_dirid, file, &type, &inode, + inr = __btrfs_lookup_path(&root, root.root_dirid, file, &type, &inode, 40); if (inr == -1ULL) { @@ -192,7 +192,7 @@ int btrfs_read(const char *file, void *buf, loff_t offset, loff_t len, u64 inr, rd; u8 type; - inr = btrfs_lookup_path(&root, root.root_dirid, file, &type, &inode, + inr = __btrfs_lookup_path(&root, root.root_dirid, file, &type, &inode, 40); if (inr == -1ULL) { diff --git a/fs/btrfs/btrfs.h b/fs/btrfs/btrfs.h index a52ff942f2..e8197391a2 100644 --- a/fs/btrfs/btrfs.h +++ b/fs/btrfs/btrfs.h @@ -46,7 +46,7 @@ int btrfs_read_superblock(void); typedef int (*btrfs_readdir_callback_t)(const struct __btrfs_root *, struct btrfs_dir_item *); -int btrfs_lookup_dir_item(const struct __btrfs_root *, u64, const char *, int, +int __btrfs_lookup_dir_item(const struct __btrfs_root *, u64, const char *, int, struct btrfs_dir_item *); int btrfs_readdir(const struct __btrfs_root *, u64, btrfs_readdir_callback_t); @@ -55,12 +55,12 @@ int btrfs_find_root(u64, struct __btrfs_root *, struct btrfs_root_item *); u64 btrfs_lookup_root_ref(u64, struct btrfs_root_ref *, char *); /* inode.c */ -u64 btrfs_lookup_inode_ref(struct __btrfs_root *, u64, struct btrfs_inode_ref *, +u64 __btrfs_lookup_inode_ref(struct __btrfs_root *, u64, struct btrfs_inode_ref *, char *); -int btrfs_lookup_inode(const struct __btrfs_root *, struct btrfs_key *, +int __btrfs_lookup_inode(const struct __btrfs_root *, struct btrfs_key *, struct btrfs_inode_item *, struct __btrfs_root *); -int btrfs_readlink(const struct __btrfs_root *, u64, char *); -u64 btrfs_lookup_path(struct __btrfs_root *, u64, const char *, u8 *, +int __btrfs_readlink(const struct __btrfs_root *, u64, char *); +u64 __btrfs_lookup_path(struct __btrfs_root *, u64, const char *, u8 *, struct btrfs_inode_item *, int); u64 btrfs_file_read(const struct __btrfs_root *, u64, u64, u64, char *); diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h index 52de9db3d0..dbb3395192 100644 --- a/fs/btrfs/compat.h +++ b/fs/btrfs/compat.h @@ -16,6 +16,9 @@ #define BTRFS_UUID_UNPARSED_SIZE 37 +/* No so have to define it here */ +#define XATTR_NAME_MAX 255 + /* * Macros to generate set/get funcs for the struct fields * assume there is a lefoo_to_cpu for every type, so lets make a simple diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b050b5844d..d635b0814e 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1279,6 +1279,13 @@ size_t btrfs_super_num_csums(void); int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct btrfs_root_item *item, struct btrfs_key *key); +/* dir-item.c */ +struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct btrfs_path *path, u64 dir, + const char *name, int name_len, + int mod); + /* ctree.c */ int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); enum btrfs_tree_block_status diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c index 756918df2e..aea621c72b 100644 --- a/fs/btrfs/dir-item.c +++ b/fs/btrfs/dir-item.c @@ -8,7 +8,7 @@ #include "btrfs.h" #include "disk-io.h" -static int verify_dir_item(struct btrfs_dir_item *item, u32 start, u32 total) +static int __verify_dir_item(struct btrfs_dir_item *item, u32 start, u32 total) { u16 max_len = BTRFS_NAME_LEN; u32 end; @@ -32,7 +32,7 @@ static int verify_dir_item(struct btrfs_dir_item *item, u32 start, u32 total) } static struct btrfs_dir_item * -btrfs_match_dir_item_name(struct __btrfs_path *path, const char *name, +__btrfs_match_dir_item_name(struct __btrfs_path *path, const char *name, int name_len) { struct btrfs_dir_item *item; @@ -48,7 +48,7 @@ btrfs_match_dir_item_name(struct __btrfs_path *path, const char *name, this_len = sizeof(*item) + item->name_len + item->data_len; name_ptr = (const char *) (item + 1); - if (verify_dir_item(item, cur, total_len)) + if (__verify_dir_item(item, cur, total_len)) return NULL; if (item->name_len == name_len && !memcmp(name_ptr, name, name_len)) @@ -61,7 +61,7 @@ btrfs_match_dir_item_name(struct __btrfs_path *path, const char *name, return NULL; } -int btrfs_lookup_dir_item(const struct __btrfs_root *root, u64 dir, +int __btrfs_lookup_dir_item(const struct __btrfs_root *root, u64 dir, const char *name, int name_len, struct btrfs_dir_item *item) { @@ -79,7 +79,7 @@ int btrfs_lookup_dir_item(const struct __btrfs_root *root, u64 dir, if (btrfs_comp_keys_type(&key, btrfs_path_leaf_key(&path))) goto out; - res = btrfs_match_dir_item_name(&path, name, name_len); + res = __btrfs_match_dir_item_name(&path, name, name_len); if (res) *item = *res; out: @@ -110,7 +110,7 @@ int btrfs_readdir(const struct __btrfs_root *root, u64 dir, item = btrfs_path_item_ptr(&path, struct btrfs_dir_item); btrfs_dir_item_to_cpu(item); - if (verify_dir_item(item, 0, sizeof(*item) + item->name_len)) + if (__verify_dir_item(item, 0, sizeof(*item) + item->name_len)) continue; if (item->type == BTRFS_FT_XATTR) continue; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index be385d8a3f..eb34f546b5 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8,7 +8,7 @@ #include "btrfs.h" #include -u64 btrfs_lookup_inode_ref(struct __btrfs_root *root, u64 inr, +u64 __btrfs_lookup_inode_ref(struct __btrfs_root *root, u64 inr, struct btrfs_inode_ref *refp, char *name) { struct __btrfs_path path; @@ -44,7 +44,7 @@ out: return res; } -int btrfs_lookup_inode(const struct __btrfs_root *root, +int __btrfs_lookup_inode(const struct __btrfs_root *root, struct btrfs_key *location, struct btrfs_inode_item *item, struct __btrfs_root *new_root) @@ -83,7 +83,7 @@ out: return res; } -int btrfs_readlink(const struct __btrfs_root *root, u64 inr, char *target) +int __btrfs_readlink(const struct __btrfs_root *root, u64 inr, char *target) { struct __btrfs_path path; struct btrfs_key key; @@ -137,7 +137,7 @@ out: /* inr must be a directory (for regular files with multiple hard links this function returns only one of the parents of the file) */ -static u64 get_parent_inode(struct __btrfs_root *root, u64 inr, +static u64 __get_parent_inode(struct __btrfs_root *root, u64 inr, struct btrfs_inode_item *inode_item) { struct btrfs_key key; @@ -164,14 +164,14 @@ static u64 get_parent_inode(struct __btrfs_root *root, u64 inr, key.type = BTRFS_INODE_ITEM_KEY; key.offset = 0; - if (btrfs_lookup_inode(root, &key, inode_item, NULL)) + if (__btrfs_lookup_inode(root, &key, inode_item, NULL)) return -1ULL; } return inr; } - res = btrfs_lookup_inode_ref(root, inr, NULL, NULL); + res = __btrfs_lookup_inode_ref(root, inr, NULL, NULL); if (res == -1ULL) return -1ULL; @@ -180,7 +180,7 @@ static u64 get_parent_inode(struct __btrfs_root *root, u64 inr, key.type = BTRFS_INODE_ITEM_KEY; key.offset = 0; - if (btrfs_lookup_inode(root, &key, inode_item, NULL)) + if (__btrfs_lookup_inode(root, &key, inode_item, NULL)) return -1ULL; } @@ -209,7 +209,7 @@ static inline const char *skip_current_directories(const char *cur) return cur; } -u64 btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, +u64 __btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, u8 *type_p, struct btrfs_inode_item *inode_item_p, int symlink_limit) { @@ -239,7 +239,7 @@ u64 btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, if (len == 2 && cur[0] == '.' && cur[1] == '.') { cur += 2; - inr = get_parent_inode(root, inr, &inode_item); + inr = __get_parent_inode(root, inr, &inode_item); if (inr == -1ULL) return -1ULL; @@ -250,12 +250,12 @@ u64 btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, if (!*cur) break; - if (btrfs_lookup_dir_item(root, inr, cur, len, &item)) + if (__btrfs_lookup_dir_item(root, inr, cur, len, &item)) return -1ULL; type = item.type; have_inode = 1; - if (btrfs_lookup_inode(root, (struct btrfs_key *)&item.location, + if (__btrfs_lookup_inode(root, (struct btrfs_key *)&item.location, &inode_item, root)) return -1ULL; @@ -272,13 +272,13 @@ u64 btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, if (!target) return -1ULL; - if (btrfs_readlink(root, item.location.objectid, + if (__btrfs_readlink(root, item.location.objectid, target)) { free(target); return -1ULL; } - inr = btrfs_lookup_path(root, inr, target, &type, + inr = __btrfs_lookup_path(root, inr, target, &type, &inode_item, symlink_limit - 1); free(target); @@ -307,7 +307,7 @@ u64 btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path, key.type = BTRFS_INODE_ITEM_KEY; key.offset = 0; - if (btrfs_lookup_inode(root, &key, &inode_item, NULL)) + if (__btrfs_lookup_inode(root, &key, &inode_item, NULL)) return -1ULL; } diff --git a/fs/btrfs/subvolume.c b/fs/btrfs/subvolume.c index 72b847b940..0e72577d0d 100644 --- a/fs/btrfs/subvolume.c +++ b/fs/btrfs/subvolume.c @@ -39,7 +39,7 @@ static int get_subvol_name(u64 subvolid, char *name, int max_len) dir = rref.dirid; while (dir != BTRFS_FIRST_FREE_OBJECTID) { - dir = btrfs_lookup_inode_ref(&root, dir, &iref, tmp); + dir = __btrfs_lookup_inode_ref(&root, dir, &iref, tmp); if (dir == -1ULL) return -1; @@ -71,7 +71,7 @@ u64 btrfs_get_default_subvol_objectid(void) { struct btrfs_dir_item item; - if (btrfs_lookup_dir_item(&btrfs_info.tree_root, + if (__btrfs_lookup_dir_item(&btrfs_info.tree_root, btrfs_info.sb.root_dir_objectid, "default", 7, &item)) return BTRFS_FS_TREE_OBJECTID; -- cgit v1.2.3