diff options
Diffstat (limited to 'fs/hfsplus/inode.c')
-rw-r--r-- | fs/hfsplus/inode.c | 131 |
1 files changed, 96 insertions, 35 deletions
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 94bd83b36644..aeab83ed1c9c 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -17,14 +17,15 @@ #include <linux/sched.h> #include <linux/cred.h> #include <linux/uio.h> +#include <linux/fileattr.h> #include "hfsplus_fs.h" #include "hfsplus_raw.h" #include "xattr.h" -static int hfsplus_readpage(struct file *file, struct page *page) +static int hfsplus_read_folio(struct file *file, struct folio *folio) { - return block_read_full_page(page, hfsplus_get_block); + return block_read_full_folio(folio, hfsplus_get_block); } static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) @@ -42,14 +43,13 @@ static void hfsplus_write_failed(struct address_space *mapping, loff_t to) } } -static int hfsplus_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata) +int hfsplus_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, struct page **pagep, void **fsdata) { int ret; *pagep = NULL; - ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata, hfsplus_get_block, &HFSPLUS_I(mapping->host)->phys_size); if (unlikely(ret)) @@ -63,14 +63,15 @@ static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) return generic_block_bmap(mapping, block, hfsplus_get_block); } -static int hfsplus_releasepage(struct page *page, gfp_t mask) +static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) { - struct inode *inode = page->mapping->host; + struct inode *inode = folio->mapping->host; struct super_block *sb = inode->i_sb; struct hfs_btree *tree; struct hfs_bnode *node; u32 nidx; - int i, res = 1; + int i; + bool res = true; switch (inode->i_ino) { case HFSPLUS_EXT_CNID: @@ -84,26 +85,26 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask) break; default: BUG(); - return 0; + return false; } if (!tree) - return 0; + return false; if (tree->node_size >= PAGE_SIZE) { - nidx = page->index >> + nidx = folio->index >> (tree->node_size_shift - PAGE_SHIFT); spin_lock(&tree->hash_lock); node = hfs_bnode_findhash(tree, nidx); if (!node) ; else if (atomic_read(&node->refcnt)) - res = 0; + res = false; if (res && node) { hfs_bnode_unhash(node); hfs_bnode_free(node); } spin_unlock(&tree->hash_lock); } else { - nidx = page->index << + nidx = folio->index << (PAGE_SHIFT - tree->node_size_shift); i = 1 << (PAGE_SHIFT - tree->node_size_shift); spin_lock(&tree->hash_lock); @@ -112,7 +113,7 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask) if (!node) continue; if (atomic_read(&node->refcnt)) { - res = 0; + res = false; break; } hfs_bnode_unhash(node); @@ -120,7 +121,7 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask) } while (--i && nidx < tree->node_count); spin_unlock(&tree->hash_lock); } - return res ? try_to_free_buffers(page) : 0; + return res ? try_to_free_buffers(folio) : false; } static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) @@ -155,16 +156,20 @@ static int hfsplus_writepages(struct address_space *mapping, } const struct address_space_operations hfsplus_btree_aops = { - .readpage = hfsplus_readpage, + .dirty_folio = block_dirty_folio, + .invalidate_folio = block_invalidate_folio, + .read_folio = hfsplus_read_folio, .writepage = hfsplus_writepage, .write_begin = hfsplus_write_begin, .write_end = generic_write_end, .bmap = hfsplus_bmap, - .releasepage = hfsplus_releasepage, + .release_folio = hfsplus_release_folio, }; const struct address_space_operations hfsplus_aops = { - .readpage = hfsplus_readpage, + .dirty_folio = block_dirty_folio, + .invalidate_folio = block_invalidate_folio, + .read_folio = hfsplus_read_folio, .writepage = hfsplus_writepage, .write_begin = hfsplus_write_begin, .write_end = generic_write_end, @@ -241,12 +246,13 @@ static int hfsplus_file_release(struct inode *inode, struct file *file) return 0; } -static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) +static int hfsplus_setattr(struct user_namespace *mnt_userns, + struct dentry *dentry, struct iattr *attr) { struct inode *inode = d_inode(dentry); int error; - error = setattr_prepare(dentry, attr); + error = setattr_prepare(&init_user_ns, dentry, attr); if (error) return error; @@ -264,18 +270,24 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) inode->i_mtime = inode->i_ctime = current_time(inode); } - setattr_copy(inode, attr); + setattr_copy(&init_user_ns, inode, attr); mark_inode_dirty(inode); return 0; } -int hfsplus_getattr(const struct path *path, struct kstat *stat, - u32 request_mask, unsigned int query_flags) +int hfsplus_getattr(struct user_namespace *mnt_userns, const struct path *path, + struct kstat *stat, u32 request_mask, + unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + if (request_mask & STATX_BTIME) { + stat->result_mask |= STATX_BTIME; + stat->btime = hfsp_mt2ut(hip->create_date); + } + if (inode->i_flags & S_APPEND) stat->attributes |= STATX_ATTR_APPEND; if (inode->i_flags & S_IMMUTABLE) @@ -286,7 +298,7 @@ int hfsplus_getattr(const struct path *path, struct kstat *stat, stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP; - generic_fillattr(inode, stat); + generic_fillattr(&init_user_ns, inode, stat); return 0; } @@ -340,7 +352,7 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, } if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) - blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); + blkdev_issue_flush(inode->i_sb->s_bdev); inode_unlock(inode); @@ -351,6 +363,8 @@ static const struct inode_operations hfsplus_file_inode_operations = { .setattr = hfsplus_setattr, .getattr = hfsplus_getattr, .listxattr = hfsplus_listxattr, + .fileattr_get = hfsplus_fileattr_get, + .fileattr_set = hfsplus_fileattr_set, }; static const struct file_operations hfsplus_file_operations = { @@ -376,7 +390,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, return NULL; inode->i_ino = sbi->next_cnid++; - inode_init_owner(inode, dir, mode); + inode_init_owner(&init_user_ns, inode, dir, mode); set_nlink(inode, 1); inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); @@ -497,8 +511,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) if (type == HFSPLUS_FOLDER) { struct hfsplus_cat_folder *folder = &entry.folder; - if (fd->entrylength < sizeof(struct hfsplus_cat_folder)) - /* panic? */; + WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_folder)); hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, sizeof(struct hfsplus_cat_folder)); hfsplus_get_perms(inode, &folder->permissions, 1); @@ -518,8 +531,7 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) } else if (type == HFSPLUS_FILE) { struct hfsplus_cat_file *file = &entry.file; - if (fd->entrylength < sizeof(struct hfsplus_cat_file)) - /* panic? */; + WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_file)); hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, sizeof(struct hfsplus_cat_file)); @@ -576,8 +588,7 @@ int hfsplus_cat_write_inode(struct inode *inode) if (S_ISDIR(main_inode->i_mode)) { struct hfsplus_cat_folder *folder = &entry.folder; - if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) - /* panic? */; + WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_folder)); hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_folder)); /* simple node checks? */ @@ -602,8 +613,7 @@ int hfsplus_cat_write_inode(struct inode *inode) } else { struct hfsplus_cat_file *file = &entry.file; - if (fd.entrylength < sizeof(struct hfsplus_cat_file)) - /* panic? */; + WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_file)); hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_file)); hfsplus_inode_write_fork(inode, &file->data_fork); @@ -626,3 +636,54 @@ out: hfs_find_exit(&fd); return 0; } + +int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) +{ + struct inode *inode = d_inode(dentry); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + unsigned int flags = 0; + + if (inode->i_flags & S_IMMUTABLE) + flags |= FS_IMMUTABLE_FL; + if (inode->i_flags & S_APPEND) + flags |= FS_APPEND_FL; + if (hip->userflags & HFSPLUS_FLG_NODUMP) + flags |= FS_NODUMP_FL; + + fileattr_fill_flags(fa, flags); + + return 0; +} + +int hfsplus_fileattr_set(struct user_namespace *mnt_userns, + struct dentry *dentry, struct fileattr *fa) +{ + struct inode *inode = d_inode(dentry); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + unsigned int new_fl = 0; + + if (fileattr_has_fsx(fa)) + return -EOPNOTSUPP; + + /* don't silently ignore unsupported ext2 flags */ + if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) + return -EOPNOTSUPP; + + if (fa->flags & FS_IMMUTABLE_FL) + new_fl |= S_IMMUTABLE; + + if (fa->flags & FS_APPEND_FL) + new_fl |= S_APPEND; + + inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); + + if (fa->flags & FS_NODUMP_FL) + hip->userflags |= HFSPLUS_FLG_NODUMP; + else + hip->userflags &= ~HFSPLUS_FLG_NODUMP; + + inode->i_ctime = current_time(inode); + mark_inode_dirty(inode); + + return 0; +} |