// SPDX-License-Identifier: GPL-2.0/* * linux/fs/hfsplus/dir.c * * Copyright (C) 2001 * Brad Boyer (flar@allandria.com) * (C) 2003 Ardis Technologies <roman@ardistech.com> * * Handling of directories */ #include <linux/errno.h>#include <linux/fs.h>#include <linux/slab.h>#include <linux/random.h>#include <linux/nls.h> #include "hfsplus_fs.h"#include "hfsplus_raw.h"#include "xattr.h" static inline void hfsplus_instantiate(struct dentry *dentry, struct inode *inode, u32 cnid){ dentry->d_fsdata = (void *)(unsigned long)cnid; d_instantiate(dentry, inode);} /* Find the entry inside dir named dentry->d_name */static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags){ struct inode *inode = NULL; struct hfs_find_data fd; struct super_block *sb; hfsplus_cat_entry entry; int err; u32 cnid, linkid = 0; u16 type; sb = dir->i_sb; dentry->d_fsdata = NULL; err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return ERR_PTR(err); err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name); if (unlikely(err < 0)) goto fail;again: err = hfsplus_brec_read_cat(&fd, &entry); if (err) { if (err == -ENOENT) { hfs_find_exit(&fd); /* No such entry */ inode = NULL; goto out; } goto fail; } type = be16_to_cpu(entry.type); if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.folder.id); dentry->d_fsdata = (void *)(unsigned long)cnid; } else if (type == HFSPLUS_FILE) { if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.file.id); if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) && entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) && HFSPLUS_SB(sb)->hidden_dir && (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)-> create_date || entry.file.create_date == HFSPLUS_I(d_inode(sb->s_root))-> create_date)) { struct qstr str; char name[32]; if (dentry->d_fsdata) { /* * We found a link pointing to another link, * so ignore it and treat it as regular file. */ cnid = (unsigned long)dentry->d_fsdata; linkid = 0; } else { dentry->d_fsdata = (void *)(unsigned long)cnid; linkid = be32_to_cpu(entry.file.permissions.dev); str.len = sprintf(name, "iNode%d", linkid); str.name = name; err = hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb)->hidden_dir->i_ino, &str); if (unlikely(err < 0)) goto fail; goto again; } } else if (!dentry->d_fsdata) dentry->d_fsdata = (void *)(unsigned long)cnid; } else { pr_err("invalid catalog entry type in lookup\n"); err = -EIO; goto fail; } hfs_find_exit(&fd); inode = hfsplus_iget(dir->i_sb, cnid); if (IS_ERR(inode)) return ERR_CAST(inode); if (S_ISREG(inode->i_mode)) HFSPLUS_I(inode)->linkid = linkid;out: return d_splice_alias(inode, dentry);fail: hfs_find_exit(&fd); return ERR_PTR(err);} static int hfsplus_readdir(struct file *file, struct dir_context *ctx){ struct inode *inode = file_inode(file); struct super_block *sb = inode->i_sb; int len, err; char *strbuf; hfsplus_cat_entry entry; struct hfs_find_data fd; struct hfsplus_readdir_data *rd; u16 type; if (file->f_pos >= inode->i_size) return 0; err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return err; strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN + 1, GFP_KERNEL); if (!strbuf) { err = -ENOMEM; goto out; } hfsplus_cat_build_key_with_cnid(sb, fd.search_key, inode->i_ino); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; if (ctx->pos == 0) { /* This is completely artificial... */ if (!dir_emit_dot(file, ctx)) goto out; ctx->pos = 1; } if (ctx->pos == 1) { if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { err = -EIO; goto out; } hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) { pr_err("bad catalog folder thread\n"); err = -EIO; goto out; } if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) { pr_err("truncated catalog thread\n"); err = -EIO; goto out; } if (!dir_emit(ctx, "..", 2, be32_to_cpu(entry.thread.parentID), DT_DIR)) goto out; ctx->pos = 2; } if (ctx->pos >= inode->i_size) goto out; rd = file->private_data; if (rd && rd->pos == ctx->pos) { memcpy(fd.search_key, &rd->key, sizeof(struct hfsplus_cat_key)); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err == -ENOENT) err = hfs_brec_goto(&fd, 1); } else { err = hfs_brec_goto(&fd, ctx->pos - 1); } if (err) goto out; for (;;) { if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) { pr_err("walked past end of dir\n"); err = -EIO; goto out; } if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { err = -EIO; goto out; } hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); len = NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN; err = hfsplus_uni2asc_str(sb, &fd.key->cat.name, strbuf, &len); if (err) goto out; if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { pr_err("small dir entry\n"); err = -EIO; goto out; } if (HFSPLUS_SB(sb)->hidden_dir && HFSPLUS_SB(sb)->hidden_dir->i_ino == be32_to_cpu(entry.folder.id)) goto next; if (!dir_emit(ctx, strbuf, len, be32_to_cpu(entry.folder.id), DT_DIR)) break; } else if (type == HFSPLUS_FILE) { u16 mode; unsigned type = DT_UNKNOWN; if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { pr_err("small file entry\n"); err = -EIO; goto out; } mode = be16_to_cpu(entry.file.permissions.mode); if (S_ISREG(mode)) type = DT_REG; else if (S_ISLNK(mode)) type = DT_LNK; else if (S_ISFIFO(mode)) type = DT_FIFO; else if (S_ISCHR(mode)) type = DT_CHR; else if (S_ISBLK(mode)) type = DT_BLK; else if (S_ISSOCK(mode)) type = DT_SOCK; if (!dir_emit(ctx, strbuf, len, be32_to_cpu(entry.file.id), type)) break; } else { pr_err("bad catalog entry type\n"); err = -EIO; goto out; }next: ctx->pos++; if (ctx->pos >= inode->i_size) goto out; err = hfs_brec_goto(&fd, 1); if (err) goto out; } if (!rd) { rd = kmalloc_obj(struct hfsplus_readdir_data); if (!rd) { err = -ENOMEM; goto out; } file->private_data = rd; } rd->pos = ctx->pos; memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));out: kfree(strbuf); hfs_find_exit(&fd); return err;} static int hfsplus_dir_release(struct inode *inode, struct file *file){ kfree(file->private_data); return 0;} static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, struct dentry *dst_dentry){ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb); struct inode *inode = d_inode(src_dentry); struct inode *src_dir = d_inode(src_dentry->d_parent); struct qstr str; char name[32]; u32 cnid, id; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; if (!S_ISREG(inode->i_mode)) return -EPERM; hfs_dbg("src_dir->i_ino %llu, dst_dir->i_ino %llu, inode->i_ino %llu\n", src_dir->i_ino, dst_dir->i_ino, inode->i_ino); mutex_lock(&sbi->vh_mutex); if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) { for (;;) { get_random_bytes(&id, sizeof(cnid)); id &= 0x3fffffff; str.name = name; str.len = sprintf(name, "iNode%d", id); res = hfsplus_rename_cat(inode->i_ino, src_dir, &src_dentry->d_name, sbi->hidden_dir, &str); if (!res) break; if (res != -EEXIST) goto out; } HFSPLUS_I(inode)->linkid = id; cnid = sbi->next_cnid++; src_dentry->d_fsdata = (void *)(unsigned long)cnid; res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode); if (res) /* panic? */ goto out; sbi->file_count++; } cnid = sbi->next_cnid++; res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode); if (res) goto out; inc_nlink(inode); hfsplus_instantiate(dst_dentry, inode, cnid); ihold(inode); inode_set_ctime_current(inode); mark_inode_dirty(inode); sbi->file_count++; hfsplus_mark_mdb_dirty(dst_dir->i_sb); res = hfsplus_cat_write_inode(src_dir); if (res) goto out; res = hfsplus_cat_write_inode(dst_dir); if (res) goto out; res = hfsplus_cat_write_inode(sbi->hidden_dir); if (res) goto out; res = hfsplus_cat_write_inode(inode); out: mutex_unlock(&sbi->vh_mutex); return res;} static int hfsplus_unlink(struct inode *dir, struct dentry *dentry){ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode = d_inode(dentry); struct qstr str; char name[32]; u32 cnid; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; hfs_dbg("dir->i_ino %llu, inode->i_ino %llu\n", dir->i_ino, inode->i_ino); mutex_lock(&sbi->vh_mutex); cnid = (u32)(unsigned long)dentry->d_fsdata; if (inode->i_ino == cnid && atomic_read(&HFSPLUS_I(inode)->opencnt)) { str.name = name; str.len = sprintf(name, "temp%llu", inode->i_ino); res = hfsplus_rename_cat(inode->i_ino, dir, &dentry->d_name, sbi->hidden_dir, &str); if (!res) { inode->i_flags |= S_DEAD; drop_nlink(inode); } goto out; } res = hfsplus_delete_cat(cnid, dir, &dentry->d_name); if (res) goto out; if (inode->i_nlink > 0) drop_nlink(inode); if (inode->i_ino == cnid) clear_nlink(inode); if (!inode->i_nlink) { if (inode->i_ino != cnid) { sbi->file_count--; if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) { res = hfsplus_delete_cat(inode->i_ino, sbi->hidden_dir, NULL); if (!res) hfsplus_delete_inode(inode); } else inode->i_flags |= S_DEAD; } else hfsplus_delete_inode(inode); } else sbi->file_count--; inode_set_ctime_current(inode); mark_inode_dirty(inode);out: if (!res) { res = hfsplus_cat_write_inode(dir); if (!res) { res = hfsplus_cat_write_inode(sbi->hidden_dir); if (!res) res = hfsplus_cat_write_inode(inode); } } mutex_unlock(&sbi->vh_mutex); return res;} static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry){ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode = d_inode(dentry); int res; if (inode->i_size != 2) return -ENOTEMPTY; mutex_lock(&sbi->vh_mutex); res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); if (res) goto out; clear_nlink(inode); inode_set_ctime_current(inode); hfsplus_delete_inode(inode); mark_inode_dirty(inode); res = hfsplus_cat_write_inode(dir);out: mutex_unlock(&sbi->vh_mutex); return res;} static int hfsplus_symlink(struct mnt_idmap *idmap, struct inode *dir, struct dentry *dentry, const char *symname){ struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode; int res = -ENOMEM; mutex_lock(&sbi->vh_mutex); inode = hfsplus_new_inode(dir->i_sb, dir, S_IFLNK | S_IRWXUGO); if (!inode) goto out; hfs_dbg("dir->i_ino %llu, inode->i_ino %llu\n", dir->i_ino, inode->i_ino); res = page_symlink(inode, symname, strlen(symname) + 1); if (res) goto out_err; res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) goto out_err; res = hfsplus_init_security(inode, dir, &dentry->d_name); if (res == -EOPNOTSUPP) res = 0; /* Operation is not supported. */ else if (res) { /* Try to delete anyway without error analysis. */ hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); goto out_err; } hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); res = hfsplus_cat_write_inode(dir); if (res) goto out;Lines 1–500 of 643. 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// SPDX-License-Identifier: GPL-2.0 /* * linux/fs/hfsplus/dir.c * * Copyright (C) 2001 * Brad Boyer (flar@allandria.com) * (C) 2003 Ardis Technologies <roman@ardistech.com> * * Handling of directories */ #include <linux/errno.h> #include <linux/fs.h> #include <linux/slab.h> #include <linux/random.h> #include <linux/nls.h> #include "hfsplus_fs.h" #include "hfsplus_raw.h" #include "xattr.h" static inline void hfsplus_instantiate(struct dentry *dentry, struct inode *inode, u32 cnid) { dentry->d_fsdata = (void *)(unsigned long)cnid; d_instantiate(dentry, inode); } /* Find the entry inside dir named dentry->d_name */ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { struct inode *inode = NULL; struct hfs_find_data fd; struct super_block *sb; hfsplus_cat_entry entry; int err; u32 cnid, linkid = 0; u16 type; sb = dir->i_sb; dentry->d_fsdata = NULL; err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return ERR_PTR(err); err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name); if (unlikely(err < 0)) goto fail; again: err = hfsplus_brec_read_cat(&fd, &entry); if (err) { if (err == -ENOENT) { hfs_find_exit(&fd); /* No such entry */ inode = NULL; goto out; } goto fail; } type = be16_to_cpu(entry.type); if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.folder.id); dentry->d_fsdata = (void *)(unsigned long)cnid; } else if (type == HFSPLUS_FILE) { if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.file.id); if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) && entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) && HFSPLUS_SB(sb)->hidden_dir && (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)-> create_date || entry.file.create_date == HFSPLUS_I(d_inode(sb->s_root))-> create_date)) { struct qstr str; char name[32]; if (dentry->d_fsdata) { /* * We found a link pointing to another link, * so ignore it and treat it as regular file. */ cnid = (unsigned long)dentry->d_fsdata; linkid = 0; } else { dentry->d_fsdata = (void *)(unsigned long)cnid; linkid = be32_to_cpu(entry.file.permissions.dev); str.len = sprintf(name, "iNode%d", linkid); str.name = name; err = hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb)->hidden_dir->i_ino, &str); if (unlikely(err < 0)) goto fail; goto again; } } else if (!dentry->d_fsdata) dentry->d_fsdata = (void *)(unsigned long)cnid; } else { pr_err("invalid catalog entry type in lookup\n"); err = -EIO; goto fail; } hfs_find_exit(&fd); inode = hfsplus_iget(dir->i_sb, cnid); if (IS_ERR(inode)) return ERR_CAST(inode); if (S_ISREG(inode->i_mode)) HFSPLUS_I(inode)->linkid = linkid; out: return d_splice_alias(inode, dentry); fail: hfs_find_exit(&fd); return ERR_PTR(err); } static int hfsplus_readdir(struct file *file, struct dir_context *ctx) { struct inode *inode = file_inode(file); struct super_block *sb = inode->i_sb; int len, err; char *strbuf; hfsplus_cat_entry entry; struct hfs_find_data fd; struct hfsplus_readdir_data *rd; u16 type; if (file->f_pos >= inode->i_size) return 0; err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return err; strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN + 1, GFP_KERNEL); if (!strbuf) { err = -ENOMEM; goto out; } hfsplus_cat_build_key_with_cnid(sb, fd.search_key, inode->i_ino); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; if (ctx->pos == 0) { /* This is completely artificial... */ if (!dir_emit_dot(file, ctx)) goto out; ctx->pos = 1; } if (ctx->pos == 1) { if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { err = -EIO; goto out; } hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) { pr_err("bad catalog folder thread\n"); err = -EIO; goto out; } if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) { pr_err("truncated catalog thread\n"); err = -EIO; goto out; } if (!dir_emit(ctx, "..", 2, be32_to_cpu(entry.thread.parentID), DT_DIR)) goto out; ctx->pos = 2; } if (ctx->pos >= inode->i_size) goto out; rd = file->private_data; if (rd && rd->pos == ctx->pos) { memcpy(fd.search_key, &rd->key, sizeof(struct hfsplus_cat_key)); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err == -ENOENT) err = hfs_brec_goto(&fd, 1); } else { err = hfs_brec_goto(&fd, ctx->pos - 1); } if (err) goto out; for (;;) { if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) { pr_err("walked past end of dir\n"); err = -EIO; goto out; } if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { err = -EIO; goto out; } hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); len = NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN; err = hfsplus_uni2asc_str(sb, &fd.key->cat.name, strbuf, &len); if (err) goto out; if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { pr_err("small dir entry\n"); err = -EIO; goto out; } if (HFSPLUS_SB(sb)->hidden_dir && HFSPLUS_SB(sb)->hidden_dir->i_ino == be32_to_cpu(entry.folder.id)) goto next; if (!dir_emit(ctx, strbuf, len, be32_to_cpu(entry.folder.id), DT_DIR)) break; } else if (type == HFSPLUS_FILE) { u16 mode; unsigned type = DT_UNKNOWN; if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { pr_err("small file entry\n"); err = -EIO; goto out; } mode = be16_to_cpu(entry.file.permissions.mode); if (S_ISREG(mode)) type = DT_REG; else if (S_ISLNK(mode)) type = DT_LNK; else if (S_ISFIFO(mode)) type = DT_FIFO; else if (S_ISCHR(mode)) type = DT_CHR; else if (S_ISBLK(mode)) type = DT_BLK; else if (S_ISSOCK(mode)) type = DT_SOCK; if (!dir_emit(ctx, strbuf, len, be32_to_cpu(entry.file.id), type)) break; } else { pr_err("bad catalog entry type\n"); err = -EIO; goto out; } next: ctx->pos++; if (ctx->pos >= inode->i_size) goto out; err = hfs_brec_goto(&fd, 1); if (err) goto out; } if (!rd) { rd = kmalloc_obj(struct hfsplus_readdir_data); if (!rd) { err = -ENOMEM; goto out; } file->private_data = rd; } rd->pos = ctx->pos; memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key)); out: kfree(strbuf); hfs_find_exit(&fd); return err; } static int hfsplus_dir_release(struct inode *inode, struct file *file) { kfree(file->private_data); return 0; } static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, struct dentry *dst_dentry) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb); struct inode *inode = d_inode(src_dentry); struct inode *src_dir = d_inode(src_dentry->d_parent); struct qstr str; char name[32]; u32 cnid, id; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; if (!S_ISREG(inode->i_mode)) return -EPERM; hfs_dbg("src_dir->i_ino %llu, dst_dir->i_ino %llu, inode->i_ino %llu\n", src_dir->i_ino, dst_dir->i_ino, inode->i_ino); mutex_lock(&sbi->vh_mutex); if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) { for (;;) { get_random_bytes(&id, sizeof(cnid)); id &= 0x3fffffff; str.name = name; str.len = sprintf(name, "iNode%d", id); res = hfsplus_rename_cat(inode->i_ino, src_dir, &src_dentry->d_name, sbi->hidden_dir, &str); if (!res) break; if (res != -EEXIST) goto out; } HFSPLUS_I(inode)->linkid = id; cnid = sbi->next_cnid++; src_dentry->d_fsdata = (void *)(unsigned long)cnid; res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode); if (res) /* panic? */ goto out; sbi->file_count++; } cnid = sbi->next_cnid++; res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode); if (res) goto out; inc_nlink(inode); hfsplus_instantiate(dst_dentry, inode, cnid); ihold(inode); inode_set_ctime_current(inode); mark_inode_dirty(inode); sbi->file_count++; hfsplus_mark_mdb_dirty(dst_dir->i_sb); res = hfsplus_cat_write_inode(src_dir); if (res) goto out; res = hfsplus_cat_write_inode(dst_dir); if (res) goto out; res = hfsplus_cat_write_inode(sbi->hidden_dir); if (res) goto out; res = hfsplus_cat_write_inode(inode); out: mutex_unlock(&sbi->vh_mutex); return res; } static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode = d_inode(dentry); struct qstr str; char name[32]; u32 cnid; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; hfs_dbg("dir->i_ino %llu, inode->i_ino %llu\n", dir->i_ino, inode->i_ino); mutex_lock(&sbi->vh_mutex); cnid = (u32)(unsigned long)dentry->d_fsdata; if (inode->i_ino == cnid && atomic_read(&HFSPLUS_I(inode)->opencnt)) { str.name = name; str.len = sprintf(name, "temp%llu", inode->i_ino); res = hfsplus_rename_cat(inode->i_ino, dir, &dentry->d_name, sbi->hidden_dir, &str); if (!res) { inode->i_flags |= S_DEAD; drop_nlink(inode); } goto out; } res = hfsplus_delete_cat(cnid, dir, &dentry->d_name); if (res) goto out; if (inode->i_nlink > 0) drop_nlink(inode); if (inode->i_ino == cnid) clear_nlink(inode); if (!inode->i_nlink) { if (inode->i_ino != cnid) { sbi->file_count--; if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) { res = hfsplus_delete_cat(inode->i_ino, sbi->hidden_dir, NULL); if (!res) hfsplus_delete_inode(inode); } else inode->i_flags |= S_DEAD; } else hfsplus_delete_inode(inode); } else sbi->file_count--; inode_set_ctime_current(inode); mark_inode_dirty(inode); out: if (!res) { res = hfsplus_cat_write_inode(dir); if (!res) { res = hfsplus_cat_write_inode(sbi->hidden_dir); if (!res) res = hfsplus_cat_write_inode(inode); } } mutex_unlock(&sbi->vh_mutex); return res; } static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode = d_inode(dentry); int res; if (inode->i_size != 2) return -ENOTEMPTY; mutex_lock(&sbi->vh_mutex); res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); if (res) goto out; clear_nlink(inode); inode_set_ctime_current(inode); hfsplus_delete_inode(inode); mark_inode_dirty(inode); res = hfsplus_cat_write_inode(dir); out: mutex_unlock(&sbi->vh_mutex); return res; } static int hfsplus_symlink(struct mnt_idmap *idmap, struct inode *dir, struct dentry *dentry, const char *symname) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); struct inode *inode; int res = -ENOMEM; mutex_lock(&sbi->vh_mutex); inode = hfsplus_new_inode(dir->i_sb, dir, S_IFLNK | S_IRWXUGO); if (!inode) goto out; hfs_dbg("dir->i_ino %llu, inode->i_ino %llu\n", dir->i_ino, inode->i_ino); res = page_symlink(inode, symname, strlen(symname) + 1); if (res) goto out_err; res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) goto out_err; res = hfsplus_init_security(inode, dir, &dentry->d_name); if (res == -EOPNOTSUPP) res = 0; /* Operation is not supported. */ else if (res) { /* Try to delete anyway without error analysis. */ hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); goto out_err; } hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); res = hfsplus_cat_write_inode(dir); if (res) goto out;