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Diffstat (limited to 'fs/hfsplus/ioctl.c')
-rw-r--r--fs/hfsplus/ioctl.c157
1 files changed, 45 insertions, 112 deletions
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 40a85a3ded6..d3ff5cc317d 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -16,19 +16,55 @@
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/sched.h>
-#include <linux/xattr.h>
#include <asm/uaccess.h>
#include "hfsplus_fs.h"
+/*
+ * "Blessing" an HFS+ filesystem writes metadata to the superblock informing
+ * the platform firmware which file to boot from
+ */
+static int hfsplus_ioctl_bless(struct file *file, int __user *user_flags)
+{
+ struct dentry *dentry = file->f_path.dentry;
+ struct inode *inode = dentry->d_inode;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
+ struct hfsplus_vh *vh = sbi->s_vhdr;
+ struct hfsplus_vh *bvh = sbi->s_backup_vhdr;
+ u32 cnid = (unsigned long)dentry->d_fsdata;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ mutex_lock(&sbi->vh_mutex);
+
+ /* Directory containing the bootable system */
+ vh->finder_info[0] = bvh->finder_info[0] =
+ cpu_to_be32(parent_ino(dentry));
+
+ /*
+ * Bootloader. Just using the inode here breaks in the case of
+ * hard links - the firmware wants the ID of the hard link file,
+ * but the inode points at the indirect inode
+ */
+ vh->finder_info[1] = bvh->finder_info[1] = cpu_to_be32(cnid);
+
+ /* Per spec, the OS X system folder - same as finder_info[0] here */
+ vh->finder_info[5] = bvh->finder_info[5] =
+ cpu_to_be32(parent_ino(dentry));
+
+ mutex_unlock(&sbi->vh_mutex);
+ return 0;
+}
+
static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
{
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
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)
+ if (inode->i_flags & S_APPEND)
flags |= FS_APPEND_FL;
if (hip->userflags & HFSPLUS_FLG_NODUMP)
flags |= FS_NODUMP_FL;
@@ -38,16 +74,16 @@ static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
{
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags;
int err = 0;
- err = mnt_want_write(file->f_path.mnt);
+ err = mnt_want_write_file(file);
if (err)
goto out;
- if (!is_owner_or_cap(inode)) {
+ if (!inode_owner_or_capable(inode)) {
err = -EACCES;
goto out_drop_write;
}
@@ -94,7 +130,7 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
out_unlock_inode:
mutex_unlock(&inode->i_mutex);
out_drop_write:
- mnt_drop_write(file->f_path.mnt);
+ mnt_drop_write_file(file);
out:
return err;
}
@@ -108,112 +144,9 @@ long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return hfsplus_ioctl_getflags(file, argp);
case HFSPLUS_IOC_EXT2_SETFLAGS:
return hfsplus_ioctl_setflags(file, argp);
+ case HFSPLUS_IOC_BLESS:
+ return hfsplus_ioctl_bless(file, argp);
default:
return -ENOTTY;
}
}
-
-int hfsplus_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
-{
- struct inode *inode = dentry->d_inode;
- struct hfs_find_data fd;
- hfsplus_cat_entry entry;
- struct hfsplus_cat_file *file;
- int res;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
- if (res)
- return res;
- res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
- if (res)
- goto out;
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
- file = &entry.file;
-
- if (!strcmp(name, "hfs.type")) {
- if (size == 4)
- memcpy(&file->user_info.fdType, value, 4);
- else
- res = -ERANGE;
- } else if (!strcmp(name, "hfs.creator")) {
- if (size == 4)
- memcpy(&file->user_info.fdCreator, value, 4);
- else
- res = -ERANGE;
- } else
- res = -EOPNOTSUPP;
- if (!res)
- hfs_bnode_write(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
-out:
- hfs_find_exit(&fd);
- return res;
-}
-
-ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
- void *value, size_t size)
-{
- struct inode *inode = dentry->d_inode;
- struct hfs_find_data fd;
- hfsplus_cat_entry entry;
- struct hfsplus_cat_file *file;
- ssize_t res = 0;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- if (size) {
- res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
- if (res)
- return res;
- res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
- if (res)
- goto out;
- hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
- sizeof(struct hfsplus_cat_file));
- }
- file = &entry.file;
-
- if (!strcmp(name, "hfs.type")) {
- if (size >= 4) {
- memcpy(value, &file->user_info.fdType, 4);
- res = 4;
- } else
- res = size ? -ERANGE : 4;
- } else if (!strcmp(name, "hfs.creator")) {
- if (size >= 4) {
- memcpy(value, &file->user_info.fdCreator, 4);
- res = 4;
- } else
- res = size ? -ERANGE : 4;
- } else
- res = -EOPNOTSUPP;
-out:
- if (size)
- hfs_find_exit(&fd);
- return res;
-}
-
-#define HFSPLUS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
-
-ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
- struct inode *inode = dentry->d_inode;
-
- if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode))
- return -EOPNOTSUPP;
-
- if (!buffer || !size)
- return HFSPLUS_ATTRLIST_SIZE;
- if (size < HFSPLUS_ATTRLIST_SIZE)
- return -ERANGE;
- strcpy(buffer, "hfs.type");
- strcpy(buffer + sizeof("hfs.type"), "hfs.creator");
-
- return HFSPLUS_ATTRLIST_SIZE;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:10:51 +0000