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Diffstat (limited to 'fs/reiserfs/ioctl.c')
-rw-r--r--fs/reiserfs/ioctl.c129
1 files changed, 70 insertions, 59 deletions
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 830332021ed..501ed6811a2 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -5,54 +5,62 @@
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/mount.h>
-#include <linux/reiserfs_fs.h>
+#include "reiserfs.h"
#include <linux/time.h>
#include <asm/uaccess.h>
#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
#include <linux/compat.h>
/*
-** reiserfs_ioctl - handler for ioctl for inode
-** supported commands:
-** 1) REISERFS_IOC_UNPACK - try to unpack tail from direct item into indirect
-** and prevent packing file (argument arg has to be non-zero)
-** 2) REISERFS_IOC_[GS]ETFLAGS, REISERFS_IOC_[GS]ETVERSION
-** 3) That's all for a while ...
-*/
-int reiserfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+ * reiserfs_ioctl - handler for ioctl for inode
+ * supported commands:
+ * 1) REISERFS_IOC_UNPACK - try to unpack tail from direct item into indirect
+ * and prevent packing file (argument arg has t
+ * be non-zero)
+ * 2) REISERFS_IOC_[GS]ETFLAGS, REISERFS_IOC_[GS]ETVERSION
+ * 3) That's all for a while ...
+ */
+long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
+ struct inode *inode = file_inode(filp);
unsigned int flags;
int err = 0;
+ reiserfs_write_lock(inode->i_sb);
+
switch (cmd) {
case REISERFS_IOC_UNPACK:
if (S_ISREG(inode->i_mode)) {
if (arg)
- return reiserfs_unpack(inode, filp);
- else
- return 0;
+ err = reiserfs_unpack(inode, filp);
} else
- return -ENOTTY;
- /* following two cases are taken from fs/ext2/ioctl.c by Remy
- Card (card@masi.ibp.fr) */
+ err = -ENOTTY;
+ break;
+ /*
+ * following two cases are taken from fs/ext2/ioctl.c by Remy
+ * Card (card@masi.ibp.fr)
+ */
case REISERFS_IOC_GETFLAGS:
- if (!reiserfs_attrs(inode->i_sb))
- return -ENOTTY;
+ if (!reiserfs_attrs(inode->i_sb)) {
+ err = -ENOTTY;
+ break;
+ }
flags = REISERFS_I(inode)->i_attrs;
i_attrs_to_sd_attrs(inode, (__u16 *) & flags);
- return put_user(flags, (int __user *)arg);
+ err = put_user(flags, (int __user *)arg);
+ break;
case REISERFS_IOC_SETFLAGS:{
- if (!reiserfs_attrs(inode->i_sb))
- return -ENOTTY;
+ if (!reiserfs_attrs(inode->i_sb)) {
+ err = -ENOTTY;
+ break;
+ }
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
- return err;
+ break;
- if (!is_owner_or_cap(inode)) {
+ if (!inode_owner_or_capable(inode)) {
err = -EPERM;
goto setflags_out;
}
@@ -89,17 +97,20 @@ int reiserfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
setflags_out:
- mnt_drop_write(filp->f_path.mnt);
- return err;
+ mnt_drop_write_file(filp);
+ break;
}
case REISERFS_IOC_GETVERSION:
- return put_user(inode->i_generation, (int __user *)arg);
+ err = put_user(inode->i_generation, (int __user *)arg);
+ break;
case REISERFS_IOC_SETVERSION:
- if (!is_owner_or_cap(inode))
- return -EPERM;
- err = mnt_want_write(filp->f_path.mnt);
+ if (!inode_owner_or_capable(inode)) {
+ err = -EPERM;
+ break;
+ }
+ err = mnt_want_write_file(filp);
if (err)
- return err;
+ break;
if (get_user(inode->i_generation, (int __user *)arg)) {
err = -EFAULT;
goto setversion_out;
@@ -107,21 +118,25 @@ setflags_out:
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
setversion_out:
- mnt_drop_write(filp->f_path.mnt);
- return err;
+ mnt_drop_write_file(filp);
+ break;
default:
- return -ENOTTY;
+ err = -ENOTTY;
}
+
+ reiserfs_write_unlock(inode->i_sb);
+
+ return err;
}
#ifdef CONFIG_COMPAT
long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
- struct inode *inode = file->f_path.dentry->d_inode;
- int ret;
-
- /* These are just misnamed, they actually get/put from/to user an int */
+ /*
+ * These are just misnamed, they actually
+ * get/put from/to user an int
+ */
switch (cmd) {
case REISERFS_IOC32_UNPACK:
cmd = REISERFS_IOC_UNPACK;
@@ -141,22 +156,18 @@ long reiserfs_compat_ioctl(struct file *file, unsigned int cmd,
default:
return -ENOIOCTLCMD;
}
- lock_kernel();
- ret = reiserfs_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
- unlock_kernel();
- return ret;
+
+ return reiserfs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif
int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to);
-int reiserfs_prepare_write(struct file *f, struct page *page,
- unsigned from, unsigned to);
/*
-** reiserfs_unpack
-** Function try to convert tail from direct item into indirect.
-** It set up nopack attribute in the REISERFS_I(inode)->nopack
-*/
+ * reiserfs_unpack
+ * Function try to convert tail from direct item into indirect.
+ * It set up nopack attribute in the REISERFS_I(inode)->nopack
+ */
int reiserfs_unpack(struct inode *inode, struct file *filp)
{
int retval = 0;
@@ -175,10 +186,9 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
return 0;
}
- /* we need to make sure nobody is changing the file size beneath
- ** us
- */
- mutex_lock(&inode->i_mutex);
+ /* we need to make sure nobody is changing the file size beneath us */
+ reiserfs_mutex_lock_safe(&inode->i_mutex, inode->i_sb);
+
reiserfs_write_lock(inode->i_sb);
write_from = inode->i_size & (blocksize - 1);
@@ -188,9 +198,10 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
goto out;
}
- /* we unpack by finding the page with the tail, and calling
- ** reiserfs_prepare_write on that page. This will force a
- ** reiserfs_get_block to unpack the tail for us.
+ /*
+ * we unpack by finding the page with the tail, and calling
+ * __reiserfs_write_begin on that page. This will force a
+ * reiserfs_get_block to unpack the tail for us.
*/
index = inode->i_size >> PAGE_CACHE_SHIFT;
mapping = inode->i_mapping;
@@ -199,7 +210,7 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
if (!page) {
goto out;
}
- retval = reiserfs_prepare_write(NULL, page, write_from, write_from);
+ retval = __reiserfs_write_begin(page, write_from, 0);
if (retval)
goto out_unlock;
@@ -208,11 +219,11 @@ int reiserfs_unpack(struct inode *inode, struct file *filp)
retval = reiserfs_commit_write(NULL, page, write_from, write_from);
REISERFS_I(inode)->i_flags |= i_nopack_mask;
- out_unlock:
+out_unlock:
unlock_page(page);
page_cache_release(page);
- out:
+out:
mutex_unlock(&inode->i_mutex);
reiserfs_write_unlock(inode->i_sb);
return retval;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:33:54 +0000