Attachment 28204 Details for Bug 65318

[patch] f-maxcount.patch

f-maxcount.patch (text/plain), 1.85 KB, created by Marcus Meissner on 2005-02-04 06:03:18 UTC

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Creator: Marcus Meissner

Created: 2005-02-04 06:03:18 UTC

Size: 1.85 KB

patch

obsolete

># This is a BitKeeper generated diff -Nru style patch.
>#
># ChangeSet
>#   2005/01/25 20:29:47-08:00 torvalds@ppc970.osdl.org 
>#   Add 'f_maxcount' to allow filesystems to set a per-file maximum IO size.
># 
># fs/file_table.c
>#   2005/01/25 20:29:40-08:00 torvalds@ppc970.osdl.org +1 -0
>#   Add 'f_maxcount' to allow filesystems to set a per-file maximum IO size.
># 
># fs/read_write.c
>#   2005/01/25 20:29:40-08:00 torvalds@ppc970.osdl.org +5 -1
>#   Add 'f_maxcount' to allow filesystems to set a per-file maximum IO size.
># 
># include/linux/fs.h
>#   2005/01/25 20:29:40-08:00 torvalds@ppc970.osdl.org +1 -0
>#   Add 'f_maxcount' to allow filesystems to set a per-file maximum IO size.
># 
>diff -Nru a/fs/file_table.c b/fs/file_table.c
>--- a/fs/file_table.c	2005-02-03 14:02:09 -08:00
>+++ b/fs/file_table.c	2005-02-03 14:02:09 -08:00
>@@ -85,6 +85,7 @@
> 			rwlock_init(&f->f_owner.lock);
> 			/* f->f_version: 0 */
> 			INIT_LIST_HEAD(&f->f_list);
>+			f->f_maxcount = INT_MAX;
> 			return f;
> 		}
> 	}
>diff -Nru a/fs/read_write.c b/fs/read_write.c
>--- a/fs/read_write.c	2005-02-03 14:02:09 -08:00
>+++ b/fs/read_write.c	2005-02-03 14:02:09 -08:00
>@@ -185,8 +185,12 @@
> 
> int rw_verify_area(int read_write, struct file *file, loff_t *ppos, size_t count)
> {
>-	struct inode *inode = file->f_dentry->d_inode;
>+	struct inode *inode;
> 
>+	if (count > file->f_maxcount)
>+		return -EINVAL;
>+
>+	inode = file->f_dentry->d_inode;
> 	if (inode->i_flock && MANDATORY_LOCK(inode))
> 		return locks_mandatory_area(read_write == READ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE, inode, file, *ppos, count);
> 	return 0;
>diff -Nru a/include/linux/fs.h b/include/linux/fs.h
>--- a/include/linux/fs.h	2005-02-03 14:02:09 -08:00
>+++ b/include/linux/fs.h	2005-02-03 14:02:09 -08:00
>@@ -586,6 +586,7 @@
> 	unsigned int		f_uid, f_gid;
> 	struct file_ra_state	f_ra;
> 
>+	size_t			f_maxcount;
> 	unsigned long		f_version;
> 	void			*f_security;
>

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Attachments on bug 65318: 28196 | 28197 | 28198 | 28199 | 28200 | 28201 | 28202 | 28203 | 28204 | 28290 | 28647