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[PATCH] add a file_permission helper
A few more callers of permission() just want to check for a different access pattern on an already open file. This patch adds a wrapper for permission() that takes a file in preparation of per-mount read-only support and to clean up the callers a little. The helper is not intended for new code, everything without the interface set in stone should use vfs_permission() Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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8 changed files with 47 additions and 21 deletions
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@ -3776,8 +3776,7 @@ static int floppy_open(struct inode *inode, struct file *filp)
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/* Allow ioctls if we have write-permissions even if read-only open.
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* Needed so that programs such as fdrawcmd still can work on write
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* protected disks */
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if (filp->f_mode & 2
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|| permission(filp->f_dentry->d_inode, 2, NULL) == 0)
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if ((filp->f_mode & FMODE_WRITE) || !file_permission(filp, MAY_WRITE))
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filp->private_data = (void *)8;
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if (UFDCS->rawcmd == 1)
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