Messages in this thread Patch in this message | | | Date | Sat, 21 Jan 2006 09:41:27 +0100 | From | Herbert Poetzl <> | Subject | [PATCH 3/6] vfs: propagate vfsmount into chown_common() |
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; ; Bind Mount Extensions ; ; Copyright (C) 2003-2006 Herbert Pötzl <herbert@13thfloor.at> ; ; the vfsmount is propagated into chown_common() to allow ; for vfsmount based checks there, in this case the ; MNT_IS_RDONLY() check to disallow changes ; ; ; Changelog: ; ; 0.01 - broken out from bme0.05 ;
Signed-off-by: Herbert Pötzl <herbert@13thfloor.at>
diff -NurpP --minimal linux-2.6.16-rc1/fs/open.c linux-2.6.16-rc1-bme0.06.2-cc0.01/fs/open.c --- linux-2.6.16-rc1/fs/open.c 2006-01-18 06:08:34 +0100 +++ linux-2.6.16-rc1-bme0.06.2-cc0.01/fs/open.c 2006-01-21 09:08:38 +0100 @@ -669,7 +669,8 @@ out: return error; } -static int chown_common(struct dentry * dentry, uid_t user, gid_t group) +static int chown_common(struct dentry *dentry, struct vfsmount *mnt, + uid_t user, gid_t group) { struct inode * inode; int error; @@ -681,7 +682,7 @@ static int chown_common(struct dentry * goto out; } error = -EROFS; - if (IS_RDONLY(inode)) + if (IS_RDONLY(inode) || MNT_IS_RDONLY(mnt)) goto out; error = -EPERM; if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) @@ -711,7 +712,7 @@ asmlinkage long sys_chown(const char __u error = user_path_walk(filename, &nd); if (!error) { - error = chown_common(nd.dentry, user, group); + error = chown_common(nd.dentry, nd.mnt, user, group); path_release(&nd); } return error; @@ -724,7 +725,7 @@ asmlinkage long sys_lchown(const char __ error = user_path_walk_link(filename, &nd); if (!error) { - error = chown_common(nd.dentry, user, group); + error = chown_common(nd.dentry, nd.mnt, user, group); path_release(&nd); } return error; @@ -738,7 +739,7 @@ asmlinkage long sys_fchown(unsigned int file = fget(fd); if (file) { - error = chown_common(file->f_dentry, user, group); + error = chown_common(file->f_dentry, file->f_vfsmnt, user, group); fput(file); } return error; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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