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authorAl Viro <viro@zeniv.linux.org.uk>2011-06-26 03:15:54 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 09:43:52 +0400
commit8a5e929dd2e05ab4d3d89f58c5e8fca596af8f3a (patch)
tree8cbed05fcd99d24e881e5ea12d8a954865e31085 /fs/nfs/dir.c
parent554a8b9f54cd7ca2b89f5dc227df08be082fae0d (diff)
downloadlinux-8a5e929dd2e05ab4d3d89f58c5e8fca596af8f3a.tar.xz
don't transliterate lower bits of ->intent.open.flags to FMODE_...
->create() instances are much happier that way... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 1f4625749038..b5f63a50fa7f 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1338,16 +1338,26 @@ static int is_atomic_open(struct nameidata *nd)
return 0;
/* Are we trying to write to a read only partition? */
if (__mnt_is_readonly(nd->path.mnt) &&
- (nd->intent.open.flags & (O_CREAT|O_TRUNC|FMODE_WRITE)))
+ (nd->intent.open.flags & (O_CREAT|O_TRUNC|O_ACCMODE)))
return 0;
return 1;
}
+static fmode_t flags_to_mode(int flags)
+{
+ fmode_t res = (__force fmode_t)flags & FMODE_EXEC;
+ if ((flags & O_ACCMODE) != O_WRONLY)
+ res |= FMODE_READ;
+ if ((flags & O_ACCMODE) != O_RDONLY)
+ res |= FMODE_WRITE;
+ return res;
+}
+
static struct nfs_open_context *create_nfs_open_context(struct dentry *dentry, int open_flags)
{
struct nfs_open_context *ctx;
struct rpc_cred *cred;
- fmode_t fmode = open_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
+ fmode_t fmode = flags_to_mode(open_flags);
cred = rpc_lookup_cred();
if (IS_ERR(cred))
@@ -1567,7 +1577,7 @@ static int nfs_open_create(struct inode *dir, struct dentry *dentry, int mode,
struct nfs_open_context *ctx = NULL;
struct iattr attr;
int error;
- int open_flags = O_CREAT|O_EXCL|FMODE_READ;
+ int open_flags = O_CREAT|O_EXCL;
dfprintk(VFS, "NFS: create(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
@@ -1657,7 +1667,7 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
{
struct iattr attr;
int error;
- int open_flags = O_CREAT|O_EXCL|FMODE_READ;
+ int open_flags = O_CREAT|O_EXCL;
dfprintk(VFS, "NFS: create(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
@@ -2256,11 +2266,11 @@ static int nfs_open_permission_mask(int openflags)
{
int mask = 0;
- if (openflags & FMODE_READ)
+ if ((openflags & O_ACCMODE) != O_WRONLY)
mask |= MAY_READ;
- if (openflags & FMODE_WRITE)
+ if ((openflags & O_ACCMODE) != O_RDONLY)
mask |= MAY_WRITE;
- if (openflags & FMODE_EXEC)
+ if (openflags & __FMODE_EXEC)
mask |= MAY_EXEC;
return mask;
}