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authorAl Viro <viro@zeniv.linux.org.uk>2014-10-21 15:20:42 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2014-10-31 17:48:54 -0400
commita7400222e3eb7d5ce3820d2234905bbeafabd171 (patch)
treef630c4138ceb3889e08c5cd0029d2f07ec47dd0a
parentac7576f4b1da8c9c6bc1ae026c2b9e86ae617ba5 (diff)
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new helper: is_root_inode()
replace open-coded instances Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/coda/coda_linux.c6
-rw-r--r--fs/coda/coda_linux.h1
-rw-r--r--fs/coda/dir.c12
-rw-r--r--fs/ncpfs/dir.c4
-rw-r--r--include/linux/fs.h5
5 files changed, 13 insertions, 15 deletions
diff --git a/fs/coda/coda_linux.c b/fs/coda/coda_linux.c
index 1326d38960db..f1714cfb589c 100644
--- a/fs/coda/coda_linux.c
+++ b/fs/coda/coda_linux.c
@@ -40,12 +40,6 @@ int coda_iscontrol(const char *name, size_t length)
(strncmp(name, CODA_CONTROL, CODA_CONTROLLEN) == 0));
}
-/* recognize /coda inode */
-int coda_isroot(struct inode *i)
-{
- return ( i->i_sb->s_root->d_inode == i );
-}
-
unsigned short coda_flags_to_cflags(unsigned short flags)
{
unsigned short coda_flags = 0;
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h
index d42b725b1d21..d6f7a76a1f5b 100644
--- a/fs/coda/coda_linux.h
+++ b/fs/coda/coda_linux.h
@@ -52,7 +52,6 @@ int coda_setattr(struct dentry *, struct iattr *);
/* this file: heloers */
char *coda_f2s(struct CodaFid *f);
-int coda_isroot(struct inode *i);
int coda_iscontrol(const char *name, size_t length);
void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 9c3dedc000d1..7ff025966e4f 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -107,7 +107,7 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, unsig
}
/* control object, create inode on the fly */
- if (coda_isroot(dir) && coda_iscontrol(name, length)) {
+ if (is_root_inode(dir) && coda_iscontrol(name, length)) {
inode = coda_cnode_makectl(sb);
type = CODA_NOCACHE;
} else {
@@ -195,7 +195,7 @@ static int coda_create(struct inode *dir, struct dentry *de, umode_t mode, bool
struct CodaFid newfid;
struct coda_vattr attrs;
- if (coda_isroot(dir) && coda_iscontrol(name, length))
+ if (is_root_inode(dir) && coda_iscontrol(name, length))
return -EPERM;
error = venus_create(dir->i_sb, coda_i2f(dir), name, length,
@@ -227,7 +227,7 @@ static int coda_mkdir(struct inode *dir, struct dentry *de, umode_t mode)
int error;
struct CodaFid newfid;
- if (coda_isroot(dir) && coda_iscontrol(name, len))
+ if (is_root_inode(dir) && coda_iscontrol(name, len))
return -EPERM;
attrs.va_mode = mode;
@@ -261,7 +261,7 @@ static int coda_link(struct dentry *source_de, struct inode *dir_inode,
int len = de->d_name.len;
int error;
- if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
+ if (is_root_inode(dir_inode) && coda_iscontrol(name, len))
return -EPERM;
error = venus_link(dir_inode->i_sb, coda_i2f(inode),
@@ -287,7 +287,7 @@ static int coda_symlink(struct inode *dir_inode, struct dentry *de,
int symlen;
int error;
- if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
+ if (is_root_inode(dir_inode) && coda_iscontrol(name, len))
return -EPERM;
symlen = strlen(symname);
@@ -507,7 +507,7 @@ static int coda_dentry_revalidate(struct dentry *de, unsigned int flags)
return -ECHILD;
inode = de->d_inode;
- if (!inode || coda_isroot(inode))
+ if (!inode || is_root_inode(inode))
goto out;
if (is_bad_inode(inode))
goto bad;
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 7cb751dfbeef..461f6be5df20 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -198,8 +198,8 @@ ncp_single_volume(struct ncp_server *server)
static inline int ncp_is_server_root(struct inode *inode)
{
- return (!ncp_single_volume(NCP_SERVER(inode)) &&
- inode == inode->i_sb->s_root->d_inode);
+ return !ncp_single_volume(NCP_SERVER(inode)) &&
+ is_root_inode(inode);
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 00c8e4f65cb6..1c12c681803f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2789,6 +2789,11 @@ static inline void inode_has_no_xattr(struct inode *inode)
inode->i_flags |= S_NOSEC;
}
+static inline bool is_root_inode(struct inode *inode)
+{
+ return inode == inode->i_sb->s_root->d_inode;
+}
+
static inline bool dir_emit(struct dir_context *ctx,
const char *name, int namelen,
u64 ino, unsigned type)