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Diffstat (limited to 'mm/shmem.c')
-rw-r--r--mm/shmem.c29
1 files changed, 10 insertions, 19 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index eef4ebea5158..0cd7f66f1c66 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1545,8 +1545,8 @@ static int shmem_mmap(struct file *file, struct vm_area_struct *vma)
return 0;
}
-static struct inode *shmem_get_inode(struct super_block *sb, int mode,
- dev_t dev, unsigned long flags)
+static struct inode *shmem_get_inode(struct super_block *sb, const struct inode *dir,
+ int mode, dev_t dev, unsigned long flags)
{
struct inode *inode;
struct shmem_inode_info *info;
@@ -1557,9 +1557,7 @@ static struct inode *shmem_get_inode(struct super_block *sb, int mode,
inode = new_inode(sb);
if (inode) {
- inode->i_mode = mode;
- inode->i_uid = current_fsuid();
- inode->i_gid = current_fsgid();
+ inode_init_owner(inode, dir, mode);
inode->i_blocks = 0;
inode->i_mapping->backing_dev_info = &shmem_backing_dev_info;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
@@ -1814,7 +1812,7 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
struct inode *inode;
int error = -ENOSPC;
- inode = shmem_get_inode(dir->i_sb, mode, dev, VM_NORESERVE);
+ inode = shmem_get_inode(dir->i_sb, dir, mode, dev, VM_NORESERVE);
if (inode) {
error = security_inode_init_security(inode, dir, NULL, NULL,
NULL);
@@ -1833,11 +1831,6 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
#else
error = 0;
#endif
- if (dir->i_mode & S_ISGID) {
- inode->i_gid = dir->i_gid;
- if (S_ISDIR(mode))
- inode->i_mode |= S_ISGID;
- }
dir->i_size += BOGO_DIRENT_SIZE;
dir->i_ctime = dir->i_mtime = CURRENT_TIME;
d_instantiate(dentry, inode);
@@ -1957,7 +1950,7 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
if (len > PAGE_CACHE_SIZE)
return -ENAMETOOLONG;
- inode = shmem_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
+ inode = shmem_get_inode(dir->i_sb, dir, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
if (!inode)
return -ENOSPC;
@@ -1992,8 +1985,6 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
unlock_page(page);
page_cache_release(page);
}
- if (dir->i_mode & S_ISGID)
- inode->i_gid = dir->i_gid;
dir->i_size += BOGO_DIRENT_SIZE;
dir->i_ctime = dir->i_mtime = CURRENT_TIME;
d_instantiate(dentry, inode);
@@ -2071,14 +2062,14 @@ static int shmem_xattr_security_set(struct dentry *dentry, const char *name,
size, flags);
}
-static struct xattr_handler shmem_xattr_security_handler = {
+static const struct xattr_handler shmem_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = shmem_xattr_security_list,
.get = shmem_xattr_security_get,
.set = shmem_xattr_security_set,
};
-static struct xattr_handler *shmem_xattr_handlers[] = {
+static const struct xattr_handler *shmem_xattr_handlers[] = {
&generic_acl_access_handler,
&generic_acl_default_handler,
&shmem_xattr_security_handler,
@@ -2366,7 +2357,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent)
sb->s_flags |= MS_POSIXACL;
#endif
- inode = shmem_get_inode(sb, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE);
+ inode = shmem_get_inode(sb, NULL, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE);
if (!inode)
goto failed;
inode->i_uid = sbinfo->uid;
@@ -2611,7 +2602,7 @@ int shmem_lock(struct file *file, int lock, struct user_struct *user)
#define shmem_vm_ops generic_file_vm_ops
#define shmem_file_operations ramfs_file_operations
-#define shmem_get_inode(sb, mode, dev, flags) ramfs_get_inode(sb, mode, dev)
+#define shmem_get_inode(sb, dir, mode, dev, flags) ramfs_get_inode(sb, dir, mode, dev)
#define shmem_acct_size(flags, size) 0
#define shmem_unacct_size(flags, size) do {} while (0)
#define SHMEM_MAX_BYTES MAX_LFS_FILESIZE
@@ -2655,7 +2646,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
path.mnt = mntget(shm_mnt);
error = -ENOSPC;
- inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0, flags);
+ inode = shmem_get_inode(root->d_sb, NULL, S_IFREG | S_IRWXUGO, 0, flags);
if (!inode)
goto put_dentry;