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mqueue: clean prepare_open() up 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-12-01 17:57:02 -05:00
parent 066cc813e9
commit 9b20d7fc52
1 changed files with 11 additions and 18 deletions
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29
ipc/mqueue.c
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@ -721,26 +721,19 @@ static int prepare_open(struct dentry *dentry, int oflag, int ro,
MAY_READ | MAY_WRITE };
int acc;
if (oflag & O_CREAT) {
if (d_really_is_positive(dentry)) { /* entry already exists */
audit_inode(name, dentry, 0);
if (oflag & O_EXCL)
return -EEXIST;
} else {
if (ro)
return ro;
audit_inode_parent_hidden(name, dentry->d_parent);
return vfs_mkobj(dentry, mode & ~current_umask(),
mqueue_create_attr, attr);
}
} else {
if (d_really_is_negative(dentry)) {
if (d_really_is_negative(dentry)) {
if (!(oflag & O_CREAT))
return -ENOENT;
} else {
audit_inode(name, dentry, 0);
}
if (ro)
return ro;
audit_inode_parent_hidden(name, dentry->d_parent);
return vfs_mkobj(dentry, mode & ~current_umask(),
mqueue_create_attr, attr);
}
/* it already existed */
audit_inode(name, dentry, 0);
if ((oflag & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL))
return -EEXIST;
if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY))
return -EINVAL;
acc = oflag2acc[oflag & O_ACCMODE];