#include <linux/mm.h>
#include <linux/stat.h>
#include <linux/smp_lock.h>
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
+#include <asm/statfs.h>
+#endif
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/lustre_lite.h>
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ll_fid fid;
+ struct mds_body *body;
int rc, symlen = inode->i_size + 1;
ENTRY;
RETURN(0);
}
- rc = mdc_getattr(&sbi->ll_mdc_conn, inode->i_ino, S_IFLNK,
+ ll_inode2fid(&fid, inode);
+ rc = mdc_getattr(&sbi->ll_mdc_conn, &fid,
OBD_MD_LINKNAME, symlen, request);
if (rc) {
CERROR("inode %lu: rc = %d\n", inode->i_ino, rc);
RETURN(rc);
}
- *symname = lustre_msg_buf((*request)->rq_repmsg, 1);
+ body = lustre_msg_buf ((*request)->rq_repmsg, 0, sizeof (*body));
+ LASSERT (body != NULL);
+ LASSERT_REPSWABBED (*request, 0);
+
+ if ((body->valid & OBD_MD_LINKNAME) == 0) {
+ CERROR ("OBD_MD_LINKNAME not set on reply\n");
+ GOTO (failed, rc = -EPROTO);
+ }
+
+ LASSERT (symlen != 0);
+ if (body->eadatasize != symlen) {
+ CERROR ("inode %lu: symlink length %d not expected %d\n",
+ inode->i_ino, body->eadatasize - 1, symlen - 1);
+ GOTO (failed, rc = -EPROTO);
+ }
+
+ *symname = lustre_msg_buf ((*request)->rq_repmsg, 1, symlen);
+ if (*symname == NULL ||
+ strnlen (*symname, symlen) != symlen - 1) {
+ /* not full/NULL terminated */
+ CERROR ("inode %lu: symlink not NULL terminated string"
+ "of length %d\n", inode->i_ino, symlen - 1);
+ GOTO (failed, rc = -EPROTO);
+ }
OBD_ALLOC(lli->lli_symlink_name, symlen);
/* do not return an error if we cannot cache the symlink locally */
memcpy(lli->lli_symlink_name, *symname, symlen);
RETURN(0);
+
+ failed:
+ ptlrpc_req_finished (*request);
+ RETURN (-EPROTO);
}
static int ll_readlink(struct dentry *dentry, char *buffer, int buflen)
int rc;
ENTRY;
+ CDEBUG(D_VFSTRACE, "VFS Op\n");
/* on symlinks lli_open_sem protects lli_symlink_name allocation/data */
down(&lli->lli_open_sem);
rc = ll_readlink_internal(inode, &request, &symname);
GOTO(out, rc);
rc = vfs_readlink(dentry, buffer, buflen, symname);
+ ptlrpc_req_finished(request);
out:
up(&lli->lli_open_sem);
- ptlrpc_req_finished(request);
-
RETURN(rc);
}
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
static int ll_follow_link(struct dentry *dentry, struct nameidata *nd,
struct lookup_intent *it)
{
struct inode *inode = dentry->d_inode;
struct ll_inode_info *lli = ll_i2info(inode);
struct ptlrpc_request *request;
- int op, mode, rc;
+ int op = 0, mode = 0, rc;
char *symname;
ENTRY;
+ CDEBUG(D_VFSTRACE, "VFS Op\n");
if (it != NULL) {
op = it->it_op;
mode = it->it_mode;
}
down(&lli->lli_open_sem);
-
rc = ll_readlink_internal(inode, &request, &symname);
+ up(&lli->lli_open_sem);
if (rc)
GOTO(out, rc);
}
rc = vfs_follow_link_it(nd, symname, it);
+ ptlrpc_req_finished(request);
out:
- up(&lli->lli_open_sem);
+ RETURN(rc);
+}
+#else
+static int ll_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ struct inode *inode = dentry->d_inode;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct ptlrpc_request *request;
+ int op = 0, mode = 0, rc;
+ char *symname;
+ ENTRY;
+
+ op = nd->it.it_op;
+ mode = nd->it.it_mode;
+
+ ll_intent_release(dentry, &nd->it);
+
+ down(&lli->lli_open_sem);
+
+ rc = ll_readlink_internal(inode, &request, &symname);
+ if (rc)
+ GOTO(out, rc);
+
+ nd->it.it_op = op;
+ nd->it.it_mode = mode;
+
+ rc = vfs_follow_link(nd, symname);
ptlrpc_req_finished(request);
+ out:
+ up(&lli->lli_open_sem);
RETURN(rc);
}
+#endif
+extern int ll_inode_revalidate(struct dentry *dentry);
extern int ll_setattr(struct dentry *de, struct iattr *attr);
struct inode_operations ll_fast_symlink_inode_operations = {
readlink: ll_readlink,
setattr: ll_setattr,
- follow_link2: ll_follow_link
+ setattr_raw: ll_setattr_raw,
+ follow_link2: ll_follow_link,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+ revalidate: ll_inode_revalidate
+#endif
};