2 * Lustre Light Update Records
4 * This code is issued under the GNU General Public License.
5 * See the file COPYING in this distribution
7 * Copryright (C) 2002 Cluster File Systems, Inc.
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
15 #include <linux/string.h>
16 #include <linux/stat.h>
17 #include <linux/errno.h>
18 #include <linux/locks.h>
19 #include <linux/unistd.h>
21 #include <asm/system.h>
22 #include <asm/uaccess.h>
25 #include <linux/stat.h>
26 #include <asm/uaccess.h>
27 #include <linux/vmalloc.h>
28 #include <linux/slab.h>
29 #include <asm/segment.h>
31 #include <linux/obd_support.h>
32 #include <linux/lustre_lib.h>
33 #include <linux/lustre_idl.h>
34 #include <linux/lustre_light.h>
36 /* packing of MDS records */
38 void mds_create_pack(struct mds_rec_create *rec, struct inode *inode, char *name, __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time)
40 char *tmp = (char *)rec + sizeof(*rec);
41 /* XXX do something about time, uid, gid */
43 HTON__u32(sizeof(*rec)) + size_round(strlen(name) + 1);
44 rec->cr_opcode = HTON__u32(REINT_CREATE);
46 ll_inode2fid(&rec->cr_fid, inode);
47 rec->cr_mode = HTON__u32(mode);
48 rec->cr_id = HTON__u64(id);
49 rec->cr_uid = HTON__u32(uid);
50 rec->cr_gid = HTON__u32(gid);
51 rec->cr_time = HTON__u64(time);
52 rec->cr_namelen = strlen(name);
53 LOGL(name, rec->cr_namelen + 1, tmp);
57 void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr)
59 rec->sa_reclen = HTON__u32(sizeof(*rec));
60 rec->sa_opcode = HTON__u32(REINT_SETATTR);
62 ll_inode2fid(&rec->sa_fid, inode);
63 rec->sa_valid = HTON__u32(iattr->ia_valid);
64 rec->sa_mode = HTON__u32(iattr->ia_mode);
65 rec->sa_uid = HTON__u32(iattr->ia_uid);
66 rec->sa_gid = HTON__u32(iattr->ia_gid);
67 rec->sa_size = HTON__u64(iattr->ia_size);
68 rec->sa_atime = HTON__u64(iattr->ia_atime);
69 rec->sa_mtime = HTON__u64(iattr->ia_mtime);
70 rec->sa_ctime = HTON__u64(iattr->ia_ctime);
71 rec->sa_attr_flags = HTON__u32(iattr->ia_attr_flags);
76 static int mds_update_hdr_unpack(char *buf, int len, struct mds_update_record *r)
78 struct mds_update_record_hdr *hdr = (struct mds_update_record_hdr *)buf;
80 r->ur_reclen = NTOH__u32(hdr->ur_reclen);
81 if (len < sizeof(*hdr) || len != r->ur_reclen) {
82 printk(__FUNCTION__ "invalid buffer length\n");
85 r->ur_opcode = NTOH__u32(hdr->ur_opcode);
89 static int mds_setattr_unpack(char *buf, int len, struct mds_update_record *r)
92 struct iattr *attr = &r->ur_iattr;
93 struct mds_rec_setattr *rec = (struct mds_rec_setattr *)buf;
95 if (len < sizeof(*rec)) {
96 printk(__FUNCTION__ "invalid buffer length\n");
100 r->ur_fid1 = &rec->sa_fid;
101 attr->ia_valid = NTOH__u32(rec->sa_valid);
102 attr->ia_mode = NTOH__u32(rec->sa_mode);
103 attr->ia_uid = NTOH__u32(rec->sa_uid);
104 attr->ia_gid = NTOH__u32(rec->sa_gid);
105 attr->ia_size = NTOH__u64(rec->sa_size);
106 attr->ia_atime = NTOH__u64(rec->sa_atime);
107 attr->ia_mtime = NTOH__u64(rec->sa_mtime);
108 attr->ia_ctime = NTOH__u64(rec->sa_ctime);
109 attr->ia_attr_flags = NTOH__u32(rec->sa_attr_flags);
113 static int mds_create_unpack(char *buf, int len, struct mds_update_record *r)
115 struct mds_rec_create *rec = (struct mds_rec_create *)buf;
118 if (len < sizeof(*rec)) {
119 printk(__FUNCTION__ "invalid buffer length\n");
123 ptr = (char *)rec + sizeof(*rec);
124 end = ptr + len - sizeof(*rec);
126 r->ur_fid1 = &rec->cr_fid;
127 r->ur_mode = NTOH__u32(rec->cr_mode);
128 r->ur_id = NTOH__u64(rec->cr_id);
129 r->ur_uid = NTOH__u32(rec->cr_uid);
130 r->ur_gid = NTOH__u32(rec->cr_gid);
131 r->ur_time = NTOH__u64(rec->cr_time);
132 r->ur_namelen = NTOH__u64(rec->cr_namelen);
134 UNLOGL(r->ur_name, char, r->ur_namelen, ptr, end);
138 typedef int (*update_unpacker)(char *, int , struct mds_update_record *);
140 static update_unpacker mds_unpackers[REINT_MAX + 1] = {
141 [REINT_SETATTR] mds_setattr_unpack,
142 [REINT_CREATE] mds_create_unpack
145 int mds_update_unpack(char *buf, int len, struct mds_update_record *r)
150 rc = mds_update_hdr_unpack(buf, len, r);
157 if ( r->ur_opcode<0 || r->ur_opcode > REINT_MAX) {
162 rc = mds_unpackers[r->ur_opcode](buf, len, r);