Author: rmacklem Date: Wed May 18 18:36:40 2011 New Revision: 222075 URL: http://svn.freebsd.org/changeset/base/222075
Log: Add a sanity check for the existence of an "addr" option to both NFS clients. This avoids the crash reported by Sergey Kandaurov ([email protected]) to the freebsd-fs@ list with subject "[old nfsclient] different nmount() args passed from mount vs mount_nfs" dated May 17, 2011. Tested by: pluknet at gmail.com (old nfs client) MFC after: 2 weeks Modified: head/sys/fs/nfsclient/nfs_clvfsops.c head/sys/nfsclient/nfs_vfsops.c Modified: head/sys/fs/nfsclient/nfs_clvfsops.c ============================================================================== --- head/sys/fs/nfsclient/nfs_clvfsops.c Wed May 18 17:39:28 2011 (r222074) +++ head/sys/fs/nfsclient/nfs_clvfsops.c Wed May 18 18:36:40 2011 (r222075) @@ -1079,15 +1079,21 @@ nfs_mount(struct mount *mp) dirpath[0] = '\0'; dirlen = strlen(dirpath); - if (has_nfs_args_opt == 0 && vfs_getopt(mp->mnt_optnew, "addr", - (void **)&args.addr, &args.addrlen) == 0) { - if (args.addrlen > SOCK_MAXADDRLEN) { - error = ENAMETOOLONG; + if (has_nfs_args_opt == 0) { + if (vfs_getopt(mp->mnt_optnew, "addr", + (void **)&args.addr, &args.addrlen) == 0) { + if (args.addrlen > SOCK_MAXADDRLEN) { + error = ENAMETOOLONG; + goto out; + } + nam = malloc(args.addrlen, M_SONAME, M_WAITOK); + bcopy(args.addr, nam, args.addrlen); + nam->sa_len = args.addrlen; + } else { + vfs_mount_error(mp, "No server address"); + error = EINVAL; goto out; } - nam = malloc(args.addrlen, M_SONAME, M_WAITOK); - bcopy(args.addr, nam, args.addrlen); - nam->sa_len = args.addrlen; } args.fh = nfh; Modified: head/sys/nfsclient/nfs_vfsops.c ============================================================================== --- head/sys/nfsclient/nfs_vfsops.c Wed May 18 17:39:28 2011 (r222074) +++ head/sys/nfsclient/nfs_vfsops.c Wed May 18 18:36:40 2011 (r222075) @@ -1149,6 +1149,10 @@ nfs_mount(struct mount *mp) goto out; } } + } else if (has_addr_opt == 0) { + vfs_mount_error(mp, "No server address"); + error = EINVAL; + goto out; } error = mountnfs(&args, mp, nam, args.hostname, &vp, curthread->td_ucred, negnametimeo); _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
