diff options
Diffstat (limited to 'fs/cifs/connect.c')
| -rw-r--r-- | fs/cifs/connect.c | 68 |
1 files changed, 49 insertions, 19 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 17c3643e5950..4474a57f30ab 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -987,6 +987,41 @@ static int get_option_ul(substring_t args[], unsigned long *option) return rc; } +static int get_option_uid(substring_t args[], kuid_t *result) +{ + unsigned long value; + kuid_t uid; + int rc; + + rc = get_option_ul(args, &value); + if (rc) + return rc; + + uid = make_kuid(current_user_ns(), value); + if (!uid_valid(uid)) + return -EINVAL; + + *result = uid; + return 0; +} + +static int get_option_gid(substring_t args[], kgid_t *result) +{ + unsigned long value; + kgid_t gid; + int rc; + + rc = get_option_ul(args, &value); + if (rc) + return rc; + + gid = make_kgid(current_user_ns(), value); + if (!gid_valid(gid)) + return -EINVAL; + + *result = gid; + return 0; +} static int cifs_parse_security_flavors(char *value, struct smb_vol *vol) @@ -1424,47 +1459,42 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, /* Numeric Values */ case Opt_backupuid: - if (get_option_ul(args, &option)) { + if (get_option_uid(args, &vol->backupuid)) { cERROR(1, "%s: Invalid backupuid value", __func__); goto cifs_parse_mount_err; } - vol->backupuid = option; vol->backupuid_specified = true; break; case Opt_backupgid: - if (get_option_ul(args, &option)) { + if (get_option_gid(args, &vol->backupgid)) { cERROR(1, "%s: Invalid backupgid value", __func__); goto cifs_parse_mount_err; } - vol->backupgid = option; vol->backupgid_specified = true; break; case Opt_uid: - if (get_option_ul(args, &option)) { + if (get_option_uid(args, &vol->linux_uid)) { cERROR(1, "%s: Invalid uid value", __func__); goto cifs_parse_mount_err; } - vol->linux_uid = option; uid_specified = true; break; case Opt_cruid: - if (get_option_ul(args, &option)) { + if (get_option_uid(args, &vol->cred_uid)) { cERROR(1, "%s: Invalid cruid value", __func__); goto cifs_parse_mount_err; } - vol->cred_uid = option; break; case Opt_gid: - if (get_option_ul(args, &option)) { + if (get_option_gid(args, &vol->linux_gid)) { cERROR(1, "%s: Invalid gid value", __func__); goto cifs_parse_mount_err; } - vol->linux_gid = option; gid_specified = true; break; case Opt_file_mode: @@ -1917,7 +1947,7 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) } case AF_INET6: { struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr; - struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)&rhs; + struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)rhs; return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr); } default: @@ -2241,7 +2271,7 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol) { switch (ses->server->secType) { case Kerberos: - if (vol->cred_uid != ses->cred_uid) + if (!uid_eq(vol->cred_uid, ses->cred_uid)) return 0; break; default: @@ -2713,7 +2743,7 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data) if (new->rsize && new->rsize < old->rsize) return 0; - if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid) + if (!uid_eq(old->mnt_uid, new->mnt_uid) || !gid_eq(old->mnt_gid, new->mnt_gid)) return 0; if (old->mnt_file_mode != new->mnt_file_mode || @@ -3919,7 +3949,7 @@ cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses) } static struct cifs_tcon * -cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) +cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) { int rc; struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb); @@ -3989,7 +4019,7 @@ cifs_sb_tcon_pending_wait(void *unused) /* find and return a tlink with given uid */ static struct tcon_link * -tlink_rb_search(struct rb_root *root, uid_t uid) +tlink_rb_search(struct rb_root *root, kuid_t uid) { struct rb_node *node = root->rb_node; struct tcon_link *tlink; @@ -3997,9 +4027,9 @@ tlink_rb_search(struct rb_root *root, uid_t uid) while (node) { tlink = rb_entry(node, struct tcon_link, tl_rbnode); - if (tlink->tl_uid > uid) + if (uid_gt(tlink->tl_uid, uid)) node = node->rb_left; - else if (tlink->tl_uid < uid) + else if (uid_lt(tlink->tl_uid, uid)) node = node->rb_right; else return tlink; @@ -4018,7 +4048,7 @@ tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink) tlink = rb_entry(*new, struct tcon_link, tl_rbnode); parent = *new; - if (tlink->tl_uid > new_tlink->tl_uid) + if (uid_gt(tlink->tl_uid, new_tlink->tl_uid)) new = &((*new)->rb_left); else new = &((*new)->rb_right); @@ -4048,7 +4078,7 @@ struct tcon_link * cifs_sb_tlink(struct cifs_sb_info *cifs_sb) { int ret; - uid_t fsuid = current_fsuid(); + kuid_t fsuid = current_fsuid(); struct tcon_link *tlink, *newtlink; if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) |