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authorDavid Howells <dhowells@redhat.com>2018-10-04 09:32:27 +0100
committerDavid Howells <dhowells@redhat.com>2018-10-04 09:32:27 +0100
commit4c19bbdc7f7c76da14a7192072c47c3b9b582e80 (patch)
treef2943cb03fb3b244ace82ef2f39b21f9e38400ee /fs/afs/addr_list.c
parent68eb64c3d2fd558c606dcff6d3e8a2701388a80f (diff)
downloadlinux-4c19bbdc7f7c76da14a7192072c47c3b9b582e80.tar.bz2
afs: Always build address lists using the helper functions
Make the address list string parser use the helper functions for adding addresses to an address list so that they end up appropriately sorted. This will better handles overruns and make them easier to compare. It also reduces the number of places that addresses are handled, making it easier to fix the handling. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/addr_list.c')
-rw-r--r--fs/afs/addr_list.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c
index 4dbb8af54668..00e87f859b9f 100644
--- a/fs/afs/addr_list.c
+++ b/fs/afs/addr_list.c
@@ -116,8 +116,10 @@ struct afs_addr_list *afs_parse_text_addrs(const char *text, size_t len,
/* Extract the addresses */
p = text;
do {
- struct sockaddr_rxrpc *srx = &alist->addrs[alist->nr_addrs];
const char *q, *stop;
+ unsigned int xport = port;
+ __be32 x[4];
+ int family;
if (*p == delim) {
p++;
@@ -133,19 +135,12 @@ struct afs_addr_list *afs_parse_text_addrs(const char *text, size_t len,
break;
}
- if (in4_pton(p, q - p,
- (u8 *)&srx->transport.sin6.sin6_addr.s6_addr32[3],
- -1, &stop)) {
- srx->transport.sin6.sin6_addr.s6_addr32[0] = 0;
- srx->transport.sin6.sin6_addr.s6_addr32[1] = 0;
- srx->transport.sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
- } else if (in6_pton(p, q - p,
- srx->transport.sin6.sin6_addr.s6_addr,
- -1, &stop)) {
- /* Nothing to do */
- } else {
+ if (in4_pton(p, q - p, (u8 *)&x[0], -1, &stop))
+ family = AF_INET;
+ else if (in6_pton(p, q - p, (u8 *)x, -1, &stop))
+ family = AF_INET6;
+ else
goto bad_address;
- }
if (stop != q)
goto bad_address;
@@ -157,7 +152,7 @@ struct afs_addr_list *afs_parse_text_addrs(const char *text, size_t len,
if (p < end) {
if (*p == '+') {
/* Port number specification "+1234" */
- unsigned int xport = 0;
+ xport = 0;
p++;
if (p >= end || !isdigit(*p))
goto bad_address;
@@ -168,7 +163,6 @@ struct afs_addr_list *afs_parse_text_addrs(const char *text, size_t len,
goto bad_address;
p++;
} while (p < end && isdigit(*p));
- srx->transport.sin6.sin6_port = htons(xport);
} else if (*p == delim) {
p++;
} else {
@@ -176,8 +170,12 @@ struct afs_addr_list *afs_parse_text_addrs(const char *text, size_t len,
}
}
- alist->nr_addrs++;
- } while (p < end && alist->nr_addrs < alist->max_addrs);
+ if (family == AF_INET)
+ afs_merge_fs_addr4(alist, x[0], xport);
+ else
+ afs_merge_fs_addr6(alist, x, xport);
+
+ } while (p < end);
_leave(" = [nr %u]", alist->nr_addrs);
return alist;