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authorUlrich Drepper <drepper@redhat.com>2005-03-06 20:56:52 +0000
committerUlrich Drepper <drepper@redhat.com>2005-03-06 20:56:52 +0000
commit4625abbf26ae8ca7bd49a00de0c744136323699b (patch)
treee6c46b25deec24333dc0fd7ec01c22d7eb0d5397 /socket
parentfcb050599109dac133dd444e4e3712a82987fe3c (diff)
downloadglibc-4625abbf26ae8ca7bd49a00de0c744136323699b.tar.gz
(recv): Avoid calls to the _chk variant if we know the call succeeds. (recvfrom): Likewise.
Diffstat (limited to 'socket')
-rw-r--r--socket/bits/socket2.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/socket/bits/socket2.h b/socket/bits/socket2.h
index 0ccb24ca31..e752879e6e 100644
--- a/socket/bits/socket2.h
+++ b/socket/bits/socket2.h
@@ -25,6 +25,7 @@ extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
int __flags);
#define recv(fd, buf, n, flags) \
(__bos0 (buf) != (size_t) -1 \
+ && (!__builtin_constant_p (n) || (n) > __bos0 (buf)) \
? __recv_chk (fd, buf, n, __bos0 (buf), flags) \
: recv (fd, buf, n, flags))
@@ -34,5 +35,6 @@ extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n,
socklen_t *__restrict __addr_len);
#define recvfrom(fd, buf, n, flags, addr, addr_len) \
(__bos0 (buf) != (size_t) -1 \
+ && (!__builtin_constant_p (n) || (n) > __bos0 (buf)) \
? __recvfrom_chk (fd, buf, n, __bos0 (buf), flags, addr, addr_len) \
: recvfrom (fd, buf, n, flags, addr, addr_len))