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authorUlrich Drepper <drepper@redhat.com>2007-09-26 20:45:18 +0000
committerUlrich Drepper <drepper@redhat.com>2007-09-26 20:45:18 +0000
commitd6cd6bf4de43672803ad47f4c745ac6e510c6d61 (patch)
treef8e5ce0692de101c6ca1d0e4bdabbc60c6ee2473 /socket
parent408cfca0c4ec78358314d9fc7c36448d36eeb931 (diff)
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* misc/sys/cdefs.h (__warndecl, __errordecl): For GCC 4.3+ define
with __warning__/__error__ attributes. (__warnattr): Define. * stdlib/bits/stdlib.h (__realpath_chk_warn, __ptsname_r_chk_warn, __mbstowcs_chk_warn, __wcstombs_chk_warn): New aliases with __warnattr. (realpath, ptsname_r, mbstowcs, wcstombs): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. * libio/bits/stdio2.h (__fgets_chk_warn, __fread_chk_warn, __fgets_unlocked_chk_warn, __fread_unlocked_chk_warn): New aliases with __warnattr. (fgets, fread, fgets_unlocked, fread_unlocked): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (__gets_alias): Rename to... (__gets_warn): ... this. Add __warnattr. (gets): Call __gets_warn instead of __gets_alias. * socket/bits/socket2.h (__recv_chk_warn, __recvfrom_chk_warn): New aliases with __warnattr. (recv, recvfrom): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. * posix/bits/unistd.h (__read_chk_warn, __pread_chk_warn, __pread64_chk_warn, __readlink_chk_warn, __readlinkat_chk_warn, __getcwd_chk_warn, __confstr_chk_warn, __getgroups_chk_warn, __ttyname_r_chk_warn, __getlogin_r_chk_warn, __gethostname_chk_warn, __getdomainname_chk_warn): New aliases with __warnattr. (read, pread, pread64, readlink, readlinkat, getcwd, confstr, getgroups, ttyname_r, getlogin_r, gethostname, getdomainname): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (__getgroups_chk): Rename argument to __listlen from listlen. (__getwd_alias): Rename to... (__getwd_warn): ... this. Add __warnattr. (getwd): Call __getwd_warn instead of __getwd_alias. * wcsmbs/bits/wchar2.h (__wmemcpy_chk_warn, __wmemmove_chk_warn, __wmempcpy_chk_warn, __wmemset_chk_warn, __wcsncpy_chk_warn, __wcpncpy_chk_warn, __fgetws_chk_warn, __fgetws_unlocked_chk_warn, __mbsrtowcs_chk_warn, __wcsrtombs_chk_warn, __mbsnrtowcs_chk_warn, __wcsnrtombs_chk_warn): New aliases with __warnattr. (wmemcpy, wmemmove, wmempcpy, wmemset, mbsrtowcs, wcsrtombs, mbsnrtowcs, wcsnrtombs): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (wcsncpy, wcpncpy): Likewise. For constant __n fix check whether to use __*_chk or not. (fgetws, fgetws_unlocked): Divide __bos by sizeof (wchar_t), both in comparisons which function should be called and in __*_chk* arguments. Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (swprintf, vswprintf): Divide __bos by sizeof (wchar_t) in __*_chk argument. * debug/tst-chk1.c (do_test): Add a few more tests.
Diffstat (limited to 'socket')
-rw-r--r--socket/bits/socket2.h36
1 files changed, 29 insertions, 7 deletions
diff --git a/socket/bits/socket2.h b/socket/bits/socket2.h
index 9fac756..5c4cb47 100644
--- a/socket/bits/socket2.h
+++ b/socket/bits/socket2.h
@@ -25,13 +25,23 @@ extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
int __flags);
extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n,
int __flags), recv);
+extern ssize_t __REDIRECT (__recv_chk_warn,
+ (int __fd, void *__buf, size_t __n, size_t __buflen,
+ int __flags), __recv_chk)
+ __warnattr ("recv called with bigger length than size of destination "
+ "buffer");
__extern_always_inline ssize_t
recv (int __fd, void *__buf, size_t __n, int __flags)
{
- if (__bos0 (__buf) != (size_t) -1
- && (!__builtin_constant_p (__n) || __n > __bos0 (__buf)))
- return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags);
+ if (__bos0 (__buf) != (size_t) -1)
+ {
+ if (!__builtin_constant_p (__n))
+ return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags);
+
+ if (__n > __bos0 (__buf))
+ return __recv_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags);
+ }
return __recv_alias (__fd, __buf, __n, __flags);
}
@@ -43,14 +53,26 @@ extern ssize_t __REDIRECT (__recvfrom_alias,
(int __fd, void *__restrict __buf, size_t __n,
int __flags, __SOCKADDR_ARG __addr,
socklen_t *__restrict __addr_len), recvfrom);
+extern ssize_t __REDIRECT (__recvfrom_chk_warn,
+ (int __fd, void *__restrict __buf, size_t __n,
+ size_t __buflen, int __flags,
+ __SOCKADDR_ARG __addr,
+ socklen_t *__restrict __addr_len), __recvfrom_chk)
+ __warnattr ("recvfrom called with bigger length than size of "
+ "destination buffer");
__extern_always_inline ssize_t
recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
__SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len)
{
- if (__bos0 (__buf) != (size_t) -1
- && (!__builtin_constant_p (__n) || __n > __bos0 (__buf)))
- return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags,
- __addr, __addr_len);
+ if (__bos0 (__buf) != (size_t) -1)
+ {
+ if (!__builtin_constant_p (__n))
+ return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags,
+ __addr, __addr_len);
+ if (__n > __bos0 (__buf))
+ return __recvfrom_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags,
+ __addr, __addr_len);
+ }
return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len);
}