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author | Ulrich Drepper <drepper@redhat.com> | 2007-09-26 20:45:18 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2007-09-26 20:45:18 +0000 |
commit | d6cd6bf4de43672803ad47f4c745ac6e510c6d61 (patch) | |
tree | f8e5ce0692de101c6ca1d0e4bdabbc60c6ee2473 /socket/bits | |
parent | 408cfca0c4ec78358314d9fc7c36448d36eeb931 (diff) | |
download | glibc-d6cd6bf4de43672803ad47f4c745ac6e510c6d61.zip glibc-d6cd6bf4de43672803ad47f4c745ac6e510c6d61.tar.gz glibc-d6cd6bf4de43672803ad47f4c745ac6e510c6d61.tar.bz2 |
* 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/bits')
-rw-r--r-- | socket/bits/socket2.h | 36 |
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); } |