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[sanitizer] Add interceptor for ttyname_r 

Reviewers: eugenis

Subscribers: kubabrecka, llvm-commits

Differential Revision: https://reviews.llvm.org/D24375

llvm-svn: 281116
This commit is contained in:
Keno Fischer 2016-09-09 23:09:34 +00:00
parent efcc5c4390
commit 8dc0e0943b
3 changed files with 22 additions and 0 deletions
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15
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
View File

@ -4183,6 +4183,20 @@ INTERCEPTOR(char *, tmpnam_r, char *s) {
#define INIT_TMPNAM_R
#endif
#if SANITIZER_INTERCEPT_TTYNAME_R
INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize);
int res = REAL(ttyname_r)(fd, name, namesize);
if (res == 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1);
return res;
}
#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r);
#else
#define INIT_TTYNAME_R
#endif
#if SANITIZER_INTERCEPT_TEMPNAM
INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
void *ctx;
@ -6008,6 +6022,7 @@ static void InitializeCommonInterceptors() {
INIT_PTHREAD_BARRIERATTR_GETPSHARED;
INIT_TMPNAM;
INIT_TMPNAM_R;
INIT_TTYNAME_R;
INIT_TEMPNAM;
INIT_PTHREAD_SETNAME_NP;
INIT_SINCOS;

1
compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
View File

@ -235,6 +235,7 @@
#define SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED SI_LINUX_NOT_ANDROID
#define SANITIZER_INTERCEPT_TMPNAM SI_NOT_WINDOWS
#define SANITIZER_INTERCEPT_TMPNAM_R SI_LINUX_NOT_ANDROID
#define SANITIZER_INTERCEPT_TTYNAME_R SI_NOT_WINDOWS
#define SANITIZER_INTERCEPT_TEMPNAM SI_NOT_WINDOWS
#define SANITIZER_INTERCEPT_SINCOS SI_LINUX
#define SANITIZER_INTERCEPT_REMQUO SI_NOT_WINDOWS

6
compiler-rt/test/msan/Linux/forkpty.cc
View File

@ -2,6 +2,8 @@
#include <assert.h>
#include <pty.h>
#include <unistd.h>
#include <cstring>
#include <sanitizer/msan_interface.h>
@ -13,6 +15,10 @@ main (int argc, char** argv)
assert(__msan_test_shadow(&master, sizeof(master)) == -1);
assert(__msan_test_shadow(&slave, sizeof(slave)) == -1);
char ttyname[255];
ttyname_r(master, ttyname, sizeof(ttyname));
assert(__msan_test_shadow(ttyname, strlen(ttyname) + 1) == -1);
int master2;
forkpty(&master2, NULL, NULL, NULL);
assert(__msan_test_shadow(&master2, sizeof(master2)) == -1);