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[sanitizer] Intercept getgrnam{_r}, getgrgid{_r}. 

llvm-svn: 180091
This commit is contained in:
Evgeniy Stepanov 2013-04-23 12:01:20 +00:00
parent 0cd7cf8217
commit 3076ba0a08
7 changed files with 82 additions and 14 deletions
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13
compiler-rt/lib/msan/tests/msan_test.cc
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@ -27,6 +27,7 @@
#include <math.h>
#include <dlfcn.h>
#include <grp.h>
#include <unistd.h>
#include <limits.h>
#include <sys/time.h>
@ -1678,6 +1679,18 @@ TEST(MemorySanitizer, getpwnam_r_positive) {
EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
}
TEST(MemorySanitizer, getgrnam_r) {
struct group grp;
struct group *grpres;
char buf[10000];
int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
assert(!res);
EXPECT_NOT_POISONED(grp.gr_name);
assert(grp.gr_name);
EXPECT_NOT_POISONED(grp.gr_name[0]);
EXPECT_NOT_POISONED(grp.gr_gid);
}
template<class T>
static bool applySlt(T value, T shadow) {
__msan_partial_poison(&value, &shadow, sizeof(T));

68
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
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@ -429,7 +429,7 @@ SCANF_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
#define INIT_SCANF
#endif
#if SANITIZER_INTERCEPT_GETPWNAM_GETPWUID
#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
INTERCEPTOR(void *, getpwnam, const char *name) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name);
@ -447,15 +447,34 @@ INTERCEPTOR(void *, getpwuid, u32 uid) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_passwd_sz);
return res;
}
#define INIT_GETPWNAM_GETPWUID \
INTERCEPT_FUNCTION(getpwnam); \
INTERCEPT_FUNCTION(getpwuid);
INTERCEPTOR(void *, getgrnam, const char *name) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name);
COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
void *res = REAL(getgrnam)(name);
if (res != 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_group_sz);
return res;
}
INTERCEPTOR(void *, getgrgid, u32 gid) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid);
void *res = REAL(getgrgid)(gid);
if (res != 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_group_sz);
return res;
}
#define INIT_GETPWNAM_AND_FRIENDS \
INTERCEPT_FUNCTION(getpwnam); \
INTERCEPT_FUNCTION(getpwuid); \
INTERCEPT_FUNCTION(getgrnam); \
INTERCEPT_FUNCTION(getgrgid);
#else
#define INIT_GETPWNAM_GETPWUID
#define INIT_GETPWNAM_AND_FRIENDS
#endif
#if SANITIZER_INTERCEPT_GETPWNAM_R_GETPWUID_R
#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS
INTERCEPTOR(int, getpwnam_r, const char *name, void *pwd,
char *buf, SIZE_T buflen, void **result) {
void *ctx;
@ -479,11 +498,36 @@ INTERCEPTOR(int, getpwuid_r, u32 uid, void *pwd,
}
return res;
}
#define INIT_GETPWNAM_R_GETPWUID_R \
INTERCEPT_FUNCTION(getpwnam_r); \
INTERCEPT_FUNCTION(getpwuid_r);
INTERCEPTOR(int, getgrnam_r, const char *name, void *grp,
char *buf, SIZE_T buflen, void **result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result);
COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
int res = REAL(getgrnam_r)(name, grp, buf, buflen, result);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, struct_group_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
}
return res;
}
INTERCEPTOR(int, getgrgid_r, u32 gid, void *grp,
char *buf, SIZE_T buflen, void **result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result);
int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, struct_group_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
}
return res;
}
#define INIT_GETPWNAM_R_AND_FRIENDS \
INTERCEPT_FUNCTION(getpwnam_r); \
INTERCEPT_FUNCTION(getpwuid_r); \
INTERCEPT_FUNCTION(getgrnam_r); \
INTERCEPT_FUNCTION(getgrgid_r);
#else
#define INIT_GETPWNAM_R_GETPWUID_R
#define INIT_GETPWNAM_R_AND_FRIENDS
#endif
@ -667,8 +711,8 @@ INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
INIT_SCANF; \
INIT_FREXP; \
INIT_FREXPF_FREXPL; \
INIT_GETPWNAM_GETPWUID; \
INIT_GETPWNAM_R_GETPWUID_R; \
INIT_GETPWNAM_AND_FRIENDS; \
INIT_GETPWNAM_R_AND_FRIENDS; \
INIT_CLOCK_GETTIME; \
INIT_GETITIMER; \
INIT_TIME; \

4
compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
View File

@ -58,8 +58,8 @@
# define SANITIZER_INTERCEPT_FREXP 1
# define SANITIZER_INTERCEPT_FREXPF_FREXPL SI_NOT_WINDOWS
# define SANITIZER_INTERCEPT_GETPWNAM_GETPWUID SI_NOT_WINDOWS
# define SANITIZER_INTERCEPT_GETPWNAM_R_GETPWUID_R \
# define SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS SI_NOT_WINDOWS
# define SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS \
SI_MAC || SI_LINUX_NOT_ANDROID
# define SANITIZER_INTERCEPT_CLOCK_GETTIME SI_LINUX
# define SANITIZER_INTERCEPT_GETITIMER SI_NOT_WINDOWS

2
compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cc
View File

@ -20,6 +20,7 @@
#include "sanitizer_platform_limits_posix.h"
#include <dirent.h>
#include <grp.h>
#include <pthread.h>
#include <pwd.h>
#include <signal.h>
@ -47,6 +48,7 @@ namespace __sanitizer {
unsigned struct_rusage_sz = sizeof(struct rusage);
unsigned struct_tm_sz = sizeof(struct tm);
unsigned struct_passwd_sz = sizeof(struct passwd);
unsigned struct_group_sz = sizeof(struct group);
unsigned siginfo_t_sz = sizeof(siginfo_t);
unsigned struct_sigaction_sz = sizeof(struct sigaction);
unsigned struct_itimerval_sz = sizeof(struct itimerval);

1
compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
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@ -24,6 +24,7 @@ namespace __sanitizer {
extern unsigned struct_rusage_sz;
extern unsigned struct_tm_sz;
extern unsigned struct_passwd_sz;
extern unsigned struct_group_sz;
extern unsigned struct_sigaction_sz;
extern unsigned siginfo_t_sz;
extern unsigned struct_itimerval_sz;

4
compiler-rt/lib/tsan/rtl/tsan_stat.cc
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@ -289,8 +289,12 @@ void StatOutput(u64 *stat) {
name[StatInt_frexpl] = " frexpl ";
name[StatInt_getpwnam] = " getpwnam ";
name[StatInt_getpwuid] = " getpwuid ";
name[StatInt_getgrnam] = " getgrnam ";
name[StatInt_getgrgid] = " getgrgid ";
name[StatInt_getpwnam_r] = " getpwnam_r ";
name[StatInt_getpwuid_r] = " getpwuid_r ";
name[StatInt_getgrnam_r] = " getgrnam_r ";
name[StatInt_getgrgid_r] = " getgrgid_r ";
name[StatInt_clock_getres] = " clock_getres ";
name[StatInt_clock_gettime] = " clock_gettime ";
name[StatInt_clock_settime] = " clock_settime ";

4
compiler-rt/lib/tsan/rtl/tsan_stat.h
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@ -284,8 +284,12 @@ enum StatType {
StatInt_frexpl,
StatInt_getpwnam,
StatInt_getpwuid,
StatInt_getgrnam,
StatInt_getgrgid,
StatInt_getpwnam_r,
StatInt_getpwuid_r,
StatInt_getgrnam_r,
StatInt_getgrgid_r,
StatInt_clock_getres,
StatInt_clock_gettime,
StatInt_clock_settime,