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//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Common function interceptors for tools like AddressSanitizer,
// ThreadSanitizer, MemorySanitizer, etc.
//
// This file should be included into the tool's interceptor file,
// which has to define it's own macros:
// COMMON_INTERCEPTOR_ENTER
// COMMON_INTERCEPTOR_READ_RANGE
// COMMON_INTERCEPTOR_WRITE_RANGE
// COMMON_INTERCEPTOR_FD_ACQUIRE
// COMMON_INTERCEPTOR_FD_RELEASE
// COMMON_INTERCEPTOR_SET_THREAD_NAME
//===----------------------------------------------------------------------===//
#include "interception/interception.h"
#include "sanitizer_platform_interceptors.h"
#include <stdarg.h>
#if SANITIZER_WINDOWS
#define va_copy(dst, src) ((dst) = (src))
#endif // _WIN32
#if SANITIZER_INTERCEPT_STRCASECMP
static inline int CharCaseCmp(unsigned char c1, unsigned char c2) {
int c1_low = ToLower(c1);
int c2_low = ToLower(c2);
return c1_low - c2_low;
}
INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2);
unsigned char c1 = 0, c2 = 0;
uptr i;
for (i = 0; ; i++) {
c1 = (unsigned char)s1[i];
c2 = (unsigned char)s2[i];
if (CharCaseCmp(c1, c2) != 0 || c1 == '\0')
break;
}
COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
return CharCaseCmp(c1, c2);
}
INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T n) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, n);
unsigned char c1 = 0, c2 = 0;
uptr i;
for (i = 0; i < n; i++) {
c1 = (unsigned char)s1[i];
c2 = (unsigned char)s2[i];
if (CharCaseCmp(c1, c2) != 0 || c1 == '\0')
break;
}
COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, n));
COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, n));
return CharCaseCmp(c1, c2);
}
#define INIT_STRCASECMP INTERCEPT_FUNCTION(strcasecmp)
#define INIT_STRNCASECMP INTERCEPT_FUNCTION(strncasecmp)
#else
#define INIT_STRCASECMP
#define INIT_STRNCASECMP
#endif
#if SANITIZER_INTERCEPT_FREXP
INTERCEPTOR(double, frexp, double x, int *exp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp);
double res = REAL(frexp)(x, exp);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
return res;
}
#define INIT_FREXP INTERCEPT_FUNCTION(frexp);
#else
#define INIT_FREXP
#endif // SANITIZER_INTERCEPT_FREXP
#if SANITIZER_INTERCEPT_FREXPF_FREXPL
INTERCEPTOR(float, frexpf, float x, int *exp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp);
float res = REAL(frexpf)(x, exp);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
return res;
}
INTERCEPTOR(long double, frexpl, long double x, int *exp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp);
long double res = REAL(frexpl)(x, exp);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
return res;
}
#define INIT_FREXPF_FREXPL \
INTERCEPT_FUNCTION(frexpf); \
INTERCEPT_FUNCTION(frexpl)
#else
#define INIT_FREXPF_FREXPL
#endif // SANITIZER_INTERCEPT_FREXPF_FREXPL
#if SANITIZER_INTERCEPT_READ
INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count);
SSIZE_T res = REAL(read)(fd, ptr, count);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
if (res >= 0 && fd >= 0)
COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
return res;
}
#define INIT_READ INTERCEPT_FUNCTION(read)
#else
#define INIT_READ
#endif
#if SANITIZER_INTERCEPT_PREAD
INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset);
SSIZE_T res = REAL(pread)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
if (res >= 0 && fd >= 0)
COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
return res;
}
#define INIT_PREAD INTERCEPT_FUNCTION(pread)
#else
#define INIT_PREAD
#endif
#if SANITIZER_INTERCEPT_PREAD64
INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset);
SSIZE_T res = REAL(pread64)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
if (res >= 0 && fd >= 0)
COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
return res;
}
#define INIT_PREAD64 INTERCEPT_FUNCTION(pread64)
#else
#define INIT_PREAD64
#endif
#if SANITIZER_INTERCEPT_WRITE
INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count);
if (fd >= 0)
COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
SSIZE_T res = REAL(write)(fd, ptr, count);
if (res > 0)
COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
return res;
}
#define INIT_WRITE INTERCEPT_FUNCTION(write)
#else
#define INIT_WRITE
#endif
#if SANITIZER_INTERCEPT_PWRITE
INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset);
if (fd >= 0)
COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
SSIZE_T res = REAL(pwrite)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
return res;
}
#define INIT_PWRITE INTERCEPT_FUNCTION(pwrite)
#else
#define INIT_PWRITE
#endif
#if SANITIZER_INTERCEPT_PWRITE64
INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count,
OFF64_T offset) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset);
if (fd >= 0)
COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
SSIZE_T res = REAL(pwrite64)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
return res;
}
#define INIT_PWRITE64 INTERCEPT_FUNCTION(pwrite64)
#else
#define INIT_PWRITE64
#endif
#if SANITIZER_INTERCEPT_PRCTL
INTERCEPTOR(int, prctl, int option,
unsigned long arg2, unsigned long arg3, // NOLINT
unsigned long arg4, unsigned long arg5) { // NOLINT
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5);
static const int PR_SET_NAME = 15;
int res = REAL(prctl(option, arg2, arg3, arg4, arg5));
if (option == PR_SET_NAME) {
char buff[16];
internal_strncpy(buff, (char *)arg2, 15);
buff[15] = 0;
COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff);
}
return res;
}
#define INIT_PRCTL INTERCEPT_FUNCTION(prctl)
#else
#define INIT_PRCTL
#endif // SANITIZER_INTERCEPT_PRCTL
#if SANITIZER_INTERCEPT_TIME
INTERCEPTOR(unsigned long, time, unsigned long *t) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, time, t);
unsigned long res = REAL(time)(t);
if (t && res != (unsigned long)-1) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t));
}
return res;
}
#define INIT_TIME \
INTERCEPT_FUNCTION(time);
#else
#define INIT_TIME
#endif // SANITIZER_INTERCEPT_TIME
#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
INTERCEPTOR(void *, localtime, unsigned long *timep) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep);
void *res = REAL(localtime)(timep);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_tm_sz);
}
return res;
}
INTERCEPTOR(void *, localtime_r, unsigned long *timep, void *result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result);
void *res = REAL(localtime_r)(timep, result);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_tm_sz);
}
return res;
}
INTERCEPTOR(void *, gmtime, unsigned long *timep) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep);
void *res = REAL(gmtime)(timep);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_tm_sz);
}
return res;
}
INTERCEPTOR(void *, gmtime_r, unsigned long *timep, void *result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result);
void *res = REAL(gmtime_r)(timep, result);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_tm_sz);
}
return res;
}
INTERCEPTOR(char *, ctime, unsigned long *timep) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep);
char *res = REAL(ctime)(timep);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
}
return res;
}
INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result);
char *res = REAL(ctime_r)(timep, result);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
}
return res;
}
INTERCEPTOR(char *, asctime, void *tm) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm);
char *res = REAL(asctime)(tm);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, struct_tm_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
}
return res;
}
INTERCEPTOR(char *, asctime_r, void *tm, char *result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result);
char *res = REAL(asctime_r)(tm, result);
if (res) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, struct_tm_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
}
return res;
}
#define INIT_LOCALTIME_AND_FRIENDS \
INTERCEPT_FUNCTION(localtime); \
INTERCEPT_FUNCTION(localtime_r); \
INTERCEPT_FUNCTION(gmtime); \
INTERCEPT_FUNCTION(gmtime_r); \
INTERCEPT_FUNCTION(ctime); \
INTERCEPT_FUNCTION(ctime_r); \
INTERCEPT_FUNCTION(asctime); \
INTERCEPT_FUNCTION(asctime_r);
#else
#define INIT_LOCALTIME_AND_FRIENDS
#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
#if SANITIZER_INTERCEPT_SCANF
#include "sanitizer_common_interceptors_scanf.inc"
#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
va_list aq; \
va_copy(aq, ap); \
int res = REAL(vname)(__VA_ARGS__); \
if (res > 0) \
scanf_common(ctx, res, allowGnuMalloc, format, aq); \
va_end(aq); \
return res; \
}
INTERCEPTOR(int, vscanf, const char *format, va_list ap)
VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap)
INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap)
VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap)
INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap)
VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap)
#if SANITIZER_INTERCEPT_ISOC99_SCANF
INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap)
VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap)
INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format,
va_list ap)
VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap)
INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap)
VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap)
#endif // SANITIZER_INTERCEPT_ISOC99_SCANF
#define SCANF_INTERCEPTOR_IMPL(name, vname, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, name, __VA_ARGS__); \
va_list ap; \
va_start(ap, format); \
int res = vname(__VA_ARGS__, ap); \
va_end(ap); \
return res; \
}
INTERCEPTOR(int, scanf, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(scanf, vscanf, format)
INTERCEPTOR(int, fscanf, void *stream, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format)
INTERCEPTOR(int, sscanf, const char *str, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format)
#if SANITIZER_INTERCEPT_ISOC99_SCANF
INTERCEPTOR(int, __isoc99_scanf, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format)
INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format)
INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...)
SCANF_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
#endif
#define INIT_SCANF \
INTERCEPT_FUNCTION(scanf); \
INTERCEPT_FUNCTION(sscanf); \
INTERCEPT_FUNCTION(fscanf); \
INTERCEPT_FUNCTION(vscanf); \
INTERCEPT_FUNCTION(vsscanf); \
INTERCEPT_FUNCTION(vfscanf); \
INTERCEPT_FUNCTION(__isoc99_scanf); \
INTERCEPT_FUNCTION(__isoc99_sscanf); \
INTERCEPT_FUNCTION(__isoc99_fscanf); \
INTERCEPT_FUNCTION(__isoc99_vscanf); \
INTERCEPT_FUNCTION(__isoc99_vsscanf); \
INTERCEPT_FUNCTION(__isoc99_vfscanf);
#else
#define INIT_SCANF
#endif
#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
INTERCEPTOR(void *, getpwnam, const char *name) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name);
COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
void *res = REAL(getpwnam)(name);
if (res != 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_passwd_sz);
return res;
}
INTERCEPTOR(void *, getpwuid, u32 uid) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid);
void *res = REAL(getpwuid)(uid);
if (res != 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, struct_passwd_sz);
return res;
}
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_AND_FRIENDS
#endif
#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;
COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result);
COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, struct_passwd_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
}
return res;
}
INTERCEPTOR(int, getpwuid_r, u32 uid, void *pwd,
char *buf, SIZE_T buflen, void **result) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result);
int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, struct_passwd_sz);
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
}
return res;
}
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_AND_FRIENDS
#endif
#if SANITIZER_INTERCEPT_CLOCK_GETTIME
INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp);
int res = REAL(clock_getres)(clk_id, tp);
if (!res && tp) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
}
return res;
}
INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp);
int res = REAL(clock_gettime)(clk_id, tp);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
}
return res;
}
INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp);
COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz);
return REAL(clock_settime)(clk_id, tp);
}
#define INIT_CLOCK_GETTIME \
INTERCEPT_FUNCTION(clock_getres); \
INTERCEPT_FUNCTION(clock_gettime); \
INTERCEPT_FUNCTION(clock_settime);
#else
#define INIT_CLOCK_GETTIME
#endif
#if SANITIZER_INTERCEPT_GETITIMER
INTERCEPTOR(int, getitimer, int which, void *curr_value) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value);
int res = REAL(getitimer)(which, curr_value);
if (!res) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz);
}
return res;
}
INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value);
COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerval_sz);
int res = REAL(setitimer)(which, new_value, old_value);
if (!res && old_value) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz);
}
return res;
}
#define INIT_GETITIMER \
INTERCEPT_FUNCTION(getitimer); \
INTERCEPT_FUNCTION(setitimer);
#else
#define INIT_GETITIMER
#endif
#if SANITIZER_INTERCEPT_GLOB
struct sanitizer_glob_t {
SIZE_T gl_pathc;
char **gl_pathv;
};
static void unpoison_glob_t(void *ctx, sanitizer_glob_t *pglob) {
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob));
// +1 for NULL pointer at the end.
COMMON_INTERCEPTOR_WRITE_RANGE(
ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv));
for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) {
char *p = pglob->gl_pathv[i];
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, REAL(strlen)(p) + 1);
}
}
INTERCEPTOR(int, glob, const char *pattern, int flags,
int (*errfunc)(const char *epath, int eerrno),
sanitizer_glob_t *pglob) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
int res = REAL(glob)(pattern, flags, errfunc, pglob);
if (res == 0)
unpoison_glob_t(ctx, pglob);
return res;
}
INTERCEPTOR(int, glob64, const char *pattern, int flags,
int (*errfunc)(const char *epath, int eerrno),
sanitizer_glob_t *pglob) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob);
int res = REAL(glob64)(pattern, flags, errfunc, pglob);
if (res == 0)
unpoison_glob_t(ctx, pglob);
return res;
}
#define INIT_GLOB \
INTERCEPT_FUNCTION(glob); \
INTERCEPT_FUNCTION(glob64);
#else // SANITIZER_INTERCEPT_GLOB
#define INIT_GLOB
#endif // SANITIZER_INTERCEPT_GLOB
#if SANITIZER_INTERCEPT_WAIT
// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version
// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for
// details.
INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, wait, status);
int res = REAL(wait)(status);
if (res != -1 && status)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
return res;
}
INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop, int options) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options);
int res = REAL(waitid)(idtype, id, infop, options);
if (res != -1 && infop)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz);
return res;
}
INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options);
int res = REAL(waitpid)(pid, status, options);
if (res != -1 && status)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
return res;
}
INTERCEPTOR(int, wait3, int *status, int options, void *rusage) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage);
int res = REAL(wait3)(status, options, rusage);
if (res != -1) {
if (status)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
if (rusage)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
}
return res;
}
INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage);
int res = REAL(wait4)(pid, status, options, rusage);
if (res != -1) {
if (status)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
if (rusage)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
}
return res;
}
#define INIT_WAIT \
INTERCEPT_FUNCTION(wait); \
INTERCEPT_FUNCTION(waitid); \
INTERCEPT_FUNCTION(waitpid); \
INTERCEPT_FUNCTION(wait3); \
INTERCEPT_FUNCTION(wait4);
#else
#define INIT_WAIT
#endif
#if SANITIZER_INTERCEPT_INET
INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size);
uptr sz = __sanitizer_in_addr_sz(af);
if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz);
// FIXME: figure out read size based on the address family.
char *res = REAL(inet_ntop)(af, src, dst, size);
if (res)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
return res;
}
INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) {
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst);
// FIXME: figure out read size based on the address family.
int res = REAL(inet_pton)(af, src, dst);
if (res == 1) {
uptr sz = __sanitizer_in_addr_sz(af);
if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
}
return res;
}
#define INIT_INET \
INTERCEPT_FUNCTION(inet_ntop); \
INTERCEPT_FUNCTION(inet_pton);
#else
#define INIT_INET
#endif
#define SANITIZER_COMMON_INTERCEPTORS_INIT \
INIT_STRCASECMP; \
INIT_STRNCASECMP; \
INIT_READ; \
INIT_PREAD; \
INIT_PREAD64; \
INIT_PRCTL; \
INIT_WRITE; \
INIT_PWRITE; \
INIT_PWRITE64; \
INIT_LOCALTIME_AND_FRIENDS; \
INIT_SCANF; \
INIT_FREXP; \
INIT_FREXPF_FREXPL; \
INIT_GETPWNAM_AND_FRIENDS; \
INIT_GETPWNAM_R_AND_FRIENDS; \
INIT_CLOCK_GETTIME; \
INIT_GETITIMER; \
INIT_TIME; \
INIT_GLOB; \
INIT_WAIT; \
INIT_INET;
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