#include <stdarg.h>
-#ifdef _WIN32
+#if SANITIZER_WINDOWS
#define va_copy(dst, src) ((dst) = (src))
#endif // _WIN32
+#if SANITIZER_INTERCEPT_STRCMP
+static inline int CharCmpX(unsigned char c1, unsigned char c2) {
+ return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1;
+}
+
+INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2);
+ unsigned char c1, c2;
+ uptr i;
+ for (i = 0; ; i++) {
+ c1 = (unsigned char)s1[i];
+ c2 = (unsigned char)s2[i];
+ if (c1 != c2 || c1 == '\0') break;
+ }
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
+ return CharCmpX(c1, c2);
+}
+
+INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size);
+ unsigned char c1 = 0, c2 = 0;
+ uptr i;
+ for (i = 0; i < size; i++) {
+ c1 = (unsigned char)s1[i];
+ c2 = (unsigned char)s2[i];
+ if (c1 != c2 || c1 == '\0') break;
+ }
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size));
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size));
+ return CharCmpX(c1, c2);
+}
+
+#define INIT_STRCMP INTERCEPT_FUNCTION(strcmp)
+#define INIT_STRNCMP INTERCEPT_FUNCTION(strncmp)
+#else
+#define INIT_STRCMP
+#define INIT_STRNCMP
+#endif
+
+#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 SI_NOT_WINDOWS
+static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec,
+ SIZE_T iovlen, SIZE_T maxlen) {
+ for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
+ SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz);
+ maxlen -= sz;
+ }
+}
+
+static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec,
+ SIZE_T iovlen, SIZE_T maxlen) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen);
+ for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
+ SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz);
+ maxlen -= sz;
+ }
+}
+#endif
+
#if SANITIZER_INTERCEPT_READ
INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
void *ctx;
#define INIT_PREAD64
#endif
+#if SANITIZER_INTERCEPT_READV
+INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov,
+ int iovcnt) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt);
+ SSIZE_T res = REAL(readv)(fd, iov, iovcnt);
+ if (res > 0) write_iovec(ctx, iov, iovcnt, res);
+ if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+ return res;
+}
+#define INIT_READV INTERCEPT_FUNCTION(readv)
+#else
+#define INIT_READV
+#endif
+
+#if SANITIZER_INTERCEPT_PREADV
+INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt,
+ OFF_T offset) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset);
+ SSIZE_T res = REAL(preadv)(fd, iov, iovcnt, offset);
+ if (res > 0) write_iovec(ctx, iov, iovcnt, res);
+ if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+ return res;
+}
+#define INIT_PREADV INTERCEPT_FUNCTION(preadv)
+#else
+#define INIT_PREADV
+#endif
+
+#if SANITIZER_INTERCEPT_PREADV64
+INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt,
+ OFF64_T offset) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset);
+ SSIZE_T res = REAL(preadv64)(fd, iov, iovcnt, offset);
+ if (res > 0) write_iovec(ctx, iov, iovcnt, res);
+ if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+ return res;
+}
+#define INIT_PREADV64 INTERCEPT_FUNCTION(preadv64)
+#else
+#define INIT_PREADV64
+#endif
+
#if SANITIZER_INTERCEPT_WRITE
INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
void *ctx;
if (fd >= 0)
COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
SSIZE_T res = REAL(write)(fd, ptr, count);
+ // FIXME: this check should be _before_ the call to REAL(write), not after
if (res > 0)
COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
return res;
#define INIT_PWRITE64
#endif
+#if SANITIZER_INTERCEPT_WRITEV
+INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov,
+ int iovcnt) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt);
+ if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
+ SSIZE_T res = REAL(writev)(fd, iov, iovcnt);
+ if (res > 0) read_iovec(ctx, iov, iovcnt, res);
+ return res;
+}
+#define INIT_WRITEV INTERCEPT_FUNCTION(writev)
+#else
+#define INIT_WRITEV
+#endif
+
+#if SANITIZER_INTERCEPT_PWRITEV
+INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt,
+ OFF_T offset) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset);
+ if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
+ SSIZE_T res = REAL(pwritev)(fd, iov, iovcnt, offset);
+ if (res > 0) read_iovec(ctx, iov, iovcnt, res);
+ return res;
+}
+#define INIT_PWRITEV INTERCEPT_FUNCTION(pwritev)
+#else
+#define INIT_PWRITEV
+#endif
+
+#if SANITIZER_INTERCEPT_PWRITEV64
+INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt,
+ OFF64_T offset) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset);
+ if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
+ SSIZE_T res = REAL(pwritev64)(fd, iov, iovcnt, offset);
+ if (res > 0) read_iovec(ctx, iov, iovcnt, res);
+ return res;
+}
+#define INIT_PWRITEV64 INTERCEPT_FUNCTION(pwritev64)
+#else
+#define INIT_PWRITEV64
+#endif
+
#if SANITIZER_INTERCEPT_PRCTL
INTERCEPTOR(int, prctl, int option,
unsigned long arg2, unsigned long arg3, // NOLINT
#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;
#define SCANF_INTERCEPTOR_IMPL(name, vname, ...) \
{ \
void *ctx; \
- COMMON_INTERCEPTOR_ENTER(ctx, name, __VA_ARGS__); \
va_list ap; \
va_start(ap, format); \
+ COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \
int res = vname(__VA_ARGS__, ap); \
va_end(ap); \
return res; \
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);
+#endif
+#if SANITIZER_INTERCEPT_SCANF
+#define INIT_SCANF \
+ INTERCEPT_FUNCTION(scanf); \
+ INTERCEPT_FUNCTION(sscanf); \
+ INTERCEPT_FUNCTION(fscanf); \
+ INTERCEPT_FUNCTION(vscanf); \
+ INTERCEPT_FUNCTION(vsscanf); \
+ INTERCEPT_FUNCTION(vfscanf);
#else
#define INIT_SCANF
#endif
-#define SANITIZER_COMMON_INTERCEPTORS_INIT \
- INIT_READ; \
- INIT_PREAD; \
- INIT_PREAD64; \
- INIT_PRCTL; \
- INIT_WRITE; \
- INIT_PWRITE; \
- INIT_PWRITE64; \
- INIT_LOCALTIME_AND_FRIENDS; \
- INIT_SCANF;
+#if SANITIZER_INTERCEPT_ISOC99_SCANF
+#define INIT_ISOC99_SCANF \
+ 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_ISOC99_SCANF
+#endif
+
+#if SANITIZER_INTERCEPT_IOCTL
+#include "sanitizer_common_interceptors_ioctl.inc"
+INTERCEPTOR(int, ioctl, int d, unsigned request, void *arg) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg);
+
+ CHECK(ioctl_initialized);
+
+ // Note: TSan does not use common flags, and they are zero-initialized.
+ // This effectively disables ioctl handling in TSan.
+ if (!common_flags()->handle_ioctl)
+ return REAL(ioctl)(d, request, arg);
+
+ const ioctl_desc *desc = ioctl_lookup(request);
+ if (!desc)
+ Printf("WARNING: unknown ioctl %x\n", request);
+
+ if (desc)
+ ioctl_common_pre(ctx, desc, d, request, arg);
+ int res = REAL(ioctl)(d, request, arg);
+ // FIXME: some ioctls have different return values for success and failure.
+ if (desc && res != -1)
+ ioctl_common_post(ctx, desc, res, d, request, arg);
+ return res;
+}
+#define INIT_IOCTL \
+ ioctl_init(); \
+ INTERCEPT_FUNCTION(ioctl);
+#else
+#define INIT_IOCTL
+#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 && curr_value) {
+ 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);
+ if (new_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
+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.
+ if (pglob->gl_pathv)
+ 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);
+ }
+}
+
+static THREADLOCAL __sanitizer_glob_t* pglob_copy;
+static THREADLOCAL void* glob_ctx;
+
+static void wrapped_gl_closedir(void *dir) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(glob_ctx, 1);
+ pglob_copy->gl_closedir(dir);
+}
+
+static void *wrapped_gl_readdir(void *dir) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(glob_ctx, 1);
+ return pglob_copy->gl_readdir(dir);
+}
+
+static void *wrapped_gl_opendir(const char *s) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(glob_ctx, 1);
+ COMMON_INTERCEPTOR_WRITE_RANGE(glob_ctx, s, REAL(strlen)(s) + 1);
+ return pglob_copy->gl_opendir(s);
+}
+
+static int wrapped_gl_lstat(const char *s, void *st) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(glob_ctx, 2);
+ COMMON_INTERCEPTOR_WRITE_RANGE(glob_ctx, s, REAL(strlen)(s) + 1);
+ return pglob_copy->gl_lstat(s, st);
+}
+
+static int wrapped_gl_stat(const char *s, void *st) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(glob_ctx, 2);
+ COMMON_INTERCEPTOR_WRITE_RANGE(glob_ctx, s, REAL(strlen)(s) + 1);
+ return pglob_copy->gl_stat(s, st);
+}
+
+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);
+ __sanitizer_glob_t glob_copy = {0, 0, 0, 0, wrapped_gl_closedir,
+ wrapped_gl_readdir, wrapped_gl_opendir,
+ wrapped_gl_lstat, wrapped_gl_stat};
+ if (flags & glob_altdirfunc) {
+ Swap(pglob->gl_closedir, glob_copy.gl_closedir);
+ Swap(pglob->gl_readdir, glob_copy.gl_readdir);
+ Swap(pglob->gl_opendir, glob_copy.gl_opendir);
+ Swap(pglob->gl_lstat, glob_copy.gl_lstat);
+ Swap(pglob->gl_stat, glob_copy.gl_stat);
+ pglob_copy = &glob_copy;
+ glob_ctx = ctx;
+ }
+ int res = REAL(glob)(pattern, flags, errfunc, pglob);
+ if (flags & glob_altdirfunc) {
+ Swap(pglob->gl_closedir, glob_copy.gl_closedir);
+ Swap(pglob->gl_readdir, glob_copy.gl_readdir);
+ Swap(pglob->gl_opendir, glob_copy.gl_opendir);
+ Swap(pglob->gl_lstat, glob_copy.gl_lstat);
+ Swap(pglob->gl_stat, glob_copy.gl_stat);
+ }
+ pglob_copy = 0;
+ glob_ctx = 0;
+ if ((!res || res == glob_nomatch) && pglob) 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);
+ __sanitizer_glob_t glob_copy = {0, 0, 0, 0, wrapped_gl_closedir,
+ wrapped_gl_readdir, wrapped_gl_opendir,
+ wrapped_gl_lstat, wrapped_gl_stat};
+ if (flags & glob_altdirfunc) {
+ Swap(pglob->gl_closedir, glob_copy.gl_closedir);
+ Swap(pglob->gl_readdir, glob_copy.gl_readdir);
+ Swap(pglob->gl_opendir, glob_copy.gl_opendir);
+ Swap(pglob->gl_lstat, glob_copy.gl_lstat);
+ Swap(pglob->gl_stat, glob_copy.gl_stat);
+ pglob_copy = &glob_copy;
+ glob_ctx = ctx;
+ }
+ int res = REAL(glob64)(pattern, flags, errfunc, pglob);
+ if (flags & glob_altdirfunc) {
+ Swap(pglob->gl_closedir, glob_copy.gl_closedir);
+ Swap(pglob->gl_readdir, glob_copy.gl_readdir);
+ Swap(pglob->gl_opendir, glob_copy.gl_opendir);
+ Swap(pglob->gl_lstat, glob_copy.gl_lstat);
+ Swap(pglob->gl_stat, glob_copy.gl_stat);
+ }
+ pglob_copy = 0;
+ glob_ctx = 0;
+ if ((!res || res == glob_nomatch) && pglob) 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
+
+#if SANITIZER_INTERCEPT_INET
+INTERCEPTOR(int, inet_aton, const char *cp, void *dst) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst);
+ if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, REAL(strlen)(cp) + 1);
+ int res = REAL(inet_aton)(cp, dst);
+ if (res != 0) {
+ uptr sz = __sanitizer_in_addr_sz(af_inet);
+ if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
+ }
+ return res;
+}
+#define INIT_INET_ATON INTERCEPT_FUNCTION(inet_aton);
+#else
+#define INIT_INET_ATON
+#endif
+
+#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM
+INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param);
+ int res = REAL(pthread_getschedparam)(thread, policy, param);
+ if (res == 0) {
+ if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy));
+ if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param));
+ }
+ return res;
+}
+#define INIT_PTHREAD_GETSCHEDPARAM INTERCEPT_FUNCTION(pthread_getschedparam);
+#else
+#define INIT_PTHREAD_GETSCHEDPARAM
+#endif
+
+#if SANITIZER_INTERCEPT_GETADDRINFO
+INTERCEPTOR(int, getaddrinfo, char *node, char *service,
+ struct __sanitizer_addrinfo *hints,
+ struct __sanitizer_addrinfo **out) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out);
+ if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, REAL(strlen)(node) + 1);
+ if (service)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, service, REAL(strlen)(service) + 1);
+ if (hints)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo));
+ int res = REAL(getaddrinfo)(node, service, hints, out);
+ if (res == 0 && out) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out));
+ struct __sanitizer_addrinfo *p = *out;
+ while (p) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
+ if (p->ai_addr)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen);
+ if (p->ai_canonname)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname,
+ REAL(strlen)(p->ai_canonname) + 1);
+ p = p->ai_next;
+ }
+ }
+ return res;
+}
+#define INIT_GETADDRINFO INTERCEPT_FUNCTION(getaddrinfo);
+#else
+#define INIT_GETADDRINFO
+#endif
+
+#if SANITIZER_INTERCEPT_GETNAMEINFO
+INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host,
+ unsigned hostlen, char *serv, unsigned servlen, int flags) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen,
+ serv, servlen, flags);
+ // FIXME: consider adding READ_RANGE(sockaddr, salen)
+ // There is padding in in_addr that may make this too noisy
+ int res =
+ REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags);
+ if (res == 0) {
+ if (host && hostlen)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, REAL(strlen)(host) + 1);
+ if (serv && servlen)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, REAL(strlen)(serv) + 1);
+ }
+ return res;
+}
+#define INIT_GETNAMEINFO INTERCEPT_FUNCTION(getnameinfo);
+#else
+#define INIT_GETNAMEINFO
+#endif
+
+#if SANITIZER_INTERCEPT_GETSOCKNAME
+INTERCEPTOR(int, getsockname, int sock_fd, void *addr, int *addrlen) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
+ int addrlen_in = *addrlen;
+ int res = REAL(getsockname)(sock_fd, addr, addrlen);
+ if (res == 0) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addrlen_in, *addrlen));
+ }
+ return res;
+}
+#define INIT_GETSOCKNAME INTERCEPT_FUNCTION(getsockname);
+#else
+#define INIT_GETSOCKNAME
+#endif
+
+#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R
+static void write_hostent(void *ctx, struct __sanitizer_hostent *h) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent));
+ if (h->h_name)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, REAL(strlen)(h->h_name) + 1);
+ char **p = h->h_aliases;
+ while (*p) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
+ ++p;
+ }
+ COMMON_INTERCEPTOR_WRITE_RANGE(
+ ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases));
+ p = h->h_addr_list;
+ while (*p) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length);
+ ++p;
+ }
+ COMMON_INTERCEPTOR_WRITE_RANGE(
+ ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list));
+}
+#endif
+
+#if SANITIZER_INTERCEPT_GETHOSTBYNAME
+INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name);
+ struct __sanitizer_hostent *res = REAL(gethostbyname)(name);
+ if (res) write_hostent(ctx, res);
+ return res;
+}
+
+INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len,
+ int type) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
+ struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type);
+ if (res) write_hostent(ctx, res);
+ return res;
+}
+
+INTERCEPTOR(struct __sanitizer_hostent *, gethostent) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostent);
+ struct __sanitizer_hostent *res = REAL(gethostent)();
+ if (res) write_hostent(ctx, res);
+ return res;
+}
+
+INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af);
+ struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af);
+ if (res) write_hostent(ctx, res);
+ return res;
+}
+#define INIT_GETHOSTBYNAME \
+ INTERCEPT_FUNCTION(gethostent); \
+ INTERCEPT_FUNCTION(gethostbyaddr); \
+ INTERCEPT_FUNCTION(gethostbyname); \
+ INTERCEPT_FUNCTION(gethostbyname2);
+#else
+#define INIT_GETHOSTBYNAME
+#endif
+
+#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R
+INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf,
+ SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result,
+ h_errnop);
+ int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop);
+ if (res == 0) {
+ if (result) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result) write_hostent(ctx, *result);
+ }
+ if (h_errnop)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
+ }
+ return res;
+}
+
+INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type,
+ struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
+ __sanitizer_hostent **result, int *h_errnop) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf,
+ buflen, result, h_errnop);
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
+ int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result,
+ h_errnop);
+ if (res == 0) {
+ if (result) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result) write_hostent(ctx, *result);
+ }
+ if (h_errnop)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
+ }
+ return res;
+}
+
+INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret,
+ char *buf, SIZE_T buflen, __sanitizer_hostent **result,
+ int *h_errnop) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result,
+ h_errnop);
+ int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop);
+ if (res == 0) {
+ if (result) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result) write_hostent(ctx, *result);
+ }
+ if (h_errnop)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
+ }
+ return res;
+}
+
+INTERCEPTOR(int, gethostbyname2_r, char *name, int af,
+ struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
+ __sanitizer_hostent **result, int *h_errnop) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen,
+ result, h_errnop);
+ int res =
+ REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop);
+ if (res == 0) {
+ if (result) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result) write_hostent(ctx, *result);
+ }
+ if (h_errnop)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
+ }
+ return res;
+}
+#define INIT_GETHOSTBYNAME_R \
+ INTERCEPT_FUNCTION(gethostent_r); \
+ INTERCEPT_FUNCTION(gethostbyaddr_r); \
+ INTERCEPT_FUNCTION(gethostbyname_r); \
+ INTERCEPT_FUNCTION(gethostbyname2_r);
+#else
+#define INIT_GETHOSTBYNAME_R
+#endif
+
+#if SANITIZER_INTERCEPT_GETSOCKOPT
+INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval,
+ int *optlen) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval,
+ optlen);
+ if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen));
+ int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen);
+ if (res == 0)
+ if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen);
+ return res;
+}
+#define INIT_GETSOCKOPT INTERCEPT_FUNCTION(getsockopt);
+#else
+#define INIT_GETSOCKOPT
+#endif
+
+#if SANITIZER_INTERCEPT_ACCEPT
+INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen);
+ unsigned addrlen0;
+ if (addrlen) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
+ addrlen0 = *addrlen;
+ }
+ int fd2 = REAL(accept)(fd, addr, addrlen);
+ if (fd2 >= 0) {
+ if (fd >= 0)
+ COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
+ if (addr && addrlen)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
+ }
+ return fd2;
+}
+#define INIT_ACCEPT INTERCEPT_FUNCTION(accept);
+#else
+#define INIT_ACCEPT
+#endif
+
+#if SANITIZER_INTERCEPT_ACCEPT4
+INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f);
+ unsigned addrlen0;
+ if (addrlen) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
+ addrlen0 = *addrlen;
+ }
+ int fd2 = REAL(accept4)(fd, addr, addrlen, f);
+ if (fd2 >= 0) {
+ if (fd >= 0)
+ COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
+ if (addr && addrlen)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
+ }
+ return fd2;
+}
+#define INIT_ACCEPT4 INTERCEPT_FUNCTION(accept4);
+#else
+#define INIT_ACCEPT4
+#endif
+
+#if SANITIZER_INTERCEPT_MODF
+INTERCEPTOR(double, modf, double x, double *iptr) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr);
+ double res = REAL(modf)(x, iptr);
+ if (iptr) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
+ }
+ return res;
+}
+INTERCEPTOR(float, modff, float x, float *iptr) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr);
+ float res = REAL(modff)(x, iptr);
+ if (iptr) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
+ }
+ return res;
+}
+INTERCEPTOR(long double, modfl, long double x, long double *iptr) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr);
+ long double res = REAL(modfl)(x, iptr);
+ if (iptr) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
+ }
+ return res;
+}
+#define INIT_MODF \
+ INTERCEPT_FUNCTION(modf); \
+ INTERCEPT_FUNCTION(modff); \
+ INTERCEPT_FUNCTION(modfl);
+#else
+#define INIT_MODF
+#endif
+
+#if SANITIZER_INTERCEPT_RECVMSG
+static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
+ SSIZE_T maxlen) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg));
+ if (msg->msg_name)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name,
+ REAL(strlen)((char *)msg->msg_name) + 1);
+ if (msg->msg_iov)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov,
+ sizeof(*msg->msg_iov) * msg->msg_iovlen);
+ write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen);
+ if (msg->msg_control)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen);
+}
+
+INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg,
+ int flags) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags);
+ SSIZE_T res = REAL(recvmsg)(fd, msg, flags);
+ if (res >= 0) {
+ if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
+ if (msg) write_msghdr(ctx, msg, res);
+ }
+ return res;
+}
+#define INIT_RECVMSG INTERCEPT_FUNCTION(recvmsg);
+#else
+#define INIT_RECVMSG
+#endif
+
+#if SANITIZER_INTERCEPT_GETPEERNAME
+INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen);
+ unsigned addr_sz;
+ if (addrlen) addr_sz = *addrlen;
+ int res = REAL(getpeername)(sockfd, addr, addrlen);
+ if (!res && addr && addrlen)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
+ return res;
+}
+#define INIT_GETPEERNAME INTERCEPT_FUNCTION(getpeername);
+#else
+#define INIT_GETPEERNAME
+#endif
+
+#if SANITIZER_INTERCEPT_SYSINFO
+INTERCEPTOR(int, sysinfo, void *info) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info);
+ int res = REAL(sysinfo)(info);
+ if (!res && info)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz);
+ return res;
+}
+#define INIT_SYSINFO INTERCEPT_FUNCTION(sysinfo);
+#else
+#define INIT_SYSINFO
+#endif
+
+#if SANITIZER_INTERCEPT_READDIR
+INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp);
+ __sanitizer_dirent *res = REAL(readdir)(dirp);
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen);
+ return res;
+}
+
+INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry,
+ __sanitizer_dirent **result) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result);
+ int res = REAL(readdir_r)(dirp, entry, result);
+ if (!res) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
+ }
+ return res;
+}
+
+#define INIT_READDIR \
+ INTERCEPT_FUNCTION(readdir); \
+ INTERCEPT_FUNCTION(readdir_r);
+#else
+#define INIT_READDIR
+#endif
+
+#if SANITIZER_INTERCEPT_READDIR64
+INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp);
+ __sanitizer_dirent64 *res = REAL(readdir64)(dirp);
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen);
+ return res;
+}
+
+INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry,
+ __sanitizer_dirent64 **result) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result);
+ int res = REAL(readdir64_r)(dirp, entry, result);
+ if (!res) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
+ if (*result)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
+ }
+ return res;
+}
+#define INIT_READDIR64 \
+ INTERCEPT_FUNCTION(readdir64); \
+ INTERCEPT_FUNCTION(readdir64_r);
+#else
+#define INIT_READDIR64
+#endif
+
+#if SANITIZER_INTERCEPT_PTRACE
+INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data);
+
+ if (data) {
+ if (request == ptrace_setregs)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_regs_struct_sz);
+ else if (request == ptrace_setfpregs)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpregs_struct_sz);
+ else if (request == ptrace_setfpxregs)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
+ else if (request == ptrace_setsiginfo)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, data, siginfo_t_sz);
+ else if (request == ptrace_setregset) {
+ __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, iov->iov_base, iov->iov_len);
+ }
+ }
+
+ uptr res = REAL(ptrace)(request, pid, addr, data);
+
+ if (!res && data) {
+ // Note that PEEK* requests assing different meaning to the return value.
+ // This function does not handle them (nor does it need to).
+ if (request == ptrace_getregs)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_regs_struct_sz);
+ else if (request == ptrace_getfpregs)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpregs_struct_sz);
+ else if (request == ptrace_getfpxregs)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
+ else if (request == ptrace_getsiginfo)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, siginfo_t_sz);
+ else if (request == ptrace_getregset) {
+ __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iov->iov_base, iov->iov_len);
+ }
+ }
+ return res;
+}
+
+#define INIT_PTRACE \
+ INTERCEPT_FUNCTION(ptrace);
+#else
+#define INIT_PTRACE
+#endif
+
+#if SANITIZER_INTERCEPT_SETLOCALE
+INTERCEPTOR(char *, setlocale, int category, char *locale) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale);
+ if (locale)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, REAL(strlen)(locale) + 1);
+ char *res = REAL(setlocale)(category, locale);
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+
+#define INIT_SETLOCALE \
+ INTERCEPT_FUNCTION(setlocale);
+#else
+#define INIT_SETLOCALE
+#endif
+
+#if SANITIZER_INTERCEPT_GETCWD
+INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size);
+ char *res = REAL(getcwd)(buf, size);
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+#define INIT_GETCWD \
+ INTERCEPT_FUNCTION(getcwd);
+#else
+#define INIT_GETCWD
+#endif
+
+#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME
+INTERCEPTOR(char *, get_current_dir_name) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name);
+ char *res = REAL(get_current_dir_name)();
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+
+#define INIT_GET_CURRENT_DIR_NAME \
+ INTERCEPT_FUNCTION(get_current_dir_name);
+#else
+#define INIT_GET_CURRENT_DIR_NAME
+#endif
+
+#if SANITIZER_INTERCEPT_STRTOIMAX
+INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base);
+ INTMAX_T res = REAL(strtoimax)(nptr, endptr, base);
+ if (endptr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
+ return res;
+}
+
+INTERCEPTOR(INTMAX_T, strtoumax, const char *nptr, char **endptr, int base) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base);
+ INTMAX_T res = REAL(strtoumax)(nptr, endptr, base);
+ if (endptr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
+ return res;
+}
+
+#define INIT_STRTOIMAX \
+ INTERCEPT_FUNCTION(strtoimax); \
+ INTERCEPT_FUNCTION(strtoumax);
+#else
+#define INIT_STRTOIMAX
+#endif
+
+#if SANITIZER_INTERCEPT_MBSTOWCS
+INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len);
+ SIZE_T res = REAL(mbstowcs)(dest, src, len);
+ if (res != (SIZE_T) - 1 && dest) {
+ SIZE_T write_cnt = res + (res < len);
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
+ }
+ return res;
+}
+
+INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len,
+ void *ps) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps);
+ if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
+ if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
+ SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps);
+ if (res != (SIZE_T)(-1) && dest && src) {
+ // This function, and several others, may or may not write the terminating
+ // \0 character. They write it iff they clear *src.
+ SIZE_T write_cnt = res + !*src;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
+ }
+ return res;
+}
+
+#define INIT_MBSTOWCS \
+ INTERCEPT_FUNCTION(mbstowcs); \
+ INTERCEPT_FUNCTION(mbsrtowcs);
+#else
+#define INIT_MBSTOWCS
+#endif
+
+#if SANITIZER_INTERCEPT_MBSNRTOWCS
+INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms,
+ SIZE_T len, void *ps) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps);
+ if (src) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
+ if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
+ }
+ if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
+ SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps);
+ if (res != (SIZE_T)(-1) && dest && src) {
+ SIZE_T write_cnt = res + !*src;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
+ }
+ return res;
+}
+
+#define INIT_MBSNRTOWCS INTERCEPT_FUNCTION(mbsnrtowcs);
+#else
+#define INIT_MBSNRTOWCS
+#endif
+
+#if SANITIZER_INTERCEPT_WCSTOMBS
+INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len);
+ SIZE_T res = REAL(wcstombs)(dest, src, len);
+ if (res != (SIZE_T) - 1 && dest) {
+ SIZE_T write_cnt = res + (res < len);
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
+ }
+ return res;
+}
+
+INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len,
+ void *ps) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps);
+ if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
+ if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
+ SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps);
+ if (res != (SIZE_T) - 1 && dest && src) {
+ SIZE_T write_cnt = res + !*src;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
+ }
+ return res;
+}
+
+#define INIT_WCSTOMBS \
+ INTERCEPT_FUNCTION(wcstombs); \
+ INTERCEPT_FUNCTION(wcsrtombs);
+#else
+#define INIT_WCSTOMBS
+#endif
+
+#if SANITIZER_INTERCEPT_WCSNRTOMBS
+INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms,
+ SIZE_T len, void *ps) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps);
+ if (src) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
+ if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
+ }
+ if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
+ SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps);
+ if (res != (SIZE_T) - 1 && dest && src) {
+ SIZE_T write_cnt = res + !*src;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
+ }
+ return res;
+}
+
+#define INIT_WCSNRTOMBS INTERCEPT_FUNCTION(wcsnrtombs);
+#else
+#define INIT_WCSNRTOMBS
+#endif
+
+
+#if SANITIZER_INTERCEPT_TCGETATTR
+INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p);
+ int res = REAL(tcgetattr)(fd, termios_p);
+ if (!res && termios_p)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz);
+ return res;
+}
+
+#define INIT_TCGETATTR INTERCEPT_FUNCTION(tcgetattr);
+#else
+#define INIT_TCGETATTR
+#endif
+
+
+#if SANITIZER_INTERCEPT_REALPATH
+INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path);
+ if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
+
+ // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest
+ // version of a versioned symbol. For realpath(), this gives us something
+ // (called __old_realpath) that does not handle NULL in the second argument.
+ // Handle it as part of the interceptor.
+ char *allocated_path = 0;
+ if (!resolved_path)
+ allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1);
+
+ char *res = REAL(realpath)(path, resolved_path);
+ if (allocated_path && !res)
+ WRAP(free)(allocated_path);
+ if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+#define INIT_REALPATH INTERCEPT_FUNCTION(realpath);
+#else
+#define INIT_REALPATH
+#endif
+
+#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME
+INTERCEPTOR(char *, canonicalize_file_name, const char *path) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path);
+ if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
+ char *res = REAL(canonicalize_file_name)(path);
+ if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+#define INIT_CANONICALIZE_FILE_NAME INTERCEPT_FUNCTION(canonicalize_file_name);
+#else
+#define INIT_CANONICALIZE_FILE_NAME
+#endif
+
+#if SANITIZER_INTERCEPT_CONFSTR
+INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len);
+ SIZE_T res = REAL(confstr)(name, buf, len);
+ if (buf && res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len);
+ return res;
+}
+#define INIT_CONFSTR INTERCEPT_FUNCTION(confstr);
+#else
+#define INIT_CONFSTR
+#endif
+
+#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY
+INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask);
+ int res = REAL(sched_getaffinity)(pid, cpusetsize, mask);
+ if (mask && !res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
+ return res;
+}
+#define INIT_SCHED_GETAFFINITY INTERCEPT_FUNCTION(sched_getaffinity);
+#else
+#define INIT_SCHED_GETAFFINITY
+#endif
+
+#if SANITIZER_INTERCEPT_STRERROR
+INTERCEPTOR(char *, strerror, int errnum) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum);
+ char *res = REAL(strerror)(errnum);
+ if (res)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ return res;
+}
+#define INIT_STRERROR INTERCEPT_FUNCTION(strerror);
+#else
+#define INIT_STRERROR
+#endif
+
+#if SANITIZER_INTERCEPT_STRERROR_R
+INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
+ char *res = REAL(strerror_r)(errnum, buf, buflen);
+ // There are 2 versions of strerror_r:
+ // * POSIX version returns 0 on success, negative error code on failure,
+ // writes message to buf.
+ // * GNU version returns message pointer, which points to either buf or some
+ // static storage.
+ SIZE_T posix_res = (SIZE_T)res;
+ if (posix_res < 1024 || posix_res > (SIZE_T) - 1024) {
+ // POSIX version. Spec is not clear on whether buf is NULL-terminated.
+ // At least on OSX, buf contents are valid even when the call fails.
+ SIZE_T sz = internal_strnlen(buf, buflen);
+ if (sz < buflen) ++sz;
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
+ } else {
+ // GNU version.
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
+ }
+ return res;
+}
+#define INIT_STRERROR_R INTERCEPT_FUNCTION(strerror_r);
+#else
+#define INIT_STRERROR_R
+#endif
+
+#if SANITIZER_INTERCEPT_SCANDIR
+typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *);
+typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **,
+ const struct __sanitizer_dirent **);
+
+static THREADLOCAL void *scandir_ctx;
+static THREADLOCAL scandir_filter_f scandir_filter;
+static THREADLOCAL scandir_compar_f scandir_compar;
+
+static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(scandir_ctx, 1);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir_ctx, dir, dir->d_reclen);
+ return scandir_filter(dir);
+}
+
+static int wrapped_scandir_compar(const struct __sanitizer_dirent **a,
+ const struct __sanitizer_dirent **b) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(scandir_ctx, 2);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir_ctx, a, sizeof(*a));
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir_ctx, *a, (*a)->d_reclen);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir_ctx, b, sizeof(*b));
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir_ctx, *b, (*b)->d_reclen);
+ return scandir_compar(a, b);
+}
+
+INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist,
+ scandir_filter_f filter, scandir_compar_f compar) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar);
+ if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1);
+ CHECK_EQ(0, scandir_ctx);
+ scandir_ctx = ctx;
+ scandir_filter = filter;
+ scandir_compar = compar;
+ int res = REAL(scandir)(dirp, namelist, filter ? wrapped_scandir_filter : 0,
+ compar ? wrapped_scandir_compar : 0);
+ scandir_ctx = 0;
+ scandir_filter = 0;
+ scandir_compar = 0;
+ if (namelist && res > 0) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
+ for (int i = 0; i < res; ++i)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
+ (*namelist)[i]->d_reclen);
+ }
+ return res;
+}
+#define INIT_SCANDIR INTERCEPT_FUNCTION(scandir);
+#else
+#define INIT_SCANDIR
+#endif
+
+#if SANITIZER_INTERCEPT_SCANDIR64
+typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *);
+typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **,
+ const struct __sanitizer_dirent64 **);
+
+static THREADLOCAL void *scandir64_ctx;
+static THREADLOCAL scandir64_filter_f scandir64_filter;
+static THREADLOCAL scandir64_compar_f scandir64_compar;
+
+static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(scandir64_ctx, 1);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir64_ctx, dir, dir->d_reclen);
+ return scandir64_filter(dir);
+}
+
+static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a,
+ const struct __sanitizer_dirent64 **b) {
+ COMMON_INTERCEPTOR_UNPOISON_PARAM(scandir64_ctx, 2);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir64_ctx, a, sizeof(*a));
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir64_ctx, *a, (*a)->d_reclen);
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir64_ctx, b, sizeof(*b));
+ COMMON_INTERCEPTOR_WRITE_RANGE(scandir64_ctx, *b, (*b)->d_reclen);
+ return scandir64_compar(a, b);
+}
+
+INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist,
+ scandir64_filter_f filter, scandir64_compar_f compar) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar);
+ if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1);
+ CHECK_EQ(0, scandir64_ctx);
+ scandir64_ctx = ctx;
+ scandir64_filter = filter;
+ scandir64_compar = compar;
+ int res =
+ REAL(scandir64)(dirp, namelist, filter ? wrapped_scandir64_filter : 0,
+ compar ? wrapped_scandir64_compar : 0);
+ scandir64_ctx = 0;
+ scandir64_filter = 0;
+ scandir64_compar = 0;
+ if (namelist && res > 0) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
+ for (int i = 0; i < res; ++i)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
+ (*namelist)[i]->d_reclen);
+ }
+ return res;
+}
+#define INIT_SCANDIR64 INTERCEPT_FUNCTION(scandir64);
+#else
+#define INIT_SCANDIR64
+#endif
+
+#if SANITIZER_INTERCEPT_GETGROUPS
+INTERCEPTOR(int, getgroups, int size, u32 *lst) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst);
+ int res = REAL(getgroups)(size, lst);
+ if (res && lst)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst));
+ return res;
+}
+#define INIT_GETGROUPS INTERCEPT_FUNCTION(getgroups);
+#else
+#define INIT_GETGROUPS
+#endif
+
+#if SANITIZER_INTERCEPT_POLL
+static void read_pollfd(void *ctx, __sanitizer_pollfd *fds,
+ __sanitizer_nfds_t nfds) {
+ for (unsigned i = 0; i < nfds; ++i) {
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd));
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events));
+ }
+}
+
+static void write_pollfd(void *ctx, __sanitizer_pollfd *fds,
+ __sanitizer_nfds_t nfds) {
+ for (unsigned i = 0; i < nfds; ++i)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents,
+ sizeof(fds[i].revents));
+}
+
+INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
+ int timeout) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout);
+ if (fds && nfds) read_pollfd(ctx, fds, nfds);
+ int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout);
+ if (fds && nfds) write_pollfd(ctx, fds, nfds);
+ return res;
+}
+#define INIT_POLL INTERCEPT_FUNCTION(poll);
+#else
+#define INIT_POLL
+#endif
+
+#if SANITIZER_INTERCEPT_PPOLL
+INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
+ void *timeout_ts, __sanitizer_sigset_t *sigmask) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask);
+ if (fds && nfds) read_pollfd(ctx, fds, nfds);
+ if (timeout_ts)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz);
+ // FIXME: read sigmask when all of sigemptyset, etc are intercepted.
+ int res =
+ COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask);
+ if (fds && nfds) write_pollfd(ctx, fds, nfds);
+ return res;
+}
+#define INIT_PPOLL INTERCEPT_FUNCTION(ppoll);
+#else
+#define INIT_PPOLL
+#endif
+
+#if SANITIZER_INTERCEPT_WORDEXP
+INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags);
+ if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1);
+ int res = REAL(wordexp)(s, p, flags);
+ if (!res && p) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
+ if (p->we_wordc)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv,
+ sizeof(*p->we_wordv) * p->we_wordc);
+ for (uptr i = 0; i < p->we_wordc; ++i) {
+ char *w = p->we_wordv[i];
+ if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, REAL(strlen)(w) + 1);
+ }
+ }
+ return res;
+}
+#define INIT_WORDEXP INTERCEPT_FUNCTION(wordexp);
+#else
+#define INIT_WORDEXP
+#endif
+
+#if SANITIZER_INTERCEPT_SIGWAIT
+INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig);
+ // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
+ int res = REAL(sigwait)(set, sig);
+ if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig));
+ return res;
+}
+#define INIT_SIGWAIT INTERCEPT_FUNCTION(sigwait);
+#else
+#define INIT_SIGWAIT
+#endif
+
+#if SANITIZER_INTERCEPT_SIGWAITINFO
+INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info);
+ // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
+ int res = REAL(sigwaitinfo)(set, info);
+ if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
+ return res;
+}
+#define INIT_SIGWAITINFO INTERCEPT_FUNCTION(sigwaitinfo);
+#else
+#define INIT_SIGWAITINFO
+#endif
+
+#if SANITIZER_INTERCEPT_SIGTIMEDWAIT
+INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info,
+ void *timeout) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout);
+ if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
+ // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
+ int res = REAL(sigtimedwait)(set, info, timeout);
+ if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
+ return res;
+}
+#define INIT_SIGTIMEDWAIT INTERCEPT_FUNCTION(sigtimedwait);
+#else
+#define INIT_SIGTIMEDWAIT
+#endif
+
+#if SANITIZER_INTERCEPT_SIGSETOPS
+INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set);
+ int res = REAL(sigemptyset)(set);
+ if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
+ return res;
+}
+
+INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set);
+ int res = REAL(sigfillset)(set);
+ if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
+ return res;
+}
+#define INIT_SIGSETOPS \
+ INTERCEPT_FUNCTION(sigemptyset); \
+ INTERCEPT_FUNCTION(sigfillset);
+#else
+#define INIT_SIGSETOPS
+#endif
+
+#if SANITIZER_INTERCEPT_SIGPENDING
+INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set);
+ int res = REAL(sigpending)(set);
+ if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
+ return res;
+}
+#define INIT_SIGPENDING INTERCEPT_FUNCTION(sigpending);
+#else
+#define INIT_SIGPENDING
+#endif
+
+#if SANITIZER_INTERCEPT_SIGPROCMASK
+INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set,
+ __sanitizer_sigset_t *oldset) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset);
+ // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
+ int res = REAL(sigprocmask)(how, set, oldset);
+ if (!res && oldset)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
+ return res;
+}
+#define INIT_SIGPROCMASK INTERCEPT_FUNCTION(sigprocmask);
+#else
+#define INIT_SIGPROCMASK
+#endif
+
+#if SANITIZER_INTERCEPT_BACKTRACE
+INTERCEPTOR(int, backtrace, void **buffer, int size) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size);
+ int res = REAL(backtrace)(buffer, size);
+ if (res && buffer)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer));
+ return res;
+}
+
+INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) {
+ void *ctx;
+ COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size);
+ if (buffer && size)
+ COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer));
+ char ** res = REAL(backtrace_symbols)(buffer, size);
+ if (res && size) {
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res));
+ for (int i = 0; i < size; ++i)
+ COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], REAL(strlen(res[i])) + 1);
+ }
+ return res;
+}
+#define INIT_BACKTRACE \
+ INTERCEPT_FUNCTION(backtrace); \
+ INTERCEPT_FUNCTION(backtrace_symbols);
+#else
+#define INIT_BACKTRACE
+#endif
+
+#define SANITIZER_COMMON_INTERCEPTORS_INIT \
+ INIT_STRCMP; \
+ INIT_STRNCMP; \
+ INIT_STRCASECMP; \
+ INIT_STRNCASECMP; \
+ INIT_READ; \
+ INIT_PREAD; \
+ INIT_PREAD64; \
+ INIT_READV; \
+ INIT_PREADV; \
+ INIT_PREADV64; \
+ INIT_WRITE; \
+ INIT_PWRITE; \
+ INIT_PWRITE64; \
+ INIT_WRITEV; \
+ INIT_PWRITEV; \
+ INIT_PWRITEV64; \
+ INIT_PRCTL; \
+ INIT_LOCALTIME_AND_FRIENDS; \
+ INIT_SCANF; \
+ INIT_ISOC99_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; \
+ INIT_PTHREAD_GETSCHEDPARAM; \
+ INIT_GETADDRINFO; \
+ INIT_GETNAMEINFO; \
+ INIT_GETSOCKNAME; \
+ INIT_GETHOSTBYNAME; \
+ INIT_GETHOSTBYNAME_R; \
+ INIT_GETSOCKOPT; \
+ INIT_ACCEPT; \
+ INIT_ACCEPT4; \
+ INIT_MODF; \
+ INIT_RECVMSG; \
+ INIT_GETPEERNAME; \
+ INIT_IOCTL; \
+ INIT_INET_ATON; \
+ INIT_SYSINFO; \
+ INIT_READDIR; \
+ INIT_READDIR64; \
+ INIT_PTRACE; \
+ INIT_SETLOCALE; \
+ INIT_GETCWD; \
+ INIT_GET_CURRENT_DIR_NAME; \
+ INIT_STRTOIMAX; \
+ INIT_MBSTOWCS; \
+ INIT_MBSNRTOWCS; \
+ INIT_WCSTOMBS; \
+ INIT_WCSNRTOMBS; \
+ INIT_TCGETATTR; \
+ INIT_REALPATH; \
+ INIT_CANONICALIZE_FILE_NAME; \
+ INIT_CONFSTR; \
+ INIT_SCHED_GETAFFINITY; \
+ INIT_STRERROR; \
+ INIT_STRERROR_R; \
+ INIT_SCANDIR; \
+ INIT_SCANDIR64; \
+ INIT_GETGROUPS; \
+ INIT_POLL; \
+ INIT_PPOLL; \
+ INIT_WORDEXP; \
+ INIT_SIGWAIT; \
+ INIT_SIGWAITINFO; \
+ INIT_SIGTIMEDWAIT; \
+ INIT_SIGSETOPS; \
+ INIT_SIGPENDING; \
+ INIT_SIGPROCMASK; \
+ INIT_BACKTRACE;
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