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[sanitizer] Support PTRACE_GETEVENTMSG in the ptrace() interceptor. 

llvm-svn: 211022
This commit is contained in:
Sergey Matveev 2014-06-16 13:49:13 +00:00
parent a84989a22d
commit 998d991b2d
3 changed files with 5 additions and 1 deletions
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4
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
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@ -2031,7 +2031,7 @@ INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
uptr res = REAL(ptrace)(request, pid, addr, data);
if (!res && data) {
// Note that PEEK* requests assing different meaning to the return value.
// Note that PEEK* requests assign 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);
@ -2041,6 +2041,8 @@ INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
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_geteventmsg)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(unsigned long));
else if (request == ptrace_getregset) {
__sanitizer_iovec *iov = (__sanitizer_iovec *)data;
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iov->iov_base, iov->iov_len);

1
compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cc
View File

@ -289,6 +289,7 @@ namespace __sanitizer {
int ptrace_setfpregs = PTRACE_SETFPREGS;
int ptrace_getfpxregs = PTRACE_GETFPXREGS;
int ptrace_setfpxregs = PTRACE_SETFPXREGS;
int ptrace_geteventmsg = PTRACE_GETEVENTMSG;
#if (defined(PTRACE_GETSIGINFO) && defined(PTRACE_SETSIGINFO)) || \
(defined(PT_GETSIGINFO) && defined(PT_SETSIGINFO))
int ptrace_getsiginfo = PTRACE_GETSIGINFO;

1
compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
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@ -678,6 +678,7 @@ namespace __sanitizer {
extern int ptrace_setsiginfo;
extern int ptrace_getregset;
extern int ptrace_setregset;
extern int ptrace_geteventmsg;
#endif
#if (SANITIZER_LINUX || SANITIZER_FREEBSD) && !SANITIZER_ANDROID