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Add new NetBSD interceptors: devname(3), devname_r(3)

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Summary:
devname, devname_r - get device name

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, vitalybuka

Reviewed By: vitalybuka

Subscribers: kubamracek, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D42053

llvm-svn: 324120
This commit is contained in:
Kamil Rytarowski 2018-02-02 18:45:33 +00:00
parent 40207d5064
commit e6bba9bc6f
4 changed files with 84 additions and 0 deletions
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32
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
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@ -6758,6 +6758,36 @@ INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) {
#define INIT_STRLCPY
#endif
#if SANITIZER_INTERCEPT_DEVNAME
INTERCEPTOR(char *, devname, u64 dev, u32 type) {
void *ctx;
char *name;
COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type);
name = REAL(devname)(dev, type);
if (name)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1);
return name;
}
#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname);
#else
#define INIT_DEVNAME
#endif
#if SANITIZER_INTERCEPT_DEVNAME_R
INTERCEPTOR(int, devname_r, u64 dev, u32 type, char *path, uptr len) {
void *ctx;
int res;
COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len);
res = REAL(devname_r)(dev, type, path, len);
if (!res)
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, REAL(strlen)(path) + 1);
return res;
}
#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r);
#else
#define INIT_DEVNAME_R
#endif
static void InitializeCommonInterceptors() {
static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
@ -6983,6 +7013,8 @@ static void InitializeCommonInterceptors() {
INIT_NAME_TO_HANDLE_AT;
INIT_OPEN_BY_HANDLE_AT;
INIT_STRLCPY;
INIT_DEVNAME;
INIT_DEVNAME_R;
#if SANITIZER_NETBSD
COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock);

3
compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
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@ -456,4 +456,7 @@
#define SANITIZER_INTERCEPT_READLINKAT \
(SI_POSIX && !SI_MAC_DEPLOYMENT_BELOW_10_10)
#define SANITIZER_INTERCEPT_DEVNAME SI_NETBSD
#define SANITIZER_INTERCEPT_DEVNAME_R SI_NETBSD
#endif // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H

22
compiler-rt/test/sanitizer_common/TestCases/NetBSD/devname.cc Normal file
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@ -0,0 +1,22 @@
// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
int main(void) {
struct stat st;
char *name;
if (stat("/dev/null", &st))
exit(1);
if (!(name = devname(st.st_rdev, S_ISCHR(st.st_mode) ? S_IFCHR : S_IFBLK)))
exit(1);
printf("%s\n", name);
// CHECK: null
return 0;
}

27
compiler-rt/test/sanitizer_common/TestCases/NetBSD/devname_r.cc Normal file
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@ -0,0 +1,27 @@
// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck
#include <sys/cdefs.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
struct stat st;
char name[10];
mode_t type;
if (stat("/dev/null", &st))
exit(1);
type = S_ISCHR(st.st_mode) ? S_IFCHR : S_IFBLK;
if (devname_r(st.st_rdev, type, name, __arraycount(name)))
exit(1);
printf("%s\n", name);
// CHECK: null
return 0;
}