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[Sanitizer] add internal_{close,read,write} functions to sanitizer_libc

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llvm-svn: 157990
This commit is contained in:
Alexey Samsonov 2012-06-05 08:32:53 +00:00
parent 696835bb03
commit 03c8b846c4
4 changed files with 53 additions and 0 deletions
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4
compiler-rt/lib/sanitizer_common/sanitizer_libc.h
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@ -33,7 +33,11 @@ void *internal_mmap(void *addr, uptr length, int prot, int flags,
int fd, u64 offset);
typedef int fd_t;
const fd_t kInvalidFd = -1;
int internal_close(fd_t fd);
fd_t internal_open(const char *filename, bool write);
uptr internal_read(fd_t fd, void *buf, uptr count);
uptr internal_write(fd_t fd, const void *buf, uptr count);
} // namespace __sanitizer

12
compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
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@ -34,11 +34,23 @@ void *internal_mmap(void *addr, uptr length, int prot, int flags,
#endif
}
int internal_close(fd_t fd) {
return syscall(__NR_close, fd);
}
fd_t internal_open(const char *filename, bool write) {
return syscall(__NR_open, filename,
write ? O_WRONLY | O_CREAT | O_CLOEXEC : O_RDONLY, 0660);
}
uptr internal_read(fd_t fd, void *buf, uptr count) {
return (uptr)syscall(__NR_read, fd, buf, count);
}
uptr internal_write(fd_t fd, const void *buf, uptr count) {
return (uptr)syscall(__NR_write, fd, buf, count);
}
} // namespace __sanitizer
#endif // __linux__

13
compiler-rt/lib/sanitizer_common/sanitizer_mac.cc
View File

@ -21,6 +21,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
namespace __sanitizer {
@ -29,11 +30,23 @@ void *internal_mmap(void *addr, size_t length, int prot, int flags,
return mmap(addr, length, prot, flags, fd, offset);
}
int internal_close(fd_t fd) {
return close(fd);
}
fd_t internal_open(const char *filename, bool write) {
return open(filename,
write ? O_WRONLY | O_CREAT | O_CLOEXEC : O_RDONLY, 0660);
}
uptr internal_read(fd_t fd, void *buf, uptr count) {
return read(fd, buf, count);
}
uptr internal_write(fd_t fd, const void *buf, uptr count) {
return write(fd, buf, count);
}
} // namespace __sanitizer
#endif // __APPLE__

24
compiler-rt/lib/sanitizer_common/sanitizer_win.cc
View File

@ -29,11 +29,35 @@ void *internal_mmap(void *addr, uptr length, int prot, int flags,
return 0;
}
int internal_close(fd_t fd) {
UNIMPLEMENTED_WIN();
return 0;
}
fd_t internal_open(const char *filename, bool write) {
UNIMPLEMENTED_WIN();
return 0;
}
uptr internal_read(fd_t fd, void *buf, uptr count) {
UNIMPLEMENTED_WIN();
return 0;
}
uptr internal_write(fd_t fd, const void *buf, uptr count) {
if (fd != 2) {
UNIMPLEMENTED_WIN();
return 0;
}
HANDLE err = GetStdHandle(STD_ERROR_HANDLE);
if (err == 0)
return 0; // FIXME: this might not work on some apps.
DWORD ret;
if (!WriteFile(err, buf, count, &ret, 0))
return 0;
return ret;
}
} // namespace __sanitizer
#endif // _WIN32