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internal_stat for mips64

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llvm-svn: 224326
This commit is contained in:
Mohit K. Bhakkad 2014-12-16 07:11:08 +00:00
parent fee167fcc0
commit a94a037528
1 changed files with 39 additions and 0 deletions
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39
compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
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@ -31,6 +31,17 @@
#include <asm/param.h>
#endif
// For mips64, syscall(__NR_stat) fills the buffer in the 'struct kernel_stat'
// format. Struct kernel_stat is defined as 'struct stat' in asm/stat.h. To
// access stat from asm/stat.h, without conflicting with definition in
// sys/stat.h, we use this trick.
#if defined(__mips64)
#include <sys/types.h>
#define stat kernel_stat
#include <asm/stat.h>
#undef stat
#endif
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
@ -179,6 +190,26 @@ static void stat64_to_stat(struct stat64 *in, struct stat *out) {
}
#endif
#if defined(__mips64)
static void kernel_stat_to_stat(struct kernel_stat *in, struct stat *out) {
internal_memset(out, 0, sizeof(*out));
out->st_dev = in->st_dev;
out->st_ino = in->st_ino;
out->st_mode = in->st_mode;
out->st_nlink = in->st_nlink;
out->st_uid = in->st_uid;
out->st_gid = in->st_gid;
out->st_rdev = in->st_rdev;
out->st_size = in->st_size;
out->st_blksize = in->st_blksize;
out->st_blocks = in->st_blocks;
out->st_atime = in->st_atime_nsec;
out->st_mtime = in->st_mtime_nsec;
out->st_ctime = in->st_ctime_nsec;
out->st_ino = in->st_ino;
}
#endif
uptr internal_stat(const char *path, void *buf) {
#if SANITIZER_FREEBSD
return internal_syscall(SYSCALL(stat), path, buf);
@ -186,7 +217,15 @@ uptr internal_stat(const char *path, void *buf) {
return internal_syscall(SYSCALL(newfstatat), AT_FDCWD, (uptr)path,
(uptr)buf, 0);
#elif SANITIZER_LINUX_USES_64BIT_SYSCALLS
# if defined(__mips64)
// For mips64, stat syscall fills buffer in the format of kernel_stat
struct kernel_stat kbuf;
int res = internal_syscall(SYSCALL(stat), path, &kbuf);
kernel_stat_to_stat(&kbuf, (struct stat *)buf);
return res;
# else
return internal_syscall(SYSCALL(stat), (uptr)path, (uptr)buf);
# endif
#else
struct stat64 buf64;
int res = internal_syscall(SYSCALL(stat64), path, &buf64);