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Copy ns time stat (#992)

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Eugene Kliuchnikov 2022-12-22 16:05:25 +01:00 committed by GitHub
parent 81dc1c86c3
commit 509d4419bd
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1 changed files with 35 additions and 10 deletions
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45
c/tools/brotli.c
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@ -26,11 +26,7 @@
#include "../common/constants.h"
#include "../common/version.h"
#if !defined(_WIN32)
#include <unistd.h>
#include <utime.h>
#define MAKE_BINARY(FILENO) (FILENO)
#else
#if defined(_WIN32)
#include <io.h>
#include <share.h>
#include <sys/utime.h>
@ -72,7 +68,23 @@ static int ms_open(const char* filename, int oflag, int pmode) {
_sopen_s(&result, filename, oflag | O_BINARY, _SH_DENYNO, pmode);
return result;
}
#endif /* WIN32 */
#else /* !defined(_WIN32) */
#include <unistd.h>
#include <utime.h>
#define MAKE_BINARY(FILENO) (FILENO)
#endif /* defined(_WIN32) */
#if defined(__APPLE__) && !defined(_POSIX_C_SOURCE)
#define HAVE_UTIMENSAT 1
#define ATIME_NSEC(S) ((S)->st_atimespec.tv_nsec)
#define MTIME_NSEC(S) ((S)->st_mtimespec.tv_nsec)
#elif defined(_WIN32) || !defined(AT_SYMLINK_NOFOLLOW)
#define HAVE_UTIMENSAT 0
#else
#define HAVE_UTIMENSAT 1
#define ATIME_NSEC(S) ((S)->st_atim.tv_nsec)
#define MTIME_NSEC(S) ((S)->st_mtim.tv_nsec)
#endif
typedef enum {
COMMAND_COMPRESS,
@ -664,12 +676,27 @@ static int64_t FileSize(const char* path) {
return retval;
}
static int CopyTimeStat(const struct stat* statbuf, const char* output_path) {
#if HAVE_UTIMENSAT
struct timespec times[2];
times[0].tv_sec = statbuf->st_atime;
times[0].tv_nsec = ATIME_NSEC(statbuf);
times[1].tv_sec = statbuf->st_mtime;
times[1].tv_nsec = MTIME_NSEC(statbuf);
return utimensat(AT_FDCWD, output_path, times, AT_SYMLINK_NOFOLLOW);
#else
struct utimbuf times;
times.actime = statbuf->st_atime;
times.modtime = statbuf->st_mtime;
return utime(output_path, &times);
#endif
}
/* Copy file times and permissions.
TODO(eustas): this is a "best effort" implementation; honest cross-platform
fully featured implementation is way too hacky; add more hacks by request. */
static void CopyStat(const char* input_path, const char* output_path) {
struct stat statbuf;
struct utimbuf times;
int res;
if (input_path == 0 || output_path == 0) {
return;
@ -677,9 +704,7 @@ static void CopyStat(const char* input_path, const char* output_path) {
if (stat(input_path, &statbuf) != 0) {
return;
}
times.actime = statbuf.st_atime;
times.modtime = statbuf.st_mtime;
utime(output_path, &times);
res = CopyTimeStat(&statbuf, output_path);
res = chmod(output_path, statbuf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));
if (res != 0) {
fprintf(stderr, "setting access bits failed for [%s]: %s\n",