Tweak atime/crtime code a bit more.

Author: WayneD

NEWS.md

@@ -51,7 +51,7 @@
  - Reduced memory usage for an incremental transfer that has a bunch of small
    diretories.
 
- - Add support for `--atimes` on macOS.
+ - Added support for `--atimes` on macOS and fix using using it without -t.
 
  - Rsync can now update the xattrs on a read-only file when your user can
    temporarily add user-write permission to the file. (It always worked for a

generator.c

@@ -1269,7 +1269,6 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 			return;
 		}
 	}
-	sx.crtime = 0;
 
 	if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
 		int i;

ifuncs.h

@@ -75,6 +75,7 @@ d_name(struct dirent *di)
 static inline void
 init_stat_x(stat_x *sx_p)
 {
+	sx_p->crtime = 0;
 #ifdef SUPPORT_ACLS
 	sx_p->acc_acl = sx_p->def_acl = NULL;
 #endif

rsync.1.md

@@ -1391,8 +1391,8 @@ your home directory (remove the '=' for that).
 
 0.  `--omit-dir-times`, `-O`
 
-    This tells rsync to omit directories when it is preserving modification
-    times (see `--times`).  If NFS is sharing the directories on the receiving
+    This tells rsync to omit directories when it is preserving modification,
+    access, and create times.  If NFS is sharing the directories on the receiving
     side, it is a good idea to use `-O`.  This option is inferred if you use
     `--backup` without `--backup-dir`.
 
@@ -1409,8 +1409,8 @@ your home directory (remove the '=' for that).
 
 0.  `--omit-link-times`, `-J`
 
-    This tells rsync to omit symlinks when it is preserving modification times
-    (see `--times`).
+    This tells rsync to omit symlinks when it is preserving modification,
+    access, and create times.
 
 0.  `--super`
 

rsync.c

@@ -63,8 +63,7 @@ extern char *iconv_opt;
 #define UPDATED_ATIME (1<<3)
 #define UPDATED_ACLS  (1<<4)
 #define UPDATED_MODE  (1<<5)
-
-#define UPDATED_TIMES (UPDATED_MTIME|UPDATED_ATIME)
+#define UPDATED_CRTIME (1<<6)
 
 #ifdef ICONV_CONST
 iconv_t ic_chck = (iconv_t)-1;
@@ -576,10 +575,11 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
 		set_xattr(fname, file, fnamecmp, sxp);
 #endif
 
-	if (!preserve_times
-	 || (!(preserve_times & PRESERVE_DIR_TIMES) && S_ISDIR(sxp->st.st_mode))
-	 || (!(preserve_times & PRESERVE_LINK_TIMES) && S_ISLNK(sxp->st.st_mode)))
-		flags |= ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME;
+	if (!preserve_times)
+		flags |= ATTRS_SKIP_MTIME | (atimes_ndx ? 0 : ATTRS_SKIP_ATIME) | (crtimes_ndx ? 0 : ATTRS_SKIP_CRTIME);
+	else if ((!(preserve_times & PRESERVE_DIR_TIMES) && S_ISDIR(sxp->st.st_mode))
+	      || (!(preserve_times & PRESERVE_LINK_TIMES) && S_ISLNK(sxp->st.st_mode)))
+		flags |= ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME;
 	else if (sxp != &sx2)
 		memcpy(&sx2.st, &sxp->st, sizeof (sx2.st));
 	if (!atimes_ndx || S_ISDIR(sxp->st.st_mode))
@@ -604,28 +604,36 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
 			updated |= UPDATED_ATIME;
 		}
 	}
-	if (updated & UPDATED_TIMES) {
+#ifdef SUPPORT_CRTIMES
+	if (crtimes_ndx && !(flags & ATTRS_SKIP_CRTIME)) {
+		time_t file_crtime = F_CRTIME(file);
+		if (sxp->crtime == 0)
+			sxp->crtime = get_create_time(fname, &sxp->st);
+		if (!same_time(sxp->crtime, 0L, file_crtime, 0L)) {
+			if (
+#ifdef HAVE_GETATTRLIST
+			     do_setattrlist_crtime(fname, file_crtime) == 0
+#elif defined __CYGWIN__
+			     do_SetFileTime(fname, file_crtime) == 0
+#else
+#error Unknown crtimes implementation
+#endif
+			)
+				updated |= UPDATED_CRTIME;
+		}
+	}
+#endif
+	if (updated & (UPDATED_MTIME|UPDATED_ATIME)) {
 		int ret = set_times(fname, &sx2.st);
 		if (ret < 0) {
-			rsyserr(FERROR_XFER, errno, "failed to set times on %s",
-				full_fname(fname));
+			rsyserr(FERROR_XFER, errno, "failed to set times on %s", full_fname(fname));
 			goto cleanup;
 		}
 		if (ret > 0) { /* ret == 1 if symlink could not be set */
-			updated &= ~UPDATED_TIMES;
+			updated &= ~(UPDATED_MTIME|UPDATED_ATIME);
 			file->flags |= FLAG_TIME_FAILED;
 		}
 	}
-#ifdef SUPPORT_CRTIMES
-	if (crtimes_ndx && !(flags & ATTRS_SKIP_CRTIME)) {
-		time_t file_crtime = F_CRTIME(file);
-		if (sxp->crtime == 0)
-			sxp->crtime = get_create_time(fname, &sxp->st);
-		if (!same_time(sxp->crtime, 0L, file_crtime, 0L)
-		 && set_create_time(fname, file_crtime) == 0)
-			updated = 1;
-	}
-#endif
 
 #ifdef SUPPORT_ACLS
 	/* It's OK to call set_acl() now, even for a dir, as the generator

syscall.c

@@ -233,8 +233,10 @@ int do_chmod(const char *path, mode_t mode)
 {
 	static int switch_step = 0;
 	int code;
+
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
+
 	switch (switch_step) {
 #ifdef HAVE_LCHMOD
 	case 0:
@@ -415,7 +417,26 @@ int do_setattrlist_times(const char *path, STRUCT_STAT *stp)
 	attrList.commonattr = ATTR_CMN_MODTIME | ATTR_CMN_ACCTIME;
 	return setattrlist(path, &attrList, ts, sizeof ts, FSOPT_NOFOLLOW);
 }
+
+#ifdef SUPPORT_CRTIMES
+int do_setattrlist_crtime(const char *path, time_t crtime)
+{
+	struct attrlist attrList;
+	struct timespec ts;
+
+	if (dry_run) return 0;
+	RETURN_ERROR_IF_RO_OR_LO;
+
+	ts.tv_sec = crtime;
+	ts.tv_nsec = 0;
+
+	memset(&attrList, 0, sizeof attrList);
+	attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
+	attrList.commonattr = ATTR_CMN_CRTIME;
+	return setattrlist(path, &attrList, &ts, sizeof ts, FSOPT_NOFOLLOW);
+}
 #endif
+#endif /* HAVE_SETATTRLIST */
 
 #ifdef SUPPORT_CRTIMES
 time_t get_create_time(const char *path, STRUCT_STAT *stp)
@@ -439,24 +460,12 @@ time_t get_create_time(const char *path, STRUCT_STAT *stp)
 #endif
 }
 
-int set_create_time(const char *path, time_t crtime)
+#if defined __CYGWIN__
+int do_SetFileTime(const char *path, time_t crtime)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
 
-    {
-#ifdef HAVE_GETATTRLIST
-	struct attrlist attrList;
-	struct timespec ts;
-
-	ts.tv_sec = crtime;
-	ts.tv_nsec = 0;
-
-	memset(&attrList, 0, sizeof attrList);
-	attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
-	attrList.commonattr = ATTR_CMN_CRTIME;
-	return setattrlist(path, &attrList, &ts, sizeof ts, FSOPT_NOFOLLOW);
-#elif defined __CYGWIN__
 	int cnt = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0);
 	if (cnt == 0)
 	    return -1;
@@ -476,9 +485,8 @@ int set_create_time(const char *path, time_t crtime)
 	int ok = SetFileTime(handle, &birth_time, NULL, NULL);
 	CloseHandle(handle);
 	return ok ? 0 : -1;
-#endif
-    }
 }
+#endif
 #endif /* SUPPORT_CRTIMES */
 
 #ifdef HAVE_UTIMENSAT