unzip: fix build without utimensat() or futimens()

Fixes libarchive#1919

Author: mmatuska

unzip/bsdunzip.c

@@ -72,6 +72,12 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#if ((!defined(HAVE_UTIMENSAT) && defined(HAVE_LUTIMES)) || \
+    (!defined(HAVE_FUTIMENS) && defined(HAVE_FUTIMES)))
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#endif
 
 #include <archive.h>
 #include <archive_entry.h>
@@ -630,9 +636,15 @@ extract_file(struct archive *a, struct archive_entry *e, char **path)
 	int mode;
 	struct timespec mtime;
 	struct stat sb;
-	struct timespec ts[2];
 	int fd, check, text;
 	const char *linkname;
+#if defined(HAVE_UTIMENSAT) || defined(HAVE_FUTIMENS)
+	struct timespec ts[2];
+#endif
+#if ((!defined(HAVE_UTIMENSAT) && defined(HAVE_LUTIMES)) || \
+    (!defined(HAVE_FUTIMENS) && defined(HAVE_FUTIMES)))
+	struct timeval times[2];
+#endif
 
 	mode = archive_entry_mode(e) & 0777;
 	if (mode == 0)
@@ -686,9 +698,18 @@ extract_file(struct archive *a, struct archive_entry *e, char **path)
 			return;
 	}
 
+#if defined(HAVE_UTIMENSAT) || defined(HAVE_FUTIMENS)
 	ts[0].tv_sec = 0;
 	ts[0].tv_nsec = UTIME_NOW;
 	ts[1] = mtime;
+#endif
+#if ((!defined(HAVE_UTIMENSAT) && defined(HAVE_LUTIMES)) || \
+    (!defined(HAVE_FUTIMENS) && defined(HAVE_FUTIMES)))
+	times[0].tv_sec = 0;
+	times[0].tv_usec = -1;
+	times[1].tv_sec = mtime.tv_sec;
+	times[1].tv_usec = mtime.tv_nsec / 1000;
+#endif
 
 	/* process symlinks */
 	linkname = archive_entry_symlink(e);
@@ -701,8 +722,14 @@ extract_file(struct archive *a, struct archive_entry *e, char **path)
 			warning("Cannot set mode for '%s'", *path);
 #endif
 		/* set access and modification time */
+#if defined(HAVE_UTIMENSAT)
 		if (utimensat(AT_FDCWD, *path, ts, AT_SYMLINK_NOFOLLOW) != 0)
 			warning("utimensat('%s')", *path);
+#elif defined(HAVE_LUTIMES)
+		gettimeofday(&times[0], NULL);
+		if (lutimes(*path, times) != 0)
+			warning("lutimes('%s')", *path);
+#endif
 		return;
 	}
 
@@ -720,8 +747,14 @@ extract_file(struct archive *a, struct archive_entry *e, char **path)
 	info("\n");
 
 	/* set access and modification time */
+#if defined(HAVE_FUTIMENS)
 	if (futimens(fd, ts) != 0)
 		error("futimens('%s')", *path);
+#elif defined(HAVE_FUTIMES)
+	gettimeofday(&times[0], NULL);
+	if (futimes(fd, times) != 0)
+		error("futimes('%s')", *path);
+#endif
 	if (close(fd) != 0)
 		error("close('%s')", *path);
 }