From 8dde1d7be2dd321a375570b7ff7e22bb01293044 Mon Sep 17 00:00:00 2001 From: Alexander Couzens Date: Fri, 4 Dec 2015 17:10:42 +0100 Subject: [PATCH 08/10] mkstandalone: add argument --fixed-time to override mtime of files mkstandalone adds several files to an archive. Doing this it uses the mtime to give these files a timestamp. --fixed-time overrides these timestamps with a given. Replacing all timestamps with a specific one is required to get reproducible builds. See source epoch specification of reproducible-builds.org --- util/grub-mkstandalone.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/util/grub-mkstandalone.c b/util/grub-mkstandalone.c index 4907d44..047f0cd 100644 --- a/util/grub-mkstandalone.c +++ b/util/grub-mkstandalone.c @@ -30,6 +30,7 @@ #pragma GCC diagnostic error "-Wmissing-prototypes" #pragma GCC diagnostic error "-Wmissing-declarations" +static time_t fixed_time; static char *output_image; static char **files; static int nfiles; @@ -48,6 +49,7 @@ static struct argp_option options[] = { 0, N_("save output in FILE [required]"), 2}, {"format", 'O', N_("FILE"), 0, 0, 2}, {"compression", 'C', "xz|none|auto", OPTION_HIDDEN, 0, 2}, + {"fixed-time", 't', N_("TIMEEPOCH"), 0, N_("Use a fixed timestamp to override mtime of all files. Time since epoch is used."), 2}, {0, 0, 0, 0, 0, 0} }; @@ -72,6 +74,7 @@ help_filter (int key, const char *text, void *input __attribute__ ((unused))) static error_t argp_parser (int key, char *arg, struct argp_state *state) { + char *b; if (key == 'C') key = GRUB_INSTALL_OPTIONS_INSTALL_CORE_COMPRESS; @@ -80,6 +83,14 @@ argp_parser (int key, char *arg, struct argp_state *state) switch (key) { + case 't': + fixed_time = strtoll (arg, &b, 10); + if (*b !='\0') { + printf (_("invalid fixed time number: %s\n"), arg); + argp_usage (state); + exit (1); + } + break; case 'o': if (output_image) @@ -192,7 +203,8 @@ add_tar_file (const char *from, if (grub_util_is_special_file (from)) return; - mtime = grub_util_get_mtime (from); + /* use fixed_time if given for mtime */ + mtime = fixed_time != -1 ? fixed_time : grub_util_get_mtime (from); optr = tcn = xmalloc (strlen (to) + 1); for (iptr = to; *iptr == '/'; iptr++); -- 1.9.1