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New environment variable SOURCE_DATE_EPOCH

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This commit is contained in:
Thomas Schmitt
2016-08-16 13:18:31 +00:00
parent bda4b37e97
commit 384ff0eee9
8 changed files with 412 additions and 218 deletions
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32
xorriso/xorriso.1
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@ -9,7 +9,7 @@
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH XORRISO 1 "Version 1.4.5, Aug 14, 2016"
.TH XORRISO 1 "Version 1.4.5, Aug 15, 2016"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
@ -2822,7 +2822,16 @@ Available types are:
.br
"f" time since when the volume is effectively valid.
.br
"uuid" sets a timestring that overrides "c" and "m" times literally.
"all_file_dates" sets mtime, atime, and ctime of all files and
directories to the given time.
This action stays delayed until actual ISO production begins.
Up to then it can be revoked by "all_file_dates" with empty timestring.
.br
The timestamps of the El Torito boot catalog file get refreshed when the ISO
is produced. They can be influenced by "uuid".
.br
"uuid" sets a timestring that overrides "c" and "m" times literally and sets
the time of the El Torito boot catalog.
It must consist of 16 decimal digits which form YYYYMMDDhhmmsscc, with
YYYY between 1970 and 2999. Time zone is GMT.
It is supposed to match this GRUB line:
@ -4156,6 +4165,10 @@ mentioned boot facilities.
Modes \fBcmd\fR and \fBas_mkisofs\fR work like with
command \-report_el_torito. See above.
.br
With mode \fBgpt_disk_guid\fR print the GPT disk GUID of the loaded ISO
in RFC 4122 text format to result channel. It is not considered an error if
no GPT is present. In this case nothing is printed to result channel.
.br
With mode \fBgpt_crc_of:\fRdisk_path read up to 32 KiB from the disk
file with the path given after the colon. Compute the GPT compliant CRC number
and print it to the result channel. The number is shown like "0x690fd979".
@ -5978,6 +5991,21 @@ The default setting of \-check_media abort_file= is:
.br
/var/opt/xorriso/do_abort_check_media
.br
.SS
.SH ENVIRONMENT
The following environment variables influence the program behavior:
.br
HOME is used to find xorriso and mkisofs startup files.
.br
SOURCE_DATE_EPOCH belongs to the specs of reproducible\-builds.org.
It is supposed to be either undefined or to contain a decimal number
which tells the seconds since january 1st 1970. If it contains a number,
then it is used as time value to set the default of
\-volume date "uuid", \-volume_date "all_file_dates",
and it sets \-boot_image "any" "gpt_disk_guid=" to "volume_date_uuid".
Startup files and program options can override the effect of SOURCE_DATE_EPOCH.
.br
.SS
.SH SEE ALSO
.TP
For the mkisofs emulation of xorriso