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ar: add -U (unique) option to disable -D (deterministic) mode

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This is required in order for us to support deterministic mode by
default.  If multiple -D or -U options are specified on the command
line, the final one takes precedence.  GNU ar also uses -U for this.

An equivalent change will be applied to ELF Tool Chain's version of ar.

PR:		196929
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D3175
This commit is contained in:
Ed Maste 2015-07-24 17:46:43 +00:00
parent 86fb540033
commit 7072861cd0
2 changed files with 34 additions and 7 deletions
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23
usr.bin/ar/ar.1
View File

@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd December 22, 2011
.Dd July 24, 2015
.Dt AR 1
.Os
.Sh NAME
@ -66,6 +66,7 @@
.Op Fl D
.Op Fl f
.Op Fl s | Fl S
.Op Fl U
.Op Fl v
.Op Fl z
.Ar archive
@ -82,6 +83,7 @@
.Op Fl j
.Op Fl s | Fl S
.Op Fl u
.Op Fl U
.Op Fl v
.Op Fl z
.Ar archive
@ -112,6 +114,7 @@
.Fl M
.Nm ranlib
.Op Fl D
.Op Fl U
.Ar archive ...
.Sh DESCRIPTION
The
@ -207,6 +210,11 @@ and 0644 instead of file mode from the members named by arguments
.Ar .
This ensures that checksums on the resulting archives are reproducible
when member contents are identical.
If multiple
.Fl D
and
.Fl U
options are specified on the command line, the final one takes precedence.
.It Fl f
Synonymous with option
.Fl T .
@ -316,6 +324,19 @@ option, the members specified by arguments
.Ar
will be extracted only if they are newer than the corresponding
files in the file system.
.It Fl U
When used in combination with the
.Fl r
or
.Fl q
option, insert the real mtime, uid and gid, and file mode values
from the members named by arguments
.Ar .
If multiple
.Fl D
and
.Fl U
options are specified on the command line, the final one takes precedence.
.It Fl v
Provide verbose output.
When used with the

18
usr.bin/ar/ar.c
View File

@ -113,7 +113,7 @@ main(int argc, char **argv)
len = strlen(bsdar->progname);
if (len >= strlen("ranlib") &&
strcmp(bsdar->progname + len - strlen("ranlib"), "ranlib") == 0) {
while ((opt = getopt_long(argc, argv, "tDV", longopts,
while ((opt = getopt_long(argc, argv, "tDUV", longopts,
NULL)) != -1) {
switch(opt) {
case 't':
@ -122,6 +122,9 @@ main(int argc, char **argv)
case 'D':
bsdar->options |= AR_D;
break;
case 'U':
bsdar->options &= ~AR_D;
break;
case 'V':
ranlib_version();
break;
@ -157,7 +160,7 @@ main(int argc, char **argv)
}
}
while ((opt = getopt_long(argc, argv, "abCcdDfijlMmopqrSsTtuVvxz",
while ((opt = getopt_long(argc, argv, "abCcdDfijlMmopqrSsTtUuVvxz",
longopts, NULL)) != -1) {
switch(opt) {
case 'a':
@ -216,6 +219,9 @@ main(int argc, char **argv)
case 't':
set_mode(bsdar, opt);
break;
case 'U':
bsdar->options &= ~AR_D;
break;
case 'u':
bsdar->options |= AR_U;
break;
@ -364,9 +370,9 @@ bsdar_usage(void)
(void)fprintf(stderr, "\tar -m [-Tjsvz] archive file ...\n");
(void)fprintf(stderr, "\tar -m [-Tabijsvz] position archive file ...\n");
(void)fprintf(stderr, "\tar -p [-Tv] archive [file ...]\n");
(void)fprintf(stderr, "\tar -q [-TcDjsvz] archive file ...\n");
(void)fprintf(stderr, "\tar -r [-TcDjsuvz] archive file ...\n");
(void)fprintf(stderr, "\tar -r [-TabcDijsuvz] position archive file ...\n");
(void)fprintf(stderr, "\tar -q [-TcDjsUvz] archive file ...\n");
(void)fprintf(stderr, "\tar -r [-TcDjsUuvz] archive file ...\n");
(void)fprintf(stderr, "\tar -r [-TabcDijsUuvz] position archive file ...\n");
(void)fprintf(stderr, "\tar -s [-jz] archive\n");
(void)fprintf(stderr, "\tar -t [-Tv] archive [file ...]\n");
(void)fprintf(stderr, "\tar -x [-CTouv] archive [file ...]\n");
@ -378,7 +384,7 @@ static void
ranlib_usage(void)
{
(void)fprintf(stderr, "usage: ranlib [-t] archive ...\n");
(void)fprintf(stderr, "usage: ranlib [-DtU] archive ...\n");
(void)fprintf(stderr, "\tranlib -V\n");
exit(EX_USAGE);
}