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Implement pax -O option to permit limiting a PAX archive to a single volume.

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-O Force the archive to be one volume.  If a volume ends prematurely, pax will
not prompt for a new volume.

PR:		198481
Submitted by:	Sevan Janiyan
Reviewed by:	allanjude (doc)
This commit is contained in:
Eitan Adler 2015-03-18 05:48:05 +00:00
parent a1edda90b2
commit d6e1f8d70c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=280206
5 changed files with 32 additions and 16 deletions
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4
bin/pax/ar_io.c
View File

@ -82,7 +82,7 @@ static int wr_trail = 1; /* trailer was rewritten in append */
static int can_unlnk = 0; /* do we unlink null archives? */
const char *arcname; /* printable name of archive */
const char *gzip_program; /* name of gzip program */
static pid_t zpid = -1; /* pid of child process */
static pid_t zpid = -1; /* pid of child process */
static int get_phys(void);
static void ar_start_gzip(int, const char *, int);
@ -1123,7 +1123,7 @@ ar_next(void)
if (sigprocmask(SIG_SETMASK, &o_mask, NULL) < 0)
syswarn(0, errno, "Unable to restore signal mask");
if (done || !wr_trail || strcmp(NM_TAR, argv0) == 0)
if (done || !wr_trail || Oflag || strcmp(NM_TAR, argv0) == 0)
return(-1);
tty_prnt("\nATTENTION! %s archive volume change required.\n", argv0);

1
bin/pax/extern.h
View File

@ -217,6 +217,7 @@ extern int vflag;
extern int Dflag;
extern int Hflag;
extern int Lflag;
extern int Oflag;
extern int Xflag;
extern int Yflag;
extern int Zflag;

24
bin/pax/options.c
View File

@ -194,7 +194,7 @@ pax_options(int argc, char **argv)
/*
* process option flags
*/
while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLPT:U:XYZ"))
while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ"))
!= -1) {
switch (c) {
case 'a':
@ -447,6 +447,12 @@ pax_options(int argc, char **argv)
Lflag = 1;
flg |= CLF;
break;
case 'O':
/*
* Force one volume. Non standard option.
*/
Oflag = 1;
break;
case 'P':
/*
* do NOT follow symlinks (default)
@ -584,7 +590,7 @@ tar_options(int argc, char **argv)
{
int c;
int fstdin = 0;
int Oflag = 0;
int tar_Oflag = 0;
int nincfiles = 0;
int incfiles_max = 0;
struct incfile {
@ -664,7 +670,7 @@ tar_options(int argc, char **argv)
if (opt_add("write_opt=nodir") < 0)
tar_usage();
case 'O':
Oflag = 1;
tar_Oflag = 1;
break;
case 'p':
/*
@ -820,8 +826,8 @@ tar_options(int argc, char **argv)
* (unless -o specified)
*/
if (act == ARCHIVE || act == APPND)
frmt = &(fsub[Oflag ? F_OTAR : F_TAR]);
else if (Oflag) {
frmt = &(fsub[tar_Oflag ? F_OTAR : F_TAR]);
else if (tar_Oflag) {
paxwarn(1, "The -O/-o options are only valid when writing an archive");
tar_usage(); /* only valid when writing */
}
@ -1526,25 +1532,25 @@ no_op(void)
void
pax_usage(void)
{
(void)fputs("usage: pax [-cdnvz] [-E limit] [-f archive] ", stderr);
(void)fputs("usage: pax [-cdnOvz] [-E limit] [-f archive] ", stderr);
(void)fputs("[-s replstr] ... [-U user] ...", stderr);
(void)fputs("\n [-G group] ... ", stderr);
(void)fputs("[-T [from_date][,to_date]] ... ", stderr);
(void)fputs("[pattern ...]\n", stderr);
(void)fputs(" pax -r [-cdiknuvzDYZ] [-E limit] ", stderr);
(void)fputs(" pax -r [-cdiknOuvzDYZ] [-E limit] ", stderr);
(void)fputs("[-f archive] [-o options] ... \n", stderr);
(void)fputs(" [-p string] ... [-s replstr] ... ", stderr);
(void)fputs("[-U user] ... [-G group] ...\n ", stderr);
(void)fputs("[-T [from_date][,to_date]] ... ", stderr);
(void)fputs(" [pattern ...]\n", stderr);
(void)fputs(" pax -w [-dituvzHLPX] [-b blocksize] ", stderr);
(void)fputs(" pax -w [-dituvzHLOPX] [-b blocksize] ", stderr);
(void)fputs("[ [-a] [-f archive] ] [-x format] \n", stderr);
(void)fputs(" [-B bytes] [-s replstr] ... ", stderr);
(void)fputs("[-o options] ... [-U user] ...", stderr);
(void)fputs("\n [-G group] ... ", stderr);
(void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
(void)fputs("[file ...]\n", stderr);
(void)fputs(" pax -r -w [-diklntuvDHLPXYZ] ", stderr);
(void)fputs(" pax -r -w [-diklntuvDHLOPXYZ] ", stderr);
(void)fputs("[-p string] ... [-s replstr] ...", stderr);
(void)fputs("\n [-U user] ... [-G group] ... ", stderr);
(void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);

18
bin/pax/pax.1
View File

@ -33,7 +33,7 @@
.\" @(#)pax.1 8.4 (Berkeley) 4/18/94
.\" $FreeBSD$
.\"
.Dd December 21, 2013
.Dd March 17, 2015
.Dt PAX 1
.Os
.Sh NAME
@ -41,7 +41,7 @@
.Nd read and write file archives and copy directory hierarchies
.Sh SYNOPSIS
.Nm
.Op Fl cdnvz
.Op Fl cdnvzO
.Bk -words
.Op Fl f Ar archive
.Ek
@ -68,7 +68,7 @@
.Op Ar pattern ...\&
.Nm
.Fl r
.Op Fl cdiknuvzDYZ
.Op Fl cdiknuvzDOYZ
.Bk -words
.Op Fl f Ar archive
.Ek
@ -104,7 +104,7 @@
.Op Ar pattern ...\&
.Nm
.Fl w
.Op Fl dituvzHLPX
.Op Fl dituvzHLOPX
.Bk -words
.Op Fl b Ar blocksize
.Ek
@ -147,7 +147,7 @@
.Nm
.Fl r
.Fl w
.Op Fl diklntuvDHLPXYZ
.Op Fl diklntuvDHLOPXYZ
.Bk -words
.Op Fl p Ar string
.Ar ...\&
@ -853,6 +853,13 @@ Follow only command line symbolic links while performing a physical file
system traversal.
.It Fl L
Follow all symbolic links to perform a logical file system traversal.
.It Fl O
Force the archive to be one volume.
If a volume ends prematurely,
.Nm
will not prompt for a new volume.
This option can be useful for
automated tasks where error recovery cannot be performed by a human.
.It Fl P
Do not follow symbolic links, perform a physical file system traversal.
This is the default mode.
@ -1176,6 +1183,7 @@ The options
.Fl G ,
.Fl H ,
.Fl L ,
.Fl O ,
.Fl P ,
.Fl T ,
.Fl U ,

1
bin/pax/pax.c
View File

@ -85,6 +85,7 @@ int vflag; /* produce verbose output */
int Dflag; /* same as uflag except inode change time */
int Hflag; /* follow command line symlinks (write only) */
int Lflag; /* follow symlinks when writing */
int Oflag; /* limit to single volume */
int Xflag; /* archive files with same device id only */
int Yflag; /* same as Dflg except after name mode */
int Zflag; /* same as uflg except after name mode */