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Activate the -h flag which tells chown/chgrp to work on the symlink itself

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using lchown().  Most of the code was already here, the option was
recognised but ignored for SYSV/POSIX.2(?) compatability.
This commit is contained in:
Peter Wemm 1997-03-31 13:03:49 +00:00
parent 743c3e66c8
commit 2e08522b02
3 changed files with 29 additions and 38 deletions
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17
usr.sbin/chown/chgrp.1
View File

@ -47,6 +47,7 @@
.Op Fl H | Fl L | Fl P
.Oc
.Op Fl f
.Op Fl h
.Ar group
.Ar files ...
.Sh DESCRIPTION
@ -77,15 +78,11 @@ in the files instead of just the files themselves.
.It Fl f
The force option ignores errors, except for usage errors and doesn't
query about strange modes (unless the user does not have proper permissions).
.It Fl h
If the file is a symbolic link, the group ID of the link itself is changed
rather than the file that is pointed to.
.El
.Pp
Symbolic links don't have groups, so unless the
.Fl H
or
.Fl L
option is set,
.Nm chgrp
on a symbolic link always succeeds and has no effect.
The
.Fl H ,
.Fl L
@ -113,11 +110,7 @@ The
.Nm chgrp
utility exits 0 on success, and >0 if an error occurs.
.Sh COMPATIBILITY
Previous versions of the
.Nm chgrp
utility changed the group of symbolic links specified on the command
line.
In this system, symbolic links do not have groups.
In previous versions of this system, symbolic links did not have groups.
.Sh FILES
.Bl -tag -width /etc/group -compact
.It Pa /etc/group

21
usr.sbin/chown/chown.8
View File

@ -30,7 +30,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)chown.8 8.3 (Berkeley) 3/31/94
.\" $Id$
.\" $Id: chown.8,v 1.4 1997/02/22 16:04:35 peter Exp $
.\"
.Dd March 31, 1994
.Dt CHOWN 8
@ -45,6 +45,7 @@
.Op Fl H | Fl L | Fl P
.Oc
.Op Fl f
.Op Fl h
.Ar owner Op Ar :group
.Ar file ...
.Nm chown
@ -53,6 +54,7 @@
.Op Fl H | Fl L | Fl P
.Oc
.Op Fl f
.Op Fl h
.Ar :group
.Ar file ...
.Sh DESCRIPTION
@ -80,15 +82,11 @@ in the files instead of just the files themselves.
.It Fl f
Don't report any failure to change file owner or group, nor modify
the exit status to reflect such failures.
.It Fl h
If the file is a symbolic link, change the user ID and/or the group ID
of the link itself rather than the file that the link points to.
.El
.Pp
Symbolic links don't have owners, so unless the
.Fl H
or
.Fl L
option is set,
.Nm chown
on a symbolic link always succeeds and has no effect.
The
.Fl H ,
.Fl L
@ -133,11 +131,8 @@ utility used the dot (``.'') character to distinguish the group name.
This has been changed to be a colon (``:'') character so that user and
group names may contain the dot character.
.Pp
Previous versions of the
.Nm chown
utility changed the owner of symbolic links specified on the command
line.
In this system, symbolic links do not have owners.
On previous versions of this system, symbolic links did not have
owners.
.Sh SEE ALSO
.Xr chgrp 1 ,
.Xr find 1 ,

29
usr.sbin/chown/chown.c
View File

@ -64,7 +64,7 @@ void usage __P((void));
uid_t uid;
gid_t gid;
int Rflag, ischown, fflag;
int Rflag, ischown, fflag, hflag;
char *gname, *myname;
int
@ -102,13 +102,6 @@ main(argc, argv)
fflag = 1;
break;
case 'h':
/*
* In System V (and probably POSIX.2) the -h option
* causes chown/chgrp to change the owner/group of
* the symbolic link. 4.4BSD's symbolic links don't
* have owners/groups, so it's an undocumented noop.
* Do syntax checking, though.
*/
hflag = 1;
break;
case '?':
@ -175,13 +168,23 @@ main(argc, argv)
* don't point to anything and ones that we found
* doing a physical walk.
*/
continue;
if (hflag)
break;
else
continue;
default:
break;
}
if (chown(p->fts_accpath, uid, gid) && !fflag) {
chownerr(p->fts_path);
rval = 1;
if (hflag) {
if (lchown(p->fts_accpath, uid, gid) && !fflag) {
chownerr(p->fts_path);
rval = 1;
}
} else {
if (chown(p->fts_accpath, uid, gid) && !fflag) {
chownerr(p->fts_path);
rval = 1;
}
}
}
if (errno)
@ -266,7 +269,7 @@ void
usage()
{
(void)fprintf(stderr,
"usage: %s [-R [-H | -L | -P]] [-f] %s file ...\n",
"usage: %s [-R [-H | -L | -P]] [-f] [-h] %s file ...\n",
myname, ischown ? "[owner][:group]" : "group");
exit(1);
}