Date: Mon, 19 May 2003 17:14:47 +0200 (CEST) From: Jan Willem Knopper <jwk@stack.nl> To: FreeBSD-gnats-submit@FreeBSD.org Cc: Jilles Tjoelker <jilles@stack.nl> Subject: bin/52433: lines in /etc/group longer than 1024 chars are ignored Message-ID: <20030519151447.3EC9B1CC5D@turtle.stack.nl> Resent-Message-ID: <200305191520.h4JFK99O046930@freefall.freebsd.org>
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>Number: 52433
>Category: bin
>Synopsis: lines in /etc/group longer than 1024 chars are ignored
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon May 19 08:20:09 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator: Jan Willem Knopper
>Release: FreeBSD 5.1-BETA i386
>Organization:
M.C.G.V. Stack
>Environment:
System: FreeBSD turtle.stack.nl 5.1-BETA FreeBSD 5.1-BETA #10: Mon May 12 15:30:54 CEST 2003 jilles@turtle.stack.nl:/usr/obj/usr/src/sys/TURTLE i386
since the manpage of /etc/group mentioned something about compatibility and
long lines: (from before FreeBSD 3.0)
compatibility options in kernel config (as in GENERIC)
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 #Compatible with FreeBSD4
>Description:
getgrouplist only returns groups with lines larger than 1024
characters if getgrnam is previously called on that group in that
process.
This problem only occurs on FreeBSD 5 and not on FreeBSD 4.
>How-To-Repeat:
#include <stdio.h>
#include <grp.h>
#include <unistd.h>
int
main(void)
{
struct group *longgroup;
int i, ngroups=16; /* NGROUPS_MAX is 16 */
gid_t basegid=0, groups[16];
if ((i=getgrouplist("user", basegid, groups, &ngroups))==-1) {
perror("getgrouplist");
return 1;
}
printf("ngroups:%d\n", ngroups);
printf("%d", groups[1]);
for (i=1;i<ngroups;i++) {
printf(", %d", groups[i]);
}
printf("\n");
longgroup=getgrnam("longgroup");
if (!longgroup) {
perror("getgrnam");
return 1;
}
basegid=0; ngroups=16;
if ((i=getgrouplist("user", basegid, groups, &ngroups))==-1) {
perror("getgrouplist");
return 1;
}
printf("ngroups:%d\n", ngroups);
printf("%d", groups[1]);
for (i=1;i<ngroups;i++) {
printf(", %d", groups[i]);
}
printf("\n");
return(0);
}
>Fix:
None known.
>Release-Note:
>Audit-Trail:
>Unformatted:
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