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/*
* dietlibc/lib/grent.c - getgrent(3)/setgrent(3)/endgrent(3) implementation
*
* Copyright 2001 Jeff Garzik <jgarzik@mandrakesoft.com>
*
* This is a brand new implementation, based on the interface
* described in man-pages-1.34-1mdk man pages package.
*/
#include "entlib.h" /* this is our only include */
#define MAX_GROUP_MEMBERS 16 /* matches Linux kernel task struct */
static struct __ent_state *st = NULL; /* state held across calls */
static char *gr_mem[MAX_GROUP_MEMBERS+1];
static struct group gr;
struct group *getgrent(void)
{
char *parts[4], *grouplist;
unsigned int bufptr;
if (__ent_start(_PATH_GROUP, &st))
return NULL;
if (__ent_get_line(st))
goto err_out;
if (__ent_split(st, parts, 4, ':', 1) < 0)
goto err_out;
gr.gr_name = parts[0];
gr.gr_passwd = parts[1];
gr.gr_gid = (gid_t) atoi(parts[2]);
grouplist = parts[3];
memset(&gr_mem, 0, sizeof(gr_mem));
gr.gr_mem = gr_mem;
/* rewind bufptr to beginning of group list */
bufptr = st->bufptr;
st->bufptr = (int) (grouplist - st->ent_buf);
__ent_split(st, gr_mem, MAX_GROUP_MEMBERS, ',', 0);
st->bufptr = bufptr;
return &gr;
err_out:
st->buflen = st->bufptr = 0; /* invalidate file data buffer */
return NULL;
}
void setgrent(void) { __ent_set(st); }
void endgrent(void) { __ent_end(st); st=NULL; }
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