shadow/lib/groupio.c

196 lines
3.3 KiB
C
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#include <config.h>
#ident "$Id$"
#include "prototypes.h"
#include "defines.h"
#include "commonio.h"
#include "groupio.h"
extern int putgrent (const struct group *, FILE *);
extern struct group *sgetgrent (const char *);
struct group *__gr_dup (const struct group *grent)
{
struct group *gr;
int i;
if (!(gr = (struct group *) malloc (sizeof *gr)))
return NULL;
*gr = *grent;
if (!(gr->gr_name = strdup (grent->gr_name)))
return NULL;
if (!(gr->gr_passwd = strdup (grent->gr_passwd)))
return NULL;
for (i = 0; grent->gr_mem[i]; i++);
gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *));
if (!gr->gr_mem)
return NULL;
for (i = 0; grent->gr_mem[i]; i++) {
gr->gr_mem[i] = strdup (grent->gr_mem[i]);
if (!gr->gr_mem[i])
return NULL;
}
gr->gr_mem[i] = NULL;
return gr;
}
static void *group_dup (const void *ent)
{
const struct group *gr = ent;
return __gr_dup (gr);
}
static void group_free (void *ent)
{
struct group *gr = ent;
free (gr->gr_name);
free (gr->gr_passwd);
while (*(gr->gr_mem)) {
free (*(gr->gr_mem));
gr->gr_mem++;
}
free (gr);
}
static const char *group_getname (const void *ent)
{
const struct group *gr = ent;
return gr->gr_name;
}
static void *group_parse (const char *line)
{
return (void *) sgetgrent (line);
}
static int group_put (const void *ent, FILE * file)
{
const struct group *gr = ent;
return (putgrent (gr, file) == -1) ? -1 : 0;
}
static struct commonio_ops group_ops = {
group_dup,
group_free,
group_getname,
group_parse,
group_put,
fgetsx,
fputsx
};
static struct commonio_db group_db = {
GROUP_FILE, /* filename */
&group_ops, /* ops */
NULL, /* fp */
NULL, /* head */
NULL, /* tail */
NULL, /* cursor */
0, /* changed */
0, /* isopen */
0, /* locked */
0 /* readonly */
};
int gr_name (const char *filename)
{
return commonio_setname (&group_db, filename);
}
int gr_lock (void)
{
return commonio_lock (&group_db);
}
int gr_open (int mode)
{
return commonio_open (&group_db, mode);
}
const struct group *gr_locate (const char *name)
{
return commonio_locate (&group_db, name);
}
int gr_update (const struct group *gr)
{
return commonio_update (&group_db, (const void *) gr);
}
int gr_remove (const char *name)
{
return commonio_remove (&group_db, name);
}
int gr_rewind (void)
{
return commonio_rewind (&group_db);
}
const struct group *gr_next (void)
{
return commonio_next (&group_db);
}
int gr_close (void)
{
return commonio_close (&group_db);
}
int gr_unlock (void)
{
return commonio_unlock (&group_db);
}
void __gr_set_changed (void)
{
group_db.changed = 1;
}
struct commonio_entry *__gr_get_head (void)
{
return group_db.head;
}
struct commonio_db *__gr_get_db (void)
{
return &group_db;
}
void __gr_del_entry (const struct commonio_entry *ent)
{
commonio_del_entry (&group_db, ent);
}
static int gr_cmp (const void *p1, const void *p2)
{
gid_t u1, u2;
if ((*(struct commonio_entry **) p1)->eptr == NULL)
return 1;
if ((*(struct commonio_entry **) p2)->eptr == NULL)
return -1;
u1 = ((struct group *) (*(struct commonio_entry **) p1)->eptr)->gr_gid;
u2 = ((struct group *) (*(struct commonio_entry **) p2)->eptr)->gr_gid;
if (u1 < u2)
return -1;
else if (u1 > u2)
return 1;
else
return 0;
}
/* Sort entries by GID */
int gr_sort ()
{
return commonio_sort (&group_db, gr_cmp);
}