[svn-upgrade] Integrating new upstream version, shadow (19990709)

lib/groupio.c

@@ -0,0 +1,185 @@
+
+#include <config.h>
+
+#include "rcsid.h"
+RCSID("$Id: groupio.c,v 1.7 1998/01/29 23:22:28 marekm Exp $")
+
+#include "prototypes.h"
+#include "defines.h"
+
+#include "commonio.h"
+#include "groupio.h"
+
+extern int putgrent P_((const struct group *, FILE *));
+extern struct group *sgetgrent P_((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 */
+	0		/* use_lckpwdf */
+};
+
+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;
+}
+
+void
+__gr_del_entry(const struct commonio_entry *ent)
+{
+	commonio_del_entry(&group_db, ent);
+}