mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-10-30 14:55:26 +03:00
82962619c6
Here we get a very dumb getpwnam() and getgrnam() for klibc to stop the confusion of not handling textual id's if klibc is used. If used with initrd we just need to copy the /etc/passwd and /etc/group file and all should work well.
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/*
|
|
* klibc_fixups.c - very simple implementation of stuff missing in klibc
|
|
*
|
|
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
|
|
* Copyright (C) 2004 Kay Sievers <kay@vrfy.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#ifdef __KLIBC__
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "klibc_fixups.h"
|
|
#include "logging.h"
|
|
|
|
#define PW_FILE "/etc/passwd"
|
|
#define GR_FILE "/etc/group"
|
|
|
|
/* return the id of a passwd style line, selected by the users name */
|
|
static unsigned long get_id_by_name(const char *uname, const char *dbfile)
|
|
{
|
|
unsigned long id = -1;
|
|
FILE *file;
|
|
char buf[255];
|
|
char *pos;
|
|
char *name;
|
|
char *idstr;
|
|
char *tail;
|
|
|
|
file = fopen(dbfile, "r");
|
|
if (file == NULL) {
|
|
dbg("unable to open file '%s'", dbfile);
|
|
return -1;
|
|
}
|
|
|
|
while (1) {
|
|
pos = fgets(buf, sizeof(buf), file);
|
|
if (pos == NULL)
|
|
break;
|
|
|
|
/* get name */
|
|
name = strsep(&pos, ":");
|
|
if (name == NULL)
|
|
continue;
|
|
|
|
/* skip pass */
|
|
if (strsep(&pos, ":") == NULL)
|
|
continue;
|
|
|
|
/* get id */
|
|
idstr = strsep(&pos, ":");
|
|
if (idstr == NULL)
|
|
continue;
|
|
|
|
if (strcmp(uname, name) == 0) {
|
|
id = strtoul(idstr, &tail, 10);
|
|
if (tail == NULL)
|
|
id = -1;
|
|
else
|
|
dbg("id for '%s' is '%li'", name, id);
|
|
break;
|
|
}
|
|
}
|
|
|
|
fclose(file);
|
|
return id;
|
|
}
|
|
|
|
struct passwd *getpwnam(const char *name)
|
|
{
|
|
static struct passwd pw;
|
|
|
|
memset(&pw, 0x00, sizeof(struct passwd));
|
|
pw.pw_uid = (uid_t) get_id_by_name(name, PW_FILE);
|
|
if (pw.pw_uid < 0)
|
|
return NULL;
|
|
else
|
|
return &pw;
|
|
}
|
|
|
|
struct group *getgrnam(const char *name)
|
|
{
|
|
static struct group gr;
|
|
|
|
memset(&gr, 0x00, sizeof(struct group));
|
|
gr.gr_gid = (gid_t) get_id_by_name(name, GR_FILE);
|
|
if (gr.gr_gid < 0)
|
|
return NULL;
|
|
else
|
|
return &gr;
|
|
}
|
|
|
|
#endif
|