1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* getpwnam.c - This file is part of the libc-8086/pwd package for ELKS,
* Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <features.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include "config.h"
#ifdef __UCLIBC_HAS_THREADS__
#include <pthread.h>
static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
# define LOCK pthread_mutex_lock(&mylock)
# define UNLOCK pthread_mutex_unlock(&mylock);
#else
# define LOCK
# define UNLOCK
#endif
int getpwnam_r (const char *name, struct passwd *password,
char *buff, size_t buflen, struct passwd **result)
{
int ret;
int passwd_fd;
if (name == NULL) {
return EINVAL;
}
if ((passwd_fd = open(_PATH_PASSWD, O_RDONLY)) < 0) {
return ENOENT;
}
while ((ret=__getpwent_r(password, buff, buflen, passwd_fd)) == 0) {
if (!strcmp(password->pw_name, name)) {
*result=password;
close(passwd_fd);
return 0;
}
}
close(passwd_fd);
return ret;
}
struct passwd *getpwnam(const char *name)
{
int ret;
static char line_buff[PWD_BUFFER_SIZE];
static struct passwd pwd, *result;
LOCK;
if ((ret=getpwnam_r(name, &pwd, line_buff, sizeof(line_buff), &result)) == 0) {
UNLOCK;
return &pwd;
}
__set_errno(ret);
UNLOCK;
return NULL;
}
|
