1 /*
2 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
3 *
4 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
5 */
6
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <mntent.h>
11 #include <bits/uClibc_mutex.h>
12
13 __UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER);
14
15
16
17 /* Reentrant version of getmntent. */
getmntent_r(FILE * filep,struct mntent * mnt,char * buff,int bufsize)18 struct mntent *getmntent_r (FILE *filep,
19 struct mntent *mnt, char *buff, int bufsize)
20 {
21 static const char sep[] = " \t\n";
22
23 char *cp, *ptrptr;
24
25 if (!filep || !mnt || !buff)
26 return NULL;
27
28 /* Loop on the file, skipping comment lines. - FvK 03/07/93 */
29 while ((cp = fgets(buff, bufsize, filep)) != NULL) {
30 if (buff[0] == '#' || buff[0] == '\n')
31 continue;
32 break;
33 }
34
35 /* At the EOF, the buffer should be unchanged. We should
36 * check the return value from fgets ().
37 */
38 if (cp == NULL)
39 return NULL;
40
41 ptrptr = 0;
42 mnt->mnt_fsname = strtok_r(buff, sep, &ptrptr);
43 if (mnt->mnt_fsname == NULL)
44 return NULL;
45
46 mnt->mnt_dir = strtok_r(NULL, sep, &ptrptr);
47 if (mnt->mnt_dir == NULL)
48 return NULL;
49
50 mnt->mnt_type = strtok_r(NULL, sep, &ptrptr);
51 if (mnt->mnt_type == NULL)
52 return NULL;
53
54 mnt->mnt_opts = strtok_r(NULL, sep, &ptrptr);
55 if (mnt->mnt_opts == NULL)
56 mnt->mnt_opts = "";
57
58 cp = strtok_r(NULL, sep, &ptrptr);
59 mnt->mnt_freq = (cp != NULL) ? atoi(cp) : 0;
60
61 cp = strtok_r(NULL, sep, &ptrptr);
62 mnt->mnt_passno = (cp != NULL) ? atoi(cp) : 0;
63
64 return mnt;
65 }
libc_hidden_def(getmntent_r)66 libc_hidden_def(getmntent_r)
67
68 struct mntent *getmntent(FILE * filep)
69 {
70 struct mntent *tmp;
71 static char *buff = NULL;
72 static struct mntent mnt;
73 __UCLIBC_MUTEX_LOCK(mylock);
74
75 if (!buff) {
76 buff = malloc(BUFSIZ);
77 if (!buff)
78 abort();
79 }
80
81 tmp = getmntent_r(filep, &mnt, buff, BUFSIZ);
82 __UCLIBC_MUTEX_UNLOCK(mylock);
83 return(tmp);
84 }
85
addmntent(FILE * filep,const struct mntent * mnt)86 int addmntent(FILE * filep, const struct mntent *mnt)
87 {
88 if (fseek(filep, 0, SEEK_END) < 0)
89 return 1;
90
91 return (fprintf (filep, "%s %s %s %s %d %d\n", mnt->mnt_fsname, mnt->mnt_dir,
92 mnt->mnt_type, mnt->mnt_opts, mnt->mnt_freq, mnt->mnt_passno) < 0 ? 1 : 0);
93 }
94
hasmntopt(const struct mntent * mnt,const char * opt)95 char *hasmntopt(const struct mntent *mnt, const char *opt)
96 {
97 return strstr(mnt->mnt_opts, opt);
98 }
99
setmntent(const char * name,const char * mode)100 FILE *setmntent(const char *name, const char *mode)
101 {
102 return fopen(name, mode);
103 }
libc_hidden_def(setmntent)104 libc_hidden_def(setmntent)
105
106 int endmntent(FILE * filep)
107 {
108 if (filep != NULL)
109 fclose(filep);
110 return 1;
111 }
112 libc_hidden_def(endmntent)
113