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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mntent.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
/* Reentrant version of getmntent. */
struct mntent *getmntent_r (FILE *filep,
struct mntent *mnt, char *buff, int bufsize)
{
char *cp, *ptrptr;
const char *sep = " \t\n";
if (!filep || !mnt || !buff)
return NULL;
/* Loop on the file, skipping comment lines. - FvK 03/07/93 */
while ((cp = fgets(buff, bufsize, filep)) != NULL) {
if (buff[0] == '#' || buff[0] == '\n')
continue;
break;
}
/* At the EOF, the buffer should be unchanged. We should
* check the return value from fgets ().
*/
if (cp == NULL)
return NULL;
ptrptr = 0;
mnt->mnt_fsname = strtok_r(buff, sep, &ptrptr);
if (mnt->mnt_fsname == NULL)
return NULL;
mnt->mnt_dir = strtok_r(NULL, sep, &ptrptr);
if (mnt->mnt_dir == NULL)
return NULL;
mnt->mnt_type = strtok_r(NULL, sep, &ptrptr);
if (mnt->mnt_type == NULL)
return NULL;
mnt->mnt_opts = strtok_r(NULL, sep, &ptrptr);
if (mnt->mnt_opts == NULL)
mnt->mnt_opts = "";
cp = strtok_r(NULL, sep, &ptrptr);
mnt->mnt_freq = (cp != NULL) ? atoi(cp) : 0;
cp = strtok_r(NULL, sep, &ptrptr);
mnt->mnt_passno = (cp != NULL) ? atoi(cp) : 0;
return mnt;
}
struct mntent *getmntent(FILE * filep)
{
struct mntent *tmp;
static char *buff = NULL;
static struct mntent mnt;
LOCK;
if (!buff) {
buff = malloc(BUFSIZ);
if (!buff)
abort();
}
tmp = getmntent_r(filep, &mnt, buff, BUFSIZ);
UNLOCK;
return(tmp);
}
int addmntent(FILE * filep, const struct mntent *mnt)
{
if (fseek(filep, 0, SEEK_END) < 0)
return 1;
if (fprintf (filep, "%s %s %s %s %d %d\n", mnt->mnt_fsname, mnt->mnt_dir,
mnt->mnt_type, mnt->mnt_opts, mnt->mnt_freq, mnt->mnt_passno) < 1)
return 1;
return 0;
}
char *hasmntopt(const struct mntent *mnt, const char *opt)
{
return strstr(mnt->mnt_opts, opt);
}
FILE *setmntent(const char *name, const char *mode)
{
return fopen(name, mode);
}
int endmntent(FILE * filep)
{
if (filep != NULL)
fclose(filep);
return 1;
}
|
