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
|
#include <stdio.h>
#include <string.h>
#include <mntent.h>
#include <errno.h>
static char *internal_buf;
static size_t internal_bufsize;
#define SENTINEL (char *)&internal_buf
FILE *setmntent(const char *name, const char *mode)
{
return fopen(name, mode);
}
int endmntent(FILE *f)
{
if (f) fclose(f);
return 1;
}
struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen)
{
int cnt, n[8], use_internal = (linebuf == SENTINEL);
mnt->mnt_freq = 0;
mnt->mnt_passno = 0;
do {
if (use_internal) {
getline(&internal_buf, &internal_bufsize, f);
linebuf = internal_buf;
} else {
fgets(linebuf, buflen, f);
}
if (feof(f) || ferror(f)) return 0;
if (!strchr(linebuf, '\n')) {
fscanf(f, "%*[^\n]%*[\n]");
errno = ERANGE;
return 0;
}
cnt = sscanf(linebuf, " %n%*s%n %n%*s%n %n%*s%n %n%*s%n %d %d",
n, n+1, n+2, n+3, n+4, n+5, n+6, n+7,
&mnt->mnt_freq, &mnt->mnt_passno);
} while (cnt < 2 || linebuf[n[0]] == '#');
linebuf[n[1]] = 0;
linebuf[n[3]] = 0;
linebuf[n[5]] = 0;
linebuf[n[7]] = 0;
mnt->mnt_fsname = linebuf+n[0];
mnt->mnt_dir = linebuf+n[2];
mnt->mnt_type = linebuf+n[4];
mnt->mnt_opts = linebuf+n[6];
return mnt;
}
struct mntent *getmntent(FILE *f)
{
static struct mntent mnt;
return getmntent_r(f, &mnt, SENTINEL, 0);
}
int addmntent(FILE *f, const struct mntent *mnt)
{
if (fseek(f, 0, SEEK_END)) return 1;
return fprintf(f, "%s\t%s\t%s\t%s\t%d\t%d\n",
mnt->mnt_fsname, mnt->mnt_dir, mnt->mnt_type, mnt->mnt_opts,
mnt->mnt_freq, mnt->mnt_passno) < 0;
}
char *hasmntopt(const struct mntent *mnt, const char *opt)
{
return strstr(mnt->mnt_opts, opt);
}
|
