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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/* Utilities for reading/writing fstab, mtab, etc.
Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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.
The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <mntent.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifdef USE_IN_LIBIO
# define flockfile(s) _IO_flockfile (s)
# define funlockfile(s) _IO_funlockfile (s)
#endif
/* Prepare to begin reading and/or writing mount table entries from the
beginning of FILE. MODE is as for `fopen'. */
FILE *
__setmntent (const char *file, const char *mode)
{
return fopen (file, mode);
}
weak_alias (__setmntent, setmntent)
/* Close a stream opened with `setmntent'. */
int
__endmntent (FILE *stream)
{
if (stream) /* SunOS 4.x allows for NULL stream */
fclose (stream);
return 1; /* SunOS 4.x says to always return 1 */
}
weak_alias (__endmntent, endmntent)
/* Read one mount table entry from STREAM. Returns a pointer to storage
reused on the next call, or null for EOF or error (use feof/ferror to
check). */
struct mntent *
__getmntent_r (FILE *stream, struct mntent *mp, char *buffer, int bufsiz)
{
char *head;
flockfile (stream);
do
{
char *end_ptr;
if (fgets_unlocked (buffer, bufsiz, stream) == NULL)
{
funlockfile (stream);
return NULL;
}
end_ptr = strchr (buffer, '\n');
if (end_ptr != NULL) /* chop newline */
*end_ptr = '\0';
else
{
/* Not the whole line was read. Do it now but forget it. */
char tmp[1024];
while (fgets_unlocked (tmp, sizeof tmp, stream) != NULL)
if (strchr (tmp, '\n') != NULL)
break;
}
head = buffer + strspn (buffer, " \t");
/* skip empty lines and comment lines: */
} while (head[0] == '\0' || head[0] == '#');
mp->mnt_fsname = __strsep (&head, " \t") ?: (char *) "";
if (head)
head += strspn (head, " \t");
mp->mnt_dir = __strsep (&head, " \t") ?: (char *) "";
if (head)
head += strspn (head, " \t");
mp->mnt_type = __strsep (&head, " \t") ?: (char *) "";
if (head)
head += strspn (head, " \t");
mp->mnt_opts = __strsep (&head, " \t") ?: (char *) "";
switch (head ? sscanf (head, " %d %d ", &mp->mnt_freq, &mp->mnt_passno) : 0)
{
case 0:
mp->mnt_freq = 0;
case 1:
mp->mnt_passno = 0;
case 2:
}
funlockfile (stream);
return mp;
}
weak_alias (__getmntent_r, getmntent_r)
/* Write the mount table entry described by MNT to STREAM.
Return zero on success, nonzero on failure. */
int
__addmntent (FILE *stream, const struct mntent *mnt)
{
if (fseek (stream, 0, SEEK_END))
return 1;
return (fprintf (stream, "%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)
< 0 ? 1 : 0);
}
weak_alias (__addmntent, addmntent)
/* Search MNT->mnt_opts for an option matching OPT.
Returns the address of the substring, or null if none found. */
char *
__hasmntopt (const struct mntent *mnt, const char *opt)
{
const size_t optlen = strlen (opt);
char *rest = mnt->mnt_opts, *p;
while ((p = strstr (rest, opt)) != NULL)
{
if (p == rest
|| (p[-1] == ','
&& (p[optlen] == '\0' ||
p[optlen] == '=' ||
p[optlen] == ',')))
return p;
rest = strchr (rest, ',');
if (rest == NULL)
break;
++rest;
}
return NULL;
}
weak_alias (__hasmntopt, hasmntopt)
|
