1 /* Copyright (C) 1995-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
23 #include <bits/libc-lock.h>
25 #define BUFFER_SIZE 0x1fc0
31 struct mntent fs_mntres;
35 static struct fstab_state *fstab_init (int opt_rewind);
36 static struct mntent *fstab_fetch (struct fstab_state *state);
37 static struct fstab *fstab_convert (struct fstab_state *state);
39 static struct fstab_state fstab_state;
45 return fstab_init (1) != NULL;
52 struct fstab_state *state;
54 state = fstab_init (0);
57 if (fstab_fetch (state) == NULL)
59 return fstab_convert (state);
67 struct fstab_state *state;
70 state = fstab_init (1);
73 while ((m = fstab_fetch (state)) != NULL)
74 if (strcmp (m->mnt_fsname, name) == 0)
75 return fstab_convert (state);
84 struct fstab_state *state;
87 state = fstab_init (1);
90 while ((m = fstab_fetch (state)) != NULL)
91 if (strcmp (m->mnt_dir, name) == 0)
92 return fstab_convert (state);
100 struct fstab_state *state;
102 state = &fstab_state;
103 if (state->fs_fp != NULL)
105 (void) __endmntent (state->fs_fp);
111 static struct fstab_state *
112 fstab_init (int opt_rewind)
114 struct fstab_state *state;
118 state = &fstab_state;
120 buffer = state->fs_buffer;
123 buffer = (char *) malloc (BUFFER_SIZE);
126 state->fs_buffer = buffer;
137 fp = __setmntent (_PATH_FSTAB, "r");
147 static struct mntent *
148 fstab_fetch (struct fstab_state *state)
150 return __getmntent_r (state->fs_fp, &state->fs_mntres,
151 state->fs_buffer, BUFFER_SIZE);
155 static struct fstab *
156 fstab_convert (struct fstab_state *state)
161 m = &state->fs_mntres;
164 f->fs_spec = m->mnt_fsname;
165 f->fs_file = m->mnt_dir;
166 f->fs_vfstype = m->mnt_type;
167 f->fs_mntops = m->mnt_opts;
168 f->fs_type = (__hasmntopt (m, FSTAB_RW) ? FSTAB_RW :
169 __hasmntopt (m, FSTAB_RQ) ? FSTAB_RQ :
170 __hasmntopt (m, FSTAB_RO) ? FSTAB_RO :
171 __hasmntopt (m, FSTAB_SW) ? FSTAB_SW :
172 __hasmntopt (m, FSTAB_XX) ? FSTAB_XX :
174 f->fs_freq = m->mnt_freq;
175 f->fs_passno = m->mnt_passno;
180 /* Make sure the memory is freed if the programs ends while in
181 memory-debugging mode and something actually was allocated. */
182 libc_freeres_fn (fstab_free)
186 buffer = fstab_state.fs_buffer;
187 free ((void *) buffer);