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/*
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
* Copyright (C) 1995-2020 Free Software Foundation, Inc.
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mntent.h>
#include <bits/uClibc_mutex.h>
__UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER);
/* Reentrant version of getmntent. */
struct mntent *getmntent_r (FILE *filep,
struct mntent *mnt, char *buff, int bufsize)
{
static const char sep[] = " \t\n";
char *cp, *ptrptr;
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;
}
libc_hidden_def(getmntent_r)
struct mntent *getmntent(FILE * filep)
{
struct mntent *tmp;
static char *buff = NULL;
static struct mntent mnt;
__UCLIBC_MUTEX_LOCK(mylock);
if (!buff) {
buff = malloc(BUFSIZ);
if (!buff)
abort();
}
tmp = getmntent_r(filep, &mnt, buff, BUFSIZ);
__UCLIBC_MUTEX_UNLOCK(mylock);
return(tmp);
}
int addmntent(FILE * filep, const struct mntent *mnt)
{
if (fseek(filep, 0, SEEK_END) < 0)
return 1;
return (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) < 0 ? 1 : 0);
}
/* 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(p, ',');
if (rest == NULL)
break;
++rest;
}
return NULL;
}
FILE *setmntent(const char *name, const char *mode)
{
return fopen(name, mode);
}
libc_hidden_def(setmntent)
int endmntent(FILE * filep)
{
if (filep != NULL)
fclose(filep);
return 1;
}
libc_hidden_def(endmntent)
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