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/*
* Copyright (C) 2014 John Crispin <blogic@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program 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 General Public License for more details.
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "libfstools.h"
int
find_overlay_mount(char *overlay)
{
FILE *fp = fopen("/proc/mounts", "r");
static char line[256];
int ret = -1;
if(!fp)
return ret;
while (ret && fgets(line, sizeof(line), fp))
if (!strncmp(line, overlay, strlen(overlay)))
ret = 0;
fclose(fp);
return ret;
}
/*
* Find path of a device mounted to the given point.
*/
char*
find_mount(char *mp)
{
FILE *fp = fopen("/proc/mounts", "r");
static char line[256];
char *point = NULL;
if(!fp)
return NULL;
while (fgets(line, sizeof(line), fp)) {
char *s, *t = strstr(line, " ");
if (!t) {
fclose(fp);
return NULL;
}
*t = '\0';
t++;
s = strstr(t, " ");
if (!s) {
fclose(fp);
return NULL;
}
*s = '\0';
if (!strcmp(t, mp)) {
fclose(fp);
return line;
}
}
fclose(fp);
return point;
}
char*
find_mount_point(char *block, int mtd_only)
{
FILE *fp = fopen("/proc/mounts", "r");
static char line[256];
int len = strlen(block);
char *point = NULL;
if(!fp)
return NULL;
while (fgets(line, sizeof(line), fp)) {
if (!strncmp(line, block, len)) {
char *p = &line[len + 1];
char *t = strstr(p, " ");
if (!t) {
fclose(fp);
return NULL;
}
*t = '\0';
t++;
if (mtd_only &&
strncmp(t, "jffs2", 5) &&
strncmp(t, "ubifs", 5)) {
fclose(fp);
ULOG_ERR("block is mounted with wrong fs\n");
return NULL;
}
point = p;
break;
}
}
fclose(fp);
return point;
}
int
find_filesystem(char *fs)
{
FILE *fp = fopen("/proc/filesystems", "r");
static char line[256];
int ret = -1;
if (!fp) {
ULOG_ERR("opening /proc/filesystems failed: %s\n", strerror(errno));
goto out;
}
while (ret && fgets(line, sizeof(line), fp))
if (strstr(line, fs))
ret = 0;
fclose(fp);
out:
return ret;
}
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