1 /* 2 * Mailbox Daemon Implementation 3 * 4 * Copyright 2018 IBM 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 */ 19 #define _GNU_SOURCE 20 #include <stdbool.h> 21 #include <stdio.h> 22 #include <string.h> 23 24 #include "common.h" 25 26 static bool is_pnor_part(const char *str) 27 { 28 return strcasestr(str, "pnor") != NULL; 29 } 30 31 char *get_dev_mtd(void) 32 { 33 FILE *f; 34 char *ret = NULL, *pos = NULL; 35 char line[255]; 36 37 f = fopen("/proc/mtd", "r"); 38 if (!f) 39 return NULL; 40 41 while (!pos && fgets(line, sizeof(line), f) != NULL) { 42 /* Going to have issues if we didn't get the full line */ 43 if (line[strlen(line) - 1] != '\n') 44 break; 45 46 if (is_pnor_part(line)) { 47 pos = strchr(line, ':'); 48 if (!pos) 49 break; 50 } 51 } 52 fclose(f); 53 54 if (pos) { 55 *pos = '\0'; 56 if (asprintf(&ret, "/dev/%s", line) == -1) 57 ret = NULL; 58 } 59 60 return ret; 61 } 62