124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <mtd/mtd-user.h>
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#include "misc_message.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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static int get_mtd_partition_index_byname(const char* name)
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{
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char * line = NULL;
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size_t len = 0;
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ssize_t read;
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int index = 0;
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FILE* fp;
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fp = fopen("/proc/mtd","r");
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if(fp == NULL){
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LOGE("open /proc/mtd failed(%s)\n",strerror(errno));
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return -1;
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}
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while ((read = getline(&line, &len, fp)) != -1) {
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if( strstr(line,name) == NULL )
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continue;
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index = line[3] - '0';
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break;
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}
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free(line);
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return index;
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}
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static int is_mmc_or_mtd()
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{
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int part_index = 0;
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int is_mtd = access("/dev/mtd0", F_OK); //mode填F_OK试试
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if(is_mtd == -1)
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return 0; //mmc
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#if 0
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const char* cmd = "device=${partitions#*misc@mtdblock}; device=${device%%:*}; echo $device";
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int bytes;
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char buf[10];
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FILE *stream;
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stream = popen( cmd, "r" );
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if(!stream) return -1;
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bytes = fread( buf, sizeof(char), sizeof(buf), stream);
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pclose(stream);
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part_index = atoi(buf);
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#endif
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part_index = get_mtd_partition_index_byname("misc");
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return part_index;//mtd
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}
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int get_bootloader_message_block(struct bootloader_message *out,
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const char* misc)
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{
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char device[50];
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FILE* f;
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// int id = is_mmc_or_mtd();
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// if(id == 0){
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strcpy(device,misc);
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// }
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// else{
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// sprintf(device,"/dev/mtd%d",id);
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// }
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f = fopen(device, "rb");
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if (f == NULL) {
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LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
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return -1;
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}
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struct bootloader_message temp;
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int count = fread(&temp, sizeof(temp), 1, f);
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if (count != 1) {
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LOGE("Failed reading %s\n(%s)\n", device, strerror(errno));
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fclose(f);
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return -1;
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}
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if (fclose(f) != 0) {
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LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
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return -1;
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}
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memcpy(out, &temp, sizeof(temp));
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return 0;
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}
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int set_bootloader_message_block(const struct bootloader_message *in,
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const char* misc)
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{
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char device[50];
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FILE* f;
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int id = is_mmc_or_mtd();
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// if(id == 0){
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strcpy(device,misc);
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// }
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// else{
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// sprintf(device,"/dev/mtd%d",id);
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// system("mtd erase misc");
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// }
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f = fopen(device,"wb");
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if (f == NULL) {
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LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
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return -1;
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}
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int count = fwrite(in, sizeof(*in), 1, f);
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if (count != 1) {
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LOGE("Failed writing %s\n(%s)\n", device, strerror(errno));
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fclose(f);
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return -1;
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}
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fflush(f);
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if (fclose(f) != 0) {
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LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
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return -1;
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}
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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