/**
* Usage: -f file -i - create a filesystem with name 'file'
* Usage: -f file -o - open a filesystem 'file'
* Usage: -f file -c path - create a file with path 'path' in a filesystem 'file'
*/
int main(int argc, char ** argv) {
char *value = 0;
int option;
while ((option = getopt (argc, argv, "f:ioc:")) != -1) {
switch(option) {
case 'f':
value = optarg;
break;
case 'i':
if(value != 0) {
init_file_system(value);
}
break;
case 'o':
open_file_system(value);
break;
case 'c':
creat_file(value, optarg);
break;
}
}
int fdfs = simplefs_openfs("filesystem");
simplefs_creat("/a.txt", fdfs);
int fd = simplefs_open("/a.txt", READ_AND_WRITE, fdfs);
printf("Result of simplefs_open %d\n", fd);
printf("Wrint to file result %d", simplefs_write(fd, "adam to glupi programista", 15, fdfs));
char result[20];
simplefs_lseek(fd, SEEK_SET,0,fdfs);
printf("Readig from file %d", simplefs_read(fd, result, 10, fdfs));
result[10] = '\0';
printf("================Read================\n %s\n", result);
return 0;
}
void creat_file(char *filesystem, char *path) {
int fdfs = open_file_system(filesystem);
if(fdfs < -1) {
return;
}
if(simplefs_creat(path, fdfs) == FILE_ALREADY_EXISTS) {
printf("Plik już istnieje!\n");
}
}
int upload_file(char *name,char *dest_name)
{
struct dirent de;
int retVal=0;
do {
struct stat st;
if (stat(name,&st)) {
fprintf(stderr,"ERROR: Could not stat file '%s'\n",name);
perror("stat() failed");
}
printf("File '%s' is %ld bytes long.\n",name,(long)st.st_size);
if (!file_system_found) open_file_system();
if (!file_system_found) {
fprintf(stderr,"ERROR: Could not open file system.\n");
retVal=-1;
break;
}
if (fat_opendir("/")) { retVal=-1; break; }
printf("Opened directory, dir_sector=%d (absolute sector = %d)\n",dir_sector,partition_start+dir_sector);
while(!fat_readdir(&de)) {
if (de.d_name[0]) printf("%13s %d\n",de.d_name,(int)de.d_off);
// else dump_bytes(0,"empty dirent",&dir_sector_buffer[dir_sector_offset],32);
if (!strcasecmp(de.d_name,dest_name)) {
// Found file, so will replace it
printf("%s already exists on the file system, beginning at cluster %d\n",name,(int)de.d_ino);
break;
}
}
if (dir_sector==-1) {
// File does not (yet) exist, get ready to create it
printf("%s does not yet exist on the file system -- searching for empty directory slot to create it in.\n",name);
if (fat_opendir("/")) { retVal=-1; break; }
struct dirent de;
while(!fat_readdir(&de)) {
if (!de.d_name[0]) {
printf("Found empty slot at dir_sector=%d, dir_sector_offset=%d\n",
dir_sector,dir_sector_offset);
// Create directory entry, and write sector back to SD card
unsigned char dir[32];
bzero(dir,32);
// Write name
for(int i=0;i<11;i++) dir[i]=0x20;
for(int i=0;i<8;i++)
if (dest_name[i]=='.') {
// Write out extension
for(int j=0;j<3;j++)
if (dest_name[i+1+j]) dir[8+j]=dest_name[i+1+j];
break;
} else if (!dest_name[i]) break;
else dir[i]=dest_name[i];
// Set file attributes (only archive bit)
dir[0xb]=0x20;
// Store create time and date
time_t t=time(0);
struct tm *tm=localtime(&t);
dir[0xe]=(tm->tm_sec>>1)&0x1F; // 2 second resolution
dir[0xe]|=(tm->tm_min&0x7)<<5;
dir[0xf]=(tm->tm_min&0x3)>>3;
dir[0xf]|=(tm->tm_hour)<<2;
dir[0x10]=tm->tm_mday&0x1f;
dir[0x10]|=((tm->tm_mon+1)&0x7)<<5;
dir[0x11]=((tm->tm_mon+1)&0x1)>>3;
dir[0x11]|=(tm->tm_year-80)<<1;
dump_bytes(0,"New directory entry",dir,32);
// (Cluster and size we set after writing to the file)
// Copy back into directory sector, and write it
bcopy(dir,&dir_sector_buffer[dir_sector_offset],32);
if (write_sector(partition_start+dir_sector,dir_sector_buffer)) {
printf("Failed to write updated directory sector.\n");
retVal=-1; break; }
break;
}
}
}
