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piimg-loopdev.c
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/
piimg-loopdev.c
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#include <stdio.h>
#include <parted/parted.h>
#include "builtin.h"
#include "loopdev.h"
#include "command.h"
static int cmd_find_unused(int argc, char* argv[]);
static int cmd_setup_device(int argc, char* argv[]);
static struct cmd_struct commands[] = {
{"find_unused", cmd_find_unused},
{"setup_device", cmd_setup_device}
};
static void print_usage() {
const char usage_string[] =
"piimg loopdev <find_unused, setup_device> [<img-file> <offset>]";
printf("Usage:\n\t%s\n", usage_string);
}
static int cmd_find_unused(int argc, char* argv[]) {
char * free_loop = loopdev_find_unused();
printf("%s\n", free_loop);
free(free_loop);
return 0;
}
static int cmd_setup_device(int argc, char* argv[]) {
char * free_loop = loopdev_find_unused();
printf("Loop device: %s\n", free_loop);
if(loopdev_setup_device(argv[0], atoi(argv[1]), free_loop)) {
fprintf(stderr, "Failed to associate loop device (%s) to file (%s).\n", free_loop, argv[0]);
goto error;
}
free(free_loop);
return 0;
error:
free(free_loop);
return 1;
}
int cmd_loopdev(int argc, char* argv[]) {
if(argc == 0 || run_argv(commands, ARRAY_SIZE(commands), argc, argv)) {
// No command supplied or invalid command, print usage.
print_usage();
return 1;
}
return 0;
}