This is an example of how to import a gadget from file. Common reason of doing this is to create gadget base on schema from other devices or resurect gadget after reboot.
#include <errno.h>
#include <string.h>
#include <stdio.h>
int main(int argc, char **argv)
{
int ret = -EINVAL;
int usbg_ret;
FILE *input;
if (argc != 3) {
fprintf(stderr, "Usage: gadget-import gadget_name file_name\n");
return ret;
}
input = fopen(argv[2], "r");
if (!input) {
fprintf(stderr, "Error on fopen. Error: %s\n", strerror(errno));
goto out1;
}
usbg_ret =
usbg_init(
"/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB gadget init\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on import gadget\n");
if (usbg_ret == USBG_ERROR_INVALID_FORMAT)
fprintf(stderr, "Line: %d. Error: %s\n",
goto out3;
}
ret = 0;
out3:
out2:
fclose(input);
out1:
return ret;
}
const char * usbg_strerror(usbg_error e)
Get the short description of error.
Definition usbg_error.c:123
int usbg_import_gadget(usbg_state *s, FILE *stream, const char *name, usbg_gadget **g)
Imports usb gadget from file.
Definition usbg_schemes_libconfig.c:1805
int usbg_init(const char *configfs_path, usbg_state **state)
Initialize the libusbgx library state.
Definition usbg.c:1086
void usbg_cleanup(usbg_state *s)
Clean up the libusbgx library state.
Definition usbg.c:1131
int usbg_get_gadget_import_error_line(usbg_state *s)
Get line number where gadget import error occurred.
Definition usbg_schemes_libconfig.c:1889
const char * usbg_get_gadget_import_error_text(usbg_state *s)
Get text of error which occurred during last gadget import.
Definition usbg_schemes_libconfig.c:1881
const char * usbg_error_name(usbg_error e)
Get the error name as a constant string.
Definition usbg_error.c:62
Definition usbg_internal.h:93