vasilito
b9874d0941
Add redbear-usb-storage-check in-guest binary that validates USB mass storage read and write I/O: discovers /scheme/disk/ devices, writes a test pattern to sector 2048, reads it back, verifies match, restores original content. Updates test-usb-storage-qemu.sh with write-proof verification step. Includes all accumulated Red Bear OS work: kernel patches, relibc patches, driver infrastructure, DRM/GPU, KDE recipes, firmware, validation tooling, build system hardening, and documentation.
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
#include <assert.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
int main(void) {
|
|
// Check that the tty supports VDISABLE
|
|
int vdisable = pathconf("/dev/tty", _PC_VDISABLE);
|
|
assert(vdisable == _POSIX_VDISABLE);
|
|
|
|
int termfd = open("/dev/tty", O_RDWR, O_NDELAY | O_NOCTTY);
|
|
if (termfd < 0) {
|
|
perror("open");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Currently set/default options
|
|
struct termios termios = {0};
|
|
if (tcgetattr(termfd, &termios) < 0) {
|
|
perror("tcgetattr");
|
|
close(termfd);
|
|
return EXIT_FAILURE;
|
|
}
|
|
struct termios term_restore = termios;
|
|
|
|
const cc_t verase = termios.c_cc[VERASE];
|
|
assert(verase != _POSIX_VDISABLE);
|
|
// Disable backspace key control char
|
|
termios.c_cc[VERASE] = _POSIX_VDISABLE;
|
|
|
|
if (tcsetattr(termfd, TCSANOW, &termios) < 0) {
|
|
perror("tcsetattr (setting VDISABLE)");
|
|
close(termfd);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Check that it was actually set
|
|
struct termios term_vdisable = {0};
|
|
if (tcgetattr(termfd, &term_vdisable) < 0) {
|
|
perror("tcgetattr (after setting VDISABLE)");
|
|
close(termfd);
|
|
return EXIT_FAILURE;
|
|
}
|
|
assert(term_vdisable.c_cc[VERASE] == _POSIX_VDISABLE);
|
|
|
|
// Restore old config
|
|
if (tcsetattr(termfd, TCSAFLUSH, &term_restore) < 0) {
|
|
perror("tcsetattr (restoring settings)");
|
|
close(termfd);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
close(termfd);
|
|
return EXIT_SUCCESS;
|
|
}
|