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.
47 lines
945 B
C
47 lines
945 B
C
#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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int handler_called = 0;
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void sig_handler(int signo)
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{
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(void) signo;
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printf("SIGURG called. Inside handler\n");
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handler_called = 1;
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}
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int sigset_test(int signum)
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{
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struct sigaction act;
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act.sa_handler = sig_handler;
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act.sa_flags = 0;
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sigemptyset(&act.sa_mask);
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if (sigaction(signum, &act, 0) != 0) {
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perror("Unexpected error while using sigaction()");
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exit(EXIT_FAILURE);
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}
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if (sigset(signum,SIG_DFL) != sig_handler) {
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perror("Unexpected error while using signal()");
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exit(EXIT_FAILURE);
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}
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raise(signum);
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if (handler_called == 1) {
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printf("Test FAILED: handler was called even though default was expected\n");
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exit(EXIT_FAILURE);
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}
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printf("test passed, the signal was ignored\n");
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return EXIT_SUCCESS;
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}
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int main(){
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sigset_test(SIGURG);
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return EXIT_SUCCESS;
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}
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