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.
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "signals_list.h"
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#include "../test_helpers.h"
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// The resulting set shall be the union of the current set and the signal
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// set pointed to by set, if the value of the argument how is SIG_BLOCK.
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volatile sig_atomic_t 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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handler_called = 1;
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}
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int sigprocmask_block(int signum)
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{
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int defaultsig = SIGALRM;
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if (signum == SIGALRM) {
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defaultsig = SIGHUP;
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}
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struct sigaction act;
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sigset_t set1, set2, pending_set;
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sigemptyset(&set1);
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sigemptyset(&set2);
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sigaddset(&set1, defaultsig);
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sigaddset(&set2, signum);
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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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int status;
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status = sigaction(signum, &act, 0);
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ERROR_IF(sigaction, status, == -1);
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status = sigaction(defaultsig, &act, 0);
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ERROR_IF(sigaction, status, == -1);
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status = sigprocmask(SIG_SETMASK, &set1, NULL);
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ERROR_IF(sigprocmask, status, == -1);
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status = sigprocmask(SIG_UNBLOCK, &set2, NULL);
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ERROR_IF(sigprocmask, status, == -1);
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printf("Raising %s\n", strsignal(signum));
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status = raise(signum);
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ERROR_IF(raise, status, == -1);
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ERROR_IF(raise, handler_called, != 1);
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handler_called = 0;
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printf("Raising %s\n", strsignal(defaultsig));
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status = raise(defaultsig);
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ERROR_IF(raise, defaultsig, == -1);
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ERROR_IF(raise, handler_called, == 1);
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status = sigpending(&pending_set);
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ERROR_IF(sigpending, status, == -1);
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status = sigismember(&pending_set, defaultsig);
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ERROR_IF(sigismember, status, != 1);
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status = sigismember(&pending_set, signum);
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ERROR_IF(sigismemeber, status, != 0);
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// printf("Test PASSED: signal was added to the process's signal mask\n");
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act.sa_handler = SIG_IGN;
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sigaction(signum, &act, 0);
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sigaction(defaultsig, &act, 0);
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return EXIT_SUCCESS;
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}
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int main(){
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for (int i=1; i<N_SIGNALS; i++){
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if (i == SIGKILL || i == SIGSTOP){
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continue;
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}
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printf("Testing signal %s (%d)\n", strsignal(i), i);
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sigprocmask_block(i);
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}
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return 0;
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}
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