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.
48 lines
953 B
C
48 lines
953 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include "test_helpers.h"
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FILE *f;
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void* thread_wontlock(void* arg) {
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(void)arg;
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int result = ftrylockfile(f);
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UNEXP_IF(ftrylockfile, result, == 0);
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return NULL;
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}
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void* thread_willlock(void* arg) {
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(void)arg;
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int result = ftrylockfile(f);
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UNEXP_IF(ftrylockfile, result, != 0);
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return NULL;
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}
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int main(void) {
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f = fopen("stdio/stdio.in", "r");
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ERROR_IF(fopen, f, == NULL);
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flockfile(f);
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flockfile(f);
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thread_willlock(NULL);
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pthread_t thread;
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for (int i = 1; i <= 3; i++) {
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pthread_create(&thread, NULL, thread_wontlock, NULL);
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pthread_join(thread, NULL);
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funlockfile(f);
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}
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pthread_create(&thread, NULL, thread_willlock, NULL);
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pthread_join(thread, NULL);
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// TODO: glibc refuses to quit test without this
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// but in relibc, it will result in EPERM
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// funlockfile(f);
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}
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