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.
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "test_helpers.h"
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#define BUFFER_SIZE 4096
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#ifndef __GLIBC__
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void read_and_print_directory(int fd) {
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char buffer[BUFFER_SIZE];
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long nread;
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long bpos;
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struct posix_dent *d;
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for (;;) {
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nread = posix_getdents(fd, buffer, BUFFER_SIZE, 0);
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ERROR_IF(posix_getdents, nread, == -1);
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UNEXP_IF(posix_getdents, nread, < 0);
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if (nread == 0) {
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break;
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}
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for (bpos = 0; bpos < nread;) {
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d = (struct posix_dent *) (buffer + bpos);
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printf(" ino = %-10lu name = %s\n", (unsigned long)d->d_ino, d->d_name);
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bpos += d->d_reclen;
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}
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}
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}
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int main(void) {
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int fd = open("example_dir/", O_RDONLY | O_DIRECTORY);
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ERROR_IF(open, fd, == -1);
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read_and_print_directory(fd);
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off_t seek_result = lseek(fd, 0, SEEK_SET);
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ERROR_IF(lseek, seek_result, == -1);
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read_and_print_directory(fd);
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close(fd);
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}
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#else
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int main(void) {
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// glibc doesn't support posix_getdents & O_DIRECTORY
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}
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#endif
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