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.
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#include <err.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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// does not compile with glibc
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#ifndef __GLIBC__
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__attribute__((nonnull(2)))
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static void vwarn_test(int code, const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vwarnc(code, fmt, ap);
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va_end(ap);
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}
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static void log_to_stdout(void) {
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err_set_file(stdout);
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warnc(ENOENT, "Dang it, Bobby.");
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err_set_file(NULL);
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}
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void user_callback(int code) {
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printf("Exiting due to error code: %d\n", code);
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}
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int main(void) {
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err_set_exit(user_callback);
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// Set errno to a known value for verifiable messages
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// (Also, "Owner died" is just too funny not to use)
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errno = EOWNERDEAD;
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warn("Ran out of coffee");
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warnx("%s pulled out your ethernet cable", "Cat");
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warnc(EACCES, "Eat %d cookies", 42);
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vwarn_test(EBADE, "Potato, %s", "krumpli");
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// Set the sink to stdout then back to stderr
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log_to_stdout();
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warnc(EPERM,
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"I'm sorry, Dave. I'm afraid I can't do that."
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);
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// As long as one err function works they should all work since
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// two functions handle everything internally.
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errc(EXIT_SUCCESS, EUSERS, "Bye. It's crowded.");
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// Unreachable
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puts("err did not exit");
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return EXIT_FAILURE;
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}
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#else
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int main(void) {
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exit(0);
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}
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#endif
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