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.
106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "test_helpers.h"
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void print(struct passwd *pwd) {
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printf("pw_name: %s\n", pwd->pw_name);
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printf("pw_password: %s\n", pwd->pw_passwd);
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printf("pw_uid: %u\n", pwd->pw_uid);
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printf("pw_gid: %u\n", pwd->pw_gid);
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printf("pw_gecos: %s\n", pwd->pw_gecos);
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printf("pw_dir: %s\n", pwd->pw_dir);
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printf("pw_shell: %s\n", pwd->pw_shell);
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}
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int main(void) {
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puts("--- Checking getpwuid ---");
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errno = 0;
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struct passwd *pwd = getpwuid(0);
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if (errno != 0) {
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perror("getpwuid");
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exit(EXIT_FAILURE);
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}
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if (pwd != NULL) {
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print(pwd);
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}
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puts("--- Checking getpwnam ---");
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errno = 0;
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pwd = getpwnam("nobody");
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if (errno != 0) {
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perror("getpwnam");
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exit(EXIT_FAILURE);
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}
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if (pwd != NULL) {
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print(pwd);
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}
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puts("--- Checking getpwuid_r ---");
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struct passwd pwd2;
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struct passwd* result;
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char* buf = malloc(300);
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if (getpwuid_r(0, &pwd2, buf, 100, &result) < 0) {
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perror("getpwuid_r");
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free(buf);
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exit(EXIT_FAILURE);
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}
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if (result != NULL) {
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if (result != &pwd2) {
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free(buf);
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exit(EXIT_FAILURE);
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}
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print(&pwd2);
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}
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puts("--- Checking getpwnam_r ---");
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if (getpwnam_r("nobody", &pwd2, buf, 300, &result) < 0) {
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perror("getpwuid_r");
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free(buf);
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exit(EXIT_FAILURE);
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}
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if (result != NULL) {
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if (result != &pwd2) {
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free(buf);
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exit(EXIT_FAILURE);
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}
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print(&pwd2);
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}
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free(buf);
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puts("--- Checking getpwuid_r error handling ---");
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char buf2[1];
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if (getpwuid_r(0, &pwd2, buf2, 1, &result) == 0) {
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puts("This shouldn't have succeeded, but it did!");
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exit(EXIT_FAILURE);
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}
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if (errno != ERANGE) {
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perror("getpwuid_r");
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exit(EXIT_FAILURE);
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}
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puts("Returned ERANGE because the buffer was too small 👍");
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errno = 0;
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struct passwd *entry = NULL;
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for (int i = 1; (entry = getpwent()); ++i) {
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int backup = errno;
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printf("--- getpwent #%d ---\n", i);
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if (backup != 0) {
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errno = backup;
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perror("getpwent");
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exit(EXIT_FAILURE);
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}
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print(entry);
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}
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puts("--- getpwent #1 (rewind) ---");
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setpwent();
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entry = getpwent();
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perror("getpwent");
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print(entry);
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endpwent();
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}
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