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.
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
#include <stdio.h>
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#include <assert.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "test_helpers.h"
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int main(void) {
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// Spawn three childrens, one with same pgid and two with pgid set to its own
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// pid, so the exit order is two different pgid, then followed with same pgid
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pid_t pid_samepgid = fork();
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ERROR_IF(fork, pid_samepgid, == -1);
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if (pid_samepgid == 0) {
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// child
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usleep(300000);
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_Exit(2);
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}
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pid_t pid_diffpgids[2];
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for (int i = 0; i < 2; i++) {
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pid_diffpgids[i] = fork();
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ERROR_IF(fork, pid_diffpgids[i], == -1);
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if (pid_diffpgids[i] == 0) {
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int ret = setpgid(0, 0);
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ERROR_IF(setpgid, ret, == -1);
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// child
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usleep((i + 1) * 100000);
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_Exit(i);
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}
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}
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int status;
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pid_t wid;
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// First, check that the first different-pgid proc is recognized.
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wid = waitpid(-1, &status, 0);
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ERROR_IF(waitpid, wid, == -1);
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assert(wid == pid_diffpgids[0]);
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assert(WIFEXITED(status));
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assert(WEXITSTATUS(status) == 0);
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// Then, check that the longest-waiting proc with the same pgid is properly matched.
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wid = waitpid(0, &status, 0);
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ERROR_IF(waitpid, wid, == -1);
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assert(wid == pid_samepgid);
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assert(WIFEXITED(status));
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assert(WEXITSTATUS(status) == 2);
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// Finally, the last different-pgid must have completed.
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wid = waitpid(-1, &status, WNOHANG);
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ERROR_IF(waitpid, wid, == -1);
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assert(wid == pid_diffpgids[1]);
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assert(WIFEXITED(status));
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assert(WEXITSTATUS(status) == 1);
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}
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