snark13
8e389c03f8
Реализовать двухпанельный Commander от платформенного PoC до этапов P6-P20: EMM-каталог, сортировку и выбор, операции с файлами и деревьями, транзакционное копирование, метаданные, политику конфликтов и предварительную проверку свободного места. Добавить проектную документацию, HDD/MAME-сценарии и проверенные артефакты. Расширить libc операцией bank_write_page, исправлением режима O_RDONLY и связанными регрессионными проверками.
122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*
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* p19_overwrite_probe.c — target-проверка backup/commit/rollback copy-job.
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*
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* UI-policy проверяется отдельно. Здесь ошибки подаются точно между
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* последним write и commit, чтобы доказать сохранность старого target.
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*/
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#include <stdint.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <conio.h>
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#include <sprinter_mem.h>
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#include "sc_copy.h"
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static ScCopyJob job;
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static int result_fd = -1;
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static uint8_t failures;
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static void log_text(const char *text)
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{
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const char *end = text;
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uint16_t length;
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cputs(text);
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while (*end != '\0') end++;
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length = (uint16_t)(end - text);
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if (result_fd >= 0) (void)write(result_fd, text, length);
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}
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static void check(uint8_t condition, const char *name)
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{
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log_text(condition ? "PASS " : "FAIL ");
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if (!condition) failures++;
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log_text(name);
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log_text("\r\n");
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}
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static int copy_file(const char *source_name, const char *target_name,
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uint32_t size, uint8_t page, uint8_t replace)
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{
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int step;
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if (sc_copy_begin_policy(&job, "D:\\SOURCE", "D:\\TARGET",
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source_name, target_name, size, page,
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replace) != 0) return SC_COPY_STEP_ERROR;
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do {
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step = sc_copy_step(&job);
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} while (step == SC_COPY_STEP_MORE);
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return step;
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}
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int main(void)
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{
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uint16_t total_before = 0u;
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uint16_t free_before = 0u;
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uint16_t total_after = 0u;
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uint16_t free_after = 0u;
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uint8_t block;
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uint8_t page;
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int step;
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textattr(0x07u);
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clrscr_attr(0x07u);
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cputs("P19 transactional overwrite\r\n\r\n");
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result_fd = open("D:\\RESULT.TXT", O_WRONLY | O_CREAT | O_TRUNC);
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mem_info(&total_before, &free_before);
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block = mem_alloc_pages(1u);
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if (block == 0u) return 1;
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page = mem_get_page(block, 0u);
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errno = 0;
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step = sc_copy_begin(&job, "D:\\SOURCE", "D:\\TARGET",
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"NORMAL.BIN", 4097ul, page);
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check(step != 0 && job.error == EEXIST,
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"default still refuses existing target");
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step = copy_file("NORMAL.BIN", "NORMAL.BIN", 4097ul, page, 1u);
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check(step == SC_COPY_STEP_DONE && job.committed,
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"overwrite commits through backup");
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step = copy_file("READONLY.BIN", "READONLY.BIN", 8193ul, page, 1u);
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check(step == SC_COPY_STEP_DONE && job.committed &&
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(job.existing_attr & 1u), "explicit readonly overwrite");
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step = copy_file("COLLIDE.BIN", "COLLIDE.BIN", 4096ul, page, 1u);
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check(step == SC_COPY_STEP_DONE && job.committed,
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"pre-existing backup name skipped");
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step = copy_file("ABSENT.BIN", "ABSENT.BIN", 17ul, page, 1u);
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check(step == SC_COPY_STEP_DONE && job.committed,
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"replace policy accepts vanished target");
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step = copy_file("ABSENT.BIN", "RENAMED.BIN", 17ul, page, 0u);
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check(step == SC_COPY_STEP_DONE && job.committed,
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"distinct destination name");
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step = sc_copy_begin_policy(&job, "D:\\SOURCE", "D:\\TARGET",
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"ROLLBACK.BIN", "ROLLBACK.BIN",
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4096ul, page, 1u);
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if (step == 0) step = sc_copy_step(&job);
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if (step == SC_COPY_STEP_MORE) {
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(void)close(job.temp_fd);
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job.temp_fd = -1;
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(void)unlink(job.temp_path);
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step = sc_copy_step(&job);
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}
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check(step == SC_COPY_STEP_ERROR && !job.committed,
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"rename failure rolls original target back");
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mem_free_block(block);
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mem_info(&total_after, &free_after);
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check(total_before == total_after && free_before == free_after,
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"EMM restored");
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if (failures == 0u) log_text("ALL PASS\r\n");
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if (result_fd >= 0) (void)close(result_fd);
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cputs("\r\nPress Enter to return to DSS.\r\n");
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while (kbhit()) (void)getkey();
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(void)getkey();
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return failures;
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}
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