mirror of
https://codeberg.org/libreboot/lbmk.git
synced 2026-07-11 14:02:52 +02:00
Leah Rowe
0f1a22174f
i now use a singleton hook function per program: nvmutil, mkhtemp and lottery call this at the startup of your program: (void) errhook(exit_cleanup); then provide that function. make it static, so that each program has its own version. if you're writing a program that handles lots of files for example, and you want to do certain cleanup on exit (including error exit), this can be quite useful. Signed-off-by: Leah Rowe <leah@libreboot.org>
87 lines
1.4 KiB
C
87 lines
1.4 KiB
C
/* SPDX-License-Identifier: MIT ( >:3 )
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* Copyright (c) 2026 Leah Rowe <leah@libreboot.org> /| |\
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Something something non-determinism / \ */
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#include <ctype.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include "include/common.h"
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static void
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exit_cleanup(void);
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static void
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spew_buf(const void *data, size_t len);
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int
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main(int argc, char **argv)
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{
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int same = 0;
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char *buf;
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(void) argc, (void) argv;
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xpledgex("stdio", NULL);
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(void) errhook(exit_cleanup);
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buf = mkrbuf(BUFSIZ + 1);
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if (!memcmp(buf, buf + (BUFSIZ >> 1), BUFSIZ >> 1))
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same = 1;
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if (argc < 2) /* no spew */
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spew_buf(buf, BUFSIZ);
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free(buf);
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fprintf(stderr, "\n%s\n", same ? "You win!" : "You lose!");
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return same ^ 1;
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}
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static void
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spew_buf(const void *data, size_t len)
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{
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const unsigned char *buf = data;
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unsigned char c;
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size_t i, j;
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if (buf == NULL ||
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len == 0)
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return;
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for (i = 0; i < len; i += 16) {
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printf("%08zx ", i);
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for (j = 0; j < 16; j++) {
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if (i + j < len)
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printf("%02x ", buf[i + j]);
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else
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printf(" ");
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if (j == 7)
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printf(" ");
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}
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printf(" |");
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for (j = 0; j < 16 && i + j < len; j++) {
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c = buf[i + j];
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printf("%c", isprint(c) ? c : '.');
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}
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printf("|\n");
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}
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printf("%08zx\n", len);
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}
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static void
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exit_cleanup(void)
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{
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return;
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}
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