mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
82 lines
3 KiB
C
82 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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/*
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* This test was contributed by @ahgamut
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* https://github.com/jart/cosmopolitan/issues/61#issuecomment-792214575
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*/
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char path[PATH_MAX];
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void teardown(void) {
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unlink(path);
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}
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int setup(void) {
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int fd;
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const char* tmpdir;
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if ((tmpdir = getenv("TMPDIR")))
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strlcpy(path, tmpdir, sizeof(path));
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else
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strlcpy(path, "/tmp", sizeof(path));
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strlcat(path, "/freopen_test.XXXXXX", sizeof(path));
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if ((fd = mkstemp(path)) == -1)
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return 1;
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if (write(fd, "cosmopolitan libc\n", 18) != 18)
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return 2;
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if (close(fd))
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return 3;
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return 0;
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}
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int test(void) {
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FILE* fp;
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char buf[20];
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if (!(fp = fopen(path, "r")))
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return 4;
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if (fgetc(fp) != 'c')
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return 5;
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if (!(fp = freopen(path, "rb", fp)))
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return 6;
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if (fread(buf, 1, 20, fp) != 18)
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return 7;
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if (memcmp(buf, "cosmopolitan libc\n", 18))
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return 8;
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if (fclose(fp))
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return 9;
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return 0;
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}
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int main(int argc, char* argv[]) {
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int rc;
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if ((rc = setup())) {
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perror(path);
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teardown();
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return rc;
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}
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rc = test();
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teardown();
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return rc;
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}
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