Blame src/functional/fdopen.c

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#ifndef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#endif
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#include <errno.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 <unistd.h>
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#include "test.h"
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#define TEST(c) do { \
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	errno = 0; \
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	if (!(c)) \
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		t_error("%s failed (errno = %d)\n", #c, errno); \
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} while(0)
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int main(void)
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{
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	char tmp[] = "/tmp/testsuite-XXXXXX";
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	char foo[6];
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	int fd;
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	FILE *f;
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	TEST((fd = mkstemp(tmp)) > 2);
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	TEST(write(fd, "hello", 6)==6);
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	TEST(f = fdopen(fd, "rb"));
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	if (f) {
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		TEST(ftello(f)==6);
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		TEST(fseeko(f, 0, SEEK_SET)==0);
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		TEST(fgets(foo, sizeof foo, f));
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		if (strcmp(foo,"hello") != 0)
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			t_error("fgets read back: \"%s\"; wanted: \"hello\"\n", foo);
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		fclose(f);
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	}
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	if (fd > 2)
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		TEST(unlink(tmp) != -1);
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	return t_status;
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}