mirror of
https://github.com/fluencelabs/musl
synced 2025-05-21 11:41:29 +00:00
eb0e8fa0b1
don't waste time (and significant code size due to function call overhead!) setting errno when the result of a syscall does not matter or when it can't fail.
28 lines
449 B
C
28 lines
449 B
C
#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "stdio_impl.h"
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#define MAXTRIES 100
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FILE *tmpfile(void)
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{
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char buf[L_tmpnam], *s;
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int fd;
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FILE *f;
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int try;
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for (try=0; try<MAXTRIES; try++) {
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s = tmpnam(buf);
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if (!s) return 0;
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fd = syscall(SYS_open, s, O_RDWR|O_CREAT|O_EXCL|O_LARGEFILE, 0600);
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if (fd >= 0) {
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f = __fdopen(fd, "w+");
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__syscall(SYS_unlink, s);
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return f;
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}
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}
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return 0;
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}
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LFS64(tmpfile);
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