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/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include "_stdio.h"
libc_hidden_proto(fprintf)
libc_hidden_proto(__glibc_strerror_r)
#ifdef __UCLIBC_MJN3_ONLY__
#warning CONSIDER: Increase buffer size for error message (non-%m case)?
#endif
libc_hidden_proto(perror)
void perror(register const char *s)
{
/* If the program is calling perror, it's a safe bet that printf and
* friends are used as well. It is also possible that the calling
* program could buffer stderr, or reassign it. */
register const char *sep;
sep = ": ";
if (!(s && *s)) { /* Caller did not supply a prefix message */
s = (sep += 2); /* or passed an empty string. */
}
#ifdef __UCLIBC_HAS_PRINTF_M_SPEC__
fprintf(stderr, "%s%s%m\n", s, sep); /* Use the gnu %m feature. */
#else
{
char buf[64];
fprintf(stderr, "%s%s%s\n", s, sep,
__glibc_strerror_r(errno, buf, sizeof(buf)));
}
#endif
}
libc_hidden_def(perror)
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