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lvm2/lib/misc/lvm-string.h

36 lines
691 B
C

/*
* Copyright (C) 2001 Sistina Software (UK) Limited.
*
* This file is released under the LGPL.
*/
#ifndef _LVM_STRING_H
#define _LVM_STRING_H
#include <stdarg.h>
/*
* On error, up to glibc 2.0.6, snprintf returned -1 if buffer was too small;
* From glibc 2.1 it returns number of chars (excl. trailing null) that would
* have been written had there been room.
*
* lvm_snprintf reverts to the old behaviour.
*/
static inline int lvm_snprintf(char *buf, size_t bufsize,
const char *format, ...)
{
int n;
va_list ap;
va_start(ap, format);
n = vsnprintf(buf, bufsize, format, ap);
va_end(ap);
if (n < 0 || (n > bufsize - 1))
return -1;
return n;
}
#endif