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/* ISC license. */
#include <errno.h>
#include <skalibs/uint.h>
#include <skalibs/bytestr.h>
#include <skalibs/djbunix.h>
int s6rc_read_uint (char const *file, unsigned int *u)
{
char buf[UINT_FMT + 1] ;
register int r = openreadnclose(file, buf, UINT_FMT) ;
if (r < 0) return (errno == ENOENT) ? 0 : -1 ;
buf[byte_chr(buf, r, '\n')] = 0 ;
if (!uint0_scan(buf, u)) return (errno = EINVAL, -1) ;
return 1 ;
}
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