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/* ISC license. */
#include <unistd.h>
#include <errno.h>
#include <skalibs/sgetopt.h>
#include <skalibs/types.h>
#include <skalibs/strerr.h>
#include <skalibs/exec.h>
#define USAGE "s6-nice [ -I | -i ] [ -n value ] prog..."
int main (int argc, char const *const *argv)
{
int incr = 10 ;
int strict = 0 ;
PROG = "s6-nice" ;
{
subgetopt l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "Iin:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'I' : strict = 0 ; break ;
case 'i' : strict = 1 ; break ;
case 'n': if (!int_scan(l.arg, &incr)) strerr_dieusage(100, USAGE) ; break ;
default : strerr_dieusage(100, USAGE) ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (!argc) strerr_dieusage(100, USAGE) ;
errno = 0 ;
if ((nice(incr) < 0) && errno)
{
char fmt[1+UINT_FMT] ;
fmt[int_fmt(fmt, incr)] = 0 ;
if (strict) strerr_diefu2sys(111, "nice to ", fmt) ;
else strerr_warnwu2sys("nice to ", fmt) ;
}
xexec(argv) ;
}
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