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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSPLICE
#include <skalibs/nonposix.h>
#include <fcntl.h>
#include <errno.h>
#include <skalibs/iobuffer.h>
static int iobufferk_flush_0 (iobufferk *k)
{
while (k->n)
{
ssize_t r = splice(k->fd[0], 0, k->p[1], 0, k->n, 0) ;
if (r < 0) return 0 ;
else if (!r) break ;
k->n -= r ;
}
return 1 ;
}
static int fakeflush (iobufferk *k)
{
k->n = 0 ;
return 1 ;
}
static int iobufferk_flush_3 (iobufferk *k)
{
while (k->n)
{
ssize_t r = splice(k->p[0], 0, k->fd[1], 0, k->n, SPLICE_F_MORE | (k->nb & 2 ? SPLICE_F_NONBLOCK : 0)) ;
if (r < 0)
{
if (errno == EINVAL) errno = ENOSYS ;
return 0 ;
}
else if (!r) return (errno = EPIPE, 0) ;
k->n -= r ;
}
return 1 ;
}
iobufferk_output_func_ref const iobufferk_flush_f[4] =
{
&iobufferk_flush_0, &fakeflush, &fakeflush, &iobufferk_flush_3
} ;
#else
#include <errno.h>
#include <skalibs/iobuffer.h>
static int iobufferk_onosys (iobufferk *k)
{
(void)k ;
return (errno = ENOSYS, -1) ;
}
iobufferk_output_func_ref const iobufferk_flush_f[4] =
{
&iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys
} ;
#endif
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