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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSPLICE
#include <sys/stat.h>
#include <fcntl.h>
#include <skalibs/djbunix.h>
#include <skalibs/iobuffer.h>
static int iobufferk_init_0 (iobufferk *k)
{
int fd = openc_write("/dev/null") ;
if (fd < 0) return 0 ;
k->p[0] = -1 ;
k->p[1] = fd ;
return 1 ;
}
static int iobufferk_nofd (iobufferk *k)
{
k->p[0] = k->p[1] = -1 ;
return 1 ;
}
static int iobufferk_init_3 (iobufferk *k)
{
return (pipecoe(k->p) >= 0) ;
}
static iobufferk_output_func_t_ref iobufferk_init_f[4] =
{
&iobufferk_init_0, &iobufferk_nofd, &iobufferk_nofd, &iobufferk_init_3
} ;
int iobufferk_init (iobufferk *k, int fdin, int fdout)
{
iobufferk tmp ;
struct stat st ;
int r ;
if (fstat(fdin, &st) < 0) return 0 ;
r = fcntl(fdin, F_GETFL) ;
if (r < 0) return 0 ;
tmp.type = !S_ISFIFO(st.st_mode) ;
tmp.nb = !!(r & O_NONBLOCK) ;
if (fstat(fdout, &st) < 0) return 0 ;
r = fcntl(fdout, F_GETFL) ;
if (r < 0) return 0 ;
tmp.type |= (!S_ISFIFO(st.st_mode) << 1) ;
tmp.nb |= (r & O_NONBLOCK) ? 2 : 0 ;
tmp.fd[0] = fdin ;
tmp.fd[1] = fdout ;
tmp.n = 0 ;
if (!(*iobufferk_init_f[tmp.type])(&tmp)) return 0 ;
*k = tmp ;
return 1 ;
}
#else
#include <errno.h>
#include <skalibs/iobuffer.h>
int iobufferk_init (iobufferk *k, int fdin, int fdout)
{
(void)k ;
(void)fdin ;
(void)fdout ;
return (errno = ENOSYS, 0) ;
}
#endif
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