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/*
* test_mkfds - make various file descriptors
*
* Written by Masatake YAMATO <yamato@redhat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef TEST_MKFDS_H
#define TEST_MKFDS_H
#include <asm/unistd.h>
#include <stdbool.h>
#include <stddef.h>
enum multiplexing_mode {
MX_READ = 1 << 0,
MX_WRITE = 1 << 1,
MX_EXCEPT = 1 << 2,
};
struct fdesc {
int fd;
void (*close)(int, void *);
unsigned int mx_modes;
void *data;
};
#define DEFUN_WAIT_EVENT_POLL(NAME,SYSCALL,XDECLS,SETUP_SIG_HANDLER,SYSCALL_INVOCATION) \
void wait_event_##NAME(bool add_stdin, struct fdesc *fdescs, size_t n_fdescs) \
{ \
int n = add_stdin? 1: 0; \
int n0 = 0; \
struct pollfd *pfds = NULL; \
\
XDECLS \
\
for (size_t i = 0; i < n_fdescs; i++) \
if (fdescs[i].mx_modes) \
n++; \
\
pfds = xcalloc(n, sizeof(pfds[0])); \
\
for (size_t i = 0; i < n_fdescs; i++) { \
if (!fdescs[i].mx_modes) \
continue; \
pfds[n0].fd = fdescs[i].fd; \
if (fdescs[i].mx_modes & MX_READ) \
pfds[n0].events |= POLLIN; \
if (fdescs[i].mx_modes & MX_WRITE) \
pfds[n0].events |= POLLOUT; \
if (fdescs[i].mx_modes & MX_EXCEPT) \
pfds[n0].events |= POLLHUP; \
n0++; \
} \
\
if (add_stdin) { \
pfds[n0].fd = 0; \
pfds[n0].events |= POLLIN; \
} \
\
SETUP_SIG_HANDLER \
\
if (SYSCALL_INVOCATION < 0 \
&& errno != EINTR) \
err(EXIT_FAILURE, "failed in " SYSCALL); \
free(pfds); \
}
#ifdef __NR_ppoll
void wait_event_ppoll(bool add_stdin, struct fdesc *fdescs, size_t n_fdescs);
#endif
#endif /* TEST_MKFDS_H */
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