minix/lib/libc/gen/posix_spawn_fileactions.c
Lionel Sambuc f14fb60209 Libraries updates and cleanup
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

166 lines
3.7 KiB
C

/*-
* Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: posix_spawn_fileactions.c,v 1.2 2012/04/08 11:27:44 martin Exp $");
#include "namespace.h"
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <spawn.h>
#define MIN_SIZE 16
/*
* File descriptor actions
*/
int
posix_spawn_file_actions_init(posix_spawn_file_actions_t *fa)
{
if (fa == NULL)
return (-1);
fa->fae = malloc(MIN_SIZE * sizeof(struct posix_spawn_file_actions_entry));
if (fa->fae == NULL)
return (-1);
fa->size = MIN_SIZE;
fa->len = 0;
return (0);
}
int
posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *fa)
{
unsigned int i;
if (fa == NULL)
return (-1);
for (i = 0; i < fa->len; i++) {
if (fa->fae[i].fae_action == FAE_OPEN)
free(fa->fae[i].fae_path);
}
free(fa->fae);
return (0);
}
static int
posix_spawn_file_actions_getentry(posix_spawn_file_actions_t *fa)
{
if (fa == NULL)
return -1;
if (fa->len < fa->size)
return fa->len;
fa->fae = realloc(fa->fae, (fa->size + MIN_SIZE) *
sizeof(struct posix_spawn_file_actions_entry));
if (fa->fae == NULL)
return -1;
fa->size += MIN_SIZE;
return fa->len;
}
int
posix_spawn_file_actions_addopen(posix_spawn_file_actions_t * __restrict fa,
int fildes, const char * __restrict path, int oflag, mode_t mode)
{
int i, error;
if (fildes < 0)
return (EBADF);
i = posix_spawn_file_actions_getentry(fa);
if (i < 0)
return (ENOMEM);
fa->fae[i].fae_action = FAE_OPEN;
fa->fae[i].fae_path = strdup(path);
if (fa->fae[i].fae_path == NULL) {
error = errno;
return (error);
}
fa->fae[i].fae_fildes = fildes;
fa->fae[i].fae_oflag = oflag;
fa->fae[i].fae_mode = mode;
fa->len++;
return (0);
}
int
posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa,
int fildes, int newfildes)
{
int i;
if (fildes < 0 || newfildes < 0)
return (EBADF);
i = posix_spawn_file_actions_getentry(fa);
if (i < 0)
return (ENOMEM);
fa->fae[i].fae_action = FAE_DUP2;
fa->fae[i].fae_fildes = fildes;
fa->fae[i].fae_newfildes = newfildes;
fa->len++;
return (0);
}
int
posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *fa,
int fildes)
{
int i;
if (fildes < 0)
return (EBADF);
i = posix_spawn_file_actions_getentry(fa);
if (i < 0)
return (ENOMEM);
fa->fae[i].fae_action = FAE_CLOSE;
fa->fae[i].fae_fildes = fildes;
fa->len++;
return (0);
}