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Annotation of libelwix/inc/elwix/apio.h, revision 1.5

1.2       misho       1: /*************************************************************************
                      2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
                      3: *  by Michael Pounov <misho@elwix.org>
                      4: *
                      5: * $Author: misho $
1.5     ! misho       6: * $Id: apio.h,v 1.4.52.1 2020/06/19 13:05:11 misho Exp $
1.2       misho       7: *
                      8: **************************************************************************
                      9: The ELWIX and AITNET software is distributed under the following
                     10: terms:
                     11: 
                     12: All of the documentation and software included in the ELWIX and AITNET
                     13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
                     14: 
1.5     ! misho      15: Copyright 2004 - 2020
1.2       misho      16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
                     17: 
                     18: Redistribution and use in source and binary forms, with or without
                     19: modification, are permitted provided that the following conditions
                     20: are met:
                     21: 1. Redistributions of source code must retain the above copyright
                     22:    notice, this list of conditions and the following disclaimer.
                     23: 2. Redistributions in binary form must reproduce the above copyright
                     24:    notice, this list of conditions and the following disclaimer in the
                     25:    documentation and/or other materials provided with the distribution.
                     26: 3. All advertising materials mentioning features or use of this software
                     27:    must display the following acknowledgement:
                     28: This product includes software developed by Michael Pounov <misho@elwix.org>
                     29: ELWIX - Embedded LightWeight unIX and its contributors.
                     30: 4. Neither the name of AITNET nor the names of its contributors
                     31:    may be used to endorse or promote products derived from this software
                     32:    without specific prior written permission.
                     33: 
                     34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
                     35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     44: SUCH DAMAGE.
                     45: */
                     46: #ifndef __APIO_H
                     47: #define __APIO_H
                     48: 
                     49: 
                     50: struct tagPIOPID {
                     51:        union {
                     52:                FILE            *fp;
                     53:                int             fd;
                     54:        } f;
                     55:        pid_t                   pid;
                     56:        int                     stat;
                     57: 
                     58:        SLIST_ENTRY(tagPIOPID)  next;
                     59: };
                     60: typedef SLIST_HEAD(, tagPIOPID) pio_pid_t;
                     61: 
                     62: 
                     63: extern pio_pid_t pio_pidlist;
                     64: 
                     65: 
                     66: /*
                     67:  * e_popen() - ELWIX replacement of standard popen
                     68:  *
                     69:  * @command = command
                     70:  * @type = type
                     71:  * @ppid = return pid of child program
                     72:  * return: NULL error or !=NULL open program
                     73:  */
                     74: #ifdef POPEN_STREAM
                     75: FILE *e_popen(const char *command, const char *type, pid_t *ppid);
                     76: #else
                     77: int e_popen(const char *command, const char *type, pid_t *ppid);
1.5     ! misho      78: #endif
        !            79: /*
        !            80:  * e_popen2() - ELWIX replacement of standard popen with post close of chosen handles
        !            81:  *
        !            82:  * @command = command
        !            83:  * @type = type
        !            84:  * @ppid = return pid of child program
        !            85:  * @fds = file descriptor array for close when fork
        !            86:  * @fdslen = fds number of descriptors
        !            87:  * return: NULL error or !=NULL open program
        !            88:  */
        !            89: #ifdef POPEN_STREAM
        !            90: FILE *e_popen2(const char *command, const char *type, pid_t *ppid, int *fds, size_t fdslen);
        !            91: #else
        !            92: int e_popen2(const char *command, const char *type, pid_t *ppid, int *fds, size_t fdslen);
1.2       misho      93: #endif
                     94: /*
                     95:  * e_pclose() - ELWIX replacement of standard pclose
                     96:  *
                     97:  * @iop = popen handle
                     98:  * return: -1 error or !=-1 pid status
                     99:  */
                    100: #ifdef POPEN_STREAM
                    101: int e_pclose(FILE *iop);
                    102: #else
                    103: int e_pclose(int iop);
                    104: #endif
                    105: 
                    106: /*
                    107:  * pio_pgetpid() - Get tagPIOPID structure from file handle
                    108:  *
                    109:  * @iop = popen handle
                    110:  * return: NULL error or !=NULL tagPIOPID structure
                    111:  */
                    112: #ifdef POPEN_STREAM
                    113: struct tagPIOPID *pio_pgetpid(FILE *iop);
                    114: #else
                    115: struct tagPIOPID *pio_pgetpid(int iop);
                    116: #endif
                    117: /*
                    118:  * pio_pchkpid() - Check exit status of child programs
                    119:  *
                    120:  * @pids = return tagPIOPID structures of exited programs, 
                    121:  *             if !=NULL must call array_Destroy()
                    122:  * return: -1 error or >-1 exited programs
                    123:  */
                    124: int pio_pchkpid(array_t ** __restrict pids);
                    125: 
                    126: 
                    127: #endif