--- libelwix/src/pio.c 2013/12/05 15:38:14 1.1.2.4 +++ libelwix/src/pio.c 2015/06/25 17:53:50 1.4 @@ -1,3 +1,48 @@ +/************************************************************************* +* (C) 2013 AITNET ltd - Sofia/Bulgaria - +* by Michael Pounov +* +* $Author: misho $ +* $Id: pio.c,v 1.4 2015/06/25 17:53:50 misho Exp $ +* +************************************************************************** +The ELWIX and AITNET software is distributed under the following +terms: + +All of the documentation and software included in the ELWIX and AITNET +Releases is copyrighted by ELWIX - Sofia/Bulgaria + +Copyright 2004 - 2015 + by Michael Pounov . 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. +3. All advertising materials mentioning features or use of this software + must display the following acknowledgement: +This product includes software developed by Michael Pounov +ELWIX - Embedded LightWeight unIX and its contributors. +4. Neither the name of AITNET nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY AITNET 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 REGENTS 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 "global.h" @@ -18,16 +63,23 @@ static pthread_mutex_t pidlist_mutex = PTHREAD_MUTEX_I * @ppid = return pid of child program * return: NULL error or !=NULL open program */ +#ifdef POPEN_STREAM FILE * +#else +int +#endif e_popen(const char *command, const char *type, pid_t *ppid) { struct tagPIOPID *cur, *p; - FILE *iop; int pdes[2], pid, twoway, cloexec; char *argv[4]; if (!command || !type) +#ifdef POPEN_STREAM return NULL; +#else + return -1; +#endif cloexec = strchr(type, 'e') != NULL; /* @@ -37,34 +89,54 @@ e_popen(const char *command, const char *type, pid_t * if (strchr(type, '+')) { twoway = 1; type = "r+"; - } else { + } else { twoway = 0; - if ((*type != 'r' && *type != 'w') || - (type[1] && (type[1] != 'e' || type[2]))) - return (NULL); + if ((*type != 'r' && *type != 'w') || + (type[1] && (type[1] != 'e' || type[2]))) +#ifdef POPEN_STREAM + return NULL; +#else + return -1; +#endif } - if ((cloexec ? pipe2(pdes, O_CLOEXEC) : pipe(pdes)) < 0) - return (NULL); + if (socketpair(AF_UNIX, SOCK_STREAM | (cloexec ? O_CLOEXEC : 0), + 0, pdes) < 0) { + LOGERR; +#ifdef POPEN_STREAM + return NULL; +#else + return -1; +#endif + } if (!(cur = e_malloc(sizeof(struct tagPIOPID)))) { close(pdes[0]); close(pdes[1]); - return (NULL); +#ifdef POPEN_STREAM + return NULL; +#else + return -1; +#endif } argv[0] = "sh"; argv[1] = "-c"; - argv[2] = (char *)command; + argv[2] = (char *) command; argv[3] = NULL; THREAD_LOCK(); switch (pid = vfork()) { case -1: /* Error. */ + LOGERR; THREAD_UNLOCK(); close(pdes[0]); close(pdes[1]); e_free(cur); - return (NULL); +#ifdef POPEN_STREAM + return NULL; +#else + return -1; +#endif /* NOTREACHED */ case 0: /* Child. */ if (*type == 'r') { @@ -101,7 +173,11 @@ e_popen(const char *command, const char *type, pid_t * close(pdes[1]); } SLIST_FOREACH(p, &pio_pidlist, next) - close(fileno(p->fp)); +#ifdef POPEN_STREAM + close(fileno(p->f.fp)); +#else + close(p->f.fd); +#endif execve(_PATH_BSHELL, argv, environ); _exit(127); /* NOTREACHED */ @@ -113,21 +189,32 @@ e_popen(const char *command, const char *type, pid_t * /* Parent; assume fdopen can't fail. */ if (*type == 'r') { - iop = fdopen(pdes[0], type); +#ifdef POPEN_STREAM + cur->f.fp = fdopen(pdes[0], type); +#else + cur->f.fd = pdes[0]; +#endif close(pdes[1]); } else { - iop = fdopen(pdes[1], type); +#ifdef POPEN_STREAM + cur->f.fp = fdopen(pdes[1], type); +#else + cur->f.fd = pdes[1]; +#endif close(pdes[0]); } /* Link into list of file descriptors. */ - cur->fp = iop; cur->pid = pid; THREAD_LOCK(); SLIST_INSERT_HEAD(&pio_pidlist, cur, next); THREAD_UNLOCK(); - return (iop); +#ifdef POPEN_STREAM + return cur->f.fp; +#else + return cur->f.fd; +#endif } /* @@ -137,7 +224,11 @@ e_popen(const char *command, const char *type, pid_t * * return: -1 error or !=-1 pid status */ int +#ifdef POPEN_STREAM e_pclose(FILE *iop) +#else +e_pclose(int iop) +#endif { struct tagPIOPID *cur, *last = NULL; int pstat; @@ -151,7 +242,11 @@ e_pclose(FILE *iop) */ THREAD_LOCK(); SLIST_FOREACH(cur, &pio_pidlist, next) { - if (cur->fp == iop) +#ifdef POPEN_STREAM + if (cur->f.fp == iop) +#else + if (cur->f.fd == iop) +#endif break; last = cur; } @@ -165,7 +260,11 @@ e_pclose(FILE *iop) SLIST_REMOVE_AFTER(last, next); THREAD_UNLOCK(); +#ifdef POPEN_STREAM fclose(iop); +#else + close(iop); +#endif do { pid = wait4(cur->pid, &pstat, 0, NULL); @@ -183,7 +282,11 @@ e_pclose(FILE *iop) * return: NULL error or !=NULL tagPIOPID structure */ struct tagPIOPID * -pio_pgetpid(FILE * __restrict iop) +#ifdef POPEN_STREAM +pio_pgetpid(FILE *iop) +#else +pio_pgetpid(int iop) +#endif { struct tagPIOPID *p; @@ -192,7 +295,11 @@ pio_pgetpid(FILE * __restrict iop) THREAD_LOCK(); SLIST_FOREACH(p, &pio_pidlist, next) - if (p->fp == iop) +#ifdef POPEN_STREAM + if (p->f.fp == iop) +#else + if (p->f.fd == iop) +#endif break; THREAD_UNLOCK(); @@ -211,7 +318,7 @@ pio_pchkpid(array_t ** __restrict pids) { register int ret = 0; struct tagPIOPID *p; - array_t *pa; + array_t *pa = NULL; if (pids) { if (!(pa = array_Init(0))) @@ -222,7 +329,11 @@ pio_pchkpid(array_t ** __restrict pids) THREAD_LOCK(); SLIST_FOREACH(p, &pio_pidlist, next) - if (p->fp && waitpid(p->pid, &p->stat, WNOHANG) > 0) { +#ifdef POPEN_STREAM + if (p->f.fp && waitpid(p->pid, &p->stat, WNOHANG) > 0) { +#else + if (p->f.fd && waitpid(p->pid, &p->stat, WNOHANG) > 0) { +#endif if (pids) array_Push(pa, p, 0); ret++;