version 1.1.2.3, 2013/12/05 15:13:58
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version 1.9, 2024/10/10 23:55:49
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/************************************************************************* |
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* (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org> |
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* by Michael Pounov <misho@elwix.org> |
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* |
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* $Author$ |
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* $Id$ |
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* |
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************************************************************************** |
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The ELWIX and AITNET software is distributed under the following |
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terms: |
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All of the documentation and software included in the ELWIX and AITNET |
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Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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Copyright 2004 - 2024 |
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by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions |
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are met: |
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1. Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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2. Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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3. All advertising materials mentioning features or use of this software |
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must display the following acknowledgement: |
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This product includes software developed by Michael Pounov <misho@elwix.org> |
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ELWIX - Embedded LightWeight unIX and its contributors. |
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4. Neither the name of AITNET nor the names of its contributors |
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may be used to endorse or promote products derived from this software |
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without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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SUCH DAMAGE. |
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*/ |
#include "global.h" |
#include "global.h" |
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#ifdef __linux__ |
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#define __USE_GNU |
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#ifndef O_CLOEXEC |
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#define O_CLOEXEC 02000000 |
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#endif |
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#endif |
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extern char **environ; |
extern char **environ; |
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pio_pid_t pio_pidlist = SLIST_HEAD_INITIALIZER(pio_pidlist); |
pio_pid_t pio_pidlist = SLIST_HEAD_INITIALIZER(pio_pidlist); |
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#ifdef HAVE_LIBPTHREAD |
static pthread_mutex_t pidlist_mutex = PTHREAD_MUTEX_INITIALIZER; |
static pthread_mutex_t pidlist_mutex = PTHREAD_MUTEX_INITIALIZER; |
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#define THREAD_LOCK() if (__isthreaded) pthread_mutex_lock(&pidlist_mutex) | #define THREAD_LOCK() pthread_mutex_lock(&pidlist_mutex) |
#define THREAD_UNLOCK() if (__isthreaded) pthread_mutex_unlock(&pidlist_mutex) | #define THREAD_UNLOCK() pthread_mutex_unlock(&pidlist_mutex) |
| #else |
| #define THREAD_LOCK() |
| #define THREAD_UNLOCK() |
| #endif |
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/* |
/* |
* e_popen() - ELWIX replacement of standard popen |
* e_popen() - ELWIX replacement of standard popen |
* |
* |
* @command = command |
* @command = command |
* @type = type |
* @type = type |
* @ppid = return pid of child program |
* @ppid = return pid of child program |
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* If value of *ppid is -1 when invoke routine then child will be session leader |
* return: NULL error or !=NULL open program |
* return: NULL error or !=NULL open program |
*/ |
*/ |
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#ifdef POPEN_STREAM |
FILE * |
FILE * |
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#else |
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int |
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#endif |
e_popen(const char *command, const char *type, pid_t *ppid) |
e_popen(const char *command, const char *type, pid_t *ppid) |
{ |
{ |
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return e_popen2(command, type, ppid, NULL, 0); |
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} |
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/* |
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* e_popen2() - ELWIX replacement of standard popen with post close of chosen handles |
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* |
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* @command = command |
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* @type = type |
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* @ppid = return pid of child program |
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* If value of *ppid is -1 when invoke routine then child will be session leader |
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* @fds = file descriptor array for close when fork |
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* @fdslen = fds number of descriptors |
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* return: NULL error or !=NULL open program |
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*/ |
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#ifdef POPEN_STREAM |
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FILE * |
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#else |
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int |
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#endif |
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e_popen2(const char *command, const char *type, pid_t *ppid, int *fds, size_t fdslen) |
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{ |
struct tagPIOPID *cur, *p; |
struct tagPIOPID *cur, *p; |
FILE *iop; | int pdes[2], pid, twoway, cloexec, i; |
int pdes[2], pid, twoway, cloexec; | |
char *argv[4]; |
char *argv[4]; |
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if (!command || !type) |
if (!command || !type) |
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#ifdef POPEN_STREAM |
return NULL; |
return NULL; |
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#else |
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return -1; |
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#endif |
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cloexec = strchr(type, 'e') != NULL; |
cloexec = strchr(type, 'e') != NULL; |
/* |
/* |
Line 37 e_popen(const char *command, const char *type, pid_t *
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Line 123 e_popen(const char *command, const char *type, pid_t *
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if (strchr(type, '+')) { |
if (strchr(type, '+')) { |
twoway = 1; |
twoway = 1; |
type = "r+"; |
type = "r+"; |
} else { | } else { |
twoway = 0; |
twoway = 0; |
if ((*type != 'r' && *type != 'w') || | if ((*type != 'r' && *type != 'w') || |
(type[1] && (type[1] != 'e' || type[2]))) | (type[1] && (type[1] != 'e' || type[2]))) |
return (NULL); | #ifdef POPEN_STREAM |
| return NULL; |
| #else |
| return -1; |
| #endif |
} |
} |
if ((cloexec ? pipe2(pdes, O_CLOEXEC) : pipe(pdes)) < 0) | if (socketpair(AF_UNIX, SOCK_STREAM | (cloexec ? O_CLOEXEC : 0), |
return (NULL); | 0, pdes) < 0) { |
| LOGERR; |
| #ifdef POPEN_STREAM |
| return NULL; |
| #else |
| return -1; |
| #endif |
| } |
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if (!(cur = e_malloc(sizeof(struct tagPIOPID)))) { |
if (!(cur = e_malloc(sizeof(struct tagPIOPID)))) { |
close(pdes[0]); |
close(pdes[0]); |
close(pdes[1]); |
close(pdes[1]); |
return (NULL); | #ifdef POPEN_STREAM |
| return NULL; |
| #else |
| return -1; |
| #endif |
} |
} |
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argv[0] = "sh"; |
argv[0] = "sh"; |
argv[1] = "-c"; |
argv[1] = "-c"; |
argv[2] = (char *)command; | argv[2] = (char *) command; |
argv[3] = NULL; |
argv[3] = NULL; |
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THREAD_LOCK(); |
THREAD_LOCK(); |
switch (pid = vfork()) { |
switch (pid = vfork()) { |
case -1: /* Error. */ |
case -1: /* Error. */ |
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LOGERR; |
THREAD_UNLOCK(); |
THREAD_UNLOCK(); |
close(pdes[0]); |
close(pdes[0]); |
close(pdes[1]); |
close(pdes[1]); |
e_free(cur); |
e_free(cur); |
return (NULL); | #ifdef POPEN_STREAM |
| return NULL; |
| #else |
| return -1; |
| #endif |
/* NOTREACHED */ |
/* NOTREACHED */ |
case 0: /* Child. */ |
case 0: /* Child. */ |
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if (ppid && *ppid == -1) |
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setsid(); |
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if (fds && fdslen) { |
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for (i = 0; i < fdslen; i++) |
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close(fds[i]); |
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} |
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if (*type == 'r') { |
if (*type == 'r') { |
/* |
/* |
* The _dup2() to STDIN_FILENO is repeated to avoid |
* The _dup2() to STDIN_FILENO is repeated to avoid |
Line 101 e_popen(const char *command, const char *type, pid_t *
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Line 215 e_popen(const char *command, const char *type, pid_t *
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close(pdes[1]); |
close(pdes[1]); |
} |
} |
SLIST_FOREACH(p, &pio_pidlist, next) |
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); |
execve(_PATH_BSHELL, argv, environ); |
_exit(127); |
_exit(127); |
/* NOTREACHED */ |
/* NOTREACHED */ |
Line 113 e_popen(const char *command, const char *type, pid_t *
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Line 231 e_popen(const char *command, const char *type, pid_t *
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/* Parent; assume fdopen can't fail. */ |
/* Parent; assume fdopen can't fail. */ |
if (*type == 'r') { |
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]); |
close(pdes[1]); |
} else { |
} 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]); |
close(pdes[0]); |
} |
} |
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/* Link into list of file descriptors. */ |
/* Link into list of file descriptors. */ |
cur->fp = iop; |
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cur->pid = pid; |
cur->pid = pid; |
THREAD_LOCK(); |
THREAD_LOCK(); |
SLIST_INSERT_HEAD(&pio_pidlist, cur, next); |
SLIST_INSERT_HEAD(&pio_pidlist, cur, next); |
THREAD_UNLOCK(); |
THREAD_UNLOCK(); |
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return (iop); | #ifdef POPEN_STREAM |
| return cur->f.fp; |
| #else |
| return cur->f.fd; |
| #endif |
} |
} |
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/* |
/* |
Line 137 e_popen(const char *command, const char *type, pid_t *
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Line 266 e_popen(const char *command, const char *type, pid_t *
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* return: -1 error or !=-1 pid status |
* return: -1 error or !=-1 pid status |
*/ |
*/ |
int |
int |
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#ifdef POPEN_STREAM |
e_pclose(FILE *iop) |
e_pclose(FILE *iop) |
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#else |
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e_pclose(int iop) |
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#endif |
{ |
{ |
struct tagPIOPID *cur, *last = NULL; |
struct tagPIOPID *cur, *last = NULL; |
int pstat; | int pstat = 0; |
pid_t pid; |
pid_t pid; |
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if (!iop) |
if (!iop) |
Line 151 e_pclose(FILE *iop)
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Line 284 e_pclose(FILE *iop)
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*/ |
*/ |
THREAD_LOCK(); |
THREAD_LOCK(); |
SLIST_FOREACH(cur, &pio_pidlist, next) { |
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; |
break; |
last = cur; |
last = cur; |
} |
} |
Line 165 e_pclose(FILE *iop)
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Line 302 e_pclose(FILE *iop)
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SLIST_REMOVE_AFTER(last, next); |
SLIST_REMOVE_AFTER(last, next); |
THREAD_UNLOCK(); |
THREAD_UNLOCK(); |
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#ifdef POPEN_STREAM |
fclose(iop); |
fclose(iop); |
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#else |
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close(iop); |
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#endif |
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do { |
do { |
pid = wait4(cur->pid, &pstat, 0, NULL); |
pid = wait4(cur->pid, &pstat, 0, NULL); |
Line 183 e_pclose(FILE *iop)
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Line 324 e_pclose(FILE *iop)
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* return: NULL error or !=NULL tagPIOPID structure |
* return: NULL error or !=NULL tagPIOPID structure |
*/ |
*/ |
struct tagPIOPID * |
struct tagPIOPID * |
pio_pgetpid(FILE * __restrict iop) | #ifdef POPEN_STREAM |
| pio_pgetpid(FILE *iop) |
| #else |
| pio_pgetpid(int iop) |
| #endif |
{ |
{ |
struct tagPIOPID *p; |
struct tagPIOPID *p; |
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Line 192 pio_pgetpid(FILE * __restrict iop)
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Line 337 pio_pgetpid(FILE * __restrict iop)
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THREAD_LOCK(); |
THREAD_LOCK(); |
SLIST_FOREACH(p, &pio_pidlist, next) |
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; |
break; |
THREAD_UNLOCK(); |
THREAD_UNLOCK(); |
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return p; |
return p; |
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} |
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/* |
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* pio_pchkpid() - Check exit status of child programs |
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* |
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* @pids = return tagPIOPID structures of exited programs, |
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* if !=NULL must call array_Destroy() |
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* return: -1 error or >-1 exited programs |
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*/ |
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int |
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pio_pchkpid(array_t ** __restrict pids) |
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{ |
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register int ret = 0; |
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struct tagPIOPID *p; |
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array_t *pa = NULL; |
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if (pids) { |
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if (!(pa = array_Init(0))) |
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return -1; |
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else |
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*pids = pa; |
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} |
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THREAD_LOCK(); |
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SLIST_FOREACH(p, &pio_pidlist, next) |
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#ifdef POPEN_STREAM |
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if (p->f.fp && waitpid(p->pid, &p->stat, WNOHANG) > 0) { |
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#else |
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if (p->f.fd && waitpid(p->pid, &p->stat, WNOHANG) > 0) { |
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#endif |
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if (pids) |
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array_Push(pa, p, 0); |
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ret++; |
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} |
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THREAD_UNLOCK(); |
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return ret; |
} |
} |