55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2016 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <apw/stdlib.h>
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int
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system(const char *command)
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{
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pid_t pid;
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Waitmsg *w;
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int ret = 0;
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char *s = nil;
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if(command == nil)
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return jehanne_access("/cmd/rc", AEXEC) == 0;
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switch(pid = sys_rfork(RFFDG|RFREND|RFPROC|RFENVG|RFNOTEG)){
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case -1:
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return -1;
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case 0:
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jehanne_execl("/cmd/rc", "rc", "-c", command, nil);
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jehanne_sysfatal("execl returned");
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return -1;
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default:
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// TODO: fix this http://man7.org/linux/man-pages/man3/system.3.html
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while((w = jehanne_wait()) && w->pid != pid)
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jehanne_free(w);
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if(w == nil)
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return -1;
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if(w->msg[0] != 0){
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s = jehanne_strstr(w->msg, __POSIX_EXIT_PREFIX);
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if(s){
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s += (sizeof(__POSIX_EXIT_PREFIX)/sizeof(char) - 1);
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ret = jehanne_atoi(s);
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} else
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ret = 127;
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}
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jehanne_free(w);
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return ret;
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}
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}
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