mirror of
git://git.code.sf.net/p/cdesktopenv/code
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109 lines
4.4 KiB
C
109 lines
4.4 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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#pragma prototyped
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/*
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* process library interface
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*/
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#ifndef _PROC_H
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#define _PROC_H
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#include <ast.h>
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#define PROC_ARGMOD (1<<0) /* argv[-1],argv[0] can be modified */
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#define PROC_BACKGROUND (1<<1) /* shell background (&) setup */
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#define PROC_CHECK (1<<17) /* check that command exists */
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#define PROC_CLEANUP (1<<2) /* close parent redirect fds on error */
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#define PROC_DAEMON (1<<3) /* daemon setup */
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#define PROC_ENVCLEAR (1<<4) /* clear environment */
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#define PROC_FOREGROUND (1<<14) /* system(3) setup */
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#define PROC_GID (1<<5) /* setgid(getgid()) */
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#define PROC_IGNORE (1<<6) /* ignore parent pipe errors */
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#define PROC_IGNOREPATH (1<<16) /* procrun() intercept to ignore path */
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#define PROC_ORPHAN (1<<18) /* create orphaned process */
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#define PROC_OVERLAY (1<<7) /* overlay current process if possible */
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#define PROC_PARANOID (1<<8) /* restrict everything */
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#define PROC_PRIVELEGED (1<<9) /* setuid(0), setgid(getegid()) */
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#define PROC_READ (1<<10) /* proc pipe fd 1 returned */
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#define PROC_SESSION (1<<11) /* session leader */
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#define PROC_UID (1<<12) /* setuid(getuid()) */
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#define PROC_WRITE (1<<13) /* proc pipe fd 0 returned */
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#define PROC_ZOMBIE (1<<15) /* proc may leave a zombie behind */
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#define PROC_ARG_BIT 14 /* bits per op arg */
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#define PROC_OP_BIT 4 /* bits per op */
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#define PROC_ARG_NULL ((1<<PROC_ARG_BIT)-1)
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#define PROC_fd_dup 0x4
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#define PROC_FD_CHILD 0x1
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#define PROC_FD_PARENT 0x2
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#define PROC_sig_dfl 0x8
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#define PROC_sig_ign 0x9
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#define PROC_sys_pgrp 0xa
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#define PROC_sys_umask 0xb
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#define PROC_fd_ctty 0xc
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#define PROC_op1(o,a) (((o)<<(2*PROC_ARG_BIT))|((a)&((PROC_ARG_NULL<<PROC_ARG_BIT)|PROC_ARG_NULL)))
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#define PROC_op2(o,a,b) (((o)<<(2*PROC_ARG_BIT))|(((b)&PROC_ARG_NULL)<<PROC_ARG_BIT)|((a)&PROC_ARG_NULL))
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#define PROC_FD_CLOSE(p,f) PROC_op2(PROC_fd_dup|(f),p,PROC_ARG_NULL)
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#define PROC_FD_CTTY(f) PROC_op1(PROC_fd_ctty,f)
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#define PROC_FD_DUP(p,c,f) PROC_op2(PROC_fd_dup|(f),p,c)
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#define PROC_SIG_DFL(s) PROC_op1(PROC_sig_dfl,s,0)
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#define PROC_SIG_IGN(s) PROC_op1(PROC_sig_ign,s,0)
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#define PROC_SYS_PGRP(g) PROC_op1(PROC_sys_pgrp,g)
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#define PROC_SYS_UMASK(m) PROC_op1(PROC_sys_umask,m,0)
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#define PROC_OP(x) (((x)>>(2*PROC_ARG_BIT))&((1<<PROC_OP_BIT)-1))
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#define PROC_ARG(x,n) ((n)?(((x)>>(((n)-1)*PROC_ARG_BIT))&PROC_ARG_NULL):(((x)&~((1<<(2*PROC_ARG_BIT))-1))==~((1<<(2*PROC_ARG_BIT))-1))?(-1):((x)&~((1<<(2*PROC_ARG_BIT))-1)))
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typedef struct
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{
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pid_t pid; /* process id */
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pid_t pgrp; /* process group id */
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int rfd; /* read fd if applicable */
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int wfd; /* write fd if applicable */
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#ifdef _PROC_PRIVATE_
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_PROC_PRIVATE_
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#endif
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} Proc_t;
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#if _BLD_ast && defined(__EXPORT__)
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#define extern __EXPORT__
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#endif
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extern int procclose(Proc_t*);
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extern int procfree(Proc_t*);
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extern Proc_t* procopen(const char*, char**, char**, long*, int);
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extern int procrun(const char*, char**, int);
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#undef extern
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#endif
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