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/*
* $Id: pipe.h 769 2007-10-24 00:15:40Z hubert@u.washington.edu $
*
* ========================================================================
* Copyright 2013-2021 Eduardo Chappa
* Copyright 2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#ifndef PITH_OSDEP_PIPE_INCLUDED
#define PITH_OSDEP_PIPE_INCLUDED
/* Standard I/O File Descriptor Definitions */
#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
#define STDERR_FILENO 2
#endif
/*
* Flags for the pipe command routines...
*/
#define PIPE_WRITE 0x0001 /* set up pipe for reading */
#define PIPE_READ 0x0002 /* set up pipe for reading */
#define PIPE_NOSHELL 0x0004 /* don't exec in shell */
#define PIPE_USER 0x0008 /* user mode */
#define PIPE_STDERR 0x0010 /* stderr to child output */
#define PIPE_PROT 0x0020 /* protected mode */
#define PIPE_RESET 0x0040 /* reset terminal mode */
#define PIPE_DESC 0x0080 /* no stdio desc wrapping */
#define PIPE_SILENT 0x0100 /* no screen clear, etc */
#define PIPE_RUNNOW 0x0200 /* don't wait for child (PC-Pine) */
#define PIPE_RAW 0x0400 /* don't convert to locale */
#define PIPE_NONEWMAIL 0x0800 /* don't call new_mail */
#ifdef _WINDOWS
/*
* Flags for mswin_exec_and_wait
*/
#define MSWIN_EAW_CAPT_STDERR 0x0001
#define MSWIN_EAW_CTRL_C_CANCELS 0x0002
#endif
/*
* Reaper flags
*/
#define PR_NONE 0x0000
#ifdef WNOHANG
#define PR_NOHANG 0x0001
#endif
/*
* open_system_pipe callback so caller can insert code, typically interface
* stuff right before/after the fork and before/after wait
*/
#define OSB_PRE_OPEN 0x0001
#define OSB_POST_OPEN 0x0002
#define OSB_PRE_CLOSE 0x0004
#define OSB_POST_CLOSE 0x0008
/*
* structure required for the pipe commands...
*/
typedef struct pipe_s {
pid_t pid; /* child's process id */
int mode, /* mode flags used to open */
timeout, /* wait this long for child */
old_timeo; /* previous active alarm */
RETSIGTYPE (*hsig)(int), /* previously installed... */
(*isig)(int), /* handlers */
(*qsig)(int),
(*alrm)(int),
(*chld)(int);
union {
FILE *f;
int d;
} in; /* input data handle */
union {
FILE *f;
int d;
} out; /* output data handle */
char **argv, /* any necessary args */
*args,
*tmp; /* pointer to stuff */
#ifdef _WINDOWS
char *infile; /* file containing pipe's stdin */
char *outfile; /* file containing pipe's stdout */
char *command; /* command to execute */
int exit_code; /* proc rv if run right away */
int deloutfile; /* need to rm outfile at close */
#endif
} PIPE_S;
/*
* Exported Prototypes
*/
PIPE_S *open_system_pipe(char *, char **, char **, int, int,
void (*)(PIPE_S *, int, void *), void (*)(char *));
int close_system_pipe(PIPE_S **, int *, void (*)(PIPE_S *, int, void *));
int pipe_close_write(PIPE_S *);
pid_t process_reap(pid_t, int *, int);
#endif /* PITH_OSDEP_PIPE_INCLUDED */
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