src/runner/execute_cmd.h

   1 /* execute_cmd.h - functions from execute_cmd.c. */
   2
   3 /* Copyright (C) 1993-2017 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Bush, the Bourne Again SHell.
   6
   7    Bush is free software: you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation, either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    Bush is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Bush.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #if !defined (_EXECUTE_CMD_H_)
  22 #define _EXECUTE_CMD_H_
  23
  24 #include "stdc.h"
  25
  26 #if defined (ARRAY_VARS)
  27 struct func_array_state
  28   {
  29     ARRAY *funcname_a;
  30     SHELL_VAR *funcname_v;
  31     ARRAY *source_a;
  32     SHELL_VAR *source_v;
  33     ARRAY *lineno_a;
  34     SHELL_VAR *lineno_v;
  35   };
  36 #endif
  37
  38 /* Placeholder for later expansion to include more execution state */
  39 /* XXX - watch out for pid_t */
  40 struct execstate
  41   {
  42     pid_t pid;
  43     int subshell_env;
  44   };
  45
  46
  47 /* Variables declared in execute_cmd.c, used by many other files */
  48 extern int return_catch_flag;
  49 extern int return_catch_value;
  50 extern volatile int last_command_exit_value;
  51 extern int last_command_exit_signal;
  52 extern int builtin_ignoring_errexit;
  53 extern int executing_builtin;
  54 extern int executing_list;
  55 extern int comsub_ignore_return;
  56 extern int subshell_level;
  57 extern int match_ignore_case;
  58 extern int executing_command_builtin;
  59 extern int funcnest, funcnest_max;
  60 extern int evalnest, evalnest_max;
  61 extern int sourcenest, sourcenest_max;
  62 extern int stdin_redir;
  63 extern int line_number_for_err_trap;
  64
  65 extern char *the_printed_command_except_trap;
  66
  67 extern char *this_command_name;
  68 extern SHELL_VAR *this_shell_function;
  69
  70 /* Functions declared in execute_cmd.c, used by many other files */
  71
  72 extern struct fd_bitmap *new_fd_bitmap PARAMS((int));
  73 extern void dispose_fd_bitmap PARAMS((struct fd_bitmap *));
  74 extern void close_fd_bitmap PARAMS((struct fd_bitmap *));
  75 extern int executing_line_number PARAMS((void));
  76 extern int execute_command PARAMS((COMMAND *));
  77 extern int execute_command_internal PARAMS((COMMAND *, int, int, int, struct fd_bitmap *));
  78 extern int shell_execve PARAMS((char *, char **, char **));
  79 extern void setup_async_signals PARAMS((void));
  80 extern void async_redirect_stdin PARAMS((void));
  81
  82 extern void undo_partial_redirects PARAMS((void));
  83 extern void dispose_partial_redirects PARAMS((void));
  84 extern void dispose_exec_redirects PARAMS((void));
  85
  86 extern int execute_shell_function PARAMS((SHELL_VAR *, WORD_LIST *));
  87
  88 extern struct coproc *getcoprocbypid PARAMS((pid_t));
  89 extern struct coproc *getcoprocbyname PARAMS((const char *));
  90
  91 extern void coproc_init PARAMS((struct coproc *));
  92 extern struct coproc *coproc_alloc PARAMS((char *, pid_t));
  93 extern void coproc_dispose PARAMS((struct coproc *));
  94 extern void coproc_flush PARAMS((void));
  95 extern void coproc_close PARAMS((struct coproc *));
  96 extern void coproc_closeall PARAMS((void));
  97 extern void coproc_reap PARAMS((void));
  98 extern pid_t coproc_active PARAMS((void));
  99
 100 extern void coproc_rclose PARAMS((struct coproc *, int));
 101 extern void coproc_wclose PARAMS((struct coproc *, int));
 102 extern void coproc_fdclose PARAMS((struct coproc *, int));
 103
 104 extern void coproc_checkfd PARAMS((struct coproc *, int));
 105 extern void coproc_fdchk PARAMS((int));
 106
 107 extern void coproc_pidchk PARAMS((pid_t, int));
 108
 109 extern void coproc_fdsave PARAMS((struct coproc *));
 110 extern void coproc_fdrestore PARAMS((struct coproc *));
 111
 112 extern void coproc_setvars PARAMS((struct coproc *));
 113 extern void coproc_unsetvars PARAMS((struct coproc *));
 114
 115 #if defined (PROCESS_SUBSTITUTION)
 116 extern void close_all_files PARAMS((void));
 117 #endif
 118
 119 #if defined (ARRAY_VARS)
 120 extern void restore_funcarray_state PARAMS((struct func_array_state *));
 121 #endif
 122
 123 #endif /* _EXECUTE_CMD_H_ */