rosapps/mc/src/subshell.h

   1 #ifndef __SUBSHELL_H
   2 #define __SUBSHELL_H
   3
   4 /* Used to distinguish between a normal MC termination and */
   5 /* one caused by typing `exit' or `logout' in the subshell */
   6 #define SUBSHELL_EXIT 128
   7
   8 #ifdef HAVE_SUBSHELL_SUPPORT
   9
  10 /* If using a subshell for evaluating commands this is true */
  11 extern int use_subshell;
  12
  13 /* File descriptor of the pseudoterminal used by the subshell */
  14 extern int subshell_pty;
  15
  16 /* If true, the child forked in init_subshell will wait in a loop to be attached by gdb */
  17 extern int debug_subshell;
  18
  19 /* The key to switch back to MC from the subshell */
  20 extern char subshell_switch_key;
  21
  22 /* State of the subshell; see subshell.c for an explanation */
  23 enum subshell_state_enum {INACTIVE, ACTIVE, RUNNING_COMMAND};
  24 extern enum subshell_state_enum subshell_state;
  25
  26 /* Holds the latest prompt captured from the subshell */
  27 extern char *subshell_prompt;
  28
  29 /* For the `how' argument to various functions */
  30 enum {QUIETLY, VISIBLY};
  31
  32 /* Exported functions */
  33 void init_subshell (void);
  34 int invoke_subshell (const char *command, int how, char **new_dir);
  35 int read_subshell_prompt (int how);
  36 void resize_subshell (void);
  37 int exit_subshell (void);
  38 void do_subshell_chdir (char *command, int update_prompt, int reset_prompt);
  39 void subshell_get_console_attributes (void);
  40 void sigchld_handler (int sig);
  41
  42 #else
  43 #define use_subshell 0
  44 #endif /* not HAVE_SUBSHELL_SUPPORT */
  45
  46 #endif /* __SUBSHELL_H */