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Chet Ramey
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/* shell.h -- The data structures used by the shell */
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#include "config.h"
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#include "general.h"
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#include "error.h"
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#include "variables.h"
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#include "quit.h"
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#include "maxpath.h"
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#include "unwind_prot.h"
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#include "command.h"
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extern int EOF_Reached;
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#define NO_PIPE -1
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#define REDIRECT_BOTH -2
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#define IS_DESCRIPTOR -1
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#define NO_VARIABLE -1
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/* A bunch of stuff for flow of control using setjmp () and longjmp (). */
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#include <setjmp.h>
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extern jmp_buf top_level, catch;
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#define NOT_JUMPED 0 /* Not returning from a longjmp. */
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#define FORCE_EOF 1 /* We want to stop parsing. */
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#define DISCARD 2 /* Discard current command. */
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#define EXITPROG 3 /* Unconditionally exit the program now. */
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/* Values that can be returned by execute_command (). */
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#define EXECUTION_FAILURE 1
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#define EXECUTION_SUCCESS 0
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/* Special exit status used when the shell is asked to execute a
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binary file as a shell script. */
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#define EX_BINARY_FILE 126
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/* The list of characters that are quoted in double-quotes with a
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backslash. Other characters following a backslash cause nothing
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special to happen. */
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#define slashify_in_quotes "\\`$\""
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#define slashify_in_here_document "\\`$"
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/* Constants which specify how to handle backslashes and quoting in
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expand_word_internal (). Q_DOUBLE_QUOTES means to use the function
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slashify_in_quotes () to decide whether the backslash should be
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retained. Q_HERE_DOCUMENT means slashify_in_here_document () to
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decide whether to retain the backslash. Q_KEEP_BACKSLASH means
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to unconditionally retain the backslash. */
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#define Q_DOUBLE_QUOTES 0x1
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#define Q_HERE_DOCUMENT 0x2
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#define Q_KEEP_BACKSLASH 0x4
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extern char **shell_environment;
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extern WORD_LIST *rest_of_args;
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/* Generalized global variables. */
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extern int executing, login_shell;
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/* Structure to pass around that holds a bitmap of file descriptors
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to close, and the size of that structure. Used in execute_cmd.c. */
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struct fd_bitmap {
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long size;
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char *bitmap;
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};
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#define FD_BITMAP_SIZE 32
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#if defined (EIGHT_BIT)
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# define CTLESC '\001'
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# define CTLNUL '\002'
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#endif /* EIGHT_BIT */
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