©2004 by Marc J. Rochkind. All rights reserved. Portions marked "Open Source" may be copied under license.

 

                 

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c6/sh3.c File Reference

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Detailed Description

real shell (version 4) [Sec. 6.4]

Definition in file sh3.c.

Go to the source code of this file.

Defines
#define	WANT_TESTx
#define	MAXARG   50
#define	MAXFNAME   500
#define	MAXWORD   500
#define	PROMPT   "* "
Enumerations
enum	TOKEN {   T_WORD, T_BAR, T_AMP, T_SEMI,   T_GT, T_GTGT, T_LT, T_NL,   T_EOF, T_ERROR }
Functions
void	fd_check (void)
bool	store_char (char *word, size_t maxword, int c, size_t *np)
TOKEN	gettoken (char *word, size_t maxword)
bool	builtin (int argc, char *argv[], int srcfd, int dstfd)
bool	ignore_sig (void)
bool	entry_sig (void)
bool	wait_and_display (pid_t pid)
void	redirect (int srcfd, const char *srcfile, int dstfd, const char *dstfile, bool append, bool bckgrnd)
pid_t	invoke (int argc, char *argv[], int srcfd, const char *srcfile, int dstfd, const char *dstfile, bool append, bool bckgrnd, int closefd)
TOKEN	command (pid_t *wpid, bool makepipe, int *pipefdp)
int	main (void)
Variables
sigaction entry_int	entry_quit

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Define Documentation

#define MAXARG   50

Definition at line 28 of file sh3.c.

#define MAXFNAME   500

Definition at line 29 of file sh3.c. Referenced by command().

#define MAXWORD   500

Definition at line 30 of file sh3.c. Referenced by command().

#define PROMPT   "* "

Definition at line 32 of file sh3.c. Referenced by main().

#define WANT_TESTx

Definition at line 25 of file sh3.c.

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Enumeration Type Documentation

enum TOKEN

Enumeration values: T_WORD  T_BAR  T_AMP  T_SEMI  T_GT  T_GTGT  T_LT  T_NL  T_EOF  T_ERROR  Definition at line 60 of file sh3.c. Referenced by command(), gettoken(), and main().

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Function Documentation

bool builtin (  int  argc, char *  argv[], int  srcfd, int  dstfd )  [static]

Definition at line 143 of file sh3.c. References asg(), chdir(), getenv(), and set(). Referenced by invoke().

TOKEN command (  pid_t *  wpid, bool  makepipe, int *  pipefdp )  [static]

Definition at line 296 of file sh3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, exit(), gettoken(), invoke(), MAXARG, MAXFNAME, MAXWORD, pipe(), T_AMP, T_BAR, T_EOF, T_ERROR, T_GT, T_GTGT, T_LT, T_NL, T_SEMI, T_WORD, and TOKEN. Referenced by main().

bool entry_sig (  void   )  [static]

Definition at line 191 of file sh3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, entry_quit, and sigaction(). Referenced by invoke().

void fd_check (  void   )  [static]

Definition at line 34 of file sh3.c. References _exit(), errno, and fcntl(). Referenced by main(), and redirect().

TOKEN gettoken (  char *  word, size_t  maxword )  [static]

Definition at line 63 of file sh3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_false, store_char(), T_AMP, T_BAR, T_EOF, T_ERROR, T_GT, T_GTGT, T_LT, T_NL, T_SEMI, T_WORD, and TOKEN. Referenced by command().

bool ignore_sig (  void   )  [static]

Definition at line 168 of file sh3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, entry_quit, sigaction::sa_handler, and sigaction(). Referenced by main().

pid_t invoke (  int  argc, char *  argv[], int  srcfd, const char *  srcfile, int  dstfd, const char *  dstfile, bool  append, bool  bckgrnd, int  closefd )  [static]

Definition at line 251 of file sh3.c. References _exit(), builtin(), close(), EC_CLEANUP_BGN, EC_CLEANUP_END, ec_false, ec_neg1, entry_sig(), execvp(), fork(), and redirect(). Referenced by command().

int main (  void   )

Definition at line 389 of file sh3.c. References command(), EC_FLUSH, fd_check(), ignore_sig(), PROMPT, T_AMP, T_ERROR, T_NL, TOKEN, and wait_and_display().

void redirect (  int  srcfd, const char *  srcfile, int  dstfd, const char *  dstfile, bool  append, bool  bckgrnd )  [static]

Definition at line 218 of file sh3.c. References _exit(), close(), dup2(), EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, fd_check(), open(), and PERM_FILE. Referenced by invoke().

bool store_char (  char *  word, size_t  maxword, int  c, size_t *  np )  [static]

Definition at line 48 of file sh3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_false, and errno. Referenced by gettoken().

bool wait_and_display (  pid_t  pid  )  [static]

Definition at line 202 of file sh3.c. References display_status(), EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, and waitpid().

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Variable Documentation

struct sigaction entry_int entry_quit [static]

Definition at line 166 of file sh3.c. Referenced by entry_sig(), and ignore_sig().

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