exec.c File Reference

#include "shell.h"
#include "main.h"
#include "nodes.h"
#include "parser.h"
#include "redir.h"
#include "eval.h"
#include "exec.h"
#include "builtins.h"
#include "var.h"
#include "options.h"
#include "input.h"
#include "output.h"
#include "syntax.h"
#include "memalloc.h"
#include "error.h"
#include "init.h"
#include "mystring.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>

Include dependency graph for exec.c:

Go to the source code of this file.

Data Structures
struct	tblentry
Defines
#define	CMDTABLESIZE   31
#define	ARB   1
Functions
STATIC void	tryexec ()
STATIC void	execinterp ()
STATIC void	printentry ()
STATIC void	clearcmdentry ()
STATIC struct tblentry *	cmdlookup ()
STATIC void	delete_cmd_entry ()
void	shellexec (char **argv, char **envp, char *path, index)
STATIC void	tryexec (char *cmd, char **argv, char **envp)
char *	padvance (char **path, char *name)
	hashcmd (argc, char **argv)
STATIC void	printentry (struct tblentry *cmdp)
void	find_command (char *name, struct cmdentry *entry, printerr)
int	find_builtin (char *name)
void	hashcd ()
void	changepath (char *newval)
STATIC void	clearcmdentry (firstchange)
void	deletefuncs ()
STATIC struct tblentry *	cmdlookup (char *name, add)
void	addcmdentry (char *name, struct cmdentry *entry)
void	defun (char *name, union node *func)
void	unsetfunc (char *name)
Variables
static char	sccsid [] = "@(#)exec.c 5.2 (Berkeley) 3/13/91"
STATIC struct tblentry *	cmdtable [CMDTABLESIZE]
STATIC int	builtinloc = -1
char *	pathopt
tblentry **	lastcmdentry

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Define Documentation

#define ARB   1

Definition at line 75 of file exec.c.

#define CMDTABLESIZE   31

Definition at line 74 of file exec.c. Referenced by clearcmdentry(), cmdlookup(), deletefuncs(), hashcd(), and hashcmd().

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Function Documentation

void addcmdentry (  char *  name, struct cmdentry *  entry )

Definition at line 774 of file exec.c. References CMDFUNCTION, cmdlookup(), cmdp, entry, INTOFF, and INTON. Referenced by defun().

void changepath (  char *  newval  )

Definition at line 583 of file exec.c. References index(), and pathval.

STATIC void clearcmdentry (  firstchange   )

Definition at line 628 of file exec.c. References builtinloc, ckfree, CMDBUILTIN, CMDNORMAL, cmdp, cmdtable, CMDTABLESIZE, INTOFF, and NULL.

STATIC void clearcmdentry (   )

STATIC struct tblentry* cmdlookup (  char *  name, add  )

Definition at line 698 of file exec.c. References cmdp, cmdtable, CMDTABLESIZE, and equal.

STATIC struct tblentry* cmdlookup (   )

Referenced by addcmdentry(), find_command(), and unsetfunc().

void defun (  char *  name, union node *  func )

Definition at line 796 of file exec.c. References addcmdentry(), CMDFUNCTION, entry, func, INTOFF, and INTON. Referenced by evaltree(), and lccmd().

STATIC void delete_cmd_entry (   )

Definition at line 737 of file exec.c. References ckfree, cmdp, INTOFF, INTON, and lastcmdentry. Referenced by unsetfunc().

void deletefuncs (   )

Definition at line 663 of file exec.c. References ckfree, CMDFUNCTION, cmdp, cmdtable, CMDTABLESIZE, INTOFF, and NULL.

STATIC void execinterp (   )

Referenced by tryexec().

int find_builtin (  char *  name  )

Definition at line 541 of file exec.c. References bp, and equal. Referenced by evalcommand(), and find_command().

void find_command (  char *  name, struct cmdentry *  entry, printerr  )

Definition at line 394 of file exec.c. References builtinloc, CMDBUILTIN, CMDFUNCTION, cmdlookup(), CMDNORMAL, cmdp, e, EACCES, EINTR, ENOENT, ENOTDIR, entry, errno, error, find_builtin(), getegid, geteuid, getgroups, index(), INTOFF, INTON, loop, ngroups, NULL, padvance(), path, pathopt, pathval, prefix, readcmdfile(), S_IFMT, S_IFREG, stat::st_gid, stat::st_mode, stat::st_uid, stalloc(), stat, strchr, strlen(), stunalloc(), and TRACE. Referenced by evalcommand(), and prehash().

void hashcd (   )

Definition at line 561 of file exec.c. References builtinloc, CMDBUILTIN, CMDNORMAL, cmdp, cmdtable, and CMDTABLESIZE.

hashcmd (  argc  , char **  argv )

Definition at line 313 of file exec.c. References argc, cmdp, cmdtable, CMDTABLESIZE, entry, printentry(), and verbose.

char* padvance (  char **  path, char *  name )

Definition at line 274 of file exec.c. References bcopy, growstackblock(), NULL, stackblock, stackblocksize, stalloc(), start, strcpy(), and strlen(). Referenced by cdcmd(), chkmail(), find_command(), printentry(), and shellexec().

STATIC void printentry (  struct tblentry *  cmdp  )

Definition at line 357 of file exec.c. References CMDBUILTIN, CMDFUNCTION, CMDNORMAL, error, index(), out1c, out1fmt(), out1str(), padvance(), path, pathval, and stunalloc().

STATIC void printentry (   )

Referenced by hashcmd().

void shellexec (  char **  argv, char **  envp, char *  path, index  )

Definition at line 116 of file exec.c. References tblentry::cmdname, e, E_EXEC, ENOENT, ENOTDIR, errmsg, errno, error2(), index(), NULL, padvance(), pathopt, strchr, stunalloc(), and tryexec(). Referenced by execcmd().

STATIC void tryexec (  char *  cmd, char **  argv, char **  envp )

Definition at line 142 of file exec.c. References arg0, commandname, e, EINTR, ENOEXEC, errno, execinterp(), execve, exraise(), EXSHELLPROC, initshellproc(), p, parsenextc, parsenleft, pgetc(), pungetc(), savestr, setinputfile(), and setparam().

STATIC void tryexec (   )

Referenced by shellexec().

void unsetfunc (  char *  name  )

Definition at line 815 of file exec.c. References CMDFUNCTION, cmdlookup(), cmdp, delete_cmd_entry(), and NULL. Referenced by unsetcmd().

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Variable Documentation

STATIC int builtinloc = -1

Definition at line 89 of file exec.c. Referenced by clearcmdentry(), find_command(), and hashcd().

STATIC struct tblentry* cmdtable[CMDTABLESIZE]

Definition at line 88 of file exec.c. Referenced by clearcmdentry(), cmdlookup(), deletefuncs(), hashcd(), and hashcmd().

struct tblentry** lastcmdentry

Definition at line 694 of file exec.c. Referenced by delete_cmd_entry().

char* pathopt

Definition at line 271 of file exec.c. Referenced by chkmail(), find_command(), and shellexec().

char sccsid[] = "@(#)exec.c 5.2 (Berkeley) 3/13/91" [static]

Definition at line 38 of file exec.c.

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