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Some commands are shell builtins. Execute the builtins by the shell

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and not directly by make(1).

PR: bin/6550
Submitted by: Theo de Raadt <deraadt@cvs.openbsd.org & wosch
This commit is contained in:
Wolfram Schneider 1998-05-12 11:54:12 +00:00
parent b5d6d28e62
commit 43721e3d1d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=35968
1 changed files with 50 additions and 1 deletions
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51
usr.bin/make/compat.c
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@ -35,7 +35,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $Id: compat.c,v 1.8 1997/02/22 19:27:07 peter Exp $
*/
#ifndef lint
@ -83,6 +83,10 @@ static void CompatInterrupt __P((int));
static int CompatRunCommand __P((ClientData, ClientData));
static int CompatMake __P((ClientData, ClientData));
static char *sh_builtin[] = {
"alias", "cd", "eval", "exec", "exit", "read", "set", "ulimit",
"unalias", "umask", "unset", "wait", ":", 0};
/*-
*-----------------------------------------------------------------------
* CompatInterrupt --
@ -128,6 +132,33 @@ CompatInterrupt (signo)
exit (signo);
}
/*-
*-----------------------------------------------------------------------
* shellneed --
*
* Results:
* Returns 1 if a specified line must be executed by the shell,
* 0 if it can be run via execve, and -1 if the command is a no-op.
*
* Side Effects:
* None.
*
*-----------------------------------------------------------------------
*/
static int
shellneed (cmd)
char *cmd;
{
char **av, *p;
int ac;
av = brk_string(cmd, &ac, TRUE);
for(p = *sh_builtin; p != 0; p++)
if (strcmp(av[1], p) == 0)
return (1);
return (0);
}
/*-
*-----------------------------------------------------------------------
* CompatRunCommand --
@ -161,6 +192,7 @@ CompatRunCommand (cmdp, gnp)
* dynamically allocated */
Boolean local; /* TRUE if command should be executed
* locally */
int internal; /* Various values.. */
char *cmd = (char *) cmdp;
GNode *gn = (GNode *) gnp;
@ -249,6 +281,23 @@ CompatRunCommand (cmdp, gnp)
*/
static char *shargv[4] = { "/bin/sh" };
shargv[1] = (errCheck ? "-ec" : "-c");
shargv[2] = cmd;
shargv[3] = (char *)NULL;
av = shargv;
argc = 0;
} else if ((internal = shellneed(cmd))) {
/*
* This command must be passed by the shell for other reasons..
* or.. possibly not at all.
*/
static char *shargv[4] = { "/bin/sh" };
if (internal == -1) {
/* Command does not need to be executed */
return (0);
}
shargv[1] = (errCheck ? "-ec" : "-c");
shargv[2] = cmd;
shargv[3] = (char *)NULL;