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ash: only execute regular files

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This commit is contained in:
David van Moolenbroek 2009-11-01 22:25:54 +00:00
parent f89388c241
commit 769bed22c8
1 changed files with 12 additions and 0 deletions
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12
commands/ash/input.c
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@ -47,6 +47,7 @@ __FBSDID("$FreeBSD: src/bin/sh/input.c,v 1.22 2004/04/06 20:06:51 markm Exp $");
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
/*
* This file implements the input routines used by the parser.
@ -430,10 +431,21 @@ setinputfile(char *fname, int push)
{
int fd;
int fd2;
struct stat statbuf;
int saved_errno;
INTOFF;
if ((fd = open(fname, O_RDONLY)) < 0)
error("Can't open %s: %s", fname, strerror(errno));
if (fstat(fd, &statbuf) < 0) {
saved_errno = errno;
close(fd);
error("Can't stat %s: %s", fname, strerror(saved_errno));
}
if (!S_ISREG(statbuf.st_mode)) {
close(fd);
error("Can't open %s: %s", fname, strerror(ENOEXEC));
}
if (fd < 10) {
fd2 = fcntl(fd, F_DUPFD, 10);
close(fd);