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authorDick Streefland <dick@streefland.net>2009-10-06 22:35:40 +0200
committerSteven Rostedt <rostedt@goodmis.org>2009-10-07 11:44:18 -0400
commit7b76bfc86757ca5e7b0a62f50003752da77c115b (patch)
treea71a191c73f9b5364f161a01eb7f61ef62a51515 /scripts/binoffset.c
parent0eca52a92735f43462165efe00a7e394345fb38e (diff)
downloadop-kernel-dev-7b76bfc86757ca5e7b0a62f50003752da77c115b.zip
op-kernel-dev-7b76bfc86757ca5e7b0a62f50003752da77c115b.tar.gz
kconfig: simplification of scripts/extract-ikconfig
I've rewritten the extract-ikconfig script to extract the kernel configuration from a kernel compiled with CONFIG_IKCONFIG. The main motivation for the rewrite was to remove the dependency on the external C program binoffset.c, which is compiled on the initial run. The binoffset executable is invoked with a relative path, which means that the old script can only be run from the top of the kernel tree, and only when you have write permission in the scripts directory. The new script uses tr/grep/tail/zcat only, and can be invoked from anywhere. The binoffset.c program has been removed. This script requires GNU grep 2.5 (released 2002-03-13) or higher, because the -o option was introduced in that version. Signed-off-by: Dick Streefland <dick@streefland.net> LKML-Reference: <20091006203540.GA14634@streefland.net> Tested-by: Steven Rostedt <rostedt@goodmis.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'scripts/binoffset.c')
-rw-r--r--scripts/binoffset.c163
1 files changed, 0 insertions, 163 deletions
diff --git a/scripts/binoffset.c b/scripts/binoffset.c
deleted file mode 100644
index 1a2e39b..0000000
--- a/scripts/binoffset.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/***************************************************************************
- * binoffset.c
- * (C) 2002 Randy Dunlap <rdunlap@xenotime.net>
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-# binoffset.c:
-# - searches a (binary) file for a specified (binary) pattern
-# - returns the offset of the located pattern or ~0 if not found
-# - exits with exit status 0 normally or non-0 if pattern is not found
-# or any other error occurs.
-
-****************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#define VERSION "0.1"
-#define BUF_SIZE (16 * 1024)
-#define PAT_SIZE 100
-
-char *progname;
-char *inputname;
-int inputfd;
-unsigned int bix; /* buf index */
-unsigned char patterns [PAT_SIZE] = {0}; /* byte-sized pattern array */
-int pat_len; /* actual number of pattern bytes */
-unsigned char *madr; /* mmap address */
-size_t filesize;
-int num_matches = 0;
-off_t firstloc = 0;
-
-void usage (void)
-{
- fprintf (stderr, "%s ver. %s\n", progname, VERSION);
- fprintf (stderr, "usage: %s filename pattern_bytes\n",
- progname);
- fprintf (stderr, " [prints location of pattern_bytes in file]\n");
- exit (1);
-}
-
-void get_pattern (int pat_count, char *pats [])
-{
- int ix, err, tmp;
-
-#ifdef DEBUG
- fprintf (stderr,"get_pattern: count = %d\n", pat_count);
- for (ix = 0; ix < pat_count; ix++)
- fprintf (stderr, " pat # %d: [%s]\n", ix, pats[ix]);
-#endif
-
- for (ix = 0; ix < pat_count; ix++) {
- tmp = 0;
- err = sscanf (pats[ix], "%5i", &tmp);
- if (err != 1 || tmp > 0xff) {
- fprintf (stderr, "pattern or value error in pattern # %d [%s]\n",
- ix, pats[ix]);
- usage ();
- }
- patterns [ix] = tmp;
- }
- pat_len = pat_count;
-}
-
-void search_pattern (void)
-{
- for (bix = 0; bix < filesize; bix++) {
- if (madr[bix] == patterns[0]) {
- if (memcmp (&madr[bix], patterns, pat_len) == 0) {
- if (num_matches == 0)
- firstloc = bix;
- num_matches++;
- }
- }
- }
-}
-
-#ifdef NOTDEF
-size_t get_filesize (int fd)
-{
- off_t end_off = lseek (fd, 0, SEEK_END);
- lseek (fd, 0, SEEK_SET);
- return (size_t) end_off;
-}
-#endif
-
-size_t get_filesize (int fd)
-{
- int err;
- struct stat stat;
-
- err = fstat (fd, &stat);
- fprintf (stderr, "filesize: %ld\n", err < 0 ? (long)err : stat.st_size);
- if (err < 0)
- return err;
- return (size_t) stat.st_size;
-}
-
-int main (int argc, char *argv [])
-{
- progname = argv[0];
-
- if (argc < 3)
- usage ();
-
- get_pattern (argc - 2, argv + 2);
-
- inputname = argv[1];
-
- inputfd = open (inputname, O_RDONLY);
- if (inputfd == -1) {
- fprintf (stderr, "%s: cannot open '%s'\n",
- progname, inputname);
- exit (3);
- }
-
- filesize = get_filesize (inputfd);
-
- madr = mmap (0, filesize, PROT_READ, MAP_PRIVATE, inputfd, 0);
- if (madr == MAP_FAILED) {
- fprintf (stderr, "mmap error = %d\n", errno);
- close (inputfd);
- exit (4);
- }
-
- search_pattern ();
-
- if (munmap (madr, filesize))
- fprintf (stderr, "munmap error = %d\n", errno);
-
- if (close (inputfd))
- fprintf (stderr, "%s: error %d closing '%s'\n",
- progname, errno, inputname);
-
- fprintf (stderr, "number of pattern matches = %d\n", num_matches);
- if (num_matches == 0)
- firstloc = ~0;
- printf ("%ld\n", firstloc);
- fprintf (stderr, "%ld\n", firstloc);
-
- exit (num_matches ? 0 : 2);
-}
-
-/* end binoffset.c */
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