Revision 74c002410548c7cb1744b45d17a5fa21da515b63 authored by Christoph Lameter on 15 March 2006, 03:50:21 UTC, committed by Linus Torvalds on 15 March 2006, 05:43:02 UTC
It seems that setting scheduling policy and priorities is also the kind of thing that might be performed in apps that also use the NUMA API, so it would seem consistent to use CAP_SYS_NICE for NUMA also. So use CAP_SYS_NICE for controlling migration permissions. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent b4fb376
binoffset.c
/***************************************************************************
* 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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