mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
140 lines
3.0 KiB
C
140 lines
3.0 KiB
C
/* libguestfs - the guestfsd daemon
|
|
* Copyright (C) 2009 Red Hat Inc.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "guestfs_protocol.h"
|
|
#include "daemon.h"
|
|
#include "actions.h"
|
|
|
|
static char **
|
|
grep (const char *prog, const char *flag, const char *regex, const char *path)
|
|
{
|
|
char *out, *err;
|
|
int fd, flags, r;
|
|
char **lines;
|
|
|
|
CHROOT_IN;
|
|
fd = open (path, O_RDONLY);
|
|
CHROOT_OUT;
|
|
|
|
if (fd == -1) {
|
|
reply_with_perror ("%s", path);
|
|
return NULL;
|
|
}
|
|
|
|
/* Note that grep returns an error if no match. We want to
|
|
* suppress this error and return an empty list.
|
|
*/
|
|
flags = COMMAND_FLAG_CHROOT_COPY_FILE_TO_STDIN | fd;
|
|
r = commandrf (&out, &err, flags, prog, flag, regex, NULL);
|
|
if (r == -1 || r > 1) {
|
|
reply_with_error ("%s %s %s: %s", prog, flag, regex, err);
|
|
free (out);
|
|
free (err);
|
|
return NULL;
|
|
}
|
|
|
|
free (err);
|
|
|
|
lines = split_lines (out);
|
|
free (out);
|
|
if (lines == NULL) return NULL;
|
|
|
|
return lines;
|
|
}
|
|
|
|
char **
|
|
do_grep (const char *regex, const char *path)
|
|
{
|
|
/* The "--" is not really needed, but it helps when we don't need a flag. */
|
|
return grep ("grep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_egrep (const char *regex, const char *path)
|
|
{
|
|
return grep ("egrep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_fgrep (const char *regex, const char *path)
|
|
{
|
|
return grep ("fgrep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_grepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("grep", "-i", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_egrepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("egrep", "-i", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_fgrepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("fgrep", "-i", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zgrep (const char *regex, const char *path)
|
|
{
|
|
return grep ("zgrep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zegrep (const char *regex, const char *path)
|
|
{
|
|
return grep ("zegrep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zfgrep (const char *regex, const char *path)
|
|
{
|
|
return grep ("zfgrep", "--", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zgrepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("zgrep", "-i", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zegrepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("zegrep", "-i", regex, path);
|
|
}
|
|
|
|
char **
|
|
do_zfgrepi (const char *regex, const char *path)
|
|
{
|
|
return grep ("zfgrep", "-i", regex, path);
|
|
}
|