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/* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "../src/guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
static int
input_to_nul (FILE *fp, char *buf, int maxlen)
{
int i = 0, c;
while (i < maxlen) {
c = fgetc (fp);
if (c == EOF)
return 0;
buf[i++] = c;
if (c == '\0')
return i;
}
reply_with_error ("input_to_nul: input string too long");
return -1;
}
char **
do_find (const char *dir)
{
struct stat statbuf;
int r, len, sysrootdirlen;
char *cmd;
FILE *fp;
char **res = NULL;
int size = 0, alloc = 0;
char *sysrootdir;
char str[PATH_MAX];
sysrootdir = sysroot_path (dir);
if (!sysrootdir) {
reply_with_perror ("malloc");
return NULL;
}
r = stat (sysrootdir, &statbuf);
if (r == -1) {
reply_with_perror ("%s", dir);
free (sysrootdir);
return NULL;
}
if (!S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: not a directory", dir);
free (sysrootdir);
return NULL;
}
sysrootdirlen = strlen (sysrootdir);
/* Assemble the external find command. */
if (asprintf_nowarn (&cmd, "find %Q -print0", sysrootdir) == -1) {
reply_with_perror ("malloc");
free (sysrootdir);
return NULL;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
free (cmd);
return NULL;
}
free (cmd);
while ((r = input_to_nul (fp, str, PATH_MAX)) > 0) {
if (verbose)
printf ("find string: %s\n", str);
len = strlen (str);
if (len <= sysrootdirlen)
continue;
/* Remove the directory part of the path when adding it. */
if (add_string (&res, &size, &alloc, str + sysrootdirlen) == -1) {
pclose (fp);
return NULL;
}
}
if (pclose (fp) != 0) {
reply_with_perror ("pclose: find");
free_stringslen (res, size);
return NULL;
}
if (r == -1) {
free_stringslen (res, size);
return NULL;
}
if (add_string (&res, &size, &alloc, NULL) == -1)
return NULL;
sort_strings (res, size-1);
return res; /* caller frees */
}
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