mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
0f2e9c84e9
%Q => simple shell quoted string %R => path will be prefixed by /sysroot eg. snprintf (cmd, sizeof cmd, "cat %R", path); system (cmd);
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2009 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include "../src/guestfs_protocol.h"
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#include "daemon.h"
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#include "actions.h"
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static int
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input_to_nul (FILE *fp, char *buf, int maxlen)
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{
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int i = 0, c;
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while (i < maxlen) {
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c = fgetc (fp);
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if (c == EOF)
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return 0;
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buf[i++] = c;
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if (c == '\0')
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return i;
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}
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reply_with_error ("input_to_nul: input string too long");
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return -1;
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}
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char **
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do_find (char *dir)
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{
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struct stat statbuf;
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int r, len, sysrootdirlen;
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char *cmd;
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FILE *fp;
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char **res = NULL;
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int size = 0, alloc = 0;
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char *sysrootdir;
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char str[PATH_MAX];
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NEED_ROOT (NULL);
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ABS_PATH (dir, NULL);
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sysrootdir = sysroot_path (dir);
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if (!sysrootdir) {
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reply_with_perror ("malloc");
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return NULL;
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}
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r = stat (sysrootdir, &statbuf);
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if (r == -1) {
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reply_with_perror ("%s", dir);
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free (sysrootdir);
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return NULL;
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}
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if (!S_ISDIR (statbuf.st_mode)) {
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reply_with_error ("%s: not a directory", dir);
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free (sysrootdir);
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return NULL;
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}
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sysrootdirlen = strlen (sysrootdir);
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/* Assemble the external find command. */
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if (asprintf_nowarn (&cmd, "find %Q -print0", sysrootdir) == -1) {
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reply_with_perror ("malloc");
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free (sysrootdir);
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return NULL;
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}
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if (verbose)
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fprintf (stderr, "%s\n", cmd);
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fp = popen (cmd, "r");
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if (fp == NULL) {
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reply_with_perror ("%s", cmd);
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free (cmd);
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return NULL;
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}
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free (cmd);
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while ((r = input_to_nul (fp, str, PATH_MAX)) > 0) {
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if (verbose)
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printf ("find string: %s\n", str);
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len = strlen (str);
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if (len <= sysrootdirlen)
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continue;
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/* Remove the directory part of the path when adding it. */
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if (add_string (&res, &size, &alloc, str + sysrootdirlen) == -1) {
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pclose (fp);
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return NULL;
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}
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}
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if (pclose (fp) != 0) {
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reply_with_perror ("pclose: find");
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free_stringslen (res, size);
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return NULL;
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}
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if (r == -1) {
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free_stringslen (res, size);
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return NULL;
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}
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if (add_string (&res, &size, &alloc, NULL) == -1)
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return NULL;
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sort_strings (res, size-1);
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return res; /* caller frees */
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}
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