#define _BSD_SOURCE /* for daemon(3) */
#ifdef HAVE_WINDOWS_H
-#include <windows.h>
+# include <windows.h>
#endif
#include <stdio.h>
#include <netdb.h>
#include <sys/select.h>
#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
#ifdef HAVE_PRINTF_H
-#include <printf.h>
#endif
+#include "sockets.h"
#include "c-ctype.h"
#include "ignore-value.h"
+#include "error.h"
#include "daemon.h"
static char *read_cmdline (void);
-/* Also in guestfs.c */
-#define GUESTFWD_ADDR "10.0.2.4"
-#define GUESTFWD_PORT "6666"
+/* This is the default address we connect to for very old libraries
+ * which didn't specify the address and port number explicitly on the
+ * kernel command line. It's now recommended to always specify the
+ * address and port number on the command line, so this will not be
+ * used any more.
+ */
+#define OLD_GUESTFWD_ADDR "10.0.2.4"
+#define OLD_GUESTFWD_PORT "6666"
/* This is only a hint. If not defined, ignore it. */
#ifndef AI_ADDRCONFIG
-#define AI_ADDRCONFIG 0
+# define AI_ADDRCONFIG 0
#endif
#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
+# define MAX(a,b) ((a)>(b)?(a):(b))
#endif
int verbose = 0;
#endif
#endif
+#ifdef WIN32
+static int
+daemon (int nochdir, int noclose)
+{
+ fprintf (stderr,
+ "On Windows the daemon does not support forking into the "
+ "background.\nYou *must* run the daemon with the -f option.\n");
+ exit (EXIT_FAILURE);
+}
+#endif /* WIN32 */
+
+#ifdef WIN32
+static int
+winsock_init (void)
+{
+ int r;
+
+ /* http://msdn2.microsoft.com/en-us/library/ms742213.aspx */
+ r = gl_sockets_startup (SOCKETS_2_2);
+ return r == 0 ? 0 : -1;
+}
+#else /* !WIN32 */
+static int
+winsock_init (void)
+{
+ return 0;
+}
+#endif /* !WIN32 */
+
/* Location to mount root device. */
const char *sysroot = "/sysroot"; /* No trailing slash. */
int sysroot_len = 8;
+/* Not used explicitly, but required by the gnulib 'error' module. */
+const char *program_name = "guestfsd";
+
static void
usage (void)
{
char *cmdline;
char *vmchannel = NULL;
+ if (winsock_init () == -1)
+ error (EXIT_FAILURE, 0, "winsock initialization failed");
+
#ifdef HAVE_REGISTER_PRINTF_SPECIFIER
/* http://udrepper.livejournal.com/20948.html */
register_printf_specifier ('Q', print_shell_quote, print_arginfo);
#endif
#ifdef WIN32
-#define setenv(n,v,f) _putenv(n "=" v)
+# define setenv(n,v,f) _putenv(n "=" v)
#endif
/* Set up a basic environment. After we are called by /init the
* environment is essentially empty.
* https://bugzilla.redhat.com/show_bug.cgi?id=502074#c5
+ *
+ * NOTE: if you change $PATH, you must also change 'prog_exists'
+ * function below.
*/
- setenv ("PATH", "/usr/bin:/bin", 1);
+ setenv ("PATH", "/sbin:/usr/sbin:/bin:/usr/bin", 1);
setenv ("SHELL", "/bin/sh", 1);
setenv ("LC_ALL", "C", 1);
+ setenv ("TERM", "dumb", 1);
#ifndef WIN32
/* We document that umask defaults to 022 (it should be this anyway). */
/* Default vmchannel. */
if (vmchannel == NULL) {
- vmchannel = strdup ("tcp:" GUESTFWD_ADDR ":" GUESTFWD_PORT);
+ vmchannel = strdup ("tcp:" OLD_GUESTFWD_ADDR ":" OLD_GUESTFWD_PORT);
if (!vmchannel) {
perror ("strdup");
exit (EXIT_FAILURE);
/* Fork into the background. */
if (!dont_fork) {
-#ifndef WIN32
if (daemon (0, 1) == -1) {
perror ("daemon");
exit (EXIT_FAILURE);
}
-#else /* WIN32 */
- fprintf (stderr, "On Windows the daemon does not support forking into the background.\nYou *must* run the daemon with the -f option.\n");
- exit (EXIT_FAILURE);
-#endif /* WIN32 */
}
/* Enter the main loop, reading and performing actions. */
return lines;
}
+/* Skip leading and trailing whitespace, updating the original string
+ * in-place.
+ */
+void
+trim (char *str)
+{
+ size_t len = strlen (str);
+
+ while (len > 0 && c_isspace (str[len-1])) {
+ str[len-1] = '\0';
+ len--;
+ }
+
+ const char *p = str;
+ while (*p && c_isspace (*p)) {
+ p++;
+ len--;
+ }
+
+ memmove (str, p, len+1);
+}
+
/* printf helper function so we can use %Q ("quoted") and %R to print
* shell-quoted strings. See HACKING file for more details.
*/
* the device nodes themselves will exist in the appliance.
*/
int
-device_name_translation (char *device, const char *func)
+device_name_translation (char *device)
{
int fd;
fd = open (device, O_RDONLY);
if (fd >= 0) {
+ close_ok:
close (fd);
return 0;
}
- if (errno != ENXIO && errno != ENOENT) {
- error:
- reply_with_perror ("%s: %s", func, device);
+ if (errno != ENXIO && errno != ENOENT)
return -1;
- }
/* If the name begins with "/dev/sd" then try the alternatives. */
if (STRNEQLEN (device, "/dev/sd", 7))
- goto error;
+ return -1;
device[5] = 'h'; /* /dev/hd (old IDE driver) */
fd = open (device, O_RDONLY);
- if (fd >= 0) {
- close (fd);
- return 0;
- }
+ if (fd >= 0)
+ goto close_ok;
device[5] = 'v'; /* /dev/vd (for virtio devices) */
fd = open (device, O_RDONLY);
- if (fd >= 0) {
- close (fd);
- return 0;
- }
+ if (fd >= 0)
+ goto close_ok;
device[5] = 's'; /* Restore original device name. */
- goto error;
+ return -1;
+}
+
+/* Check program exists and is executable on $PATH. Actually, we
+ * just assume PATH contains the default entries (see main() above).
+ */
+int
+prog_exists (const char *prog)
+{
+ static const char * const dirs[] =
+ { "/sbin", "/usr/sbin", "/bin", "/usr/bin" };
+ size_t i;
+ char buf[1024];
+
+ for (i = 0; i < sizeof dirs / sizeof dirs[0]; ++i) {
+ snprintf (buf, sizeof buf, "%s/%s", dirs[i], prog);
+ if (access (buf, X_OK) == 0)
+ return 1;
+ }
+ return 0;
}
/* LVM and other commands aren't synchronous, especially when udev is
* involved. eg. You can create or remove some device, but the /dev
* device node won't appear until some time later. This means that
* you get an error if you run one command followed by another.
+ *
* Use 'udevadm settle' after certain commands, but don't be too
* fussed if it fails.
+ *
+ * 'udevsettle' was the old name for this command (RHEL 5). This was
+ * deprecated in favour of 'udevadm settle'. The old 'udevsettle'
+ * command was left as a symlink. Then in Fedora 13 the old symlink
+ * remained but it stopped working (RHBZ#548121), so we have to be
+ * careful not to assume that we can use 'udevsettle' if it exists.
*/
void
udev_settle (void)
{
- static int which_prog = 0;
-
- if (which_prog == 0) {
- if (access ("/sbin/udevsettle", X_OK) == 0)
- which_prog = 2;
- else if (access ("/sbin/udevadm", X_OK) == 0)
- which_prog = 1;
- else
- which_prog = 3;
- }
-
- switch (which_prog) {
- case 1:
- command (NULL, NULL, "/sbin/udevadm", "settle", NULL);
- break;
- case 2:
- command (NULL, NULL, "/sbin/udevsettle", NULL);
- break;
- default:
- ;
- }
+ (void) command (NULL, NULL, "udevadm", "settle", NULL);
+ (void) command (NULL, NULL, "udevsettle", NULL);
}
git.annexia.org / libguestfs.git / blobdiff