}
/* Resolve the special "win:..." form for Windows-specific paths. The
- * generated code calls this for all device or path arguments. The
- * function must return a newly allocated string (caller frees) or
- * display an error and return NULL.
+ * generated code calls this for all device or path arguments.
+ *
+ * The function returns a newly allocated string, and the caller must
+ * free this string; else display an error and return NULL.
*/
+static char *win_prefix_drive_letter (char drive_letter, const char *path);
+
char *
win_prefix (const char *path)
{
path += 4;
- /* Is there a drive letter? */
+ /* If there is a drive letter, rewrite the path. */
if (c_isalpha (path[0]) && path[1] == ':') {
- char drive_letter;
- char **roots, **drives, **mountpoints, *device;
- size_t i;
-
- drive_letter = c_tolower (path[0]);
- path += 2;
-
- /* Resolve the drive letter using the drive mappings table. */
- roots = guestfs_inspect_get_roots (g);
- if (roots == NULL)
+ char drive_letter = c_tolower (path[0]);
+ /* This returns the newly allocated string. */
+ ret = win_prefix_drive_letter (drive_letter, path + 2);
+ if (ret == NULL)
return NULL;
- if (roots[0] == NULL) {
- fprintf (stderr, _("%s: to use Windows drive letters, you must inspect the guest (\"-i\" option or run \"inspect-os\" command)\n"),
- program_name);
- free_strings (roots);
+ }
+ else if (!*path) {
+ ret = strdup ("/");
+ if (ret == NULL) {
+ perror ("strdup");
return NULL;
}
- drives = guestfs_inspect_get_drive_mappings (g, roots[0]);
- if (drives == NULL || drives[0] == NULL) {
- fprintf (stderr, _("%s: to use Windows drive letters, this must be a Windows guest\n"),
- program_name);
- free_strings (roots);
- free_strings (drives);
+ }
+ else {
+ ret = strdup (path);
+ if (ret == NULL) {
+ perror ("strdup");
return NULL;
}
+ }
- device = NULL;
- for (i = 0; drives[i] != NULL; i += 2) {
- if (c_tolower (drives[i][0]) == drive_letter && drives[i][1] == '\0') {
- device = drives[i+1];
- break;
- }
- }
+ /* Blindly convert any backslashes into forward slashes. Is this good? */
+ for (i = 0; i < strlen (ret); ++i)
+ if (ret[i] == '\\')
+ ret[i] = '/';
- if (device == NULL) {
- fprintf (stderr, _("%s: drive '%c:' not found. To list available drives do:\n inspect-get-drive-mappings %s\n"),
- program_name, drive_letter, roots[0]);
- free_strings (roots);
- free_strings (drives);
- return NULL;
- }
+ char *t = guestfs_case_sensitive_path (g, ret);
+ free (ret);
+ ret = t;
- /* This drive letter must be mounted on / (we won't do it). */
- mountpoints = guestfs_mountpoints (g);
- if (mountpoints == NULL) {
- free_strings (roots);
- free_strings (drives);
- return NULL;
- }
+ return ret;
+}
- for (i = 0; mountpoints[i] != NULL; i += 2) {
- if (STREQ (mountpoints[i+1], "/")) {
- if (STRNEQ (mountpoints[i], device)) {
- fprintf (stderr, _("%s: to access '%c:', mount %s on / first. One way to do this is:\n umount-all\n mount %s /\n"),
- program_name, drive_letter, device, device);
- free_strings (roots);
- free_strings (drives);
- free_strings (mountpoints);
- return NULL;
- }
- }
+static char *
+win_prefix_drive_letter (char drive_letter, const char *path)
+{
+ char **roots = NULL;
+ char **drives = NULL;
+ char **mountpoints = NULL;
+ char *device, *mountpoint, *ret = NULL;
+ size_t i;
+
+ /* Resolve the drive letter using the drive mappings table. */
+ roots = guestfs_inspect_get_roots (g);
+ if (roots == NULL)
+ goto out;
+ if (roots[0] == NULL) {
+ fprintf (stderr, _("%s: to use Windows drive letters, you must inspect the guest (\"-i\" option or run \"inspect-os\" command)\n"),
+ program_name);
+ goto out;
+ }
+ drives = guestfs_inspect_get_drive_mappings (g, roots[0]);
+ if (drives == NULL || drives[0] == NULL) {
+ fprintf (stderr, _("%s: to use Windows drive letters, this must be a Windows guest\n"),
+ program_name);
+ goto out;
+ }
+
+ device = NULL;
+ for (i = 0; drives[i] != NULL; i += 2) {
+ if (c_tolower (drives[i][0]) == drive_letter && drives[i][1] == '\0') {
+ device = drives[i+1];
+ break;
}
+ }
- free_strings (roots);
- free_strings (drives);
- free_strings (mountpoints);
+ if (device == NULL) {
+ fprintf (stderr, _("%s: drive '%c:' not found. To list available drives do:\n inspect-get-drive-mappings %s\n"),
+ program_name, drive_letter, roots[0]);
+ goto out;
}
- if (!*path) {
- ret = strdup ("/");
- if (ret == NULL)
- perror ("strdup");
- return ret;
+ /* This drive letter must be mounted somewhere (we won't do it). */
+ mountpoints = guestfs_mountpoints (g);
+ if (mountpoints == NULL)
+ goto out;
+
+ mountpoint = NULL;
+ for (i = 0; mountpoints[i] != NULL; i += 2) {
+ if (STREQ (mountpoints[i], device)) {
+ mountpoint = mountpoints[i+1];
+ break;
+ }
}
- ret = strdup (path);
- if (ret == NULL) {
- perror ("strdup");
- return NULL;
+ if (mountpoint == NULL) {
+ fprintf (stderr, _("%s: to access '%c:', mount %s first. One way to do this is:\n umount-all\n mount %s /\n"),
+ program_name, drive_letter, device, device);
+ goto out;
}
- /* Blindly convert any backslashes into forward slashes. Is this good? */
- for (i = 0; i < strlen (ret); ++i)
- if (ret[i] == '\\')
- ret[i] = '/';
+ /* Rewrite the path, eg. if C: => /c then C:/foo => /c/foo */
+ if (asprintf (&ret, "%s%s%s",
+ mountpoint, STRNEQ (mountpoint, "/") ? "/" : "", path) == -1) {
+ perror ("asprintf");
+ goto out;
+ }
- char *t = guestfs_case_sensitive_path (g, ret);
- free (ret);
- ret = t;
+ out:
+ if (roots)
+ free_strings (roots);
+ if (drives)
+ free_strings (drives);
+ if (mountpoints)
+ free_strings (mountpoints);
return ret;
}
git.annexia.org / libguestfs.git / blobdiff