#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
-#include <inttypes.h>
#include <assert.h>
#ifdef HAVE_LIBREADLINE
static void script (int prompt);
static void cmdline (char *argv[], int optind, int argc);
static int issue_command (const char *cmd, char *argv[]);
-static int parse_size (const char *str, off_t *size_rtn);
static void initialize_readline (void);
static void cleanup_readline (void);
static void add_history_line (const char *);
/* If developing, add . to the path. Note that libtools interferes
* with this because uninstalled guestfish is a shell script that runs
* the real program with an absolute path. Detect that too.
+ *
+ * BUT if LIBGUESTFS_PATH environment variable is already set by
+ * the user, then don't override it.
*/
- if (argv[0] &&
+ if (getenv ("LIBGUESTFS_PATH") == NULL &&
+ argv[0] &&
(argv[0][0] != '/' || strstr (argv[0], "/.libs/lt-") != NULL))
guestfs_set_path (g, ".:" GUESTFS_DEFAULT_PATH);
goto next_command;
}
p[len] = '\0';
- pend = &p[len+2];
+ pend = p[len+1] ? &p[len+2] : &p[len+1];
} else if (*p == '\'') {
p++;
len = strcspn (p, "'");
goto next_command;
}
p[len] = '\0';
- pend = &p[len+2];
+ pend = p[len+1] ? &p[len+2] : &p[len+1];
/*
} else if (*p == '[') {
int c = 1;
return 0;
}
else if (strcasecmp (cmd, "alloc") == 0 ||
- strcasecmp (cmd, "allocate") == 0) {
- if (argc != 2) {
- fprintf (stderr, "use 'alloc file size' to create an image\n");
- return -1;
- }
- else {
- off_t size;
- int fd;
-
- if (parse_size (argv[1], &size) == -1)
- return -1;
-
- if (g_launched) {
- fprintf (stderr, "can't allocate or add disks after launching\n");
- return -1;
- }
-
- fd = open (argv[0], O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK|O_TRUNC, 0666);
- if (fd == -1) {
- perror (argv[0]);
- return -1;
- }
-
- if (posix_fallocate (fd, 0, size) == -1) {
- perror ("fallocate");
- close (fd);
- unlink (argv[0]);
- return -1;
- }
-
- if (close (fd) == -1) {
- perror (argv[0]);
- unlink (argv[0]);
- return -1;
- }
-
- if (guestfs_add_drive (g, argv[0]) == -1) {
- unlink (argv[0]);
- return -1;
- }
-
- return 0;
- }
- }
+ strcasecmp (cmd, "allocate") == 0)
+ return do_alloc (cmd, argc, argv);
+ else if (strcasecmp (cmd, "edit") == 0 ||
+ strcasecmp (cmd, "vi") == 0 ||
+ strcasecmp (cmd, "emacs") == 0)
+ return do_edit (cmd, argc, argv);
else
return run_action (cmd, argc, argv);
}
printf ("%-20s %s\n",
"alloc", "allocate an image");
+ printf ("%-20s %s\n",
+ "edit", "edit a file in the image");
/* actions are printed after this (see list_commands) */
}
{
/* help for actions is auto-generated, see display_command */
- if (strcasecmp (cmd, "alloc") == 0)
+ if (strcasecmp (cmd, "alloc") == 0 ||
+ strcasecmp (cmd, "allocate") == 0)
printf ("alloc - allocate an image\n"
" alloc <filename> <size>\n"
"\n"
" <nn>M or <nn>MB number of megabytes\n"
" <nn>G or <nn>GB number of gigabytes\n"
" <nn>sects number of 512 byte sectors\n");
+ else if (strcasecmp (cmd, "edit") == 0 ||
+ strcasecmp (cmd, "vi") == 0 ||
+ strcasecmp (cmd, "emacs") == 0)
+ printf ("edit - edit a file in the image\n"
+ " edit <filename>\n"
+ "\n"
+ " This is used to edit a file.\n"
+ "\n"
+ " It is the equivalent of (and is implemented by)\n"
+ " running \"cat\", editing locally, and then \"write-file\".\n"
+ "\n"
+ " Normally it uses $EDITOR, but if you use the aliases\n"
+ " \"vi\" or \"emacs\" you will get those editors.\n"
+ "\n"
+ " NOTE: This will not work reliably for large files\n"
+ " (> 2 MB) or binary files containing \\0 bytes.\n");
else if (strcasecmp (cmd, "help") == 0)
printf ("help - display a list of commands or help on a command\n"
" help cmd\n"
" help\n");
- else if (strcasecmp (cmd, "quit") == 0)
+ else if (strcasecmp (cmd, "quit") == 0 ||
+ strcasecmp (cmd, "exit") == 0 ||
+ strcasecmp (cmd, "q") == 0)
printf ("quit - quit guestfish\n"
" quit\n");
else
cmd);
}
-/* Parse size parameter of alloc command. */
-static int
-parse_size (const char *str, off_t *size_rtn)
-{
- uint64_t size;
- char type;
-
- /* Note that the parsing here is looser than what is specified in the
- * help, but we may tighten it up in future so beware.
- */
- if (sscanf (str, "%"SCNu64"%c", &size, &type) == 2) {
- switch (type) {
- case 'k': case 'K': size *= 1024; break;
- case 'm': case 'M': size *= 1024 * 1024; break;
- case 'g': case 'G': size *= 1024 * 1024 * 1024; break;
- case 's': size *= 512; break;
- default:
- fprintf (stderr, "could not parse size specification '%s'\n", str);
- return -1;
- }
- }
- else if (sscanf (str, "%"SCNu64, &size) == 1)
- size *= 1024;
- else {
- fprintf (stderr, "could not parse size specification '%s'\n", str);
- return -1;
- }
-
- /* XXX 32 bit file offsets, if anyone uses them? GCC should give
- * a warning here anyhow.
- */
- *size_rtn = size;
-
- return 0;
-}
-
void
free_strings (char **argv)
{
printf ("%s\n", argv[argc]);
}
+void
+print_table (char * const * const argv)
+{
+ int i;
+
+ for (i = 0; argv[i] != NULL; i += 2)
+ printf ("%s: %s\n", argv[i], argv[i+1]);
+}
+
int
is_true (const char *str)
{