1 /* guestfish - the filesystem interactive shell
2 * Copyright (C) 2009-2010 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <sys/types.h>
34 #ifdef HAVE_LIBREADLINE
35 #include <readline/readline.h>
36 #include <readline/history.h>
48 static void set_up_terminal (void);
49 static void prepare_drives (struct drv *drv);
50 static int launch (void);
51 static void interactive (void);
52 static void shell_script (void);
53 static void script (int prompt);
54 static void cmdline (char *argv[], int optind, int argc);
55 static void initialize_readline (void);
56 static void cleanup_readline (void);
57 #ifdef HAVE_LIBREADLINE
58 static void add_history_line (const char *);
61 static int override_progress_bars = -1;
63 /* Currently open libguestfs handle. */
69 int remote_control_listen = 0;
70 int remote_control_csh = 0;
71 int remote_control = 0;
72 int exit_on_error = 1;
74 int keys_from_stdin = 0;
76 const char *libvirt_uri = NULL;
79 int have_terminfo = 0;
80 int progress_bars = 0;
82 static void __attribute__((noreturn))
85 if (status != EXIT_SUCCESS)
86 fprintf (stderr, _("Try `%s --help' for more information.\n"),
90 _("%s: guest filesystem shell\n"
91 "%s lets you edit virtual machine filesystems\n"
92 "Copyright (C) 2009-2010 Red Hat Inc.\n"
94 " %s [--options] cmd [: cmd : cmd ...]\n"
95 " %s [--ro] -i -a disk-image\n"
96 " %s [--ro] -i -d libvirt-domain\n"
97 "or for interactive use:\n"
99 "or from a shell script:\n"
105 " -h|--cmd-help List available commands\n"
106 " -h|--cmd-help cmd Display detailed help on 'cmd'\n"
107 " -a|--add image Add image\n"
108 " -c|--connect uri Specify libvirt URI for -d option\n"
109 " --csh Make --listen csh-compatible\n"
110 " -d|--domain guest Add disks from libvirt guest\n"
111 " -D|--no-dest-paths Don't tab-complete paths from guest fs\n"
112 " --echo-keys Don't turn off echo for passphrases\n"
113 " -f|--file file Read commands from file\n"
114 " --format[=raw|..] Force disk format for -a option\n"
115 " -i|--inspector Automatically mount filesystems\n"
116 " --keys-from-stdin Read passphrases from stdin\n"
117 " --listen Listen for remote commands\n"
118 " -m|--mount dev[:mnt] Mount dev on mnt (if omitted, /)\n"
119 " -n|--no-sync Don't autosync\n"
120 " -N|--new type Create prepared disk (test1.img, ...)\n"
121 " --progress-bars Enable progress bars even when not interactive\n"
122 " --no-progress-bars Disable progress bars\n"
123 " --remote[=pid] Send commands to remote %s\n"
124 " -r|--ro Mount read-only\n"
125 " --selinux Enable SELinux support\n"
126 " -v|--verbose Verbose messages\n"
127 " -V|--version Display version and exit\n"
128 " -x Echo each command before executing it\n"
129 "For more information, see the manpage %s(1).\n"),
130 program_name, program_name, program_name,
131 program_name, program_name, program_name,
132 program_name, program_name, program_name);
138 main (int argc, char *argv[])
140 /* Set global program name that is not polluted with libtool artifacts. */
141 set_program_name (argv[0]);
143 atexit (close_stdout);
145 setlocale (LC_ALL, "");
146 bindtextdomain (PACKAGE, LOCALEBASEDIR);
147 textdomain (PACKAGE);
151 enum { HELP_OPTION = CHAR_MAX + 1 };
153 static const char *options = "a:c:d:Df:h::im:nN:rv?Vwx";
154 static const struct option long_options[] = {
155 { "add", 1, 0, 'a' },
156 { "cmd-help", 2, 0, 'h' },
157 { "connect", 1, 0, 'c' },
159 { "domain", 1, 0, 'd' },
160 { "echo-keys", 0, 0, 0 },
161 { "file", 1, 0, 'f' },
162 { "format", 2, 0, 0 },
163 { "help", 0, 0, HELP_OPTION },
164 { "inspector", 0, 0, 'i' },
165 { "keys-from-stdin", 0, 0, 0 },
166 { "listen", 0, 0, 0 },
167 { "mount", 1, 0, 'm' },
168 { "new", 1, 0, 'N' },
169 { "no-dest-paths", 0, 0, 'D' },
170 { "no-sync", 0, 0, 'n' },
171 { "progress-bars", 0, 0, 0 },
172 { "no-progress-bars", 0, 0, 0 },
173 { "remote", 2, 0, 0 },
176 { "selinux", 0, 0, 0 },
177 { "verbose", 0, 0, 'v' },
178 { "version", 0, 0, 'V' },
181 struct drv *drvs = NULL;
183 struct mp *mps = NULL;
185 char *p, *file = NULL;
186 const char *format = NULL;
190 int next_prepared_drive = 1;
192 initialize_readline ();
194 memset (&sa, 0, sizeof sa);
195 sa.sa_handler = SIG_IGN;
196 sa.sa_flags = SA_RESTART;
197 sigaction (SIGPIPE, &sa, NULL);
199 /* guestfs_create is meant to be a lightweight operation, so
200 * it's OK to do it early here.
202 g = guestfs_create ();
204 fprintf (stderr, _("guestfs_create: failed to create handle\n"));
208 /* If developing, add ./appliance to the path. Note that libtools
209 * interferes with this because uninstalled guestfish is a shell
210 * script that runs the real program with an absolute path. Detect
213 * BUT if LIBGUESTFS_PATH environment variable is already set by
214 * the user, then don't override it.
216 if (getenv ("LIBGUESTFS_PATH") == NULL &&
218 (argv[0][0] != '/' || strstr (argv[0], "/.libs/lt-") != NULL))
219 guestfs_set_path (g, "appliance:" GUESTFS_DEFAULT_PATH);
221 /* CAUTION: we are careful to modify argv[0] here, only after
222 * using it just above.
224 * getopt_long uses argv[0], so give it the sanitized name. Save a copy
225 * of the original, in case it's needed below.
227 char *real_argv0 = argv[0];
228 argv[0] = bad_cast (program_name);
231 c = getopt_long (argc, argv, options, long_options, &option_index);
235 case 0: /* options which are long only */
236 if (STREQ (long_options[option_index].name, "listen"))
237 remote_control_listen = 1;
238 else if (STREQ (long_options[option_index].name, "remote")) {
240 if (sscanf (optarg, "%d", &remote_control) != 1) {
241 fprintf (stderr, _("%s: --listen=PID: PID was not a number: %s\n"),
242 program_name, optarg);
246 p = getenv ("GUESTFISH_PID");
247 if (!p || sscanf (p, "%d", &remote_control) != 1) {
248 fprintf (stderr, _("%s: remote: $GUESTFISH_PID must be set"
249 " to the PID of the remote process\n"),
254 } else if (STREQ (long_options[option_index].name, "selinux")) {
255 guestfs_set_selinux (g, 1);
256 } else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
258 } else if (STREQ (long_options[option_index].name, "progress-bars")) {
259 override_progress_bars = 1;
260 } else if (STREQ (long_options[option_index].name, "no-progress-bars")) {
261 override_progress_bars = 0;
262 } else if (STREQ (long_options[option_index].name, "echo-keys")) {
264 } else if (STREQ (long_options[option_index].name, "format")) {
265 if (!optarg || STREQ (optarg, ""))
269 } else if (STREQ (long_options[option_index].name, "csh")) {
270 remote_control_csh = 1;
272 fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
273 program_name, long_options[option_index].name, option_index);
291 complete_dest_paths = 0;
296 fprintf (stderr, _("%s: only one -f parameter can be given\n"),
307 r = display_command (optarg);
308 else if (argv[optind] && argv[optind][0] != '-')
309 r = display_command (argv[optind++]);
313 exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
329 if (STRCASEEQ (optarg, "list") ||
330 STRCASEEQ (optarg, "help") ||
331 STRCASEEQ (optarg, "h") ||
332 STRCASEEQ (optarg, "?")) {
333 list_prepared_drives ();
336 drv = malloc (sizeof (struct drv));
344 if (asprintf (&drv->N.filename, "test%d.img",
345 next_prepared_drive++) == -1) {
349 drv->N.data = create_prepared_file (optarg, drv->N.filename);
350 drv->N.data_free = free_prep_data;
376 usage (EXIT_SUCCESS);
379 usage (EXIT_FAILURE);
383 /* Old-style -i syntax? Since -a/-d/-N and -i was disallowed
384 * previously, if we have -i without any drives but with something
385 * on the command line, it must be old-style syntax.
387 if (inspector && drvs == NULL && optind < argc) {
388 while (optind < argc) {
389 if (strchr (argv[optind], '/') ||
390 access (argv[optind], F_OK) == 0) { /* simulate -a option */
391 drv = malloc (sizeof (struct drv));
397 drv->a.filename = argv[optind];
398 drv->a.format = NULL;
401 } else { /* simulate -d option */
402 drv = malloc (sizeof (struct drv));
408 drv->d.guest = argv[optind];
417 /* If we've got drives to add, add them now. */
418 add_drives (drvs, 'a');
420 /* If we've got mountpoints or prepared drives or -i option, we must
421 * launch the guest and mount them.
423 if (next_prepared_drive > 1 || mps != NULL || inspector) {
424 /* RHBZ#612178: If --listen flag is given, then we will fork into
425 * the background in rc_listen(). However you can't do this while
426 * holding a libguestfs handle open because the recovery process
427 * will think the main program has died and kill qemu. Therefore
428 * don't use the recovery process for this case. (A better
429 * solution would be to call launch () etc after the fork, but
430 * that greatly complicates the code here).
432 if (remote_control_listen)
433 guestfs_set_recovery_proc (g, 0);
435 if (launch () == -1) exit (EXIT_FAILURE);
440 prepare_drives (drvs);
444 /* Free up data structures, no longer needed after this point. */
448 /* Remote control? */
449 if (remote_control_listen && remote_control) {
451 _("%s: cannot use --listen and --remote options at the same time\n"),
456 if (remote_control_listen) {
459 _("%s: extra parameters on the command line with --listen flag\n"),
465 _("%s: cannot use --listen and --file options at the same time\n"),
472 /* -f (file) parameter? */
475 if (open (file, O_RDONLY) == -1) {
481 /* Decide if we display progress bars. */
483 override_progress_bars >= 0
484 ? override_progress_bars
485 : (optind >= argc && isatty (0));
488 guestfs_set_progress_callback (g, progress_callback, NULL);
490 /* Interactive, shell script, or command(s) on the command line? */
491 if (optind >= argc) {
498 cmdline (argv, optind, argc);
505 /* The <term.h> header file which defines this has "issues". */
506 extern int tgetent (char *, const char *);
509 set_up_terminal (void)
511 /* http://www.cl.cam.ac.uk/~mgk25/unicode.html#activate */
512 utf8_mode = STREQ (nl_langinfo (CODESET), "UTF-8");
514 char *term = getenv ("TERM");
516 //fprintf (stderr, _("guestfish: TERM (terminal type) not defined.\n"));
520 int r = tgetent (NULL, term);
522 fprintf (stderr, _("guestfish: could not access termcap or terminfo database.\n"));
526 fprintf (stderr, _("guestfish: terminal type \"%s\" not defined.\n"),
535 pod2text (const char *name, const char *shortdesc, const char *str)
539 fp = popen ("pod2text", "w");
541 /* pod2text failed, maybe not found, so let's just print the
542 * source instead, since that's better than doing nothing.
544 printf ("%s - %s\n\n%s\n", name, shortdesc, str);
547 fprintf (fp, "=head1 NAME\n\n%s - %s\n\n", name, shortdesc);
553 prepare_drives (struct drv *drv)
556 prepare_drives (drv->next);
557 if (drv->type == drv_N)
558 prepare_drive (drv->N.filename, drv->N.data, drv->device);
565 if (guestfs_is_config (g)) {
566 if (guestfs_launch (g) == -1)
584 #define FISH "><fs> "
586 static char *line_read = NULL;
591 #ifdef HAVE_LIBREADLINE
599 line_read = readline (prompt ? FISH : "");
601 if (line_read && *line_read)
602 add_history_line (line_read);
607 #endif /* HAVE_LIBREADLINE */
609 static char buf[8192];
612 if (prompt) printf (FISH);
613 line_read = fgets (buf, sizeof buf, stdin);
616 len = strlen (line_read);
617 if (len > 0 && buf[len-1] == '\n') buf[len-1] = '\0';
631 int global_exit_on_error = !prompt;
636 "Welcome to guestfish, the libguestfs filesystem interactive shell for\n"
637 "editing virtual machine filesystems.\n"
639 "Type: 'help' for help on commands\n"
640 " 'man' to read the manual\n"
641 " 'quit' to quit the shell\n"
645 print_inspect_prompt ();
653 exit_on_error = global_exit_on_error;
655 buf = rl_gets (prompt);
661 /* Skip any initial whitespace before the command. */
663 while (*buf && c_isspace (*buf))
668 /* If the next character is '#' then this is a comment. */
669 if (*buf == '#') continue;
671 /* If the next character is '!' then pass the whole lot to system(3). */
679 (WTERMSIG (r) == SIGINT || WTERMSIG (r) == SIGQUIT)) ||
680 WEXITSTATUS (r) != 0)
686 /* If the next character is '-' allow the command to fail without
687 * exiting on error (just for this one command though).
695 /* Get the command (cannot be quoted). */
696 len = strcspn (buf, " \t");
698 if (len == 0) continue;
702 if (buf[len] == '\0') {
709 p += strspn (p, " \t");
711 /* Get the parameters. */
712 while (*p && i < sizeof argv / sizeof argv[0]) {
715 /* Parameters which start with quotes or pipes are treated
716 * specially. Bare parameters are delimited by whitespace.
720 len = strcspn (p, "\"");
721 if (p[len] == '\0') {
722 fprintf (stderr, _("%s: unterminated double quote\n"), program_name);
723 if (exit_on_error) exit (EXIT_FAILURE);
726 if (p[len+1] && (p[len+1] != ' ' && p[len+1] != '\t')) {
728 _("%s: command arguments not separated by whitespace\n"),
730 if (exit_on_error) exit (EXIT_FAILURE);
734 pend = p[len+1] ? &p[len+2] : &p[len+1];
735 } else if (*p == '\'') {
737 len = strcspn (p, "'");
738 if (p[len] == '\0') {
739 fprintf (stderr, _("%s: unterminated single quote\n"), program_name);
740 if (exit_on_error) exit (EXIT_FAILURE);
743 if (p[len+1] && (p[len+1] != ' ' && p[len+1] != '\t')) {
745 _("%s: command arguments not separated by whitespace\n"),
747 if (exit_on_error) exit (EXIT_FAILURE);
751 pend = p[len+1] ? &p[len+2] : &p[len+1];
752 } else if (*p == '|') {
757 } else if (*p == '[') {
761 while (*pend && c != 0) {
762 if (*pend == '[') c++;
763 else if (*pend == ']') c--;
768 _("%s: unterminated \"[...]\" sequence\n"), program_name);
769 if (exit_on_error) exit (EXIT_FAILURE);
772 if (*pend && (*pend != ' ' && *pend != '\t')) {
774 _("%s: command arguments not separated by whitespace\n"),
776 if (exit_on_error) exit (EXIT_FAILURE);
781 } else if (*p != ' ' && *p != '\t') {
782 /* If the first character is a ~ then note that this parameter
783 * is a candidate for ~username expansion. NB this does not
784 * apply to quoted parameters.
786 tilde_candidate = *p == '~';
787 len = strcspn (p, " \t");
794 fprintf (stderr, _("%s: internal error parsing string at '%s'\n"),
799 if (!tilde_candidate)
802 argv[i] = try_tilde_expansion (p);
807 p += strspn (p, " \t");
810 if (i == sizeof argv / sizeof argv[0]) {
811 fprintf (stderr, _("%s: too many arguments\n"), program_name);
812 if (exit_on_error) exit (EXIT_FAILURE);
819 if (issue_command (cmd, argv, pipe) == -1) {
820 if (exit_on_error) exit (EXIT_FAILURE);
825 if (prompt) printf ("\n");
829 cmdline (char *argv[], int optind, int argc)
836 if (optind >= argc) return;
838 cmd = argv[optind++];
839 if (STREQ (cmd, ":")) {
840 fprintf (stderr, _("%s: empty command on command line\n"), program_name);
844 /* Allow -cmd on the command line to mean (temporarily) override
845 * the normal exit on error (RHBZ#578407).
852 params = &argv[optind];
854 /* Search for end of command list or ":" ... */
855 while (optind < argc && STRNEQ (argv[optind], ":"))
858 if (optind == argc) {
859 if (issue_command (cmd, params, NULL) == -1 && exit_on_error)
863 if (issue_command (cmd, params, NULL) == -1 && exit_on_error)
865 cmdline (argv, optind+1, argc);
870 issue_command (const char *cmd, char *argv[], const char *pipecmd)
873 int stdout_saved_fd = -1;
877 reset_progress_bar ();
879 /* This counts the commands issued, starting at 1. */
882 /* For | ... commands. Annoyingly we can't use popen(3) here. */
886 if (fflush (stdout) == EOF) {
887 perror ("failed to flush standard output");
891 perror ("pipe failed");
900 if (pid == 0) { /* Child process. */
902 if (dup2 (fd[0], 0) < 0) {
903 perror ("dup2 of stdin failed");
907 r = system (pipecmd);
912 _exit (WEXITSTATUS (r));
915 if ((stdout_saved_fd = dup (1)) < 0) {
916 perror ("failed to dup stdout");
920 if (dup2 (fd[1], 1) < 0) {
921 perror ("failed to dup stdout");
922 close (stdout_saved_fd);
928 for (argc = 0; argv[argc] != NULL; ++argc)
931 /* If --remote was set, then send this command to a remote process. */
933 r = rc_remote (remote_control, cmd, argc, argv, exit_on_error);
935 /* Otherwise execute it locally. */
936 else if (STRCASEEQ (cmd, "help")) {
941 r = display_command (argv[0]);
943 else if (STRCASEEQ (cmd, "quit") ||
944 STRCASEEQ (cmd, "exit") ||
945 STRCASEEQ (cmd, "q")) {
950 r = run_action (cmd, argc, argv);
952 /* Always flush stdout after every command, so that messages, results
953 * etc appear immediately.
955 if (fflush (stdout) == EOF) {
956 perror ("failed to flush standard output");
962 if (dup2 (stdout_saved_fd, 1) < 0) {
963 perror ("failed to dup2 standard output");
966 close (stdout_saved_fd);
967 if (waitpid (pid, NULL, 0) < 0) {
968 perror ("waiting for command to complete");
977 list_builtin_commands (void)
979 /* help and quit should appear at the top */
980 printf ("%-20s %s\n",
981 "help", _("display a list of commands or help on a command"));
982 printf ("%-20s %s\n",
983 "quit", _("quit guestfish"));
985 /* actions are printed after this (see list_commands) */
989 display_builtin_command (const char *cmd)
991 /* help for actions is auto-generated, see display_command */
993 if (STRCASEEQ (cmd, "help")) {
994 printf (_("help - display a list of commands or help on a command\n"
999 else if (STRCASEEQ (cmd, "quit") ||
1000 STRCASEEQ (cmd, "exit") ||
1001 STRCASEEQ (cmd, "q")) {
1002 printf (_("quit - quit guestfish\n"
1007 fprintf (stderr, _("%s: command not known, use -h to list all commands\n"),
1013 /* This is printed when the user types in an unknown command for the
1014 * first command issued. A common case is the user doing:
1015 * guestfish disk.img
1016 * expecting guestfish to open 'disk.img' (in fact, this tried to
1017 * run a command 'disk.img').
1020 extended_help_message (void)
1023 _("Did you mean to open a disk image? guestfish -a disk.img\n"
1024 "For a list of commands: guestfish -h\n"
1025 "For complete documentation: man guestfish\n"));
1029 free_strings (char **argv)
1033 for (argc = 0; argv[argc] != NULL; ++argc)
1039 count_strings (char *const *argv)
1043 for (c = 0; argv[c]; ++c)
1049 print_strings (char *const *argv)
1053 for (argc = 0; argv[argc] != NULL; ++argc)
1054 printf ("%s\n", argv[argc]);
1058 print_table (char *const *argv)
1062 for (i = 0; argv[i] != NULL; i += 2)
1063 printf ("%s: %s\n", argv[i], argv[i+1]);
1067 is_true (const char *str)
1070 STRCASENEQ (str, "0") &&
1071 STRCASENEQ (str, "f") &&
1072 STRCASENEQ (str, "false") &&
1073 STRCASENEQ (str, "n") &&
1074 STRCASENEQ (str, "no");
1077 /* Free strings from a non-NULL terminated char** */
1079 free_n_strings (char **str, size_t len)
1083 for (i = 0; i < len; i++) {
1090 parse_string_list (const char *str)
1093 size_t argv_len = 0;
1095 /* Current position pointer */
1096 const char *p = str;
1098 /* Token might be simple:
1101 * 'This is a single token'
1102 * or contain embedded single-quoted sections:
1103 * This' is a sing'l'e to'ken
1105 * The latter may seem over-complicated, but it's what a normal shell does.
1106 * Not doing it risks surprising somebody.
1108 * This outer loop is over complete tokens.
1114 /* Skip leading whitespace */
1115 p += strspn (p, " \t");
1119 /* This loop is over token 'fragments'. A token can be in multiple bits if
1120 * it contains single quotes. We also treat both sides of an escaped quote
1121 * as separate fragments because we can't just copy it: we have to remove
1124 while (*p && (!c_isblank (*p) || in_quote)) {
1125 const char *end = p;
1127 /* Check if the fragment starts with a quote */
1129 /* Toggle in_quote */
1130 in_quote = !in_quote;
1132 /* Skip the quote */
1136 /* If we're in a quote, look for an end quote */
1138 end += strcspn (end, "'");
1141 /* Otherwise, look for whitespace or a quote */
1143 end += strcspn (end, " \t'");
1146 /* Grow the token to accommodate the fragment */
1147 size_t tok_end = tok_len;
1149 char *tok_new = realloc (tok, tok_len + 1);
1150 if (NULL == tok_new) {
1152 free_n_strings (argv, argv_len);
1154 exit (EXIT_FAILURE);
1158 /* Check if we stopped on an escaped quote */
1159 if ('\'' == *end && end != p && *(end-1) == '\\') {
1160 /* Add everything before \' to the token */
1161 memcpy (&tok[tok_end], p, end - p - 1);
1164 tok[tok_len-1] = '\'';
1166 /* Already processed the quote */
1171 /* Add the whole fragment */
1172 memcpy (&tok[tok_end], p, end - p);
1178 /* We've reached the end of a token. We shouldn't still be in quotes. */
1180 fprintf (stderr, _("Runaway quote in string \"%s\"\n"), str);
1182 free_n_strings (argv, argv_len);
1187 /* Add this token if there is one. There might not be if there was
1188 * whitespace at the end of the input string */
1190 /* Add the NULL terminator */
1191 tok[tok_len] = '\0';
1193 /* Add the argument to the argument list */
1195 char **argv_new = realloc (argv, sizeof (*argv) * argv_len);
1196 if (NULL == argv_new) {
1198 free_n_strings (argv, argv_len-1);
1200 exit (EXIT_FAILURE);
1204 argv[argv_len-1] = tok;
1208 /* NULL terminate the argument list */
1210 char **argv_new = realloc (argv, sizeof (*argv) * argv_len);
1211 if (NULL == argv_new) {
1213 free_n_strings (argv, argv_len-1);
1214 exit (EXIT_FAILURE);
1218 argv[argv_len-1] = NULL;
1223 #ifdef HAVE_LIBREADLINE
1224 static char histfile[1024];
1225 static int nr_history_lines = 0;
1229 initialize_readline (void)
1231 #ifdef HAVE_LIBREADLINE
1234 home = getenv ("HOME");
1236 snprintf (histfile, sizeof histfile, "%s/.guestfish", home);
1238 (void) read_history (histfile);
1241 rl_readline_name = "guestfish";
1242 rl_attempted_completion_function = do_completion;
1244 /* Note that .inputrc (or /etc/inputrc) is not read until the first
1245 * call the readline(), which happens later. Therefore, these
1246 * provide default values which can be overridden by the user if
1249 (void) rl_variable_bind ("completion-ignore-case", "on");
1254 cleanup_readline (void)
1256 #ifdef HAVE_LIBREADLINE
1259 if (histfile[0] != '\0') {
1260 fd = open (histfile, O_WRONLY|O_CREAT, 0644);
1267 #ifdef HAVE_APPEND_HISTORY
1268 (void) append_history (nr_history_lines, histfile);
1270 (void) write_history (histfile);
1277 #ifdef HAVE_LIBREADLINE
1279 add_history_line (const char *line)
1287 xwrite (int fd, const void *v_buf, size_t len)
1290 const char *buf = v_buf;
1293 r = write (fd, buf, len);
1305 /* Resolve the special "win:..." form for Windows-specific paths.
1306 * This always returns a newly allocated string which is freed by the
1307 * caller function in "cmds.c".
1310 resolve_win_path (const char *path)
1315 if (STRCASENEQLEN (path, "win:", 4)) {
1316 ret = strdup (path);
1324 /* Drop drive letter, if it's "C:". */
1325 if (STRCASEEQLEN (path, "c:", 2))
1335 ret = strdup (path);
1341 /* Blindly convert any backslashes into forward slashes. Is this good? */
1342 for (i = 0; i < strlen (ret); ++i)
1346 char *t = guestfs_case_sensitive_path (g, ret);
1353 /* Resolve the special FileIn paths ("-" or "-<<END" or filename).
1354 * The caller (cmds.c) will call free_file_in after the command has
1355 * run which should clean up resources.
1357 static char *file_in_heredoc (const char *endmarker);
1358 static char *file_in_tmpfile = NULL;
1361 file_in (const char *arg)
1365 if (STREQ (arg, "-")) {
1366 ret = strdup ("/dev/stdin");
1372 else if (STRPREFIX (arg, "-<<")) {
1373 const char *endmarker = &arg[3];
1374 if (*endmarker == '\0') {
1375 fprintf (stderr, "%s: missing end marker in -<< expression\n",
1379 ret = file_in_heredoc (endmarker);
1395 file_in_heredoc (const char *endmarker)
1397 TMP_TEMPLATE_ON_STACK (template);
1398 file_in_tmpfile = strdup (template);
1399 if (file_in_tmpfile == NULL) {
1404 int fd = mkstemp (file_in_tmpfile);
1410 size_t markerlen = strlen (endmarker);
1412 char buffer[BUFSIZ];
1413 int write_error = 0;
1414 while (fgets (buffer, sizeof buffer, stdin) != NULL) {
1415 /* Look for "END"<EOF> or "END\n" in input. */
1416 size_t blen = strlen (buffer);
1417 if (STREQLEN (buffer, endmarker, markerlen) &&
1418 (blen == markerlen ||
1419 (blen == markerlen+1 && buffer[markerlen] == '\n')))
1422 if (xwrite (fd, buffer, blen) == -1) {
1423 if (!write_error) perror ("write");
1425 /* continue reading up to the end marker */
1429 /* Reached EOF of stdin without finding the end marker, which
1430 * is likely to be an error.
1432 fprintf (stderr, "%s: end of input reached without finding '%s'\n",
1433 program_name, endmarker);
1442 if (close (fd) == -1) {
1447 return file_in_tmpfile;
1450 unlink (file_in_tmpfile);
1453 free (file_in_tmpfile);
1454 file_in_tmpfile = NULL;
1459 free_file_in (char *s)
1461 if (file_in_tmpfile) {
1462 if (unlink (file_in_tmpfile) == -1)
1463 perror (file_in_tmpfile);
1464 file_in_tmpfile = NULL;
1467 /* Free the device or file name which was strdup'd in file_in().
1468 * Note it's not immediately clear, but for -<< heredocs,
1469 * s == file_in_tmpfile, so this frees up that buffer.
1474 /* Resolve the special FileOut paths ("-" or filename).
1475 * The caller (cmds.c) will call free (str) after the command has run.
1478 file_out (const char *arg)
1482 if (STREQ (arg, "-"))
1483 ret = strdup ("/dev/stdout");