X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=fish%2Ffish.c;h=5b0a06560ee9c11f2d11c15f8896170a4ee344df;hp=e66880f297c4de5da890a2f2d9a56f679d51d09d;hb=88da5cf8a32e683ed1d78419fcde609a389a2f65;hpb=e395d7db8fd3fe3d1b121258fe2f401d6b3e64c8 diff --git a/fish/fish.c b/fish/fish.c index e66880f..5b0a065 100644 --- a/fish/fish.c +++ b/fish/fish.c @@ -29,6 +29,8 @@ #include #include #include +#include +#include #ifdef HAVE_LIBREADLINE #include @@ -56,7 +58,6 @@ static void interactive (void); static void shell_script (void); static void script (int prompt); static void cmdline (char *argv[], int optind, int argc); -static int issue_command (const char *cmd, char *argv[]); static void initialize_readline (void); static void cleanup_readline (void); static void add_history_line (const char *); @@ -91,6 +92,8 @@ usage (void) "Copyright (C) 2009 Red Hat Inc.\n" "Usage:\n" " guestfish [--options] cmd [: cmd : cmd ...]\n" + " guestfish -i libvirt-domain\n" + " guestfish -i disk-image(s)\n" "or for interactive use:\n" " guestfish\n" "or from a shell script:\n" @@ -103,6 +106,8 @@ usage (void) " -h|--cmd-help cmd Display detailed help on 'cmd'\n" " -a|--add image Add image\n" " -D|--no-dest-paths Don't tab-complete paths from guest fs\n" + " -f|--file file Read commands from file\n" + " -i|--inspector Run virt-inspector to get disk mountpoints\n" " -m|--mount dev[:mnt] Mount dev on mnt (if omitted, /)\n" " -n|--no-sync Don't autosync\n" " -r|--ro Mount read-only\n" @@ -114,11 +119,13 @@ usage (void) int main (int argc, char *argv[]) { - static const char *options = "a:h::m:nrv?V"; + static const char *options = "a:f:h::im:nrv?V"; static struct option long_options[] = { { "add", 1, 0, 'a' }, { "cmd-help", 2, 0, 'h' }, + { "file", 1, 0, 'f' }, { "help", 0, 0, '?' }, + { "inspector", 0, 0, 'i' }, { "mount", 1, 0, 'm' }, { "no-dest-paths", 0, 0, 'D' }, { "no-sync", 0, 0, 'n' }, @@ -131,11 +138,17 @@ main (int argc, char *argv[]) struct drv *drv; struct mp *mps = NULL; struct mp *mp; - char *p; - int c; + char *p, *file = NULL; + int c, inspector = 0; + struct sigaction sa; initialize_readline (); + memset (&sa, 0, sizeof sa); + sa.sa_handler = SIG_IGN; + sa.sa_flags = SA_RESTART; + sigaction (SIGPIPE, &sa, NULL); + /* guestfs_create is meant to be a lightweight operation, so * it's OK to do it early here. */ @@ -184,6 +197,14 @@ main (int argc, char *argv[]) complete_dest_paths = 0; break; + case 'f': + if (file) { + fprintf (stderr, _("guestfish: only one -f parameter can be given\n")); + exit (1); + } + file = optarg; + break; + case 'h': if (optarg) display_command (optarg); @@ -193,6 +214,10 @@ main (int argc, char *argv[]) list_commands (); exit (0); + case 'i': + inspector = 1; + break; + case 'm': mp = malloc (sizeof (struct mp)); if (!mp) { @@ -238,6 +263,55 @@ main (int argc, char *argv[]) } } + /* Inspector mode invalidates most of the other arguments. */ + if (inspector) { + char cmd[1024]; + int r; + + if (drvs || mps) { + fprintf (stderr, _("guestfish: cannot use -i option with -a or -m\n")); + exit (1); + } + if (optind >= argc) { + fprintf (stderr, _("guestfish -i requires a libvirt domain or path(s) to disk image(s)\n")); + exit (1); + } + + strcpy (cmd, "a=`virt-inspector"); + while (optind < argc) { + if (strlen (cmd) + strlen (argv[optind]) + strlen (argv[0]) + 60 + >= sizeof cmd) { + fprintf (stderr, _("guestfish: virt-inspector command too long for fixed-size buffer\n")); + exit (1); + } + strcat (cmd, " '"); + strcat (cmd, argv[optind]); + strcat (cmd, "'"); + optind++; + } + + if (read_only) + strcat (cmd, " --ro-fish"); + else + strcat (cmd, " --fish"); + + sprintf (&cmd[strlen(cmd)], "` && %s $a", argv[0]); + + if (guestfs_get_verbose (g)) + strcat (cmd, " -v"); + if (!guestfs_get_autosync (g)) + strcat (cmd, " -n"); + + /*printf ("%s\n", cmd);*/ + + r = system (cmd); + if (r == -1) { + perror ("system"); + exit (1); + } + exit (WEXITSTATUS (r)); + } + /* If we've got drives to add, add them now. */ add_drives (drvs); @@ -247,6 +321,15 @@ main (int argc, char *argv[]) mount_mps (mps); } + /* -f (file) parameter? */ + if (file) { + close (0); + if (open (file, O_RDONLY) == -1) { + perror (file); + exit (1); + } + } + /* Interactive, shell script, or command(s) on the command line? */ if (optind >= argc) { if (isatty (0)) @@ -387,6 +470,8 @@ script (int prompt) "\n")); while (!quit) { + char *pipe = NULL; + exit_on_error = global_exit_on_error; buf = rl_gets (prompt); @@ -447,9 +532,8 @@ script (int prompt) /* Get the parameters. */ while (*p && i < sizeof argv / sizeof argv[0]) { - /* Parameters which start with quotes or square brackets - * are treated specially. Bare parameters are delimited - * by whitespace. + /* Parameters which start with quotes or pipes are treated + * specially. Bare parameters are delimited by whitespace. */ if (*p == '"') { p++; @@ -481,6 +565,10 @@ script (int prompt) } p[len] = '\0'; pend = p[len+1] ? &p[len+2] : &p[len+1]; + } else if (*p == '|') { + *p = '\0'; + pipe = p+1; + continue; /* } else if (*p == '[') { int c = 1; @@ -532,7 +620,7 @@ script (int prompt) argv[i] = NULL; got_command: - if (issue_command (cmd, argv) == -1) { + if (issue_command (cmd, argv, pipe) == -1) { if (exit_on_error) exit (1); } @@ -561,18 +649,51 @@ cmdline (char *argv[], int optind, int argc) optind++; if (optind == argc) { - if (issue_command (cmd, params) == -1) exit (1); + if (issue_command (cmd, params, NULL) == -1) exit (1); } else { argv[optind] = NULL; - if (issue_command (cmd, params) == -1) exit (1); + if (issue_command (cmd, params, NULL) == -1) exit (1); cmdline (argv, optind+1, argc); } } -static int -issue_command (const char *cmd, char *argv[]) +int +issue_command (const char *cmd, char *argv[], const char *pipecmd) { int argc; + int stdout_saved_fd = -1; + int pid = 0; + int r; + + /* For | ... commands. Annoyingly we can't use popen(3) here. */ + if (pipecmd) { + int fd[2]; + + fflush (stdout); + pipe (fd); + pid = fork (); + if (pid == -1) { + perror ("fork"); + return -1; + } + + if (pid == 0) { /* Child process. */ + close (fd[1]); + dup2 (fd[0], 0); + + r = system (pipecmd); + if (r == -1) { + perror (pipecmd); + _exit (1); + } + _exit (WEXITSTATUS (r)); + } + + stdout_saved_fd = dup (1); + close (fd[0]); + dup2 (fd[1], 1); + close (fd[1]); + } for (argc = 0; argv[argc] != NULL; ++argc) ; @@ -582,27 +703,39 @@ issue_command (const char *cmd, char *argv[]) list_commands (); else display_command (argv[0]); - return 0; + r = 0; } else if (strcasecmp (cmd, "quit") == 0 || strcasecmp (cmd, "exit") == 0 || strcasecmp (cmd, "q") == 0) { quit = 1; - return 0; + r = 0; } else if (strcasecmp (cmd, "alloc") == 0 || strcasecmp (cmd, "allocate") == 0) - return do_alloc (cmd, argc, argv); + r = do_alloc (cmd, argc, argv); else if (strcasecmp (cmd, "echo") == 0) - return do_echo (cmd, argc, argv); + r = do_echo (cmd, argc, argv); else if (strcasecmp (cmd, "edit") == 0 || strcasecmp (cmd, "vi") == 0 || strcasecmp (cmd, "emacs") == 0) - return do_edit (cmd, argc, argv); + r = do_edit (cmd, argc, argv); else if (strcasecmp (cmd, "lcd") == 0) - return do_lcd (cmd, argc, argv); + r = do_lcd (cmd, argc, argv); + else if (strcasecmp (cmd, "glob") == 0) + r = do_glob (cmd, argc, argv); else - return run_action (cmd, argc, argv); + r = run_action (cmd, argc, argv); + + if (pipecmd) { + fflush (stdout); + close (1); + dup2 (stdout_saved_fd, 1); + close (stdout_saved_fd); + waitpid (pid, NULL, 0); + } + + return r; } void @@ -622,6 +755,8 @@ list_builtin_commands (void) "edit", _("edit a file in the image")); printf ("%-20s %s\n", "lcd", _("local change directory")); + printf ("%-20s %s\n", + "glob", _("expand wildcards in command")); /* actions are printed after this (see list_commands) */ } @@ -676,6 +811,13 @@ display_builtin_command (const char *cmd) " Change guestfish's current directory. This command is\n" " useful if you want to download files to a particular\n" " place.\n")); + else if (strcasecmp (cmd, "glob") == 0) + printf (_("glob - expand wildcards in command\n" + " glob [ ...]\n" + "\n" + " Glob runs with wildcards expanded in any\n" + " command args. Note that the command is run repeatedly\n" + " once for each expanded argument.\n")); else if (strcasecmp (cmd, "help") == 0) printf (_("help - display a list of commands or help on a command\n" " help cmd\n"