/* ls.c - command to list files and devices */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2003,2005,2007,2008,2009 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include static const struct grub_arg_option options[] = { {"long", 'l', 0, N_("Show a long list with more detailed information."), 0, 0}, {"human-readable", 'h', 0, N_("Print sizes in a human readable format."), 0, 0}, {"all", 'a', 0, N_("List all files."), 0, 0}, {0, 0, 0, 0, 0, 0} }; static const char grub_human_sizes[] = {' ', 'K', 'M', 'G', 'T'}; static grub_err_t grub_ls_list_devices (int longlist) { auto int grub_ls_print_devices (const char *name); int grub_ls_print_devices (const char *name) { if (longlist) grub_normal_print_device_info (name); else grub_printf ("(%s) ", name); return 0; } grub_device_iterate (grub_ls_print_devices); grub_xputs ("\n"); grub_refresh (); return 0; } static grub_err_t grub_ls_list_files (char *dirname, int longlist, int all, int human) { char *device_name; grub_fs_t fs; const char *path; grub_device_t dev; auto int print_files (const char *filename, const struct grub_dirhook_info *info); auto int print_files_long (const char *filename, const struct grub_dirhook_info *info); int print_files (const char *filename, const struct grub_dirhook_info *info) { if (all || filename[0] != '.') grub_printf ("%s%s ", filename, info->dir ? "/" : ""); return 0; } int print_files_long (const char *filename, const struct grub_dirhook_info *info) { if ((! all) && (filename[0] == '.')) return 0; if (! info->dir) { grub_file_t file; char *pathname; if (dirname[grub_strlen (dirname) - 1] == '/') pathname = grub_xasprintf ("%s%s", dirname, filename); else pathname = grub_xasprintf ("%s/%s", dirname, filename); if (!pathname) return 1; /* XXX: For ext2fs symlinks are detected as files while they should be reported as directories. */ file = grub_file_open (pathname); if (! file) { grub_errno = 0; grub_free (pathname); return 0; } if (! human) grub_printf ("%-12llu", (unsigned long long) file->size); else { grub_uint64_t fsize = file->size * 100ULL; int fsz = file->size; int units = 0; char buf[20]; while (fsz / 1024) { fsize = (fsize + 512) / 1024; fsz /= 1024; units++; } if (units) { grub_uint32_t whole, fraction; whole = grub_divmod64 (fsize, 100, &fraction); grub_snprintf (buf, sizeof (buf), "%u.%02u%c", whole, fraction, grub_human_sizes[units]); grub_printf ("%-12s", buf); } else grub_printf ("%-12llu", (unsigned long long) file->size); } grub_file_close (file); grub_free (pathname); } else grub_printf ("%-12s", "DIR"); if (info->mtimeset) { struct grub_datetime datetime; grub_unixtime2datetime (info->mtime, &datetime); if (human) grub_printf (" %d-%02d-%02d %02d:%02d:%02d %-11s ", datetime.year, datetime.month, datetime.day, datetime.hour, datetime.minute, datetime.second, grub_get_weekday_name (&datetime)); else grub_printf (" %04d%02d%02d%02d%02d%02d ", datetime.year, datetime.month, datetime.day, datetime.hour, datetime.minute, datetime.second); } grub_printf ("%s%s\n", filename, info->dir ? "/" : ""); return 0; } device_name = grub_file_get_device_name (dirname); dev = grub_device_open (device_name); if (! dev) goto fail; fs = grub_fs_probe (dev); path = grub_strchr (dirname, ')'); if (! path) path = dirname; else path++; if (! path && ! device_name) { grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid argument"); goto fail; } if (! *path) { if (grub_errno == GRUB_ERR_UNKNOWN_FS) grub_errno = GRUB_ERR_NONE; grub_normal_print_device_info (device_name); } else if (fs) { if (longlist) (fs->dir) (dev, path, print_files_long); else (fs->dir) (dev, path, print_files); if (grub_errno == GRUB_ERR_BAD_FILE_TYPE && path[grub_strlen (path) - 1] != '/') { /* PATH might be a regular file. */ char *p; grub_file_t file; struct grub_dirhook_info info; grub_errno = 0; file = grub_file_open (dirname); if (! file) goto fail; grub_file_close (file); p = grub_strrchr (dirname, '/') + 1; dirname = grub_strndup (dirname, p - dirname); if (! dirname) goto fail; all = 1; grub_memset (&info, 0, sizeof (info)); if (longlist) print_files_long (p, &info); else print_files (p, &info); grub_free (dirname); } if (grub_errno == GRUB_ERR_NONE) grub_xputs ("\n"); grub_refresh (); } fail: if (dev) grub_device_close (dev); grub_free (device_name); return 0; } static grub_err_t grub_cmd_ls (grub_extcmd_t cmd, int argc, char **args) { struct grub_arg_list *state = cmd->state; if (argc == 0) grub_ls_list_devices (state[0].set); else grub_ls_list_files (args[0], state[0].set, state[2].set, state[1].set); return 0; } static grub_extcmd_t cmd; GRUB_MOD_INIT(ls) { cmd = grub_register_extcmd ("ls", grub_cmd_ls, GRUB_COMMAND_FLAG_BOTH, N_("[-l|-h|-a] [FILE]"), N_("List devices and files."), options); } GRUB_MOD_FINI(ls) { grub_unregister_extcmd (cmd); }