/* ls.c - command to list files and devices */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2003,2005,2007 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 static const struct grub_arg_option options[] = { {"long", 'l', 0, "show a long list with more detailed information", 0, 0}, {"human-readable", 'h', 0, "print sizes in a human readable format", 0, 0}, {"all", 'a', 0, "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_putchar ('\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, int dir); auto int print_files_long (const char *filename, int dir); int print_files (const char *filename, int dir) { if (all || filename[0] != '.') grub_printf ("%s%s ", filename, dir ? "/" : ""); return 0; } int print_files_long (const char *filename, int dir) { char pathname[grub_strlen (dirname) + grub_strlen (filename) + 1]; if ((! all) && (filename[0] == '.')) return 0; if (! dir) { grub_file_t file; if (dirname[grub_strlen (dirname) - 1] == '/') grub_sprintf (pathname, "%s%s", dirname, filename); else grub_sprintf (pathname, "%s/%s", dirname, filename); /* 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; return 0; } if (! human) grub_printf ("%-12llu", (unsigned long long) file->size); else { float fsize = file->size; int fsz = file->size; int units = 0; char buf[20]; while (fsz / 1024) { fsize /= 1024; fsz /= 1024; units++; } if (units) { grub_sprintf (buf, "%0.2f%c", fsize, grub_human_sizes[units]); grub_printf ("%-12s", buf); } else grub_printf ("%-12llu", (unsigned long long) file->size); } grub_file_close (file); } else grub_printf ("%-12s", "DIR"); grub_printf ("%s%s\n", filename, 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; 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; if (longlist) print_files_long (p, 0); else print_files (p, 0); grub_free (dirname); } if (grub_errno == GRUB_ERR_NONE) grub_putchar ('\n'); grub_refresh (); } fail: if (dev) grub_device_close (dev); grub_free (device_name); return 0; } static grub_err_t grub_cmd_ls (struct grub_arg_list *state, int argc, char **args) { 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; } GRUB_MOD_INIT(ls) { (void)mod; /* To stop warning. */ grub_register_command ("ls", grub_cmd_ls, GRUB_COMMAND_FLAG_BOTH, "ls [-l|-h|-a] [FILE]", "List devices and files.", options); } GRUB_MOD_FINI(ls) { grub_unregister_command ("ls"); }