299 lines
6.5 KiB
C
299 lines
6.5 KiB
C
/* ls.c - command to list files and devices */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2005 Free Software Foundation, Inc.
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*
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* GRUB is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/normal.h>
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#include <grub/arg.h>
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#include <grub/disk.h>
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#include <grub/device.h>
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#include <grub/term.h>
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#include <grub/partition.h>
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#include <grub/file.h>
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static const struct grub_arg_option options[] =
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{
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{"long", 'l', 0, "show a long list with more detailed information", 0, 0},
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{"human-readable", 'h', 0, "print sizes in a human readable format", 0, 0},
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{"all", 'a', 0, "list all files", 0, 0},
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{0, 0, 0, 0, 0, 0}
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};
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static const char grub_human_sizes[] = {' ', 'K', 'M', 'G', 'T'};
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static grub_err_t
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grub_ls_list_disks (int longlist)
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{
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auto int grub_ls_print_disks (const char *name);
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int grub_ls_print_disks (const char *name)
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{
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grub_device_t dev;
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auto int print_partition (grub_disk_t disk, const grub_partition_t p);
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int print_partition (grub_disk_t disk __attribute__ ((unused)),
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const grub_partition_t p)
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{
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char *pname = grub_partition_get_name (p);
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if (pname)
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{
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if (longlist)
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{
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char device_name[grub_strlen (name) + 1
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+ grub_strlen (pname) + 1];
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grub_sprintf (device_name, "%s,%s", name, pname);
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grub_normal_print_device_info (device_name);
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}
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else
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grub_printf ("(%s,%s) ", name, pname);
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grub_free (pname);
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}
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return 0;
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}
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dev = grub_device_open (name);
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grub_errno = GRUB_ERR_NONE;
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if (dev)
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{
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if (longlist)
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grub_normal_print_device_info (name);
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else
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grub_printf ("(%s) ", name);
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if (dev->disk && dev->disk->has_partitions)
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{
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grub_partition_iterate (dev->disk, print_partition);
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grub_errno = GRUB_ERR_NONE;
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}
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grub_device_close (dev);
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}
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return 0;
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}
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grub_disk_dev_iterate (grub_ls_print_disks);
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grub_putchar ('\n');
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grub_refresh ();
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return 0;
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}
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static grub_err_t
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grub_ls_list_files (char *dirname, int longlist, int all, int human)
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{
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char *device_name;
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grub_fs_t fs;
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const char *path;
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grub_device_t dev;
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auto int print_files (const char *filename, int dir);
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auto int print_files_long (const char *filename, int dir);
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int print_files (const char *filename, int dir)
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{
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if (all || filename[0] != '.')
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grub_printf ("%s%s ", filename, dir ? "/" : "");
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return 0;
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}
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int print_files_long (const char *filename, int dir)
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{
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char pathname[grub_strlen (dirname) + grub_strlen (filename) + 1];
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if ((! all) && (filename[0] == '.'))
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return 0;
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if (! dir)
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{
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grub_file_t file;
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if (dirname[grub_strlen (dirname) - 1] == '/')
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grub_sprintf (pathname, "%s%s", dirname, filename);
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else
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grub_sprintf (pathname, "%s/%s", dirname, filename);
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/* XXX: For ext2fs symlinks are detected as files while they
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should be reported as directories. */
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file = grub_file_open (pathname);
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if (! file)
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{
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grub_errno = 0;
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return 0;
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}
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if (! human)
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grub_printf ("%-12d", file->size);
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else
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{
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float fsize = file->size;
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int fsz = file->size;
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int units = 0;
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char buf[20];
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while (fsz / 1024)
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{
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fsize /= 1024;
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fsz /= 1024;
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units++;
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}
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if (units)
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{
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grub_sprintf (buf, "%0.2f%c", fsize, grub_human_sizes[units]);
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grub_printf ("%-12s", buf);
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}
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else
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grub_printf ("%-12d", file->size);
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}
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(fs->close) (file);
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}
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else
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grub_printf ("%-12s", "DIR");
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grub_printf ("%s%s\n", filename, dir ? "/" : "");
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return 0;
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}
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device_name = grub_file_get_device_name (dirname);
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dev = grub_device_open (device_name);
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if (! dev)
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goto fail;
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fs = grub_fs_probe (dev);
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path = grub_strchr (dirname, ')');
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if (! path)
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path = dirname;
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else
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path++;
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if (! path && ! device_name)
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid argument");
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goto fail;
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}
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if (! *path)
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{
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if (grub_errno == GRUB_ERR_UNKNOWN_FS)
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grub_errno = GRUB_ERR_NONE;
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grub_normal_print_device_info (device_name);
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}
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else if (fs)
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{
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if (longlist)
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(fs->dir) (dev, path, print_files_long);
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else
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(fs->dir) (dev, path, print_files);
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if (grub_errno == GRUB_ERR_BAD_FILE_TYPE
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&& path[grub_strlen (path) - 1] != '/')
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{
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/* PATH might be a regular file. */
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char *p;
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grub_file_t file;
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grub_errno = 0;
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file = grub_file_open (dirname);
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if (! file)
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goto fail;
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grub_file_close (file);
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p = grub_strrchr (dirname, '/') + 1;
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dirname = grub_strndup (dirname, p - dirname);
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if (! dirname)
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goto fail;
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all = 1;
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if (longlist)
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print_files_long (p, 0);
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else
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print_files (p, 0);
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grub_free (dirname);
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}
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if (grub_errno == GRUB_ERR_NONE)
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grub_putchar ('\n');
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grub_refresh ();
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}
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fail:
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if (dev)
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grub_device_close (dev);
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grub_free (device_name);
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return 0;
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}
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static grub_err_t
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grub_cmd_ls (struct grub_arg_list *state, int argc, char **args)
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{
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if (argc == 0)
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grub_ls_list_disks (state[0].set);
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else
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grub_ls_list_files (args[0], state[0].set, state[2].set,
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state[1].set);
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return 0;
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}
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#ifdef GRUB_UTIL
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void
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grub_ls_init (void)
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{
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grub_register_command ("ls", grub_cmd_ls, GRUB_COMMAND_FLAG_BOTH,
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"ls [-l|-h|-a] [FILE]",
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"List devices and files.", options);
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}
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void
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grub_ls_fini (void)
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{
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grub_unregister_command ("ls");
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}
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#else /* ! GRUB_UTIL */
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GRUB_MOD_INIT
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{
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(void)mod; /* To stop warning. */
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grub_register_command ("ls", grub_cmd_ls, GRUB_COMMAND_FLAG_BOTH,
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"ls [-l|-h|-a] [FILE]",
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"List devices and files.", options);
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}
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GRUB_MOD_FINI
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{
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grub_unregister_command ("ls");
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}
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#endif /* ! GRUB_UTIL */
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