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BVK Chaitanya
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265d68cd10
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810 changed files with 4980 additions and 2508 deletions
276
grub-core/commands/ls.c
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276
grub-core/commands/ls.c
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/* 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) 2003,2005,2007,2008,2009 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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, see <http://www.gnu.org/licenses/>.
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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/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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#include <grub/normal.h>
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#include <grub/extcmd.h>
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#include <grub/datetime.h>
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#include <grub/i18n.h>
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static const struct grub_arg_option options[] =
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{
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{"long", 'l', 0, N_("Show a long list with more detailed information."), 0, 0},
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{"human-readable", 'h', 0, N_("Print sizes in a human readable format."), 0, 0},
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{"all", 'a', 0, N_("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_devices (int longlist)
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{
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auto int grub_ls_print_devices (const char *name);
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int grub_ls_print_devices (const char *name)
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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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return 0;
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}
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grub_device_iterate (grub_ls_print_devices);
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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,
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const struct grub_dirhook_info *info);
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auto int print_files_long (const char *filename,
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const struct grub_dirhook_info *info);
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int print_files (const char *filename, const struct grub_dirhook_info *info)
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{
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if (all || filename[0] != '.')
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grub_printf ("%s%s ", filename, info->dir ? "/" : "");
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return 0;
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}
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int print_files_long (const char *filename,
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const struct grub_dirhook_info *info)
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{
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if ((! all) && (filename[0] == '.'))
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return 0;
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if (! info->dir)
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{
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grub_file_t file;
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char *pathname;
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if (dirname[grub_strlen (dirname) - 1] == '/')
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pathname = grub_xasprintf ("%s%s", dirname, filename);
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else
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pathname = grub_xasprintf ("%s/%s", dirname, filename);
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if (!pathname)
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return 1;
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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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grub_free (pathname);
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return 0;
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}
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if (! human)
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grub_printf ("%-12llu", (unsigned long long) file->size);
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else
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{
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grub_uint64_t fsize = file->size * 100ULL;
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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 = (fsize + 512) / 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_uint32_t whole, fraction;
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whole = grub_divmod64 (fsize, 100, &fraction);
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grub_snprintf (buf, sizeof (buf),
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"%u.%02u%c", whole, fraction,
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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 ("%-12llu", (unsigned long long) file->size);
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}
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grub_file_close (file);
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grub_free (pathname);
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}
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else
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grub_printf ("%-12s", "DIR");
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if (info->mtimeset)
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{
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struct grub_datetime datetime;
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grub_unixtime2datetime (info->mtime, &datetime);
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if (human)
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grub_printf (" %d-%02d-%02d %02d:%02d:%02d %-11s ",
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datetime.year, datetime.month, datetime.day,
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datetime.hour, datetime.minute,
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datetime.second,
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grub_get_weekday_name (&datetime));
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else
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grub_printf (" %04d%02d%02d%02d%02d%02d ",
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datetime.year, datetime.month,
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datetime.day, datetime.hour,
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datetime.minute, datetime.second);
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}
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grub_printf ("%s%s\n", filename, info->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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struct grub_dirhook_info info;
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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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grub_memset (&info, 0, sizeof (info));
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if (longlist)
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print_files_long (p, &info);
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else
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print_files (p, &info);
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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 (grub_extcmd_t cmd, int argc, char **args)
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{
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struct grub_arg_list *state = cmd->state;
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if (argc == 0)
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grub_ls_list_devices (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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static grub_extcmd_t cmd;
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GRUB_MOD_INIT(ls)
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{
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cmd = grub_register_extcmd ("ls", grub_cmd_ls, GRUB_COMMAND_FLAG_BOTH,
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N_("[-l|-h|-a] [FILE]"),
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N_("List devices and files."), options);
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}
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GRUB_MOD_FINI(ls)
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{
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grub_unregister_extcmd (cmd);
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}
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