108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*
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* mount.c - mount devices
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*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file
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* @brief Filesystem mounting support
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*/
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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <errno.h>
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static int do_mount (cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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int ret = 0;
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struct mtab_entry *entry = NULL;
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if (argc == 1) {
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do {
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entry = mtab_next_entry(entry);
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if (entry) {
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printf("%s on %s type %s\n",
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entry->parent_device ? entry->parent_device->name : "none",
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entry->path,
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entry->dev->name);
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}
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} while (entry);
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return 0;
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}
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if (argc != 4)
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return COMMAND_ERROR_USAGE;
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if ((ret = mount(argv[1], argv[2], argv[3]))) {
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perror("mount");
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return 1;
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}
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return 0;
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}
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static const __maybe_unused char cmd_mount_help[] =
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"Usage: mount: list mounted filesystems\n"
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"or: mount <device> <fstype> <mountpoint>\n"
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"\n"
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"Mount a filesystem of a given type to a mountpoint.\n"
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"<device> can be one of /dev/* or some arbitrary string if no\n"
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"device is needed for this driver (for example ramfs).\n"
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"<fstype> is the filesystem driver to use. Try the 'devinfo' command\n"
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"for a list of available drivers.\n"
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"<mountpoint> must be an empty directory descending directly from the\n"
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"root directory.\n";
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U_BOOT_CMD_START(mount)
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.maxargs = 4,
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.cmd = do_mount,
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.usage = "mount a filesystem to a device",
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U_BOOT_CMD_HELP(cmd_mount_help)
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U_BOOT_CMD_END
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/** @page mount_command mount
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* Usage: mount [\<device> \<fstype> \<mountpoint>]
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*
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* Mounts a filesystem of a given \<fstype> on a \<device> to a \<mountpoint>.
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* \<device> can be one of /dev/ * or some arbitrary string if no
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* device is needed for this driver (for example ramfs).
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*
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* \<fstype> is the filesystem driver to use. Try the 'devinfo' command
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* for a list of available drivers.
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*
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* \<mountpoint> must be an empty directory descending directly from the
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* root directory.
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*/
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/** @page how_mount_works How mount works in U-Boot
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*
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* Mounting a filesystem ontop of a device is working like devices and drivers
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* are finding together.
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*
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* The mount command creates a new device with the filesystem name as the
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* driver for this "device". So the framework is able to merge both parts
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* together.
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*
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* By the way: With this feature its impossible to accidentely remove
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* partitions in use. A partition is internally also a device. If its mounted
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* it will be marked as busy, so an delpart command fails, until the filesystem
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* has been unmounted.
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*/
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