Merge branch 'for-next/mount'
This commit is contained in:
commit
d9870d782a
|
@ -27,33 +27,72 @@
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|||
#include <fs.h>
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#include <errno.h>
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#include <getopt.h>
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#include <linux/err.h>
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static int do_mount(int argc, char *argv[])
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{
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int opt;
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int ret = 0;
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int ret = 0, verbose = 0;
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struct fs_device_d *fsdev;
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struct driver_d *drv;
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const char *type = NULL;
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const char *mountpoint, *dev;
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if (argc == 1) {
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for_each_fs_device(fsdev) {
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printf("%s on %s type %s\n",
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fsdev->parent_device ? dev_name(fsdev->parent_device) : "none",
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fsdev->path,
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fsdev->dev.name);
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}
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return 0;
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}
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while ((opt = getopt(argc, argv, "t:")) > 0) {
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while ((opt = getopt(argc, argv, "t:va")) > 0) {
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switch (opt) {
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case 't':
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type = optarg;
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break;
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case 'v':
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verbose++;
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break;
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case 'a':
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mount_all();
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break;
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}
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}
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if (argc == optind) {
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for_each_fs_device(fsdev) {
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printf("%s on %s type %s\n",
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fsdev->backingstore ? fsdev->backingstore : "none",
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fsdev->path,
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fsdev->dev.name);
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}
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if (verbose) {
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printf("\nSupported filesystems:\n\n");
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bus_for_each_driver(&fs_bus, drv) {
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struct fs_driver_d * fsdrv = drv_to_fs_driver(drv);
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printf("%s\n", fsdrv->drv.name);
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}
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}
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return 0;
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}
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if (argc == optind + 1) {
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struct cdev *cdev;
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const char *path, *devstr;
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devstr = argv[optind];
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if (!strncmp(devstr, "/dev/", 5))
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devstr += 5;
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cdev = cdev_by_name(devstr);
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if (!cdev)
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return -ENOENT;
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path = cdev_mount_default(cdev);
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if (IS_ERR(path))
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return PTR_ERR(path);
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printf("mounted /dev/%s on %s\n", devstr, path);
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return 0;
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}
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if (argc < optind + 2)
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return COMMAND_ERROR_USAGE;
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|
@ -77,10 +116,17 @@ static int do_mount(int argc, char *argv[])
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}
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BAREBOX_CMD_HELP_START(mount)
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BAREBOX_CMD_HELP_USAGE("mount [[-t <fstype] <device> <mountpoint>]\n")
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BAREBOX_CMD_HELP_USAGE("mount [[OPTIONS] <device> [mountpoint]]\n")
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BAREBOX_CMD_HELP_OPT("-t <type>", "specify filesystem type\n")
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BAREBOX_CMD_HELP_OPT("-a", "Mount all blockdevices.\n")
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BAREBOX_CMD_HELP_OPT("-v", "be more verbose\n")
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BAREBOX_CMD_HELP_SHORT("Mount a filesystem of a given type to a mountpoint.\n")
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BAREBOX_CMD_HELP_SHORT("If no fstype is specified, try to detect it automatically.\n")
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BAREBOX_CMD_HELP_SHORT("If no argument is given, list mounted filesystems.\n")
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BAREBOX_CMD_HELP_SHORT("With -a the mount command mounts all block devices whose filesystem\n")
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||||
BAREBOX_CMD_HELP_SHORT("can be detected automatically to /mnt/<partname>\n")
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BAREBOX_CMD_HELP_SHORT("If mountpoint is not given a standard mountpoint of /mnt/devname>\n")
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BAREBOX_CMD_HELP_SHORT("is used. This directoy is created automatically if necessary.\n")
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BAREBOX_CMD_HELP_END
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/**
|
||||
|
|
|
@ -25,6 +25,8 @@
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|||
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#define BLOCKSIZE(blk) (1 << blk->blockbits)
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LIST_HEAD(block_device_list);
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|
||||
/* a chunk of contigous data */
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||||
struct chunk {
|
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void *data; /* data buffer */
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|
@ -367,6 +369,8 @@ int blockdevice_register(struct block_device *blk)
|
|||
if (ret)
|
||||
return ret;
|
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|
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list_add_tail(&blk->list, &block_device_list);
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|
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return 0;
|
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}
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|
@ -387,6 +391,7 @@ int blockdevice_unregister(struct block_device *blk)
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|||
}
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|
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devfs_remove(&blk->cdev);
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list_del(&blk->list);
|
||||
|
||||
return 0;
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}
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|
|
|
@ -422,29 +422,33 @@ static int cramfs_probe(struct device_d *dev)
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|||
{
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struct fs_device_d *fsdev;
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struct cramfs_priv *priv;
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int ret;
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|
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fsdev = dev_to_fs_device(dev);
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|
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priv = xmalloc(sizeof(struct cramfs_priv));
|
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dev->priv = priv;
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|
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if (strncmp(fsdev->backingstore, "/dev/", 5))
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return -ENODEV;
|
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ret = fsdev_open_cdev(fsdev);
|
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if (ret)
|
||||
goto err_out;
|
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|
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priv->cdev = cdev_by_name(fsdev->backingstore + 5);
|
||||
if (!priv->cdev)
|
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return -ENODEV;
|
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priv->cdev = fsdev->cdev;
|
||||
|
||||
if (cramfs_read_super(priv)) {
|
||||
dev_info(dev, "no valid cramfs found\n");
|
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free(priv);
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return -EINVAL;
|
||||
ret = -EINVAL;
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||||
}
|
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priv->curr_base = -1;
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|
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cramfs_uncompress_init ();
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return 0;
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err_out:
|
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free(priv);
|
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|
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return ret;
|
||||
}
|
||||
|
||||
static void cramfs_remove(struct device_d *dev)
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||||
|
|
|
@ -225,7 +225,6 @@ static int ext_readlink(struct device_d *dev, const char *pathname,
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static int ext_probe(struct device_d *dev)
|
||||
{
|
||||
struct fs_device_d *fsdev = dev_to_fs_device(dev);
|
||||
char *backingstore = fsdev->backingstore;
|
||||
int ret;
|
||||
struct ext_filesystem *fs;
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||||
|
||||
|
@ -234,14 +233,11 @@ static int ext_probe(struct device_d *dev)
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|||
dev->priv = fs;
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fs->dev = dev;
|
||||
|
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if (!strncmp(backingstore , "/dev/", 5))
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backingstore += 5;
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||||
|
||||
fs->cdev = cdev_open(backingstore, O_RDWR);
|
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if (!fs->cdev) {
|
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ret = -ENOENT;
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ret = fsdev_open_cdev(fsdev);
|
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if (ret)
|
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goto err_open;
|
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}
|
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|
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fs->cdev = fsdev->cdev;
|
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|
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ret = ext4fs_mount(fs);
|
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if (ret)
|
||||
|
@ -250,7 +246,6 @@ static int ext_probe(struct device_d *dev)
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|||
return 0;
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||||
|
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err_mount:
|
||||
cdev_close(fs->cdev);
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err_open:
|
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free(fs);
|
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|
||||
|
@ -262,7 +257,6 @@ static void ext_remove(struct device_d *dev)
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struct ext_filesystem *fs = dev->priv;
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ext4fs_umount(fs);
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cdev_close(fs->cdev);
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free(fs);
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}
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|
||||
|
|
17
fs/fat/fat.c
17
fs/fat/fat.c
|
@ -373,19 +373,15 @@ static int fat_probe(struct device_d *dev)
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|||
{
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struct fs_device_d *fsdev = dev_to_fs_device(dev);
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struct fat_priv *priv = xzalloc(sizeof(struct fat_priv));
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char *backingstore = fsdev->backingstore;
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int ret;
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dev->priv = priv;
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if (!strncmp(backingstore , "/dev/", 5))
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backingstore += 5;
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|
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priv->cdev = cdev_open(backingstore, O_RDWR);
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if (!priv->cdev) {
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ret = -ENOENT;
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ret = fsdev_open_cdev(fsdev);
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if (ret)
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goto err_open;
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}
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|
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priv->cdev = fsdev->cdev;
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|
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priv->fat.userdata = priv;
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ret = f_mount(&priv->fat);
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|
@ -395,7 +391,6 @@ static int fat_probe(struct device_d *dev)
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|||
return 0;
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|
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err_mount:
|
||||
cdev_close(priv->cdev);
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||||
err_open:
|
||||
free(priv);
|
||||
|
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|
@ -404,10 +399,6 @@ err_open:
|
|||
|
||||
static void fat_remove(struct device_d *dev)
|
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{
|
||||
struct fat_priv *priv = dev->priv;
|
||||
|
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cdev_close(priv->cdev);
|
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|
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free(dev->priv);
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}
|
||||
|
||||
|
|
113
fs/fs.c
113
fs/fs.c
|
@ -32,6 +32,7 @@
|
|||
#include <magicvar.h>
|
||||
#include <environment.h>
|
||||
#include <libgen.h>
|
||||
#include <block.h>
|
||||
|
||||
void *read_file(const char *filename, size_t *size)
|
||||
{
|
||||
|
@ -1231,6 +1232,9 @@ static void fs_remove(struct device_d *dev)
|
|||
if (fsdev == fs_dev_root)
|
||||
fs_dev_root = NULL;
|
||||
|
||||
if (fsdev->cdev)
|
||||
cdev_close(fsdev->cdev);
|
||||
|
||||
free(fsdev->backingstore);
|
||||
free(fsdev);
|
||||
}
|
||||
|
@ -1266,10 +1270,7 @@ static const char *detect_fs(const char *filename)
|
|||
if (type == filetype_unknown)
|
||||
return NULL;
|
||||
|
||||
for_each_driver(drv) {
|
||||
if (drv->bus != &fs_bus)
|
||||
continue;
|
||||
|
||||
bus_for_each_driver(&fs_bus, drv) {
|
||||
fdrv = drv_to_fs_driver(drv);
|
||||
|
||||
if (type == fdrv->type)
|
||||
|
@ -1279,6 +1280,23 @@ static const char *detect_fs(const char *filename)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
int fsdev_open_cdev(struct fs_device_d *fsdev)
|
||||
{
|
||||
const char *backingstore = fsdev->backingstore;
|
||||
|
||||
if (!strncmp(backingstore , "/dev/", 5))
|
||||
backingstore += 5;
|
||||
|
||||
fsdev->cdev = cdev_open(backingstore, O_RDWR);
|
||||
if (!fsdev->cdev)
|
||||
return -EINVAL;
|
||||
|
||||
fsdev->dev.parent = fsdev->cdev->dev;
|
||||
fsdev->parent_device = fsdev->cdev->dev;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Mount a device to a directory.
|
||||
* We do this by registering a new device on which the filesystem
|
||||
|
@ -1323,14 +1341,6 @@ int mount(const char *device, const char *fsname, const char *_path)
|
|||
fsdev->path = xstrdup(path);
|
||||
fsdev->dev.bus = &fs_bus;
|
||||
|
||||
if (!strncmp(device, "/dev/", 5))
|
||||
fsdev->cdev = cdev_by_name(device + 5);
|
||||
|
||||
if (fsdev->cdev) {
|
||||
fsdev->dev.parent = fsdev->cdev->dev;
|
||||
fsdev->parent_device = fsdev->cdev->dev;
|
||||
}
|
||||
|
||||
ret = register_device(&fsdev->dev);
|
||||
if (ret)
|
||||
goto err_register;
|
||||
|
@ -1661,3 +1671,82 @@ ssize_t mem_write(struct cdev *cdev, const void *buf, size_t count, loff_t offse
|
|||
return size;
|
||||
}
|
||||
EXPORT_SYMBOL(mem_write);
|
||||
|
||||
/*
|
||||
* cdev_get_mount_path - return the path a cdev is mounted on
|
||||
*
|
||||
* If a cdev is mounted return the path it's mounted on, NULL
|
||||
* otherwise.
|
||||
*/
|
||||
const char *cdev_get_mount_path(struct cdev *cdev)
|
||||
{
|
||||
struct fs_device_d *fsdev;
|
||||
|
||||
for_each_fs_device(fsdev) {
|
||||
if (fsdev->cdev && fsdev->cdev == cdev)
|
||||
return fsdev->path;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* cdev_mount_default - mount a cdev to the default path
|
||||
*
|
||||
* If a cdev is already mounted return the path it's mounted on, otherwise
|
||||
* mount it to /mnt/<cdevname> and return the path. Returns an error pointer
|
||||
* on failure.
|
||||
*/
|
||||
const char *cdev_mount_default(struct cdev *cdev)
|
||||
{
|
||||
const char *path;
|
||||
char *newpath, *devpath;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* If this cdev is already mounted somewhere use this path
|
||||
* instead of mounting it again to avoid corruption on the
|
||||
* filesystem.
|
||||
*/
|
||||
path = cdev_get_mount_path(cdev);
|
||||
if (path)
|
||||
return path;
|
||||
|
||||
newpath = asprintf("/mnt/%s", cdev->name);
|
||||
make_directory(newpath);
|
||||
|
||||
devpath = asprintf("/dev/%s", cdev->name);
|
||||
|
||||
ret = mount(devpath, NULL, newpath);
|
||||
|
||||
free(devpath);
|
||||
|
||||
if (ret) {
|
||||
free(newpath);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
return cdev_get_mount_path(cdev);
|
||||
}
|
||||
|
||||
/*
|
||||
* mount_all - iterate over block devices and mount all devices we are able to
|
||||
*/
|
||||
void mount_all(void)
|
||||
{
|
||||
struct device_d *dev;
|
||||
struct block_device *bdev;
|
||||
|
||||
if (!IS_ENABLED(CONFIG_BLOCK))
|
||||
return;
|
||||
|
||||
for_each_device(dev)
|
||||
device_detect(dev);
|
||||
|
||||
for_each_block_device(bdev) {
|
||||
struct cdev *cdev = &bdev->cdev;
|
||||
|
||||
list_for_each_entry(cdev, &bdev->dev->cdevs, devices_list)
|
||||
cdev_mount_default(cdev);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -553,25 +553,22 @@ static int ubifs_probe(struct device_d *dev)
|
|||
{
|
||||
struct fs_device_d *fsdev = dev_to_fs_device(dev);
|
||||
struct ubifs_priv *priv = xzalloc(sizeof(struct ubifs_priv));
|
||||
char *backingstore = fsdev->backingstore;
|
||||
int ret;
|
||||
|
||||
dev->priv = priv;
|
||||
|
||||
if (!strncmp(backingstore , "/dev/", 5))
|
||||
backingstore += 5;
|
||||
|
||||
priv->cdev = cdev_open(backingstore, O_RDONLY);
|
||||
if (!priv->cdev) {
|
||||
ret = -ENOENT;
|
||||
ret = fsdev_open_cdev(fsdev);
|
||||
if (ret)
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
priv->cdev = fsdev->cdev;
|
||||
|
||||
priv->ubi = ubi_open_volume_cdev(priv->cdev, UBI_READONLY);
|
||||
if (IS_ERR(priv->ubi)) {
|
||||
dev_err(dev, "failed to open ubi volume: %s\n",
|
||||
strerror(-PTR_ERR(priv->ubi)));
|
||||
return PTR_ERR(priv->ubi);
|
||||
ret = PTR_ERR(priv->ubi);
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
priv->sb = ubifs_get_super(priv->ubi, 0);
|
||||
|
@ -596,7 +593,6 @@ static void ubifs_remove(struct device_d *dev)
|
|||
|
||||
ubifs_umount(c);
|
||||
ubi_close_volume(priv->ubi);
|
||||
cdev_close(priv->cdev);
|
||||
|
||||
free(c);
|
||||
free(sb);
|
||||
|
|
|
@ -2,6 +2,7 @@
|
|||
#define __BLOCK_H
|
||||
|
||||
#include <driver.h>
|
||||
#include <linux/list.h>
|
||||
|
||||
struct block_device;
|
||||
|
||||
|
@ -14,6 +15,7 @@ struct chunk;
|
|||
|
||||
struct block_device {
|
||||
struct device_d *dev;
|
||||
struct list_head list;
|
||||
struct block_device_ops *ops;
|
||||
int blockbits;
|
||||
int num_blocks;
|
||||
|
@ -26,6 +28,10 @@ struct block_device {
|
|||
struct cdev cdev;
|
||||
};
|
||||
|
||||
extern struct list_head block_device_list;
|
||||
|
||||
#define for_each_block_device(bdev) list_for_each_entry(bdev, &block_device_list, list)
|
||||
|
||||
int blockdevice_register(struct block_device *blk);
|
||||
int blockdevice_unregister(struct block_device *blk);
|
||||
|
||||
|
|
|
@ -39,7 +39,6 @@ typedef struct filep {
|
|||
#define FS_DRIVER_NO_DEV 1
|
||||
|
||||
struct fs_driver_d {
|
||||
char *name;
|
||||
int (*probe) (struct device_d *dev);
|
||||
int (*mkdir)(struct device_d *dev, const char *pathname);
|
||||
int (*rmdir)(struct device_d *dev, const char *pathname);
|
||||
|
@ -88,6 +87,7 @@ struct fs_driver_d {
|
|||
|
||||
extern struct list_head fs_device_list;
|
||||
#define for_each_fs_device(f) list_for_each_entry(f, &fs_device_list, list)
|
||||
extern struct bus_type fs_bus;
|
||||
|
||||
struct fs_device_d {
|
||||
char *backingstore; /* the device we are associated with */
|
||||
|
@ -193,4 +193,9 @@ void automount_print(void);
|
|||
|
||||
int unlink_recursive(const char *path, char **failedpath);
|
||||
|
||||
int fsdev_open_cdev(struct fs_device_d *fsdev);
|
||||
const char *cdev_get_mount_path(struct cdev *cdev);
|
||||
const char *cdev_mount_default(struct cdev *cdev);
|
||||
void mount_all(void);
|
||||
|
||||
#endif /* __FS_H */
|
||||
|
|
Loading…
Reference in New Issue