[PATCH 7/9] mount: support filesystem options passed via -o
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Thu Feb 6 11:40:52 EST 2014
From: Uwe Kleine-König <uwe at kleine-koenig.org>
Similar to mount(8) the barebox command mount now supports passing a string
to the file system driver via -o.
This is used in on of the next commits to let the user specify port numbers
for nfs mounts.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
arch/arm/boards/raspberry-pi/rpi.c | 2 +-
arch/arm/mach-omap/omap_generic.c | 2 +-
arch/arm/mach-omap/xload.c | 4 ++--
arch/arm/mach-socfpga/generic.c | 2 +-
commands/mount.c | 19 ++++++++++++-------
commands/tftp.c | 2 +-
common/blspec.c | 2 +-
common/startup.c | 4 ++--
fs/fs.c | 19 +++++++++++++------
include/fs.h | 6 ++++--
lib/bootstrap/disk.c | 2 +-
11 files changed, 39 insertions(+), 25 deletions(-)
diff --git a/arch/arm/boards/raspberry-pi/rpi.c b/arch/arm/boards/raspberry-pi/rpi.c
index 0997124c01ec..03a16d75619d 100644
--- a/arch/arm/boards/raspberry-pi/rpi.c
+++ b/arch/arm/boards/raspberry-pi/rpi.c
@@ -126,7 +126,7 @@ static int rpi_env_init(void)
}
mkdir("/boot", 0666);
- ret = mount(diskdev, "fat", "/boot");
+ ret = mount(diskdev, "fat", "/boot", NULL);
if (ret) {
printf("failed to mount %s\n", diskdev);
return 0;
diff --git a/arch/arm/mach-omap/omap_generic.c b/arch/arm/mach-omap/omap_generic.c
index bedb4d8d2618..060c59277f4e 100644
--- a/arch/arm/mach-omap/omap_generic.c
+++ b/arch/arm/mach-omap/omap_generic.c
@@ -136,7 +136,7 @@ static int omap_env_init(void)
}
mkdir("/boot", 0666);
- ret = mount(diskdev, "fat", "/boot");
+ ret = mount(diskdev, "fat", "/boot", NULL);
if (ret) {
printf("failed to mount %s\n", diskdev);
return 0;
diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c
index 69e3e42df69d..a30945010990 100644
--- a/arch/arm/mach-omap/xload.c
+++ b/arch/arm/mach-omap/xload.c
@@ -110,7 +110,7 @@ static void *omap_xload_boot_mmc(void)
partname = asprintf("%s.0", diskdev);
- ret = mount(partname, "fat", "/");
+ ret = mount(partname, "fat", "/", NULL);
free(partname);
@@ -170,7 +170,7 @@ static void *omap4_xload_boot_usb(void){
void *buf;
int len;
- ret = mount("omap4_usbboot", "omap4_usbbootfs", "/");
+ ret = mount("omap4_usbboot", "omap4_usbbootfs", "/", NULL);
if (ret) {
printf("Unable to mount omap4_usbbootfs (%d)\n", ret);
return NULL;
diff --git a/arch/arm/mach-socfpga/generic.c b/arch/arm/mach-socfpga/generic.c
index 0d958d23af60..62593549d6e4 100644
--- a/arch/arm/mach-socfpga/generic.c
+++ b/arch/arm/mach-socfpga/generic.c
@@ -97,7 +97,7 @@ static int socfpga_env_init(void)
}
mkdir("/boot", 0666);
- ret = mount(partname, "fat", "/boot");
+ ret = mount(partname, "fat", "/boot", NULL);
if (ret) {
printf("failed to mount %s\n", diskdev);
goto out_free;
diff --git a/commands/mount.c b/commands/mount.c
index 2e9d4bef5e3f..691bc2911e8f 100644
--- a/commands/mount.c
+++ b/commands/mount.c
@@ -33,26 +33,31 @@ static int do_mount(int argc, char *argv[])
{
int opt;
int ret = 0, verbose = 0;
- struct fs_device_d *fsdev;
struct driver_d *drv;
const char *type = NULL;
const char *mountpoint, *dev;
+ const char *fsoptions = NULL;
- while ((opt = getopt(argc, argv, "t:va")) > 0) {
+ while ((opt = getopt(argc, argv, "ao:t:v")) > 0) {
switch (opt) {
+ case 'a':
+ mount_all();
+ break;
case 't':
type = optarg;
break;
+ case 'o':
+ fsoptions = optarg;
+ break;
case 'v':
verbose++;
break;
- case 'a':
- mount_all();
- break;
}
}
if (argc == optind) {
+ struct fs_device_d *fsdev;
+
for_each_fs_device(fsdev) {
printf("%s on %s type %s\n",
fsdev->backingstore ? fsdev->backingstore : "none",
@@ -84,7 +89,7 @@ static int do_mount(int argc, char *argv[])
if (!cdev)
return -ENOENT;
- path = cdev_mount_default(cdev);
+ path = cdev_mount_default(cdev, fsoptions);
if (IS_ERR(path))
return PTR_ERR(path);
@@ -108,7 +113,7 @@ static int do_mount(int argc, char *argv[])
mountpoint = argv[optind + 1];
}
- if ((ret = mount(dev, type, mountpoint))) {
+ if ((ret = mount(dev, type, mountpoint, fsoptions))) {
perror("mount");
return 1;
}
diff --git a/commands/tftp.c b/commands/tftp.c
index c83d1740e2f0..64cab2f0451d 100644
--- a/commands/tftp.c
+++ b/commands/tftp.c
@@ -72,7 +72,7 @@ static int do_tftpb(int argc, char *argv[])
goto err_free;
ip = net_get_serverip();
- ret = mount(ip_to_string(ip), "tftp", TFTP_MOUNT_PATH);
+ ret = mount(ip_to_string(ip), "tftp", TFTP_MOUNT_PATH, NULL);
if (ret)
goto err_rmdir;
diff --git a/common/blspec.c b/common/blspec.c
index 2244d5a8a868..df3c9c3c65da 100644
--- a/common/blspec.c
+++ b/common/blspec.c
@@ -276,7 +276,7 @@ static int blspec_scan_cdev(struct blspec *blspec, struct cdev *cdev)
if (type == filetype_mbr || type == filetype_gpt)
return -EINVAL;
- rootpath = cdev_mount_default(cdev);
+ rootpath = cdev_mount_default(cdev, NULL);
if (IS_ERR(rootpath))
return PTR_ERR(rootpath);
diff --git a/common/startup.c b/common/startup.c
index e8b9ea0216fe..0b5fe46adb50 100644
--- a/common/startup.c
+++ b/common/startup.c
@@ -89,9 +89,9 @@ device_initcall(register_default_env);
#if defined CONFIG_FS_RAMFS && defined CONFIG_FS_DEVFS
static int mount_root(void)
{
- mount("none", "ramfs", "/");
+ mount("none", "ramfs", "/", NULL);
mkdir("/dev", 0);
- mount("none", "devfs", "/dev");
+ mount("none", "devfs", "/dev", NULL);
return 0;
}
fs_initcall(mount_root);
diff --git a/fs/fs.c b/fs/fs.c
index 32dba8cf0abe..7a57bc0670bc 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1242,6 +1242,7 @@ static void fs_remove(struct device_d *dev)
}
free(fsdev->path);
+ free(fsdev->options);
if (fsdev == fs_dev_root)
fs_dev_root = NULL;
@@ -1316,13 +1317,18 @@ int fsdev_open_cdev(struct fs_device_d *fsdev)
* We do this by registering a new device on which the filesystem
* driver will match.
*/
-int mount(const char *device, const char *fsname, const char *_path)
+int mount(const char *device, const char *fsname, const char *_path,
+ const char *fsoptions)
{
struct fs_device_d *fsdev;
int ret;
char *path = normalise_path(_path);
- debug("mount: %s on %s type %s\n", device, path, fsname);
+ if (!fsoptions)
+ fsoptions = "";
+
+ debug("mount: %s on %s type %s, options=%s\n",
+ device, path, fsname, fsoptions);
if (fs_dev_root) {
fsdev = get_fsdevice_by_path(path);
@@ -1354,6 +1360,7 @@ int mount(const char *device, const char *fsname, const char *_path)
fsdev->dev.id = get_free_deviceid(fsdev->dev.name);
fsdev->path = xstrdup(path);
fsdev->dev.bus = &fs_bus;
+ fsdev->options = xstrdup(fsoptions);
ret = register_device(&fsdev->dev);
if (ret)
@@ -1711,7 +1718,7 @@ const char *cdev_get_mount_path(struct cdev *cdev)
* 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 *cdev_mount_default(struct cdev *cdev, const char *fsoptions)
{
const char *path;
char *newpath, *devpath;
@@ -1720,7 +1727,7 @@ const char *cdev_mount_default(struct cdev *cdev)
/*
* If this cdev is already mounted somewhere use this path
* instead of mounting it again to avoid corruption on the
- * filesystem.
+ * filesystem. Note this ignores eventual fsoptions though.
*/
path = cdev_get_mount_path(cdev);
if (path)
@@ -1731,7 +1738,7 @@ const char *cdev_mount_default(struct cdev *cdev)
devpath = asprintf("/dev/%s", cdev->name);
- ret = mount(devpath, NULL, newpath);
+ ret = mount(devpath, NULL, newpath, fsoptions);
free(devpath);
@@ -1761,6 +1768,6 @@ void mount_all(void)
struct cdev *cdev = &bdev->cdev;
list_for_each_entry(cdev, &bdev->dev->cdevs, devices_list)
- cdev_mount_default(cdev);
+ cdev_mount_default(cdev, NULL);
}
}
diff --git a/include/fs.h b/include/fs.h
index 856e00abb043..073641c74746 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -99,6 +99,7 @@ struct fs_device_d {
char *path;
struct device_d *parent_device;
struct list_head list;
+ char *options;
};
#define drv_to_fs_driver(d) container_of(d, struct fs_driver_d, drv)
@@ -140,7 +141,8 @@ int closedir(DIR *dir);
int symlink(const char *pathname, const char *newpath);
int readlink(const char *path, char *buf, size_t bufsiz);
-int mount (const char *device, const char *fsname, const char *path);
+int mount (const char *device, const char *fsname, const char *path,
+ const char *fsoptions);
int umount(const char *pathname);
/* not-so-standard functions */
@@ -197,7 +199,7 @@ 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);
+const char *cdev_mount_default(struct cdev *cdev, const char *fsoptions);
void mount_all(void);
#endif /* __FS_H */
diff --git a/lib/bootstrap/disk.c b/lib/bootstrap/disk.c
index 879d3315e8e3..527e4308979c 100644
--- a/lib/bootstrap/disk.c
+++ b/lib/bootstrap/disk.c
@@ -20,7 +20,7 @@ void* bootstrap_read_disk(char *dev, char *fstype)
int len;
char *path = "/";
- ret = mount(dev, fstype, path);
+ ret = mount(dev, fstype, path, NULL);
if (ret) {
bootstrap_err("mounting %s failed with %d\n", dev, ret);
return NULL;
--
1.8.5.2
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