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| author | Corentin Chary <corentincj@iksaif.net> | 2009-01-05 14:48:59 +0100 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-01-18 14:02:08 +0200 |
| commit | a27ce8f55dd5fddf0b8ea179cce8f399c13dc94f (patch) | |
| tree | ce20328f8c29c8ba98446799aeb8412056dcef71 | |
| parent | c3da23be1673be4e738aea235604b4e6cb259655 (diff) | |
| download | linux-a27ce8f55dd5fddf0b8ea179cce8f399c13dc94f.tar.bz2 | |
UBI: add ioctl for is_mapped operation
This patch adds ioctl to check if an LEB is mapped or not (as a
debugging option so far).
[Re-named ioctl to make it look the same as the other one and made
some minor stylistic changes. Artem Bityutskiy.]
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| -rw-r--r-- | drivers/mtd/ubi/cdev.c | 14 | ||||
| -rw-r--r-- | include/mtd/ubi-user.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index fd7e0f923b38..9ddbade72887 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -546,6 +546,20 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, err = ubi_leb_unmap(desc, lnum); break; } + + /* Check if logical eraseblock is mapped command */ + case UBI_IOCEBISMAP: + { + int32_t lnum; + + err = get_user(lnum, (__user int32_t *)argp); + if (err) { + err = -EFAULT; + break; + } + err = ubi_is_mapped(desc, lnum); + break; + } #endif default: diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index ee2ea2e224af..5828d7879199 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -137,6 +137,8 @@ #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) /* Unmap an eraseblock, used for debugging, disabled by default */ #define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) +/* Check if an eraseblock is mapped, used for debugging, disabled by default */ +#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t) /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 |