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authorBoris Brezillon <boris.brezillon@free-electrons.com>2016-09-16 17:59:22 +0300
committerRichard Weinberger <richard@nod.at>2016-10-02 23:48:14 +0300
commit9a5f09ac0ab83e4a965a24edd6cf7cb0303c6dc9 (patch)
tree585c31efc8dc614a7bc705f73cfb8c69ae728913 /drivers/mtd/ubi
parent2d78aee426d821bbecbc80ee96ada5730ee68b6f (diff)
downloadlinux-9a5f09ac0ab83e4a965a24edd6cf7cb0303c6dc9.tar.xz
UBI: add an helper to check lnum validity
ubi_leb_valid() is here to replace the lnum < 0 || lnum >= vol->reserved_pebs checks. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r--drivers/mtd/ubi/cdev.c4
-rw-r--r--drivers/mtd/ubi/kapi.c12
-rw-r--r--drivers/mtd/ubi/ubi.h5
3 files changed, 13 insertions, 8 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 3490dcd99ad1..45c329694a5e 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -454,7 +454,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
/* Validate the request */
err = -EINVAL;
- if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||
+ if (!ubi_leb_valid(vol, req.lnum) ||
req.bytes < 0 || req.bytes > vol->usable_leb_size)
break;
@@ -485,7 +485,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
break;
}
- if (lnum < 0 || lnum >= vol->reserved_pebs) {
+ if (!ubi_leb_valid(vol, lnum)) {
err = -EINVAL;
break;
}
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index a9e2cef7c95c..cec7f65beb9e 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -538,7 +538,7 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
+ if (!ubi_leb_valid(vol, lnum) || offset < 0 || len < 0 ||
offset + len > vol->usable_leb_size ||
offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
return -EINVAL;
@@ -583,7 +583,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
+ if (!ubi_leb_valid(vol, lnum) || len < 0 ||
len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
return -EINVAL;
@@ -620,7 +620,7 @@ int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum)
if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- if (lnum < 0 || lnum >= vol->reserved_pebs)
+ if (!ubi_leb_valid(vol, lnum))
return -EINVAL;
if (vol->upd_marker)
@@ -680,7 +680,7 @@ int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum)
if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- if (lnum < 0 || lnum >= vol->reserved_pebs)
+ if (!ubi_leb_valid(vol, lnum))
return -EINVAL;
if (vol->upd_marker)
@@ -716,7 +716,7 @@ int ubi_leb_map(struct ubi_volume_desc *desc, int lnum)
if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- if (lnum < 0 || lnum >= vol->reserved_pebs)
+ if (!ubi_leb_valid(vol, lnum))
return -EINVAL;
if (vol->upd_marker)
@@ -751,7 +751,7 @@ int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum)
dbg_gen("test LEB %d:%d", vol->vol_id, lnum);
- if (lnum < 0 || lnum >= vol->reserved_pebs)
+ if (!ubi_leb_valid(vol, lnum))
return -EINVAL;
if (vol->upd_marker)
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index b51d398f2356..23c902e204aa 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -843,6 +843,11 @@ void ubi_update_reserved(struct ubi_device *ubi);
void ubi_calculate_reserved(struct ubi_device *ubi);
int ubi_check_pattern(const void *buf, uint8_t patt, int size);
+static inline bool ubi_leb_valid(struct ubi_volume *vol, int lnum)
+{
+ return lnum >= 0 && lnum < vol->reserved_pebs;
+}
+
/* eba.c */
int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum);