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kernel: make ubi auto-attach check for a tar file magic 

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 43506
lede-17.01
John Crispin 2014-12-03 14:32:38 +00:00
parent 68909fb081
commit a10a204aab
3 changed files with 40 additions and 6 deletions
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15
target/linux/generic/patches-3.10/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
View File

@ -11,7 +11,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
--- a/drivers/mtd/ubi/build.c --- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c
@@ -1207,6 +1207,36 @@ static struct mtd_info * __init open_mtd @@ -1207,6 +1207,47 @@
return mtd; return mtd;
} }
@ -29,6 +29,17 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ mtd = open_mtd_device("data"); + mtd = open_mtd_device("data");
+ +
+ if (!IS_ERR(mtd)) { + if (!IS_ERR(mtd)) {
+ size_t len;
+ char magic[6];
+
+ /* check for a tar file magic */
+ err = mtd_read(mtd, 261, 6, &len, (void *) magic);
+ if (!err && len == 6 && !strncmp(magic, "ustar", 5)) {
+ ubi_err("cannot attach mtd%d as there is a valid tar magic", mtd->index);
+ put_mtd_device(mtd);
+ return;
+ }
+
+ /* auto-add only media types where UBI makes sense */ + /* auto-add only media types where UBI makes sense */
+ if (mtd->type == MTD_NANDFLASH || + if (mtd->type == MTD_NANDFLASH ||
+ mtd->type == MTD_DATAFLASH || + mtd->type == MTD_DATAFLASH ||
@ -48,7 +59,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
static int __init ubi_init(void) static int __init ubi_init(void)
{ {
int err, i, k; int err, i, k;
@@ -1290,6 +1320,12 @@ static int __init ubi_init(void) @@ -1290,6 +1331,12 @@
} }
} }

16
target/linux/generic/patches-3.14/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
View File

@ -11,7 +11,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
--- a/drivers/mtd/ubi/build.c --- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c
@@ -1209,6 +1209,36 @@ static struct mtd_info * __init open_mtd @@ -1209,6 +1209,48 @@
return mtd; return mtd;
} }
@ -23,12 +23,24 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+{ +{
+ int err; + int err;
+ struct mtd_info *mtd; + struct mtd_info *mtd;
+
+ /* try attaching mtd device named "ubi" or "data" */ + /* try attaching mtd device named "ubi" or "data" */
+ mtd = open_mtd_device("ubi"); + mtd = open_mtd_device("ubi");
+ if (IS_ERR(mtd)) + if (IS_ERR(mtd))
+ mtd = open_mtd_device("data"); + mtd = open_mtd_device("data");
+ +
+ if (!IS_ERR(mtd)) { + if (!IS_ERR(mtd)) {
+ size_t len;
+ char magic[6];
+
+ /* check for a tar file magic */
+ err = mtd_read(mtd, 261, 6, &len, (void *) magic);
+ if (!err && len == 6 && !strncmp(magic, "ustar", 5)) {
+ ubi_err("cannot attach mtd%d as there is a valid tar magic", mtd->index);
+ put_mtd_device(mtd);
+ return;
+ }
+
+ /* auto-add only media types where UBI makes sense */ + /* auto-add only media types where UBI makes sense */
+ if (mtd->type == MTD_NANDFLASH || + if (mtd->type == MTD_NANDFLASH ||
+ mtd->type == MTD_DATAFLASH || + mtd->type == MTD_DATAFLASH ||
@ -48,7 +60,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
static int __init ubi_init(void) static int __init ubi_init(void)
{ {
int err, i, k; int err, i, k;
@@ -1298,6 +1328,12 @@ static int __init ubi_init(void) @@ -1298,6 +1340,12 @@
} }
} }

15
target/linux/generic/patches-3.18/490-ubi-auto-attach-mtd-device-named-ubi-or-data-on-boot.patch
View File

@ -11,7 +11,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
--- a/drivers/mtd/ubi/build.c --- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c
@@ -1209,6 +1209,36 @@ static struct mtd_info * __init open_mtd @@ -1209,6 +1209,47 @@
return mtd; return mtd;
} }
@ -29,6 +29,17 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ mtd = open_mtd_device("data"); + mtd = open_mtd_device("data");
+ +
+ if (!IS_ERR(mtd)) { + if (!IS_ERR(mtd)) {
+ size_t len;
+ char magic[6];
+
+ /* check for a tar file magic */
+ err = mtd_read(mtd, 261, 6, &len, (void *) magic);
+ if (!err && len == 6 && !strncmp(magic, "ustar", 5)) {
+ ubi_err("cannot attach mtd%d as there is a valid tar magic", mtd->index);
+ put_mtd_device(mtd);
+ return;
+ }
+
+ /* auto-add only media types where UBI makes sense */ + /* auto-add only media types where UBI makes sense */
+ if (mtd->type == MTD_NANDFLASH || + if (mtd->type == MTD_NANDFLASH ||
+ mtd->type == MTD_DATAFLASH || + mtd->type == MTD_DATAFLASH ||
@ -48,7 +59,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
static int __init ubi_init(void) static int __init ubi_init(void)
{ {
int err, i, k; int err, i, k;
@@ -1298,6 +1328,12 @@ static int __init ubi_init(void) @@ -1298,6 +1339,12 @@
} }
} }