Commit graph

153 commits

Author SHA1 Message Date
Alex Kiernan
dbc3432379 tools: env: Implement atomic replace for filesystem
If the U-Boot environment is stored in a regular file and redundant
operation isn't set, then write to a temporary file and perform an
atomic rename.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-03-19 16:14:19 -04:00
Alex Kiernan
899b5338fa tools: env: Refactor write path of flash_io()
Extract write path of flash_io() into a separate function. This patch
should be a functional no-op.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
2018-03-19 16:14:19 -04:00
Alex Kiernan
2deb3cac08 tools: env: Fix CamelCasing style violation
Replace HaveRedundEnv with have_redund_env to fix style violation.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-03-19 16:14:19 -04:00
Alex Kiernan
c7f52c4b6e tools: env: Pass through indent
Pass tools/env/fw_env.c through indent to correct style violations. This
commit consists of only one non-whitespace change:

  tools/env/fw_env.c:549: error: do not use assignment in if condition

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-03-19 16:14:19 -04:00
Stefan Agner
cd655514aa tools/env: allow equal sign as key value separation
Treat the first equal sign as a key/value separation too. This makes
the script files compatible with mkenvimage input file format. It
won't support variables with equal signs anymore, but this seems not
really like a loss.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
2018-03-05 10:05:36 -05:00
Alex Kiernan
d877a6c50e Fix --noheader on fw_printenv
The single argument `--noheader' is expecting isn't taken from getopt
parsing, but instead from the remaining argv arguments.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-02-14 12:14:15 -05:00
Jelle van der Waa
9e82087cef tools: remove unused ret
Remove unused ret from fw_env_flush.

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-01-28 09:39:15 -05:00
S. Lockwood-Childs
34255b92e6 tools: env: Add support for direct read/write UBI volumes
Up to now we were able to read/write environment data from/to UBI
volumes only indirectly by gluebi driver. This driver creates NAND MTD
on top of UBI volumes, which is quite a workaroung for this use case.

Add support for direct read/write UBI volumes in order to not use
obsolete gluebi driver.

Forward-ported from this patch:
http://patchwork.ozlabs.org/patch/619305/

Original patch:
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>

Forward port:
Signed-off-by: S. Lockwood-Childs <sjl@vctlabs.com>
2017-11-29 22:30:50 -05:00
Tom Rini
c6831c74a9 env: Remove CONFIG_ENV_AES support
This support has been deprecated since v2017.09 due to security issues.
We now remove this support.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-11-21 07:43:31 -05:00
Stefan Agner
84d46e7e89 tools: env: allow to print U-Boot version
The fw_env utility family has a default environment compiled in
which ties it quite strongly to the U-Boot source/config it has
been built with. Allow to display the U-Boot version it has been
built with using the -v/--version argument.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
2017-11-06 09:58:59 -05:00
Bin Meng
3b306c37cd tools: env: Add embedded.c to .gitignore
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-10-16 09:42:51 -04:00
Simon Glass
84a42069f2 env: Add 'envtools' target to 'make help'
The target is not currently mentioned anywhere. Add it to the help so
people can find it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-09-05 20:34:09 -04:00
Simon Glass
5733295714 env: Fix operation of 'make environ'
This was broken by the recent environment refactoring. Specifically:

$  make environ
scripts/Makefile.build:59: tools/environ/Makefile: No such file or directory
make[1]: *** No rule to make target 'tools/environ/Makefile'.  Stop.
make: *** [Makefile:1469: environ] Error 2

Fix this by updating the Makefile and adjusting the #include filesnames in
two C files.

Fixes: ec74f5f (Makefile: Rename 'env' target to 'environ')
Reported-by: Måns Rullgård <mans@mansr.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-09-05 20:34:08 -04:00
Tom Rini
2d3229bea2 env: Fix out of tree building of tools-all
With the move of environment code from common/ to env/ a number of
changes needed to be made to various make targets.  We missed updating
some of the files required for out of tree builds of the tools.  Correct
the 'environ' target to know that we need to work under tools/env/ still
(not tools/environ/) and then update the wrappers in env_attr.c and
env_flags.c to point to the new correct file.

Reported-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-05 15:59:47 -04:00
Lukasz Majewski
40fe89c6e8 fix: fw_env: Prevent writing error message on special files, which don't support fsync
According to fsync specification [1] some special files (e.g., a pipe, FIFO,
or socket) don't support synchronization and return either EROFS or EINVAL.

On the linux side the sys_fsync -> do_fsync() checks if the requested file
has f_op->fsync defined. If not it returns EINVAL [2].

This commit prevents writing error messages for files (devices), which
do not support fsync().

[1] - http://man7.org/linux/man-pages/man2/fsync.2.html
[2] - http://elixir.free-electrons.com/linux/v4.13-rc6/source/fs/sync.c#L183

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Michael Heimpold <mhei@heimpold.de>
2017-09-03 15:30:31 -04:00
Simon Glass
382bee57f1 env: Rename setenv() to env_set()
We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:22:18 -04:00
Michael Heimpold
7e99e14d4b tools/fw_env: use fsync to ensure that data is physically stored
Closing a file descriptor does not guarantee that the data has been
successfully saved to disk, as the kernel might defer the write.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
2017-07-22 15:36:16 -04:00
xypron.glpk@gmx.de
ddc6a9de05 tools/env: avoid memory leak in fw_setenv
If realloc fails we should release the old buffer.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-04-18 10:29:22 -04:00
Stefano Babic
33f0086cb7 env: fix memory leak in fw_env routines
fw_env_open allocates buffers to store the environment, but these
buffers are never freed. This becomes quite nasty using the fw_ tools as
library, because each access to the environment (even just reading a
variable) generates a memory leak equal to the size of the environment.

Fix this renaming fw_env_close() as fw_env_flush(), because the function
really flushes the environment from RAM to storage, and add a
fw_env_close function to free the allocated resources.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2017-04-12 13:28:29 -04:00
Stefano Babic
00c234f38f env: add a version number to check API
Changes in the environment library are difficult to tracked by programs
using the library. Add simply an API version number that must be
increased each time when the API is changed.

This can be detected and a program can work with different versions of
the library.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2017-04-12 13:28:29 -04:00
Stefano Babic
9d80b49a67 env: split fw_env.h in public and private parts
Move U-Boot private data into a separate file. This
lets export fw_env.h to be used by external programs
that want to change the environment using the library
built in tools/env.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2017-04-12 13:28:28 -04:00
Stefano Babic
b80c0b9934 Rename aes.h to uboot_aes.h
aes.h is a too generic name if this file can
be exported and used by a program.
Rename it to avoid any conflicts with
other files (for example, from openSSL).

Signed-off-by: Stefano Babic <sbabic@denx.de>
2017-04-12 13:28:27 -04:00
Masahiro Yamada
3b0825296a tools: fix cross-compiling tools when HOSTCC is overridden
Richard reported U-Boot tools issues in OpenEmbedded/Yocto project.

OE needs to be able to change the default compiler. If we pass in
HOSTCC through the make command, it overwrites all HOSTCC instances,
including ones in tools/Makefile and tools/env/Makefile, which breaks
"make cross_tools" and "make env", respectively.

Add "override" directives to avoid overriding HOSTCC instances that
really need to point to the cross-compiler.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reported-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-03-14 20:40:22 -04:00
Max Krummenacher
333ee16d04 tools/env: fix environment alignment tests for block devices
commit 183923d3e4 enforces that the
environment must start at an erase block boundary.

For block devices the sample fw_env.config does not mandate a erase block size
for block devices. A missing setting defaults to the full env size.

Depending on the environment location the alignment check now errors out for
perfectly legal settings.

Fix this by defaulting to the standard blocksize of 0x200 for environments
stored in a block device.
That keeps the fw_env.config files for block devices working even with that
new check.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
2016-11-28 15:10:36 -05:00
B, Ravi
d40dbfb740 env: tool: add command line option to input lockfile path
The default lockname is set to /var/lock. This limits the
usage of this application where OS uses different lockfile
location parameter.
For example, In case of android, the default lock
path location is /data.
Hence by providing the command line option to input lockfile
path will be useful to reuse the tool across multiple
operating system.

usage: ./fw_printenv -l <lockfile path>

Signed-off-by: Ravi Babu <ravibabu@ti.com>
2016-10-08 09:33:34 -04:00
Andreas Fenkart
24307d6337 Suspected Spam: Do not open attachements![PATCH 4/6] tools/env: flash_write_buf: enforce offset to be start of environment
This allows to take advantage of the environment being block aligned.
This is not a new constraint. Writes always start at the begin of the
environment, since the header with CRC/length as there.
Every environment modification requires updating the header

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-10-06 20:57:35 -04:00
Andreas Fenkart
ff95e579cf tools/env: lookup dev_type directly from flash_read_buf/flash_write_buf
flash_write_buf already looks up size/offset/#sector from struct
envdev_s. It can look up mtd_type as well. Same applies to
flash_read_buf. Makes the interface simpler

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-10-06 20:57:35 -04:00
Andreas Fenkart
c6012bbce6 tools/env: pass bad block offset by value
the offset is not modified by linux ioctl call
see mtd_ioctl{drivers/mtd/mtdchar.c}
Makes the interface less ambiguous, since the caller can
now exclude a modification of blockstart

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-10-06 20:57:34 -04:00
Andreas Fenkart
e2c9351d5a tools/env: factor out environment_end function
instead of adhoc computation of the environment end,
use a function with a proper name

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-10-06 20:57:34 -04:00
Andreas Fenkart
4ed6f4318b tools/env: soften warning about erase block alignment
addon 183923d3e
MMC/SATA have no erase blocks, only blocks. Hence the warning
about erase block alignment might be confusing in such environment.

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-20 14:03:27 -04:00
Andreas Fenkart
490365c38f tools/env: return with error if redundant environments have unequal size
For double buffering to work, the target buffer must always be big
enough to hold all data. This can only be ensured if buffers are of
equal size, otherwise one must be smaller and we risk data loss
when copying from the bigger to the smaller buffer.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-20 14:03:26 -04:00
Andreas Fenkart
183923d3e4 tools/env: ensure environment starts at erase block boundary
56086921 added support for unaligned environments access.
U-boot itself does not support this:
- env_nand.c fails when using an unaligned offset. It produces an
  error in nand_erase_opts{drivers/mtd/nand/nand_util.c}
- in env_sf/env_flash the unused space at the end is preserved, but
  not in the beginning. block alignment is assumed
- env_sata/env_mmc aligns offset/length to the block size of the
  underlying device. data is silently redirected to the beginning of
  a block

There is seems no use case for unaligned environment. If there is
some useful data at the beginning of the the block (e.g. end of u-boot)
that would be very unsafe. If the redundant environments are hosted by
the same erase block then that invalidates the idea of double buffering.
It might be that unaligned access was allowed in the past, and that
people with legacy u-boot are trapped. But at the time of 56086921
it wasn't supported and due to reasons above I guess it was never
introduced.
I prefer to remove that (unused) feature in favor of simplicity

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
2016-08-15 18:46:40 -04:00
Marcin Niestroj
81c878dd3c tools: env: Fix format warnings in debug
Format warnings (-Wformat) were shown in printf() calls after defining
DEBUG macro.

Update format string and explicitly cast variables to suppress all
warnings.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2016-07-26 08:28:39 +02:00
Andreas Fenkart
c5c41c45b1 tools/env: reuse fw_getenv in fw_printenv function
Try to avoid adhoc iteration of the environment. Reuse fw_getenv
to find the variables that should be printed. Only use open-coded
iteration when printing all variables.
For backwards compatibility, keep emitting a newline when
printing with value_only.

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-07-22 14:46:22 -04:00
Andreas Fenkart
1b7427cd2a tools/env: move envmatch further up in file to avoid forward declarations
forward declaration not needed when re-ordered

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-07-22 14:46:22 -04:00
Andreas Fenkart
fd4e3280e5 tools/env: kernel-doc for fw_printenv, fw_getenv and fw_parse_script
there are two groups of functions:
- application ready tools: fw_setenv/fw_getenv/fw_parse_script
these are used, when creating a single binary containing multiple
tools (busybox like)
- file access like: open/read/write/close
above functions are implemented on top of these. applications
can use those to modify several variables without creating a
temporary batch script file
tested with "./scripts/kernel-doc -html -v tools/env/fw_env.h"

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-07-22 14:46:21 -04:00
Stefan Agner
f4742ca0fb tools/env: allow negative offsets
A negative value for the offset is treated as a backwards offset for
from the end of the device/partition for block devices. This aligns
the behavior of the config file with the syntax of CONFIG_ENV_OFFSET
where the functionality has been introduced with
commit 5c088ee841 ("env_mmc: allow negative CONFIG_ENV_OFFSET").

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
2016-07-22 14:46:20 -04:00
Stefan Agner
14fb5b252a tools/env: complete environment device config early
Currently flash_read completes a crucial part of the environment
device configuration, the device type (mtd_type). This is rather
confusing as flash_io calls flash_read conditionally, and one might
think flash_write, which also makes use of mtd_type, gets called
before flash_read. But since flash_io is always called with O_RDONLY
first, this is not actually the case in reality.

However, it is much cleaner to complete and verify the config early
in parse_config. This also prepares the code for further extension.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Andreas Fenkart
2016-07-22 14:46:20 -04:00
Robert P. J. Day
62a3b7dd08 Various, unrelated tree-wide typo fixes.
Fix a number of typos, including:

     * "compatble" -> "compatible"
     * "eanbeld" -> "enabled"
     * "envrionment" -> "environment"
     * "FTD" -> "FDT" (for "flattened device tree")
     * "ommitted" -> "omitted"
     * "overriden" -> "overridden"
     * "partiton" -> "partition"
     * "propogate" -> "propagate"
     * "resourse" -> "resource"
     * "rest in piece" -> "rest in peace"
     * "suport" -> "support"
     * "varible" -> "variable"

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2016-07-16 09:43:12 -04:00
Andreas Fenkart
14070e69ad tools/env: allow to pass NULL for environment options
If users of the library are happy with the default, e.g. config file
name. They can pass NULL as the opts pointer. This simplifies the
transition of existing library users.
FIXES a compile error. since common_args has been removed by
a previous patch

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-31 10:23:10 -04:00
Andreas Fenkart
81974f4479 tools/env: no global variable sharing between application and library
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-27 15:39:56 -04:00
Andreas Fenkart
f71cee4bfc tools/env: compute size of usable area only once
for double buffering to work, redundant buffers must have equal size

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-27 09:56:19 -04:00
Andreas Fenkart
cedb341e7f tools/env: fw_printenv pass value_only as argument
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-27 09:56:19 -04:00
Andreas Fenkart
c3a23e8b5f tools/env: remove 'extern' from function prototype in fw_env.h
checkpatch complains about in succeding patch. Prefer to fix all
declarations in a dedicated patch.

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-27 09:56:18 -04:00
Andreas Fenkart
dcdc1f6a9b tools/env: pass key as argument to env_aes_cbc_crypt
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-05-27 09:56:17 -04:00
Anatolij Gustschin
925c97c248 tools: env: fix config file loading in env library
env library is broken as the config file pointer is only initialized
in main(). When running in the env library parse_config() fails:

  Cannot parse config file '(null)': Bad address

Ensure that config file pointer is always initialized.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
2016-05-02 18:37:10 -04:00
Andreas Fenkart
43cb65b7a0 tools: env: bug: config structs must be defined in tools library
fw_senten/fw_printenv can be compiled as a tools library,
excluding the fw_env_main object.

Reported-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-03-27 09:13:03 -04:00
Andreas Fenkart
69067a34b1 tools: env: fw_parse_script: simplify removal of newline/carriage return
fgets returns when the first '\n' is found

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-03-26 18:49:29 -04:00
Andreas Fenkart
938c29ff41 tools: env: split fw_string_blank into skip_chars / skip_blanks
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-03-26 18:49:29 -04:00
Andreas Fenkart
9583efcc74 tools: env: fw_string_blank: return from loop when item found
Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2016-03-26 18:49:29 -04:00