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2020-07-31env: Add support for explicit write access listMarek Vasut1-1/+5
This option marks any U-Boot variable which does not have explicit 'w' writeable flag set as read-only. This way the environment can be locked down and only variables explicitly configured to be writeable can ever be changed by either 'env import', 'env set' or loading user environment from environment storage. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-09-04env: net: U_BOOT_ENV_CALLBACKs should not depend on CMD_NETHeinrich Schuchardt1-1/+1
Some environment variables are relevant for networking. For these U_BOOT_ENV_CALLBACKs have been defined. When the corresponding environment variable is updated the callback updates the state of the network sub-system. In the UEFI subsystem we can use the network even if CONFIG_CMD_NET is not defined. Let the usage of the U_BOOT_ENV_CALLBACKs depend on CONFIG_NET and not on CONFIG_CMD_NET. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11env: Drop the ENTRY typedefSimon Glass1-3/+3
U-Boot is not supposed to use typedef for structs anymore. Also this name is the same as the ENTRY() macro used in assembler files, and 'entry' itself is widely used in U-Boot (>8k matches). Drop the typedef and rename the struct to env_entry to reduce confusion. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11env: Move env_set() to env.hSimon Glass1-0/+1
Move env_set() over to the new header file. Acked-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2019-01-24net: fix env flags for eth10addr and aboveSimon Goldschmidt1-1/+1
With CONFIG_REGEX enabled, ETHADDR_WILDCARD is set up for up to 10 interfaces (0..9) as the number can only have one digit. On boards with more than 10 interfaces, this leads to the protection and format checks being absent for eth10addr and above. Fix this by changing ETHADDR_WILDCARD from "\\d?" to "\\d*" to allow more than one digit. Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini1-2/+1
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2016-05-03net: fix vlan validationStefan Agner1-2/+2
VLAN identifiers are 12-bit decimal numbers, not IP addresses. Signed-off-by: Stefan Agner <stefan@agner.ch> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-02-08tools: env validate: pass values as 0-based arrayAndreas Fenkart1-1/+1
passing argv/argc can produce off-by-one errors Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
2015-09-21common/env_flags.c: Add function to validate a MAC addressCodrin Ciubotariu1-0/+7
The code that checks if a string has the format of a MAC address has been moved to a separate function called eth_validate_ethaddr_str(). This has been done to allow other components (such as vsc9953 driver) to validate a MAC address. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: York Sun <yorksun@freescale.com>
2015-05-21net: Add default flags for common net env varsJoe Hershberger1-1/+11
Check that the common network stack's env vars conform to the proper format for IP addresses. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21net: Apply default format rules to all ethaddrJoe Hershberger1-3/+8
Use a regular expression to apply the default formatting flags for all ethaddr env vars. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk1-17/+1
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2012-12-13env: Handle write-once ethaddr and serial# genericallyJoe Hershberger1-0/+22
Use the variable access flags to implement the protection for ethaddr and serial# instead of hard-coding them. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-13env: Add support for access control to .flagsJoe Hershberger1-3/+47
Add support for read-only, write-once, and change-default. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-13env: Add a command to display details about env flagsJoe Hershberger1-0/+11
Similar to the env callback command, this will show details about the options available, the static list, and the currently active variables. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-13tools/env: Add environment variable flags supportJoe Hershberger1-0/+19
Currently just validates variable types as decimal, hexidecimal, boolean, ip address, and mac address. Call env_acl_validate_setenv_params() from setenv() in fw_env.c. If the entry is not found in the env .flags, then look in the static one. This allows the env to override the static definitions, but prevents the need to have every definition in the environment distracting you. Need to build in _ctype for isdigit for Linux. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-13env: Add environment variable flagsJoe Hershberger1-0/+76
Currently just validates variable types as decimal, hexidecimal, boolean, ip address, and mac address. If the entry is not found in the env ".flags", then look in the static one. This allows the env to override the static definitions, but prevents the need to have every definition in the environment distracting you. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
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