u-boot.git/lib/hashtable.c, branch v2020.10

env: Add support for explicit write access list

2020-07-31T14:13:00+00:00

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 
Reviewed-by: Tom Rini

env: Add option to only ever append environment

2020-07-31T14:13:00+00:00

Add configuration option which prevents the environment hash table to be
ever cleared and reloaded with different content. This is useful in case
the first environment loaded into the hash table contains e.g. sensitive
content which must not be dropped or reloaded.

Signed-off-by: Marek Vasut 
Reviewed-by: Tom Rini

lib: Always set errno in hcreate_r

2020-07-01T07:01:21+00:00

This could give a confusing error message if it failed and didn't set
errno.

Signed-off-by: Sean Anderson 
Reviewed-by: Bin Meng

common: Drop log.h from common header

2020-05-19T01:19:18+00:00

Move this header out of the common header.

Signed-off-by: Simon Glass

command: Remove the cmd_tbl_t typedef

2020-05-18T22:36:55+00:00

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass

make env_entry::callback conditional on !CONFIG_SPL_BUILD

2020-04-24T14:09:59+00:00

The callback member of struct env_entry is always NULL for an SPL
build. Removing it thus saves a bit of run-time memory in the
SPL (when CONFIG_SPL_ENV_SUPPORT=y) since struct env_entry is embedded
in struct env_entry_node - i.e. about 2KB for the normal case of
512+change hash table entries.

Two small fixups are needed for this, all other references to the
callback member are already under !CONFIG_SPL_BUILD: Don't initialize
.callback in set_flags() - hsearch_r doesn't use that value
anyway. And make env_callback_init() initialize ->callback to NULL for
a new entry instead of relying on an unused or deleted entry having
NULL in ->callback.

Signed-off-by: Rasmus Villemoes 
Reviewed-by: Simon Glass

lib/hashtable.c: don't test ->callback in SPL

2020-04-24T14:09:59+00:00

In SPL, environment callbacks are not supported, so e->callback is
always NULL. Removing this makes the SPL a little smaller (about 400
bytes in my ppc build) with no functional change.

Signed-off-by: Rasmus Villemoes 
Reviewed-by: Simon Glass

lib/hashtable.c: create helper for calling env_entry::callback

2020-04-24T14:09:59+00:00

This is preparation for compiling out the "call the callback" code and
associated error handling for SPL, where ->callback is always NULL.

Signed-off-by: Rasmus Villemoes 
Reviewed-by: Simon Glass

common: Move sorting functions to their own header file

2019-12-02T23:23:08+00:00

These don't need to be in common.h so move them out into a new header.
Also add some missing comments.

Signed-off-by: Simon Glass 
Reviewed-by: Tom Rini

env: Drop the ACTION typedef

2019-08-11T20:43:41+00:00

Avoid using a typedef here which is unnecessary. Add an 'env_' prefix to
both the enum and its members to make it clear that these are related to
the environment.

Add an ENV prefix to these two flags so that it is clear what they relate
to. Also move them to env.h since they are part of the public API. Use an
enum rather than a #define to tie them together.

Signed-off-by: Simon Glass