Kconfig

config USR_LIB_STD
  bool  "EwoK standard libc library interface"
  default y
  ---help---
  Support for basic libc primitves and various embedded
  devices specific API over EwoK kernel.


# no specific config for libstd by now
menu "Libstd configuration"

menu "POSIX Compliance"

config STD_POSIX_SYSV_MSQ
  bool "Support for SystemV Message queues"
  select STD_MALLOC
  default y
  ---help---
  Support for SystemV Message queues (msgget(),msgsnd()
  and msgrcv() API from the SystemV and POSIX standard.

if STD_POSIX_SYSV_MSQ
  config STD_POSIX_SYSV_MSQ_DEPTH
  int "SystemV Message queue depth"
  range 1 16
  default 1
  ---help---
  SystemV message queue maximum supported queue depth.
  Beware that the queue depth is consuming a lot of memory.

endif

config STD_POSIX_RAND
   bool "Support for POSIX (s)rand(_r) API (not secure!)"
   default n
   ---help---
   Support for POSIX and ISO C compliant rand familly functions
   rand(), rand_r() and srand().

config STD_POSIX_TIMER
   bool "Support for POSIX timers"
   default n
   ---help---
   Support for POSIX timers (timer_create(), timer_settime()) API.
   Only the CLOCK_MONOLITIC clockid is supported when no RTC exists.
   Only SIGEV_THREAD notify mode is supported by now.

config STD_POSIX_USLEEP_INT_AS_SIGNAL
   bool "uSleep can be interrupted by ISR handlers"
   default n
   ---help---
   For usleep() API, consider ISR like signals, interrupting usleep() calls,
   returning EINTR in errno when an ISR generates a thread awakening.


endmenu

config STD_DRBG
   bool "Support DRBG for secure random generation"
   default y
  ---help---
  Support for DRBG to have a secure entropy processing
  algorithm compatible with the NIST SP800-90A standard.
  If DRBG is not selected, the platform TRNG is used as
  the raw random generator, which NOT a good practice.

if STD_DRBG
menu "DRBG configuration"

choice
   prompt "DRBG secure RNG backends"
   default USR_LIB_DRBG_USE_HMAC_DRBG
   config USR_LIB_DRBG_USE_HMAC_DRBG
   bool "HMAC DRBG"
   ---help---
      HMAC-DRBG as standardized by NIST SP800-90A
endchoice

config STD_DRBG_ENTROPY_CPU_CYCLES
   bool "Use the platform cycles counter as an additional entropy source"
   default n
   ---help---
      Use the platform cycle counter as an entropy source
      for the DRBG (in addition to the TRNG)

endmenu
endif


config STD_SANITIZE_HANDLERS
   bool "Support handlers and callbacks sanitization"
   default y
  ---help---
      Bring function pointers (handlers and callbacks) sanitization
      to limit memory corruption attacks.


config STD_MALLOC
   bool "Support for libstd malloc/free"

if STD_MALLOC

choice
   prompt "Malloc type"
   default STD_MALLOC_LIGHT
   config STD_MALLOC_LIGHT
   bool "lightway unsecure allocator"
   ---help---
      basic allocator without canaries
   config STD_MALLOC_STD
   bool "secure allocator"
   ---help---
      secure allocator with canaries
   config STD_MALLOC_BINS # A conserver ?
   bool "secure allocator with bins"
   ---help---
      secure allocator with canaries and bins
endchoice

config STD_MALLOC_SIZE_LEN
   int "sizes and offset length (in bits)"
   range 16 32
   default 16
   ---help---
      TODO

config STD_MALLOC_ALIGN
   int "sizes alignment (in bytes)"
   range 1 64
   default 1
   ---help---
      TODO

config STD_MALLOC_MUTEX
   bool "allocator with mutex (EXPERIMENTAL)"
   default n
   ---help---
      TODO

config STD_MALLOC_CHECK_IF_NULL
   int "ptr must be null for allocation"
   range 0 1
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
   default 0
   ---help---
      TODO

config STD_MALLOC_DBLE_WAY_SEARCH # A conserver ?
   int "allocator search mode optimization"
   range 0 1
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
   default 0
   ---help---
      TODO

config STD_MALLOC_FREEMEM_CHECK # A conserver ?
  int "allocator free memory checking"
  range 0 2
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
  default 0
   ---help---
      TODO

config STD_MALLOC_BASIC_CHECKS
   int "allocator basic integrity check"
   range 0 2
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
   default 0
   ---help---
      TODO

config STD_MALLOC_NB_CANARIES
   int
   depends on STD_MALLOC_BINS
   default 2
   ---help---
      TODO

config STD_MALLOC_INTEGRITY
   int "allocator self integrity check"
   range 0 3
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
   default 1
   ---help---
      TODO

config STD_MALLOC_RANDOM
   int "random allocation"
   range 0 1
   depends on STD_MALLOC_STD || STD_MALLOC_BINS
   default 0
   ---help---
      TODO

endif

endmenu