Unverified Commit 6946e513 authored by Jeff Bailey's avatar Jeff Bailey Committed by GitHub
Browse files

[libc] Implement sys/personality.h (#195065) 

Added the personality() syscall wrapper, which sets or queries the
process execution domain. The function signature follows the Linux man
page: int personality(unsigned long persona).

New files:
* libc/include/sys/personality.{yaml,h.def}
* libc/src/sys/personality/ (implementation + linux/ syscall)
* libc/test/src/sys/personality/ (unit tests)

Registered the entrypoint and header for x86_64, aarch64, riscv, and
arm. The implementation includes <linux/personality.h> for the
kernel-defined constants (PER_LINUX, ADDR_NO_RANDOMIZE, etc.) following
the same pattern as sys/prctl.h.
parent 45132b50

libc/config/linux/aarch64/entrypoints.txt

+3 −0
Original line number Diff line number Diff line
@@ -308,6 +308,9 @@ set(TARGET_LIBC_ENTRYPOINTS 
    # sys/prctl.h entrypoints

    libc.src.sys.prctl.prctl



    # sys/personality.h entrypoints

    libc.src.sys.personality.personality



    # sys/auxv.h entrypoints

    libc.src.sys.auxv.getauxval

libc/config/linux/aarch64/headers.txt

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ set(TARGET_PUBLIC_HEADERS 
    libc.include.sys_epoll

    libc.include.sys_ioctl

    libc.include.sys_mman

    libc.include.sys_personality

    libc.include.sys_prctl

    libc.include.sys_queue

    libc.include.sys_random

libc/config/linux/arm/entrypoints.txt

+3 −0
Original line number Diff line number Diff line
@@ -183,6 +183,9 @@ set(TARGET_LIBC_ENTRYPOINTS 
    # sys/prctl.h entrypoints

    libc.src.sys.prctl.prctl



    # sys/personality.h entrypoints

    libc.src.sys.personality.personality



    # sys/epoll.h entrypoints

    # Disabled due to epoll_wait syscalls not being available on this platform.

    # libc.src.sys.epoll.epoll_wait

libc/config/linux/arm/headers.txt

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ set(TARGET_PUBLIC_HEADERS 
    libc.include.wchar

    libc.include.wctype



    libc.include.sys_personality



    # Disabled due to epoll_wait syscalls not being available on this platform.

    # libc.include.sys_epoll

)

libc/config/linux/riscv/entrypoints.txt

+3 −0
Original line number Diff line number Diff line
@@ -311,6 +311,9 @@ set(TARGET_LIBC_ENTRYPOINTS 
    # sys/prctl.h entrypoints

    libc.src.sys.prctl.prctl



    # sys/personality.h entrypoints

    libc.src.sys.personality.personality



    # sys/auxv.h entrypoints

    libc.src.sys.auxv.getauxval