git: 7178cd5f8108 - stable/14 - posix_spawn(3): document POSIX_SPAWN_DISABLE_ASLR_NP
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Date: Mon, 11 Mar 2024 00:29:27 UTC
The branch stable/14 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=7178cd5f810809d0329327131f8181d2c954918f commit 7178cd5f810809d0329327131f8181d2c954918f Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2024-03-03 22:19:22 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2024-03-11 00:25:58 +0000 posix_spawn(3): document POSIX_SPAWN_DISABLE_ASLR_NP (cherry picked from commit a725a7a24de585e996f21e190b5af41261ebc774) --- lib/libc/gen/posix_spawn.3 | 12 +++++++++++- lib/libc/gen/posix_spawnattr_getflags.3 | 3 ++- 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/lib/libc/gen/posix_spawn.3 b/lib/libc/gen/posix_spawn.3 index a9ff7b2b21da..55559ae7222b 100644 --- a/lib/libc/gen/posix_spawn.3 +++ b/lib/libc/gen/posix_spawn.3 @@ -32,7 +32,7 @@ .\" the referee document. The original Standard can be obtained online at .\" http://www.opengroup.org/unix/online.html. .\" -.Dd November 28, 2021 +.Dd March 4, 2024 .Dt POSIX_SPAWN 3 .Os .Sh NAME @@ -297,6 +297,15 @@ and the signals being indicated in the spawn-sigdefault attribute of the object referenced by .Fa attrp . .Pp +The Address Space Layout Randomization for the newly spawned process +can be disabled by specifying the +.Dv POSIX_SPAWN_DISABLE_ASLR_NP +flag in the spawn-flags attribute. +This setting is inherited by future children of the child as well. +See +.Xr procctl 2 +for more details. +.Pp If the value of the .Fa attrp pointer is NULL, then the default values are used. @@ -432,6 +441,7 @@ action. .Xr execve 2 , .Xr fcntl 2 , .Xr open 2 , +.Xr procctl 2 , .Xr sched_setparam 2 , .Xr sched_setscheduler 2 , .Xr setpgid 2 , diff --git a/lib/libc/gen/posix_spawnattr_getflags.3 b/lib/libc/gen/posix_spawnattr_getflags.3 index 18cf6683e935..308bbb386d76 100644 --- a/lib/libc/gen/posix_spawnattr_getflags.3 +++ b/lib/libc/gen/posix_spawnattr_getflags.3 @@ -32,7 +32,7 @@ .\" the referee document. The original Standard can be obtained online at .\" http://www.opengroup.org/unix/online.html. .\" -.Dd March 24, 2008 +.Dd March 4, 2024 .Dt POSIX_SPAWNATTR_GETFLAGS 3 .Os .Sh NAME @@ -75,6 +75,7 @@ It is the bitwise-inclusive OR of zero or more of the following flags .It Dv POSIX_SPAWN_SETSIGMASK .It Dv POSIX_SPAWN_SETSCHEDPARAM .It Dv POSIX_SPAWN_SETSCHEDULER +.It Dv POSIX_SPAWN_DISABLE_ASLR_NP .El .Pp These flags are defined in