mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-05 17:59:19 +00:00
posix_spawn(3): add POSIX_SPAWN_DISABLE_ASLR_NP
similar to Apple _POSIX_SPAWN_DISABLE_ASLR Reviewed by: emaste, kevans Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D44195
This commit is contained in:
parent
80ac36c3a2
commit
822042fdfc
|
@ -59,6 +59,7 @@ typedef struct __posix_spawn_file_actions *posix_spawn_file_actions_t;
|
||||||
#define POSIX_SPAWN_SETSCHEDULER 0x08
|
#define POSIX_SPAWN_SETSCHEDULER 0x08
|
||||||
#define POSIX_SPAWN_SETSIGDEF 0x10
|
#define POSIX_SPAWN_SETSIGDEF 0x10
|
||||||
#define POSIX_SPAWN_SETSIGMASK 0x20
|
#define POSIX_SPAWN_SETSIGMASK 0x20
|
||||||
|
#define POSIX_SPAWN_DISABLE_ASLR_NP 0x40
|
||||||
|
|
||||||
__BEGIN_DECLS
|
__BEGIN_DECLS
|
||||||
/*
|
/*
|
||||||
|
|
|
@ -28,6 +28,7 @@
|
||||||
|
|
||||||
#include "namespace.h"
|
#include "namespace.h"
|
||||||
#include <sys/param.h>
|
#include <sys/param.h>
|
||||||
|
#include <sys/procctl.h>
|
||||||
#include <sys/queue.h>
|
#include <sys/queue.h>
|
||||||
#include <sys/wait.h>
|
#include <sys/wait.h>
|
||||||
|
|
||||||
|
@ -91,7 +92,7 @@ static int
|
||||||
process_spawnattr(const posix_spawnattr_t sa)
|
process_spawnattr(const posix_spawnattr_t sa)
|
||||||
{
|
{
|
||||||
struct sigaction sigact = { .sa_flags = 0, .sa_handler = SIG_DFL };
|
struct sigaction sigact = { .sa_flags = 0, .sa_handler = SIG_DFL };
|
||||||
int i;
|
int aslr, i;
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* POSIX doesn't really describe in which order everything
|
* POSIX doesn't really describe in which order everything
|
||||||
|
@ -139,6 +140,13 @@ process_spawnattr(const posix_spawnattr_t sa)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Disable ASLR. */
|
||||||
|
if ((sa->sa_flags & POSIX_SPAWN_DISABLE_ASLR_NP) != 0) {
|
||||||
|
aslr = PROC_ASLR_FORCE_DISABLE;
|
||||||
|
if (procctl(P_PID, 0, PROC_ASLR_CTL, &aslr) != 0)
|
||||||
|
return (errno);
|
||||||
|
}
|
||||||
|
|
||||||
return (0);
|
return (0);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -631,7 +639,8 @@ posix_spawnattr_setflags(posix_spawnattr_t *sa, short flags)
|
||||||
{
|
{
|
||||||
if ((flags & ~(POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP |
|
if ((flags & ~(POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP |
|
||||||
POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER |
|
POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER |
|
||||||
POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK)) != 0)
|
POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK |
|
||||||
|
POSIX_SPAWN_DISABLE_ASLR_NP)) != 0)
|
||||||
return (EINVAL);
|
return (EINVAL);
|
||||||
(*sa)->sa_flags = flags;
|
(*sa)->sa_flags = flags;
|
||||||
return (0);
|
return (0);
|
||||||
|
|
Loading…
Reference in New Issue
Block a user