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Provide storage for the process feature control flags in struct proc.

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The flags are cleared on exec, it is up to the image activator to set
them.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2018-11-23 23:07:57 +00:00
parent fee65dfc37
commit f5cf758998
3 changed files with 6 additions and 4 deletions
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1
sys/kern/kern_exec.c
View File

@ -488,6 +488,7 @@ do_execve(struct thread *td, struct image_args *args, struct mac *mac_p)
goto exec_fail_dealloc;
imgp->proc->p_osrel = 0;
imgp->proc->p_fctl0 = 0;
/*
* Implement image setuid/setgid.

8
sys/kern/kern_thread.c
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@ -92,9 +92,9 @@ _Static_assert(offsetof(struct proc, p_pid) == 0xbc,
"struct proc KBI p_pid");
_Static_assert(offsetof(struct proc, p_filemon) == 0x3d0,
"struct proc KBI p_filemon");
_Static_assert(offsetof(struct proc, p_comm) == 0x3e4,
_Static_assert(offsetof(struct proc, p_comm) == 0x3e8,
"struct proc KBI p_comm");
_Static_assert(offsetof(struct proc, p_emuldata) == 0x4b8,
_Static_assert(offsetof(struct proc, p_emuldata) == 0x4c0,
"struct proc KBI p_emuldata");
#endif
#ifdef __i386__
@ -112,9 +112,9 @@ _Static_assert(offsetof(struct proc, p_pid) == 0x74,
"struct proc KBI p_pid");
_Static_assert(offsetof(struct proc, p_filemon) == 0x27c,
"struct proc KBI p_filemon");
_Static_assert(offsetof(struct proc, p_comm) == 0x28c,
_Static_assert(offsetof(struct proc, p_comm) == 0x290,
"struct proc KBI p_comm");
_Static_assert(offsetof(struct proc, p_emuldata) == 0x318,
_Static_assert(offsetof(struct proc, p_emuldata) == 0x31c,
"struct proc KBI p_emuldata");
#endif

1
sys/sys/proc.h
View File

@ -642,6 +642,7 @@ struct proc {
u_int p_magic; /* (b) Magic number. */
int p_osrel; /* (x) osreldate for the
binary (from ELF note, if any) */
uint32_t p_fctl0; /* (x) ABI feature control, ELF note */
char p_comm[MAXCOMLEN + 1]; /* (x) Process name. */
struct sysentvec *p_sysent; /* (b) Syscall dispatch info. */
struct pargs *p_args; /* (c) Process arguments. */