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Make process descriptors standard part of the kernel. rwhod(8) already

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requires process descriptors to work and having PROCDESC in GENERIC
seems not enough, especially that we hope to have more and more consumers
in the base.

MFC after:	3 days
This commit is contained in:
Pawel Jakub Dawidek 2013-11-30 15:08:35 +00:00
parent c302aeb123
commit f2b525e6b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=258768
17 changed files with 1 additions and 69 deletions
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6
lib/libc/sys/pdfork.2
View File

@ -125,12 +125,6 @@ is set; if the process is still alive and this is
the last reference to the process descriptor, the process will be terminated
with the signal
.Dv SIGKILL .
.Pp
.Nm
and associated functions depend on
.Cd "options PROCDESC"
described in
.Xr procdesc 4 .
.Sh RETURN VALUES
.Fn pdfork
returns a PID, 0 or -1, as

1
share/man/man4/capsicum.4
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@ -35,7 +35,6 @@
.Sh SYNOPSIS
.Cd "options CAPABILITY_MODE"
.Cd "options CAPABILITIES"
.Cd "options PROCDESC"
.Sh DESCRIPTION
.Nm
is a lightweight OS capability and sandbox framework implementing a hybrid

2
share/man/man4/procdesc.4
View File

@ -35,8 +35,6 @@
.Sh NAME
.Nm procdesc
.Nd process descriptor facility
.Sh SYNOPSIS
.Cd "options PROCDESC"
.Sh DESCRIPTION
.Nm
is a file-descriptor-oriented interface to process signalling and control,

1
sys/amd64/conf/GENERIC
View File

@ -66,7 +66,6 @@ options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options KDTRACE_FRAME # Ensure frames are compiled in
options KDTRACE_HOOKS # Kernel DTrace hooks

3
sys/conf/NOTES
View File

@ -1167,9 +1167,6 @@ options MAC_TEST
options CAPABILITIES # fine-grained rights on file descriptors
options CAPABILITY_MODE # sandboxes with no global namespace access
# Support for process descriptors
options PROCDESC
#####################################################################
# CLOCK OPTIONS

1
sys/conf/options
View File

@ -165,7 +165,6 @@ PPC_DEBUG opt_ppc.h
PPC_PROBE_CHIPSET opt_ppc.h
PPS_SYNC opt_ntp.h
PREEMPTION opt_sched.h
PROCDESC opt_procdesc.h
QUOTA
SCHED_4BSD opt_sched.h
SCHED_STATS opt_sched.h

1
sys/i386/conf/GENERIC
View File

@ -67,7 +67,6 @@ options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # Kernel ELF linker loads CTF data

1
sys/ia64/conf/GENERIC
View File

@ -46,7 +46,6 @@ options NFS_ROOT # NFS usable as root device
options P1003_1B_SEMAPHORES # POSIX-style semaphores
options PREEMPTION # Enable kernel thread preemption
options PRINTF_BUFR_SIZE=128 # Printf buffering to limit interspersion
options PROCDESC # Support for process descriptors
options PROCFS # Process filesystem (/proc)
options PSEUDOFS # Pseudo-filesystem framework
options SCHED_ULE # ULE scheduler

5
sys/kern/kern_descrip.c
View File

@ -41,7 +41,6 @@ __FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include "opt_ddb.h"
#include "opt_ktrace.h"
#include "opt_procdesc.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -3115,11 +3114,9 @@ sysctl_kern_proc_ofiledesc(SYSCTL_HANDLER_ARGS)
tp = fp->f_data;
break;
#ifdef PROCDESC
case DTYPE_PROCDESC:
kif->kf_type = KF_TYPE_PROCDESC;
break;
#endif
default:
kif->kf_type = KF_TYPE_UNKNOWN;
@ -3485,12 +3482,10 @@ kern_proc_filedesc_out(struct proc *p, struct sbuf *sb, ssize_t maxlen)
data = fp->f_data;
break;
#ifdef PROCDESC
case DTYPE_PROCDESC:
type = KF_TYPE_PROCDESC;
data = fp->f_data;
break;
#endif
default:
type = KF_TYPE_UNKNOWN;

7
sys/kern/kern_exit.c
View File

@ -39,7 +39,6 @@ __FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include "opt_ktrace.h"
#include "opt_procdesc.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -500,9 +499,7 @@ exit1(struct thread *td, int rv)
* procdesc_exit() to serialize concurrent calls to close() and
* exit().
*/
#ifdef PROCDESC
if (p->p_procdesc == NULL || procdesc_exit(p)) {
#endif
/*
* Notify parent that we're gone. If parent has the
* PS_NOCLDWAIT flag set, or if the handler is set to SIG_IGN,
@ -539,10 +536,8 @@ exit1(struct thread *td, int rv)
else /* LINUX thread */
kern_psignal(p->p_pptr, p->p_sigparent);
}
#ifdef PROCDESC
} else
PROC_LOCK(p->p_pptr);
#endif
sx_xunlock(&proctree_lock);
/*
@ -807,10 +802,8 @@ proc_reap(struct thread *td, struct proc *p, int *status, int options)
clear_orphan(p);
PROC_UNLOCK(p);
leavepgrp(p);
#ifdef PROCDESC
if (p->p_procdesc != NULL)
procdesc_reap(p);
#endif
sx_xunlock(&proctree_lock);
/*

17
sys/kern/kern_fork.c
View File

@ -39,7 +39,6 @@ __FBSDID("$FreeBSD$");
#include "opt_ktrace.h"
#include "opt_kstack_pages.h"
#include "opt_procdesc.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -118,7 +117,6 @@ sys_pdfork(td, uap)
struct thread *td;
struct pdfork_args *uap;
{
#ifdef PROCDESC
int error, fd;
struct proc *p2;
@ -135,9 +133,6 @@ sys_pdfork(td, uap)
error = copyout(&fd, uap->fdp, sizeof(fd));
}
return (error);
#else
return (ENOSYS);
#endif
}
/* ARGSUSED */
@ -655,7 +650,6 @@ do_fork(struct thread *td, int flags, struct proc *p2, struct thread *td2,
p2->p_vmspace->vm_ssize);
}
#ifdef PROCDESC
/*
* Associate the process descriptor with the process before anything
* can happen that might cause that process to need the descriptor.
@ -663,7 +657,6 @@ do_fork(struct thread *td, int flags, struct proc *p2, struct thread *td2,
*/
if (flags & RFPROCDESC)
procdesc_new(p2, pdflags);
#endif
/*
* Both processes are set up, now check if any loadable modules want
@ -758,9 +751,7 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
int error;
static int curfail;
static struct timeval lastfail;
#ifdef PROCDESC
struct file *fp_procdesc = NULL;
#endif
/* Check for the undefined or unimplemented flags. */
if ((flags & ~(RFFLAGS | RFTSIGFLAGS(RFTSIGMASK))) != 0)
@ -778,7 +769,6 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
if ((flags & RFTSIGZMB) != 0 && (u_int)RFTSIGNUM(flags) > _SIG_MAXSIG)
return (EINVAL);
#ifdef PROCDESC
if ((flags & RFPROCDESC) != 0) {
/* Can't not create a process yet get a process descriptor. */
if ((flags & RFPROC) == 0)
@ -788,7 +778,6 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
if (procdescp == NULL)
return (EINVAL);
}
#endif
p1 = td->td_proc;
@ -801,7 +790,6 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
return (fork_norfproc(td, flags));
}
#ifdef PROCDESC
/*
* If required, create a process descriptor in the parent first; we
* will abandon it if something goes wrong. We don't finit() until
@ -812,7 +800,6 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
if (error != 0)
return (error);
}
#endif
mem_charged = 0;
vm2 = NULL;
@ -919,12 +906,10 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
* Return child proc pointer to parent.
*/
*procp = newproc;
#ifdef PROCDESC
if (flags & RFPROCDESC) {
procdesc_finit(newproc->p_procdesc, fp_procdesc);
fdrop(fp_procdesc, td);
}
#endif
racct_proc_fork_done(newproc);
return (0);
}
@ -944,12 +929,10 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp,
if (vm2 != NULL)
vmspace_free(vm2);
uma_zfree(proc_zone, newproc);
#ifdef PROCDESC
if ((flags & RFPROCDESC) != 0 && fp_procdesc != NULL) {
fdclose(td->td_proc->p_fd, fp_procdesc, *procdescp, td);
fdrop(fp_procdesc, td);
}
#endif
pause("fork", hz / 2);
return (error);
}

5
sys/kern/kern_sig.c
View File

@ -40,7 +40,6 @@ __FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include "opt_ktrace.h"
#include "opt_core.h"
#include "opt_procdesc.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -1723,7 +1722,6 @@ sys_pdkill(td, uap)
struct thread *td;
struct pdkill_args *uap;
{
#ifdef PROCDESC
struct proc *p;
cap_rights_t rights;
int error;
@ -1743,9 +1741,6 @@ sys_pdkill(td, uap)
kern_psignal(p, uap->signum);
PROC_UNLOCK(p);
return (error);
#else
return (ENOSYS);
#endif
}
#if defined(COMPAT_43)

15
sys/kern/sys_procdesc.c
View File

@ -61,8 +61,6 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_procdesc.h"
#include <sys/param.h>
#include <sys/capability.h>
#include <sys/fcntl.h>
@ -85,8 +83,6 @@ __FBSDID("$FreeBSD$");
#include <vm/uma.h>
#ifdef PROCDESC
FEATURE(process_descriptors, "Process Descriptors");
static uma_zone_t procdesc_zone;
@ -522,14 +518,3 @@ procdesc_chown(struct file *fp, uid_t uid, gid_t gid, struct ucred *active_cred,
return (EOPNOTSUPP);
}
#else /* !PROCDESC */
int
sys_pdgetpid(struct thread *td, struct pdgetpid_args *uap)
{
return (ENOSYS);
}
#endif /* PROCDESC */

1
sys/pc98/conf/GENERIC
View File

@ -65,7 +65,6 @@ options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options INCLUDE_CONFIG_FILE # Include this file in kernel
options KDB # Kernel debugger related code

1
sys/powerpc/conf/GENERIC
View File

@ -70,7 +70,6 @@ options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # Kernel ELF linker loads CTF data

1
sys/sparc64/conf/GENERIC
View File

@ -63,7 +63,6 @@ options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options INCLUDE_CONFIG_FILE # Include this file in kernel

2
usr.sbin/rwhod/rwhod.c
View File

@ -281,7 +281,7 @@ main(int argc, char *argv[])
} else if (pid_child_receiver == -1) {
if (errno == ENOSYS) {
syslog(LOG_ERR,
"The pdfork(2) system call is not available; recompile the kernel with options PROCDESC");
"The pdfork(2) system call is not available - kernel too old.");
} else {
syslog(LOG_ERR, "pdfork: %m");
}