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Matthew Dillon fa7dd9c5bc Change the way ELF coredumps are handled. Instead of unconditionally 
skipping read-only pages, which can result in valuable non-text-related
data not getting dumped, the ELF loader and the dynamic loader now mark
read-only text pages NOCORE and the coredump code only checks (primarily) for
complete inaccessibility of the page or NOCORE being set.

Certain applications which map large amounts of read-only data will
produce much larger cores.  A new sysctl has been added,
debug.elf_legacy_coredump, which will revert to the old behavior.

This commit represents collaborative work by all parties involved.
The PR contains a program demonstrating the problem.

PR:		kern/45994
Submitted by:	"Peter Edwards" <pmedwards@eircom.net>, Archie Cobbs <archie@dellroad.org>
Reviewed by:	jdp, dillon
MFC after:	7 days
2002-12-16 19:24:43 +00:00
..
bus_if.m
Add two interfaces to allow for busses to report the pnpinfo for
2002-10-07 05:06:38 +00:00
clock_if.m
Add a generic implementation of inittodr() and resettodr(), as well as
2002-04-04 23:39:10 +00:00
device_if.m
…
genassym.sh
Allow one to specify the AWK used in the environment(commandline).
2002-02-11 03:54:30 +00:00
imgact_aout.c
Use the fields in the sysentvec and in the vm map header in place of the
2002-09-21 22:07:17 +00:00
imgact_elf32.c
Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
2002-07-20 02:56:12 +00:00
imgact_elf64.c
Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
2002-07-20 02:56:12 +00:00
imgact_elf.c
Change the way ELF coredumps are handled. Instead of unconditionally
2002-12-16 19:24:43 +00:00
imgact_elfN.c
Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
2002-07-20 02:56:12 +00:00
imgact_gzip.c
Use the fields in the sysentvec and in the vm map header in place of the
2002-09-21 22:07:17 +00:00
imgact_shell.c
Remove reference to struct execve_args from struct imgact, which
2002-11-05 01:59:56 +00:00
inflate.c
Modernize my email address.
2002-03-25 13:52:45 +00:00
init_main.c
Fix typo in comment. It's SYSINIT, not SYSINT.
2002-11-30 22:15:30 +00:00
init_sysent.c
Regenerate system calls (swapoff added)
2002-12-15 19:19:15 +00:00
kern_acct.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
kern_acl.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
kern_alq.c
- Export the alq daemon thread pointer.
2002-09-26 07:38:56 +00:00
kern_clock.c
1. Support versioning and wall clock in kse mailbox,
2002-11-18 01:59:31 +00:00
kern_condvar.c
More work on the interaction between suspending and sleeping threads.
2002-10-25 07:11:12 +00:00
kern_conf.c
Don't allow dev_stdclone(9) to accept minors larger than the system is
2002-10-05 17:10:28 +00:00
kern_context.c
Add getcontext, setcontext, and swapcontext as system calls.
2002-11-16 06:35:53 +00:00
kern_descrip.c
Drop filedesc lock and acquire Giant around calls to malloc() and free().
2002-12-13 09:59:40 +00:00
kern_environment.c
remove syscallarg().
2002-12-14 02:07:32 +00:00
kern_event.c
Minor comment typo fix.
2002-10-29 20:51:44 +00:00
kern_exec.c
remove syscallarg().
2002-12-14 02:07:32 +00:00
kern_exit.c
Fix a refcount race with the vmspace structure. In order to prevent
2002-12-15 18:50:04 +00:00
kern_fork.c
Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
2002-12-10 02:33:45 +00:00
kern_idle.c
- Create a new scheduler api that is defined in sys/sched.h
2002-10-12 05:32:24 +00:00
kern_intr.c
Instead of (sizeof(source_buffer) - 1) bytes, copy at most
2002-10-17 21:02:02 +00:00
kern_jail.c
remove syscallarg().
2002-12-14 02:07:32 +00:00
kern_kse.c
Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
2002-12-10 02:33:45 +00:00
kern_kthread.c
Some kernel threads try to do significant work, and the default KSTACK_PAGES
2002-10-02 07:44:29 +00:00
kern_ktr.c
- Export the alq daemon thread pointer.
2002-09-26 07:38:56 +00:00
kern_ktrace.c
Some kernel threads try to do significant work, and the default KSTACK_PAGES
2002-10-02 07:44:29 +00:00
kern_linker.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
kern_lock.c
Remove a race condition / deadlock from snapshots. When
2002-11-30 19:00:51 +00:00
kern_lockf.c
- Fix a bunch of casts to long which were truncating off_t's.
2002-11-07 21:56:05 +00:00
kern_mac.c
SCARGS removal take II.
2002-12-14 01:56:26 +00:00
kern_malloc.c
Introduce malloc_last_fail() which returns the number of seconds since
2002-11-01 18:58:12 +00:00
kern_mib.c
Move the definitions of the hw.physmem, hw.usermem and hw.availpages
2002-11-07 23:57:17 +00:00
kern_module.c
SCARGS removal take II.
2002-12-14 01:56:26 +00:00
kern_mtxpool.c
Change callers of mtx_init() to pass in an appropriate lock type name. In
2002-04-04 21:03:38 +00:00
kern_mutex.c
Disable the kernacc() check in mtx_validate() until such time that kernacc
2002-10-25 08:40:20 +00:00
kern_ntptime.c
Remove an unused variable.
2002-10-11 10:36:22 +00:00
kern_physio.c
Change iov_base's type from char *' to the standard void *'. All
2002-10-11 14:58:34 +00:00
kern_poll.c
Increase size of ifnet.if_flags from 16 bits (short) to 32 bits (int). To avoid
2002-08-18 07:05:00 +00:00
kern_proc.c
- Add the new sched_pctcpu() function to the sched_* api.
2002-11-21 09:30:55 +00:00
kern_prot.c
Include file cleanup; mac.h and malloc.h at one point had ordering
2002-08-01 17:47:56 +00:00
kern_resource.c
- Create a new scheduler api that is defined in sys/sched.h
2002-10-12 05:32:24 +00:00
kern_sema.c
Change callers of mtx_init() to pass in an appropriate lock type name. In
2002-04-04 21:03:38 +00:00
kern_shutdown.c
During shutdown explain what the numbers following the 'syncing
2002-11-18 02:41:03 +00:00
kern_sig.c
Split 4.x and 5.x signal handling so that we can keep 4.x signal
2002-10-25 19:10:58 +00:00
kern_subr.c
Use pmap_remove_all() instead of pmap_remove() before freeing the page
2002-11-28 08:44:26 +00:00
kern_switch.c
Did you ever notice how stupid bugs show up much clearer
2002-10-14 20:43:02 +00:00
kern_sx.c
Set the lock type equal to the lock name for now as all of the current
2002-04-04 20:49:35 +00:00
kern_synch.c
Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
2002-12-10 02:33:45 +00:00
kern_syscalls.c
- Lock down the ``module'' structure by adding an SX lock that is used by
2002-03-18 07:45:30 +00:00
kern_sysctl.c
Implement mac_check_system_sysctl(), a MAC Framework entry point to
2002-10-27 07:12:34 +00:00
kern_tc.c
Introduce a "time_uptime" global variable which holds the time since boot
2002-11-01 18:52:20 +00:00
kern_thread.c
Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
2002-12-10 02:33:45 +00:00
kern_time.c
SCARGS removal take II.
2002-12-14 01:56:26 +00:00
kern_timeout.c
Fix a format buglet.
2002-09-05 11:42:03 +00:00
kern_uuid.c
Include <sys/systm.h> for the declarations of many things instead of
2002-08-22 12:47:22 +00:00
kern_xxx.c
more caddr_t removal.
2002-06-29 02:00:02 +00:00
ksched.c
headers should not really include "opt_foo.h" (in this case opt_posix.h).
2002-11-15 22:55:06 +00:00
link_elf_obj.c
Merge kld access control checks from the MAC tree: these access control
2002-11-19 22:12:42 +00:00
link_elf.c
Merge kld access control checks from the MAC tree: these access control
2002-11-19 22:12:42 +00:00
linker_if.m
…
Make.tags.inc
Don't hardcode /sys when making tags, instead use ${.CURDIR}/.. this
2002-02-27 10:07:15 +00:00
Makefile
…
makesyscalls.sh
The syscall names are string constants, so make them consts.
2002-10-29 15:47:06 +00:00
md4c.c
…
md5c.c
We have memset() and memcpy() in the kernel now, so we don't need to
2002-10-20 22:33:42 +00:00
p1003_1b.c
headers should not really include "opt_foo.h" (in this case opt_posix.h).
2002-11-15 22:55:06 +00:00
posix4_mib.c
Rework the sysconf(3) interaction with aio:
2002-11-17 04:15:34 +00:00
sched_4bsd.c
- Add the new sched_pctcpu() function to the sched_* api.
2002-11-21 09:30:55 +00:00
subr_acl_posix1e.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
subr_autoconf.c
Remove __P.
2002-03-19 21:25:46 +00:00
subr_blist.c
This is David Schultz's swapoff code which I am finally able to commit.
2002-12-15 19:17:57 +00:00
subr_bus.c
devd kernel improvements:
2002-11-30 00:49:43 +00:00
subr_clist.c
Remove __P.
2002-03-19 21:25:46 +00:00
subr_clock.c
Use the CPU_* OID constants instead of OID_AUTO for the clock-related
2002-08-07 19:43:54 +00:00
subr_devstat.c
Use strlcpy() instead of strncpy() to copy NUL terminated strings
2002-10-17 20:03:38 +00:00
subr_disk.c
This checkin reimplements the io-request priority hack in a way
2002-10-22 00:59:49 +00:00
subr_disklabel.c
(This commit touches about 15 disk device drivers in a very consistent
2002-09-20 19:36:05 +00:00
subr_diskmbr.c
Split MBR and PC98 on-disk sliceformats out from disklabel.h, step 1:
2002-10-01 07:24:55 +00:00
subr_diskslice.c
Use strlcpy() instead of strncpy() to copy NUL terminated strings
2002-10-17 20:03:38 +00:00
subr_eventhandler.c
Wrap a line longer than 80 characters.
2002-07-19 17:44:44 +00:00
subr_hints.c
Cosmetic tweaks. Try and keep the style more consistent, catch some stray
2002-05-01 02:51:50 +00:00
subr_kobj.c
Convert hit and miss counters to unsigned values. Surely negative values
2002-06-10 22:40:26 +00:00
subr_log.c
Make the msg_size, msg_bufx and msg_bufr memebers of struct msgbuf
2002-11-14 16:11:12 +00:00
subr_mbuf.c
o Initialise each mbuf's m_len to 0 in m_getm(); mb_put_mem() depends
2002-11-27 04:26:00 +00:00
subr_mchain.c
Remove the hto(be|le)[slq] and (be|le)toh[slq] macros defined in
2002-12-16 16:20:06 +00:00
subr_module.c
…
subr_param.c
Change hw.physmem and hw.usermem to unsigned long like they used to be
2002-08-30 04:04:37 +00:00
subr_pcpu.c
Add a per-cpu variable, cpumask, the preshifted equivalent of 1 << cpuid.
2002-01-05 09:35:50 +00:00
subr_power.c
Use ISO 9X variadic macro format; arguments are not optional, just
2002-07-15 17:17:56 +00:00
subr_prf.c
Make the msg_size, msg_bufx and msg_bufr memebers of struct msgbuf
2002-11-14 16:11:12 +00:00
subr_prof.c
Don't #error if we are lint.
2002-10-01 13:15:11 +00:00
subr_rman.c
Make the rman_{get,set}_* macros into real functions. The macros
2002-11-27 03:55:22 +00:00
subr_rtc.c
Use the CPU_* OID constants instead of OID_AUTO for the clock-related
2002-08-07 19:43:54 +00:00
subr_sbuf.c
Add the new function "sbuf_done()" which returns non-zero if the sbuf is
2002-10-04 09:58:17 +00:00
subr_scanf.c
Fix mis-indentation.
2002-10-02 09:09:25 +00:00
subr_smp.c
Completely redo thread states.
2002-09-11 08:13:56 +00:00
subr_taskqueue.c
If we fail to write to a vnode during a ktrace write, then we drop all
2002-08-01 13:35:38 +00:00
subr_trap.c
To reduce per-return overhead of userret(), call into
2002-11-08 19:00:17 +00:00
subr_turnstile.c
Disable the kernacc() check in mtx_validate() until such time that kernacc
2002-10-25 08:40:20 +00:00
subr_witness.c
Correct an assertion in the code to traverse the list of locks to find an
2002-11-11 16:36:20 +00:00
subr_xxx.c
Here follows the new kernel dumping infrastructure.
2002-03-31 22:37:00 +00:00
sys_generic.c
SCARGS removal take II.
2002-12-14 01:56:26 +00:00
sys_pipe.c
Remove a KASSERT I added in 1.73 to catch uninitialized pipes.
2002-10-14 21:15:04 +00:00
sys_process.c
Add a missing PROC_UNLOCK in ptrace() for the PT_IO case.
2002-10-16 16:28:33 +00:00
sys_socket.c
Update the st_size reported via stat(2) to accurately reflect the amount
2002-11-01 21:31:13 +00:00
syscalls.c
Regenerate system calls (swapoff added)
2002-12-15 19:19:15 +00:00
syscalls.master
This is David Schultz's swapoff code which I am finally able to commit.
2002-12-15 19:17:57 +00:00
sysv_ipc.c
Change the suser() API to take advantage of td_ucred as well as do a
2002-04-01 21:31:13 +00:00
sysv_msg.c
o Clear a high bit of ipc_perm.seq so msgget(3) never returns a
2002-12-15 09:41:46 +00:00
sysv_sem.c
Don't leak memory in semop(2). (Fix a bug I introduced in rev 1.55.)
2002-10-19 02:07:35 +00:00
sysv_shm.c
return foo -> return (foo)
2002-08-15 02:10:12 +00:00
tty_compat.c
Fixed some style bugs in the removal of __P(()). The main ones were
2002-03-24 05:09:11 +00:00
tty_conf.c
…
tty_cons.c
Use strlcpy() instead of strncpy() to copy NUL terminated strings
2002-10-17 20:03:38 +00:00
tty_pty.c
- Lock proctree_lock instead of pgrpsess_lock.
2002-04-16 17:09:22 +00:00
tty_subr.c
Remove __P.
2002-03-19 21:25:46 +00:00
tty_tty.c
Pass active_cred and file_cred into the MAC framework explicitly
2002-08-19 19:04:53 +00:00
tty.c
In an SMP environment post-Giant it is no longer safe to blindly
2002-10-03 02:13:00 +00:00
uipc_accf.c
…
uipc_cow.c
Change iov_base's type from char *' to the standard void *'. All
2002-10-11 14:58:34 +00:00
uipc_domain.c
Back out my lats commit of locking down a socket, it conflicts with hsu's work.
2002-05-31 11:52:35 +00:00
uipc_jumbo.c
o Lock page queue accesses by vm_page_free().
2002-07-21 19:06:46 +00:00
uipc_mbuf2.c
correct function names in KASSERT's for 2 m_tag routines
2002-11-26 17:59:16 +00:00
uipc_mbuf.c
Replace aux mbufs with packet tags:
2002-10-16 01:54:46 +00:00
uipc_proto.c
…
uipc_sem.c
Be consistent about funtions being static.
2002-10-16 10:42:13 +00:00
uipc_sockbuf.c
Spotted a couple of places where the socket buffer's counters were being
2002-11-05 18:52:25 +00:00
uipc_socket2.c
Spotted a couple of places where the socket buffer's counters were being
2002-11-05 18:52:25 +00:00
uipc_socket.c
Small SO_RCVTIMEO and SO_SNDTIMEO values are mistakenly taken to be zero.
2002-11-27 13:34:04 +00:00
uipc_syscalls.c
Integrate mac_check_socket_send() and mac_check_socket_receive()
2002-10-06 14:39:15 +00:00
uipc_usrreq.c
Trim extraneous #else and #endif MAC comments per style(9).
2002-10-28 21:17:53 +00:00
vfs_acl.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
vfs_aio.c
Rework the sysconf(3) interaction with aio:
2002-11-17 04:15:34 +00:00
vfs_bio.c
The buffer daemon cannot skip over buffers owned by locked inodes as
2002-12-14 01:35:30 +00:00
vfs_cache.c
Split up __getcwd so that kernel callers of the internal version
2002-09-02 22:40:30 +00:00
vfs_cluster.c
- Use %j to print intmax_t values.
2002-11-07 22:41:08 +00:00
vfs_default.c
Don't try to be cute and save a call/return by implementing a degenerate
2002-10-24 17:55:49 +00:00
vfs_export.c
Partial backout of 1.318, remove error handling added because it may be
2002-06-30 05:23:58 +00:00
vfs_extattr.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
vfs_init.c
We don't need to check the return value of malloc() against
2002-06-22 21:44:11 +00:00
vfs_lookup.c
Add a new 'NOMACCHECK' flag to namei() NDINIT flags, which permits the
2002-10-19 21:25:51 +00:00
vfs_mount.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
vfs_subr.c
Perform vm_object_lock() and vm_object_unlock() around
2002-12-15 05:41:56 +00:00
vfs_syscalls.c
unwrap lines made short enough by SCARGS removal
2002-12-14 08:18:06 +00:00
vfs_vnops.c
Within ufs, the ffs_sync and ffs_fsync functions did not always
2002-10-25 00:20:37 +00:00
vnode_if.src
- We don't need any automated lock checking for vop_islocked.
2002-09-26 00:31:16 +00:00