Commit Graph

377 Commits

Author SHA1 Message Date
dsl
d208828f20 These files don't need compat/osf1/osf1_cvt.h 2013-01-02 18:48:22 +00:00
njoly
1ebbf7b605 Move rusage computation to a new getrusage1() function. Adjust all
compat/emulations to make use of it.
2012-11-03 23:22:21 +00:00
rmind
ad12c77015 Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.
2012-02-19 21:05:51 +00:00
matt
2210079e9b Add a hook for freeing an ep_emul_arg. Add a wrapper routine
(exec_free_emul_arg) to call the hook and then clear the ep_emul_arg
and ep_emul_arg_free members in the exec_package.
Change users/accessors to use these routines.
Approved by releng.
2012-02-03 20:11:53 +00:00
njoly
598b81ec2e Fix SYSCALL_DEBUG build. 2011-07-22 10:02:08 +00:00
joerg
557eb4273a Forward define of ps_strings. 2011-03-05 19:08:40 +00:00
chs
33fa5ccbbf many changes for COMPAT_LINUX:
- update the linux syscall table for each platform.
 - support new-style (NPTL) linux pthreads on all platforms.
   clone() with CLONE_THREAD uses 1 process with many LWPs
   instead of separate processes.
 - move the contents of sys__lwp_setprivate() into a new
   lwp_setprivate() and use that everywhere.
 - update linux_release[] and linux32_release[] to "2.6.18".
 - adjust placement of emul fork/exec/exit hooks as needed
   and adjust other emul code to match.
 - convert all struct emul definitions to use named initializers.
 - change the pid allocator to allow multiple pids to refer to the same proc.
 - remove a few fields from struct proc that are no longer needed.
 - disable the non-functional "vdso" code in linux32/amd64,
   glibc works fine without it.
 - fix a race in the futex code where we could miss a wakeup after
   a requeue operation.
 - redo futex locking to be a little more efficient.
2010-07-07 01:30:32 +00:00
hannken
1423e65b26 Clean up vnode lock operations pass 2:
VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.
2010-06-24 12:58:48 +00:00
dholland
54f6c52ba9 Remove the nameidata from struct exec_package. It was used only for two
things: passing an argument to check_exec, which is better done explicitly,
and handing back the resolved pathname generated by namei, which we can
make an explicit slot for in struct exec_package instead. While here,
perform some related tidyup, and store the kernel-side copy of the path
to the executable as well as the pointer into userspace. (But the latter
should probably be removed in the future.)
2010-05-02 05:30:20 +00:00
rmind
d00df28408 Replace M_IOV and some malloc(9)s with kmem(9), and while there:
- Fix invalid free (M_TEMP vs M_IOV) in do_sys_recvmsg(), spotted by jakllsch@.
  Also, same fix in osf1_sys_sendmsg_xopen().
- Fix attempt to free non-allocated memory in error path in netbsd32___getfh30().
- Plug a memory leak in compat_43_netbsd32_orecvmsg().
2010-04-23 15:19:19 +00:00
he
7a30544200 When implementing "read directory", when there are too many empty entries
in a row, and we need to try to read the next block, and have passed a
non-NULL cookie pointer to VOP_READDIR, ensure that we free the cookie
buffer before re-doing VOP_READDIR, so that we don't leak memory.
This fix is similar to nfs_serv.c revisions 1.115 + 1.124.

This should fix the long-standing problem observed by e.g. using Linux-
emulated programs to take backup of servers, which is one of the problems
which were reported in PR#42661.

Thanks to pooka@ for the hints for traversing the VOP* layer.
2010-03-03 08:20:38 +00:00
pooka
808ba2d476 remove nfssvc emulation (or non-emulation) 2010-03-02 21:09:21 +00:00
matt
15aa4c53c9 Regen (new makesyscalls.sh) 2009-12-14 00:53:32 +00:00
rmind
eaddd78061 Use lwp_getpcb() in compat code, clean from struct user. 2009-11-23 00:46:06 +00:00
rmind
1283950019 - selcommon/pollcommon: drop redundant l argument.
- Use cached curlwp->l_fd, instead of p->p_fd.
- Inline selscan/pollscan.
2009-11-11 09:48:50 +00:00
rmind
4c1098f541 do_sys_wait(): fix previous by checking for ru != NULL. Noticed by
Onno van der Linden.  Also, remove redundant arguments (seems that
was_zombie was not used since rev 1.177 ?).
2009-11-04 21:23:02 +00:00
haad
5200b9b492 Add enum uio_seg argument to do_sys_mknod and do_sys_mkdir so these functions
can be called from kernel, too.

Change needed for zfs device node creation, until we have propoer devfs.

Oked by ad@.
2009-08-09 22:49:00 +00:00
dholland
effcf1af5c Convert 67 namei call sites to use namei_simple, in these functions:
check_console, veriexecclose, veriexec_delete, veriexec_file_add,
emul_find_root, coff_load_shlib (sh3 version), coff_load_shlib,
compat_20_sys_statfs, compat_20_netbsd32_statfs,
ELFNAME2(netbsd32,probe_noteless), darwin_sys_statfs,
ibcs2_sys_statfs, ibcs2_sys_statvfs, linux_sys_uselib,
osf1_sys_statfs, sunos_sys_statfs, sunos32_sys_statfs,
ultrix_sys_statfs, do_sys_mount, fss_create_files (3 of 4),
adosfs_mount, cd9660_mount, coda_ioctl, coda_mount, ext2fs_mount,
ffs_mount, filecore_mount, hfs_mount, lfs_mount, msdosfs_mount,
ntfs_mount, sysvbfs_mount, udf_mount, union_mount, sys_chflags,
sys_lchflags, sys_chmod, sys_lchmod, sys_chown, sys_lchown,
sys___posix_chown, sys___posix_lchown, sys_link, do_sys_pstatvfs,
sys_quotactl, sys_revoke, sys_truncate, do_sys_utimes, sys_extattrctl,
sys_extattr_set_file, sys_extattr_set_link, sys_extattr_get_file,
sys_extattr_get_link, sys_extattr_delete_file,
sys_extattr_delete_link, sys_extattr_list_file, sys_extattr_list_link,
sys_setxattr, sys_lsetxattr, sys_getxattr, sys_lgetxattr,
sys_listxattr, sys_llistxattr, sys_removexattr, sys_lremovexattr

All have been scrutinized (several times, in fact) and compile-tested,
but not all have been explicitly tested in action.

XXX: While I haven't (intentionally) changed the use or nonuse of
XXX: TRYEMULROOT in any of these places, I'm not convinced all the
XXX: uses are correct; an audit might be desirable.
2009-06-29 05:08:15 +00:00
njoly
05d61dcbbd Make getdirentries set a correct block read position for basep
argument.
2009-05-29 09:32:41 +00:00
njoly
c2d83ad5c5 Redo previous, by simply updating basep earlier, before label. 2009-05-28 15:21:26 +00:00
njoly
2a614502ab Make getdirentries(2) correctly fail with EINVAL for an invalid file
descriptor (not for a directory), by not updating basep syscall
argument on error.
2009-05-28 14:48:20 +00:00
njoly
eb51be4e79 Adjust compat osf1 to recent pad -> PAD change. 2009-05-18 12:39:02 +00:00
dogcow
36ffab86d9 fix what looks like a mechanical stuffup in the timeval -> timespec conversion. 2009-04-01 03:06:06 +00:00
christos
2b1b4bc6ef Move the internal poll/select related API's to use timespec instead
of timeval (rides the uvm bump).
2009-03-29 19:21:19 +00:00
mrg
fcc023545e - add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total
address space available to processes.  this limit exists in most other
modern unix variants, and like most of them, our defaults are unlimited.
remove the old mmap / rlimit.datasize hack.

- adds the VMCMD_STACK flag to all the stack-creation vmcmd callers.
it is currently unused, but was added a few years ago.

- add a pair of new process size values to kinfo_proc2{}. one is the
total size of the process memory map, and the other is the total size
adjusted for unused stack space (since most processes have a lot of
this...)

- patch sh, and csh to notice RLIMIT_AS.  (in some cases, the alias
RLIMIT_VMEM was already present and used if availble.)

- patch ps, top and systat to notice the new k_vm_vsize member of
kinfo_proc2{}.

- update irix, svr4, svr4_32, linux and osf1 emulations to support
this information.  (freebsd could be done, but that it's best left
as part of the full-update of compat/freebsd.)


this addresses PR 7897.  it also gives correct memory usage values,
which have never been entirely correct (since mmap), and have been
very incorrect since jemalloc() was enabled.

tested on i386 and sparc64, build tested on several other platforms.

thanks to many folks for feedback and testing but most espcially
chuq and yamt for critical suggestions that lead to this patch not
having a special ugliness i wasn't happy with anyway :-)
2009-03-29 01:02:48 +00:00
dsl
82357f6d42 ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
2009-03-14 21:04:01 +00:00
njoly
3e5b27ff8e Make all fstat(2) compat syscalls consistently use do_sys_fstat(),
instead of fd_getfile()/fd_putfile() dance.

ok by christos.
2009-01-26 13:00:04 +00:00
pooka
09ba2d6689 Regen to prove I didn't screw up the conversion: purely RCSID changes. 2009-01-13 22:33:11 +00:00
pooka
a9a2ce837b Convert the syscalls.master to a format from which it is easier
to parse and generate the compat name and basename (e.g. __stat50
and stat).  Use this to autogenerate __RENAME()'s to the rump_syscalls
header so that they can be called e.g. rump_sys_socket() instead
of rump_sys___socket30().
2009-01-13 22:27:43 +00:00
rtr
f0916c9e83 use do_sys_mknod() instead of sys_mknod() to make this compile again.
ok'd by martin@
2009-01-13 11:35:24 +00:00
njoly
96d7b57e0f Regen for getdirentries fix. 2008-12-02 13:45:40 +00:00
njoly
488fb8373c Fix getdirentries(2) by not calling compat_43_sys_getdirentries, but
letting do its own job instead (native and osf1 dirent structure have
different member number and types).
2008-12-02 13:45:02 +00:00
njoly
6d6fb02ffd Regen for getpgid. 2008-11-24 00:26:34 +00:00
njoly
010c8bc9c7 Add getpgid, needed for Tru64 4.0g ksh. 2008-11-24 00:25:30 +00:00
cegger
3076d30653 make this compile for alpha 2008-11-19 22:02:21 +00:00
ad
92ce8c6a3d Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime
2008-11-19 18:35:57 +00:00
njoly
ef05808702 Do not call namei anymore, but use the result from the previous
emul_find_interp call instead. This make dynamic executables work
again under compat OSF1 (fix PR/39255).

ok by christos.
2008-11-15 00:49:53 +00:00
ad
a00bd89dab Replace references to getsock/getvnode. 2008-06-24 11:18:14 +00:00
ad
42d0626726 PR kern/38141 lookup/vfs_busy acquire rwlock recursively
Simplify the mount locking. Remove all the crud to deal with recursion on
the mount lock, and crud to deal with unmount as another weirdo lock.

Hopefully this will once and for all fix the deadlocks with this. With this
commit there are two locks on each mount:

- krwlock_t mnt_unmounting. This is used to prevent unmount across critical
  sections like getnewvnode(). It's only ever read locked with rw_tryenter(),
  and is only ever write locked in dounmount(). A write hold can't be taken
  on this lock if the current LWP could hold a vnode lock.

- kmutex_t mnt_updating. This is taken by threads updating the mount, for
  example when going r/o -> r/w, and is only present to serialize updates.
  In order to take this lock, a read hold must first be taken on
  mnt_unmounting, and the two need to be held across the operation.

One effect of this change: previously if an unmount failed, we would make a
half hearted attempt to back out of it gracefully, but that was unlikely to
work in a lot of cases. Now while an unmount that will be aborted is in
progress, new file operations within the mount will fail instead of being
delayed. That is unlikely to be a problem though, because if the admin
requests unmount of a file system then s(he) has made a decision to deny
access to the resource.
2008-05-06 18:43:44 +00:00
ad
928a6b2096 PR kern/38135 vfs_busy/vfs_trybusy confusion
The previous fix worked, but it opened a window where mounts could have
disappeared from mountlist while the caller was traversing it using
vfs_trybusy(). Fix that.
2008-04-30 12:49:16 +00:00
jmmv
b8f1187ff1 Fix build of these files after the vfs_trybusy change. Apply the same
modification done in compat/common/vfs_syscalls_20.c:1.27.
2008-04-30 06:49:23 +00:00
ad
284c2b9aef Merge proc::p_mutex and proc::p_smutex into a single adaptive mutex, since
we no longer need to guard against access from hardware interrupt handlers.

Additionally, if cloning a process with CLONE_SIGHAND, arrange to have the
child process share the parent's lock so that signal state may be kept in
sync. Partially addresses PR kern/37437.
2008-04-24 18:39:20 +00:00
ad
624dcd9102 Sprinkle locking. 2008-04-22 21:33:13 +00:00
ad
dce30353aa Add a comment. 2008-04-22 21:29:21 +00:00
ad
be04ac4896 Make rusage collection per-LWP and collate in the appropriate places.
cloned threads need a little bit more work but the locking needs to
be fixed first.
2008-03-27 19:06:51 +00:00
ad
a9ca7a3734 Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.
2008-03-21 21:54:58 +00:00
dsl
6fb2884c3a regen 2007-12-20 23:07:25 +00:00
dsl
7e2790cf6f Convert all the system call entry points from:
int foo(struct lwp *l, void *v, register_t *retval)
to:
    int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.
2007-12-20 23:02:38 +00:00
dogcow
9ad45b39e6 more NDINIT fallout. not completely compile-tested. 2007-12-09 13:34:23 +00:00
pooka
db06a930e6 Remove cn_lwp from struct componentname. curlwp should be used
from on.  The NDINIT() macro no longer takes the lwp parameter and
associates the credentials of the calling thread with the namei
structure.
2007-12-08 19:29:36 +00:00