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History log of /src/sys/compat/sys/shm.h
RevisionDateAuthorComments
 1.8  21-Feb-2019  mrg for sysv ipc stat operations, explicitly copy the exported parts
instead of the whole ds structure.

besides triggering a recently added assert in netbsd32, this stops
exposing kernel addresses.

copy the mode clamping to 0777 from sem to shm and msg.


while here, make sure that the compat callers to sysv_ipc clear
the contents of the compat structure before setting the result
members to ensure padding bytes are cleared.

don't set/copy _sem_base, _msg_first, _msg_last or _shm_internal.
even if used, which seems very dodgy, they leak KVAs as well.
possibly this may affect linux binaries, in particular, the
comments around _shm_internal ("XXX Oh well.") may mean apps
rely upon these but hopefully not -- the comments date back to
rev 1.1 in 1995.

the _key, _seq and _msg_cbytes members are exported as before as
i found multiple consumers of these (no less than ipcs(1), and
they appear to be useful for debugging and more.


XXX: the naming of compat functions have too many styles. there
are at least 3 different ones changed here.
 1.7  01-Apr-2009  christos branches: 1.7.38; 1.7.42; 1.7.50; 1.7.56; 1.7.64;
cast segsz to int.
 1.6  19-Jan-2009  christos branches: 1.6.2;
Provide compatibility for pre-christos-time_t sysv sysctls.
 1.5  11-Jan-2009  christos merge christos-time_t
 1.4  12-Nov-2005  simonb branches: 1.4.4; 1.4.22; 1.4.76; 1.4.78; 1.4.82; 1.4.92;
Copyright maintenance - only include the copyrights from the original
sys/*.h files that were in the files at the time the old structures
were present.
 1.3  11-Nov-2005  christos Move more compat stuff from sys.
 1.2  11-Nov-2005  tron Include "sys/ipc.h" to get definition of "ipc_perm14" structure.
This fixes the build of "pecoff_exec" LKM.
 1.1  10-Nov-2005  christos move the compat code out of the sys file.
 1.4.92.3  28-Apr-2009  skrll Sync with HEAD.
 1.4.92.2  03-Mar-2009  skrll Sync with HEAD.
 1.4.92.1  19-Jan-2009  skrll Sync with HEAD.
 1.4.82.1  04-May-2009  yamt sync with head.
 1.4.78.2  09-Nov-2008  christos garbage collect all the conversion functions and put them in the header
files so that userland can share them. Also fix bugs in them!
 1.4.78.1  29-Mar-2008  christos Welcome to the time_t=long long dev_t=uint64_t branch.
 1.4.76.1  17-Jan-2009  mjf Sync with HEAD.
 1.4.22.2  21-Jun-2006  yamt sync with head.
 1.4.22.1  12-Nov-2005  yamt file shm.h was added on branch yamt-lazymbuf on 2006-06-21 15:00:00 +0000
 1.4.4.2  11-Dec-2005  christos Sync with head.
 1.4.4.1  12-Nov-2005  christos file shm.h was added on branch ktrace-lwp on 2005-12-11 10:28:47 +0000
 1.6.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.7.64.1  10-Jun-2019  christos Sync with HEAD
 1.7.56.1  23-Feb-2019  martin Pull up following revision(s) (requested by mrg in ticket #1195):
sys/compat/sys/ipc.h: revision 1.6
sys/compat/sys/ipc.h: revision 1.7
sys/compat/sys/shm.h: revision 1.8
sys/kern/sysv_shm.c: revision 1.133
sys/compat/sys/sem.h: revision 1.7
sys/compat/linux/common/linux_ipc.c: revision 1.56
sys/compat/netbsd32/netbsd32_conv.h: revision 1.38
sys/kern/sysv_sem.c: revision 1.96
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.28
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.29
sys/compat/linux32/common/linux32_ipccall.c: revision 1.12
sys/kern/sysv_msg.c: revision 1.73
sys/compat/sys/msg.h: revision 1.6

for sysv ipc stat operations, explicitly copy the exported parts
instead of the whole ds structure.
besides triggering a recently added assert in netbsd32, this stops
exposing kernel addresses.

copy the mode clamping to 0777 from sem to shm and msg.

while here, make sure that the compat callers to sysv_ipc clear
the contents of the compat structure before setting the result
members to ensure padding bytes are cleared.

don't set/copy _sem_base, _msg_first, _msg_last or _shm_internal.
even if used, which seems very dodgy, they leak KVAs as well.
possibly this may affect linux binaries, in particular, the
comments around _shm_internal ("XXX Oh well.") may mean apps
rely upon these but hopefully not -- the comments date back to
rev 1.1 in 1995.

the _key, _seq and _msg_cbytes members are exported as before as
i found multiple consumers of these (no less than ipcs(1), and
they appear to be useful for debugging and more.

XXX: the naming of compat functions have too many styles. there
are at least 3 different ones changed here.

fix naming errors in previous. (this file is no longer compiled, but
this fix makes the pull up more obvious, before deleting this file.)

include libkern.h or strings.h. should fix i386 build issues.
 1.7.50.1  23-Feb-2019  martin Pull up following revision(s) (requested by mrg in ticket #1679):
sys/compat/sys/ipc.h: revision 1.6
sys/compat/sys/ipc.h: revision 1.7
sys/compat/sys/shm.h: revision 1.8
sys/kern/sysv_shm.c: revision 1.133
sys/compat/sys/sem.h: revision 1.7
sys/compat/linux/common/linux_ipc.c: revision 1.56
sys/compat/netbsd32/netbsd32_conv.h: revision 1.38
sys/kern/sysv_sem.c: revision 1.96
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.28
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.29
sys/compat/linux32/common/linux32_ipccall.c: revision 1.12
sys/kern/sysv_msg.c: revision 1.73
sys/compat/sys/msg.h: revision 1.6

for sysv ipc stat operations, explicitly copy the exported parts
instead of the whole ds structure.
besides triggering a recently added assert in netbsd32, this stops
exposing kernel addresses.

copy the mode clamping to 0777 from sem to shm and msg.

while here, make sure that the compat callers to sysv_ipc clear
the contents of the compat structure before setting the result
members to ensure padding bytes are cleared.

don't set/copy _sem_base, _msg_first, _msg_last or _shm_internal.
even if used, which seems very dodgy, they leak KVAs as well.
possibly this may affect linux binaries, in particular, the
comments around _shm_internal ("XXX Oh well.") may mean apps
rely upon these but hopefully not -- the comments date back to
rev 1.1 in 1995.

the _key, _seq and _msg_cbytes members are exported as before as
i found multiple consumers of these (no less than ipcs(1), and
they appear to be useful for debugging and more.

XXX: the naming of compat functions have too many styles. there
are at least 3 different ones changed here.

fix naming errors in previous. (this file is no longer compiled, but
this fix makes the pull up more obvious, before deleting this file.)

include libkern.h or strings.h. should fix i386 build issues.
 1.7.42.1  23-Feb-2019  martin Pull up following revision(s) (requested by mrg in ticket #1679):
sys/compat/sys/ipc.h: revision 1.6
sys/compat/sys/ipc.h: revision 1.7
sys/compat/sys/shm.h: revision 1.8
sys/kern/sysv_shm.c: revision 1.133
sys/compat/sys/sem.h: revision 1.7
sys/compat/linux/common/linux_ipc.c: revision 1.56
sys/compat/netbsd32/netbsd32_conv.h: revision 1.38
sys/kern/sysv_sem.c: revision 1.96
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.28
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.29
sys/compat/linux32/common/linux32_ipccall.c: revision 1.12
sys/kern/sysv_msg.c: revision 1.73
sys/compat/sys/msg.h: revision 1.6

for sysv ipc stat operations, explicitly copy the exported parts
instead of the whole ds structure.
besides triggering a recently added assert in netbsd32, this stops
exposing kernel addresses.

copy the mode clamping to 0777 from sem to shm and msg.

while here, make sure that the compat callers to sysv_ipc clear
the contents of the compat structure before setting the result
members to ensure padding bytes are cleared.

don't set/copy _sem_base, _msg_first, _msg_last or _shm_internal.
even if used, which seems very dodgy, they leak KVAs as well.
possibly this may affect linux binaries, in particular, the
comments around _shm_internal ("XXX Oh well.") may mean apps
rely upon these but hopefully not -- the comments date back to
rev 1.1 in 1995.

the _key, _seq and _msg_cbytes members are exported as before as
i found multiple consumers of these (no less than ipcs(1), and
they appear to be useful for debugging and more.

XXX: the naming of compat functions have too many styles. there
are at least 3 different ones changed here.

fix naming errors in previous. (this file is no longer compiled, but
this fix makes the pull up more obvious, before deleting this file.)

include libkern.h or strings.h. should fix i386 build issues.
 1.7.38.1  23-Feb-2019  martin Pull up following revision(s) (requested by mrg in ticket #1679):
sys/compat/sys/ipc.h: revision 1.6
sys/compat/sys/ipc.h: revision 1.7
sys/compat/sys/shm.h: revision 1.8
sys/kern/sysv_shm.c: revision 1.133
sys/compat/sys/sem.h: revision 1.7
sys/compat/linux/common/linux_ipc.c: revision 1.56
sys/compat/netbsd32/netbsd32_conv.h: revision 1.38
sys/kern/sysv_sem.c: revision 1.96
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.28
sys/compat/netbsd32/netbsd32_compat_14.c: revision 1.29
sys/compat/linux32/common/linux32_ipccall.c: revision 1.12
sys/kern/sysv_msg.c: revision 1.73
sys/compat/sys/msg.h: revision 1.6

for sysv ipc stat operations, explicitly copy the exported parts
instead of the whole ds structure.
besides triggering a recently added assert in netbsd32, this stops
exposing kernel addresses.

copy the mode clamping to 0777 from sem to shm and msg.

while here, make sure that the compat callers to sysv_ipc clear
the contents of the compat structure before setting the result
members to ensure padding bytes are cleared.

don't set/copy _sem_base, _msg_first, _msg_last or _shm_internal.
even if used, which seems very dodgy, they leak KVAs as well.
possibly this may affect linux binaries, in particular, the
comments around _shm_internal ("XXX Oh well.") may mean apps
rely upon these but hopefully not -- the comments date back to
rev 1.1 in 1995.

the _key, _seq and _msg_cbytes members are exported as before as
i found multiple consumers of these (no less than ipcs(1), and
they appear to be useful for debugging and more.

XXX: the naming of compat functions have too many styles. there
are at least 3 different ones changed here.

fix naming errors in previous. (this file is no longer compiled, but
this fix makes the pull up more obvious, before deleting this file.)

include libkern.h or strings.h. should fix i386 build issues.

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