d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
ae00704002
freebsd-skq/sys
History
mckusick ae00704002 Historically when an application wrote an entire block of a file, 
the kernel allocated a buffer but did not zero it as it was about
to be completely filled by a uiomove() from the user's buffer.
However, if the uiomove() failed, the old contents of the buffer
could be exposed especially if the file was being mmap'ed. The
fix was to always zero the buffer when it was allocated.

This change first attempts the uiomove() to the newly allocated
(and dirty) buffer and only zeros it if the uiomove() fails. The
effect is to eliminate the gratuitous zeroing of the buffer in
the usual case where the uiomove() successfully fills it.

Reviewed by:    kib
Tested by:      scottl
MFC after:      2 weeks (to 9 only)
2012-02-09 22:34:16 +00:00
..
amd64 Reset clock after atrtc(4) is properly resumed. 2012-02-08 21:23:20 +00:00
arm Add C11 macros describing subnormal numbers to float.h. 2012-01-23 06:36:41 +00:00
boot Fix clang warnings. 2012-02-05 20:00:39 +00:00
bsm
cam Avoid panic from unlocking a not locked mutex (in some error cases). 2012-02-06 18:11:00 +00:00
cddl Revert r230913 and r230914. 2012-02-03 13:40:51 +00:00
compat Add 32-bit compat code for AIO kevent flags introduced in revision 230857. 2012-02-05 04:49:31 +00:00
conf Consistently set RPCGEN_CPP when running rpcgen, so the C preprocessor 2012-02-07 09:27:07 +00:00
contrib Allocate our mbuf with m_get2(). 2012-01-17 12:14:26 +00:00
crypto Add support for the extended FPU states on amd64, both for native 2012-01-21 17:45:27 +00:00
ddb Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
dev Remove explicit CC assignment in isci(4) Makefile to allow for building 2012-02-09 17:50:24 +00:00
fs Allow mounting nullfs(5) inside jails. 2012-02-09 10:39:01 +00:00
gdb kern cons: introduce infrastructure for console grabbing by kernel 2011-12-17 15:08:43 +00:00
geom Current implementations of sync(2) and syncer vnode fsync() VOP uses 2012-02-06 11:04:36 +00:00
gnu/fs Use new OSS-based BSD-licensed header for cs sound driver. 2012-02-01 21:38:01 +00:00
i386 Add "nodevice adw" to WITHOUT_SOURCELESS_UCODE. 2012-02-04 13:45:39 +00:00
ia64 Rev. 228360 moved the call to cpu_set_upcall() to happen before 2012-02-08 04:05:38 +00:00
isa - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
kern Add support for mounting devfs inside jails. 2012-02-09 10:22:08 +00:00
kgssapi Add missing break statement to make sure all 3DES etypes really are treated 2011-10-10 09:13:07 +00:00
libkern Implement extensions on top of standards instead of the other way around. 2012-01-03 07:05:30 +00:00
mips - Emulate RDHWR instruction for TLS support 2012-02-09 22:17:13 +00:00
modules Remove explicit CC assignment in isci(4) Makefile to allow for building 2012-02-09 17:50:24 +00:00
net g/c last bit of old ipv6 prefix management. 2012-02-08 22:05:26 +00:00
net80211 Update the 802.11s IE numbers to represent the latest 802.11 amendment standard. 2012-02-08 06:56:19 +00:00
netatalk Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
netgraph Provide a findhook method for ng_socket(4). The node stores a 2012-01-23 16:43:13 +00:00
netinet Set vnet context in callouts and taskqueues. 2012-02-08 13:39:38 +00:00
netinet6 Remove casts from inet6 address testing macros, thus preserving 2012-01-26 12:04:19 +00:00
netipsec Clean up some #endif comments removing from short sections. Add #endif 2012-01-22 02:13:19 +00:00
netipx Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
netnatm
netncp Change ncp_scan_bindery_object() to pass a constant search string. 2011-10-16 08:44:03 +00:00
netsmb Add unicode support to msdosfs and smbfs; original pathes from imura, 2011-11-18 03:05:20 +00:00
nfs Some cleanup of BOOTP code. Initially I wanted to just change the ifioctl() 2011-12-13 07:02:48 +00:00
nfsclient Rename cache_lookup_times() to cache_lookup() and retire the old API and 2012-02-06 17:00:28 +00:00
nfsserver Honor NFSv3 commit call (RFC 1813, Section 3.3.21) where when count is 0, 2011-12-15 02:26:53 +00:00
nlm jwd@ reported a problem via email to freebsd-fs@ on Aug 25, 2011 2012-01-31 02:11:05 +00:00
ofed Remove spurious 8bit chars, turning files into plain ASCII. 2012-01-15 13:23:54 +00:00
opencrypto Add the fo_chown and fo_chmod methods to struct fileops and use them 2011-08-16 20:07:47 +00:00
pc98 Remove full debugger options and enable KDB_TRACE option instead to decrease 2012-02-09 14:15:56 +00:00
pci To save more power, switch to 10/100Mbps link when controller is 2011-11-23 23:29:18 +00:00
powerpc The bus resource adjustment API is not meant to work on active resources. 2012-02-07 19:14:13 +00:00
rpc Both a crash reported on freebsd-current on Oct. 18 under the 2011-11-03 14:38:03 +00:00
security Use strchr() and strrchr(). 2012-01-02 12:12:10 +00:00
sparc64 As it turns out r227960 may still be insufficient with PREEMPTION 2012-01-28 22:42:33 +00:00
sys Add support for mounting devfs inside jails. 2012-02-09 10:22:08 +00:00
teken Link the demo application against ncursesw to make Unicode work. 2011-10-13 14:20:27 +00:00
tools Restore the comment that I removed by accident. 2011-11-09 13:26:59 +00:00
ufs Historically when an application wrote an entire block of a file, 2012-02-09 22:34:16 +00:00
vm Fix NULL dereference panic on attempt to turn off (on system shutdown) 2012-02-01 20:12:44 +00:00
x86 Fix a few bugs in the SRAT parsing code: 2012-01-03 20:53:58 +00:00
xdr
xen Add the GSO prefix descriptor define. 2012-02-01 20:19:33 +00:00
Makefile Improve the cscope target's handling of MD directories. Automatically 2012-01-03 17:31:27 +00:00