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c8e781f6e0
freebsd-nq/sys
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Pawel Jakub Dawidek c8e781f6e0 Revert r240931, as the previous comment was actually in sync with POSIX. 
I have to note that POSIX is simply stupid in how it describes O_EXEC/fexecve
and friends. Yes, not only inconsistent, but stupid.

In the open(2) description, O_RDONLY flag is described as:

	O_RDONLY	Open for reading only.

Taken from:

	http://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html

Note "for reading only". Not "for reading or executing"!

In the fexecve(2) description you can find:

	The fexecve() function shall fail if:

	[EBADF]
		The fd argument is not a valid file descriptor open for executing.

Taken from:

	http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html

As you can see the function shall fail if the file was not open with O_EXEC!

And yet, if you look closer you can find this mess in the exec.html:

	Since execute permission is checked by fexecve(), the file description
	fd need not have been opened with the O_EXEC flag.

Yes, O_EXEC flag doesn't have to be specified after all. You can open a file
with O_RDONLY and you still be able to fexecve(2) it.
2012-09-27 16:43:23 +00:00
..
amd64 After r205013, amd64 and i386 CPU family and model IDs were printed out 2012-09-21 10:31:19 +00:00
arm Implementing pmap_kextract(va) as pmap_extract(kernel_pmap, va) is 2012-09-27 05:39:42 +00:00
boot MFi386: revision 240637 2012-09-23 08:50:54 +00:00
bsm
cam Remove useless NULL checks after M_WAITOK allocations. 2012-09-27 10:51:38 +00:00
cddl Merge recent vendor changes in ZFS. 2012-09-26 09:37:58 +00:00
compat Remove redundant check 2012-09-12 10:12:03 +00:00
conf Improve the check for p4 opened files. 2012-09-22 07:44:36 +00:00
contrib Fix panic introduced by me in r240835, when zero weight 2012-09-25 12:45:41 +00:00
crypto
ddb Update the ddb and gdb backends for the new 'trace_thread' hook. 2012-04-12 21:34:58 +00:00
dev Make sure the "wMaxPacketSize" limitations are respected. 2012-09-27 15:45:24 +00:00
fs Modify the NFSv4 client so that it can handle owner 2012-09-20 02:49:25 +00:00
gdb Update the ddb and gdb backends for the new 'trace_thread' hook. 2012-04-12 21:34:58 +00:00
geom Use the topology lock to protect list of providers while withering them. 2012-09-22 12:41:49 +00:00
gnu/fs Add VFCF_READONLY flag that indicates ntfs and xfs file systems are 2012-09-12 03:42:52 +00:00
i386 After r205013, amd64 and i386 CPU family and model IDs were printed out 2012-09-21 10:31:19 +00:00
ia64 userret() already checks for td_locks when INVARIANTS is enabled, so 2012-09-08 18:27:11 +00:00
isa
kern Revert r240931, as the previous comment was actually in sync with POSIX. 2012-09-27 16:43:23 +00:00
kgssapi
libkern s/ is is / is /g 2012-09-14 22:00:03 +00:00
mips Prefer __containerof() above member2struct(). 2012-09-15 19:28:54 +00:00
modules Add TRIM support. 2012-09-23 19:40:58 +00:00
net - In the bridge_enqueue() do success/error accounting for 2012-09-26 20:09:48 +00:00
net80211 Fix a crash bug introduced in the iterate node work recently done. 2012-09-16 22:45:00 +00:00
netatalk
netgraph o Create directory sys/netpfil, where all packet filters should 2012-09-14 11:51:49 +00:00
netinet Fix bug in TCP_KEEPCNT setting, which slipped in in the last round 2012-09-27 07:13:21 +00:00
netinet6 Merge the projects/pf/head branch, that was worked on for last six months, 2012-09-08 06:41:54 +00:00
netipsec Add missing break 2012-09-18 08:00:43 +00:00
netipx
netnatm Reimplement the netisr framework in order to support parallel netisr 2009-06-01 10:41:38 +00:00
netncp Add characters mapping for codepages used in Germany. 2012-06-01 03:59:08 +00:00
netpfil EBUSY is a better reply for refusing to unload pf(4) or pfsync(4). 2012-09-22 19:03:11 +00:00
netsmb Change a duplicated check to clarify that we really want to set a 2012-07-10 21:02:59 +00:00
nfs - Typo fix 2012-08-16 19:22:34 +00:00
nfsclient Do not leave invalid pages in the object after the short read for a 2012-08-14 11:45:47 +00:00
nfsserver
nlm Fix grammar. 2012-08-16 13:01:56 +00:00
ofed Align the PCI Express #defines with the style used for the PCI-X 2012-09-18 22:04:59 +00:00
opencrypto
pc98 MFi386: revision 237445 2012-09-23 09:13:57 +00:00
pci intpm: add ATI IXP400 pci id 2012-04-16 10:33:46 +00:00
powerpc Move the prototype for savectx from cpu.h to pcb.h, as it is on other 2012-09-23 17:33:16 +00:00
rpc Partial revert of r239963: 2012-09-24 03:14:17 +00:00
security Check vplabel for NULL before dereferencing it. Fixes a panic 2012-05-03 15:51:34 +00:00
sparc64 Correct double "the the" 2012-09-14 21:28:56 +00:00
sys Add rounddown2() macro similar to the roundup2() macro. 2012-09-22 17:49:25 +00:00
teken
tools
ufs Remove unused member of struct indir (in_exists) from UFS and EXT2 code. 2012-08-17 17:45:27 +00:00
vm Address a race condition that was introduced in r238212. Unless the page 2012-09-23 17:42:39 +00:00
x86 Allow static DMA allocations that allow for enough segments to do page-sized 2012-08-17 14:14:25 +00:00
xdr
xen
Makefile