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Anatol Pomozov 39b6525274 fs: Preserve error code in get_empty_filp(), part 2 
Allocating a file structure in function get_empty_filp() might fail because
of several reasons:
 - not enough memory for file structures
 - operation is not allowed
 - user is over its limit

Currently the function returns NULL in all cases and we loose the exact
reason of the error. All callers of get_empty_filp() assume that the function
can fail with ENFILE only.

Return error through pointer. Change all callers to preserve this error code.

[AV: cleaned up a bit, carved the get_empty_filp() part out into a separate commit
(things remaining here deal with alloc_file()), removed pipe(2) behaviour change]

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Reviewed-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22 23:31:32 -05:00
..
9p virtio: 9p: correctly pass physical address to userspace for high pages 2012-10-22 18:19:36 +10:30
802
8021q 8021q: fix vlan device to inherit the unicast filtering capability flag 2012-11-30 12:07:27 -05:00
appletalk
atm new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ax25
batman-adv batman-adv: fix random jitter calculation 2012-12-26 14:13:23 -08:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2012-12-13 12:00:48 -08:00
bridge bridge: add empty br_mdb_init() and br_mdb_uninit() definitions. 2013-01-03 03:35:22 -08:00
caif caif_usb: Make the driver name check more efficient 2012-12-09 00:34:02 -05:00
can Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-12-13 12:00:02 -08:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2013-01-02 17:32:49 -08:00
core new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
dcb net: Allow DCBnl to use other namespaces besides init_net 2012-12-10 14:09:01 -05:00
dccp inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock 2012-12-14 13:14:07 -05:00
decnet net: Push capable(CAP_NET_ADMIN) into the rtnl methods 2012-11-18 20:32:44 -05:00
dns_resolver Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-12-16 15:40:50 -08:00
dsa dsa: Hide core config options; make drivers select what they need 2012-11-26 17:10:44 -05:00
ethernet
ieee802154 6lowpan: consider checksum bytes in fragmentation threshold 2012-11-30 12:19:24 -05:00
ipv4 new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ipv6 ipv6: use addrconf_get_prefix_route for prefix route lookup [v2] 2013-01-10 14:22:54 -08:00
ipx
irda TTY/Serial merge for 3.8-rc1 2012-12-11 14:08:47 -08:00
iucv s390/irq: remove split irq fields from /proc/stat 2013-01-08 10:57:07 +01:00
key net: Allow userns root to control llc, netfilter, netlink, packet, and xfrm 2012-11-18 20:32:45 -05:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-11-10 18:32:51 -05:00
lapb
llc net: Allow userns root to control llc, netfilter, netlink, packet, and xfrm 2012-11-18 20:32:45 -05:00
mac80211 mac80211: fix maximum MTU 2013-01-03 13:00:01 +01:00
mac802154 mac802154: fix NOHZ local_softirq_pending 08 warning 2013-01-04 13:47:21 -08:00
netfilter new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
netlabel
netlink new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
netrom
nfc nfc: remove noisy message from llcp_sock_sendmsg 2012-12-13 12:58:10 -05:00
openvswitch openvswitch: Use RCU callback when detaching netdevices. 2012-11-28 14:04:34 -08:00
packet net: Allow userns root to control llc, netfilter, netlink, packet, and xfrm 2012-11-18 20:32:45 -05:00
phonet net: Push capable(CAP_NET_ADMIN) into the rtnl methods 2012-11-18 20:32:44 -05:00
rds IB/rds: suppress incompatible protocol when version is known 2012-12-26 15:17:37 -08:00
rfkill Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-12-13 12:00:02 -08:00
rose
rxrpc
sched net: sched: integer overflow fix 2012-12-22 00:03:00 -08:00
sctp sctp: fix Kconfig bug in default cookie hmac selection 2013-01-07 09:27:06 -08:00
sunrpc new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
tipc tipc: refactor accept() code for improved readability 2012-12-07 17:23:24 -05:00
unix new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
wanrouter
wimax
wireless net, wireless: overwrite default_ethtool_ops 2013-01-11 15:55:48 -08:00
x25
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2012-11-22 15:25:55 -05:00
compat.c
Kconfig
Makefile ipv6: Preserve ipv6 functionality needed by NET 2012-11-18 02:34:00 -05:00
nonet.c
socket.c fs: Preserve error code in get_empty_filp(), part 2 2013-02-22 23:31:32 -05:00
sysctl_net.c user_ns: get rid of duplicate code in net_ctl_permissions 2012-11-18 20:32:45 -05:00