On some systems like Chromium OS, loading modules from non-verified
filesystems is denied. Only finit_module is allowed because an open
fd is passed which can be checked against a verified location.
Change the module loading code to first attempt finit_module and if
that fails for whatever reason, fall back to the existing logic.
On x86_64, this adds ~80 bytes to modutils/modutils.o and ~68 bytes
to modutils/modprobe-small.o.
Signed-off-by: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
"modprobe minix; echo $?"
Was:
modprobe: corrupted data
modprobe: read error from 'kernel/fs/minix/minix.ko.xz': No such file or directory
modprobe: corrupted data
modprobe: read error from 'kernel/fs/minix/minix.ko.xz': No such file or directory
modprobe: corrupted data
modprobe: read error from 'kernel/fs/minix/minix.ko.xz'
modprobe: 'kernel/fs/minix/minix.ko.xz': Success
0
Now:
modprobe: corrupted data
modprobe: read error from 'kernel/fs/minix/minix.ko.xz'
1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
usecase:
two sd cards are being mounted in parallel at same time on dual core. example
modules which are getting loaded is nls_cp437. While one module is being
loaded , it makes state in /proc/modules as 'coming' and then starts doing its
module init function (in our case - registering nls). meanwhile on other core,
if modprobe returns that is has already been loaded, then it will continue
and search for the nls list which is not yet finished from first module init.
This fails resulting in not mounting sd card.
function old new delta
process_module 667 746 +79
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
"rmmod OUT_OF_TREE_MODULE" was not working, because module is not in depmod file.
In general, rmmod doesn't need scanning, it simply unloads every argv[i].
function old new delta
rmmod - 63 +63
modprobe_main 449 465 +16
process_module 705 667 -38
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 79/-38) Total: 41 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
"modprobe -r MODNAME", after it found the full module pathname,
should strip dirpath before trying to remove the module.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Closes 627 and 7034.
Commonly seen case is (un)loading of an alias
which matches ata_generic and a more specific ata module.
For example:
modprobe [-r] pci:v00008086d00007010sv00000000sd00000000bc01sc01i80
(ata_generic and pata_acpi)
modprobe [-r] pci:v00001106d00000571sv00001509sd00009022bc01sc01i8a
(ata_generic and pata_via)
function old new delta
process_module 615 728 +113
parse_module 309 395 +86
find_alias 621 653 +32
pathname_matches_modname 78 79 +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 232/0) Total: 232 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Fixed some goofs in help text
function old new delta
modprobe_main 494 653 +159
packed_usage 27129 27145 +16
insmod_main 98 95 -3
Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
a bug where it underflows the string
a bug where it never frees parser_t struct
make read_config() return 0 if parser is NULL,
make config_close() accept and ignore NULL parser -
eliminates many if() blocks
reverse the sense of parser bit flags - negative flags
are harder to grok.
hexdump: revert the change to use config parser, it is BIGGER
and also requires additional quirks in parser
*: explicitly use PARSER_NORMAL instead of 0
function old new delta
login_main 1575 1596 +21
config_close 18 29 +11
bbunpack 383 391 +8
qgravechar 106 109 +3
rtnl_tab_initialize 121 117 -4
expand 1697 1693 -4
man_main 717 712 -5
nameif_main 674 668 -6
hexdump_main 597 591 -6
read_config 217 209 -8
dnsd_main 1478 1470 -8
sysctl_main 203 189 -14
config_open2 44 25 -19
make_device 1177 1141 -36
config_read 597 549 -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/11 up/down: 43/-158) Total: -115 bytes
