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144 Commits

Author SHA1 Message Date
Denys Vlasenko
ad795510d9 mdev: if a "future" mdev.seq is seen, do not overwrite it with ours 
This was seen to happen if two mdevs are run in parallel,
mdev.seq is empty, and the "newer" one manages to write it first.

function                                             old     new   delta
mdev_main                                           1366    1388     +22
atoll                                                  -      20     +20

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-04-19 18:55:12 +02:00
Denys Vlasenko
bd77e9d609 mdev: improve logging 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-04-19 18:54:49 +02:00
Denys Vlasenko
8dff01d06a libbb: introduce and use is_prefixed_with() 
function                                             old     new   delta
is_prefixed_with                                       -      18     +18
complete_username                                     78      77      -1
man_main                                             737     735      -2
fsck_device                                          429     427      -2
unpack_ar_archive                                     80      76      -4
strip_unsafe_prefix                                  105     101      -4
singlemount                                         1054    1050      -4
rtc_adjtime_is_utc                                    90      86      -4
resolve_mount_spec                                    88      84      -4
parse_one_line                                      1029    1025      -4
parse_conf                                          1460    1456      -4
may_wakeup                                            83      79      -4
loadkmap_main                                        219     215      -4
get_irqs_from_stat                                   103      99      -4
get_header_cpio                                      913     909      -4
findfs_main                                           79      75      -4
fbsplash_main                                       1230    1226      -4
load_crontab                                         776     771      -5
expand_vars_to_list                                 1151    1146      -5
date_main                                            881     876      -5
skip_dev_pfx                                          30      24      -6
make_device                                         2199    2193      -6
complete_cmd_dir_file                                773     767      -6
run_applet_and_exit                                  715     708      -7
uudecode_main                                        321     313      -8
pwdx_main                                            197     189      -8
execute                                              568     560      -8
i2cdetect_main                                      1186    1176     -10
procps_scan                                         1242    1230     -12
procps_read_smaps                                   1017    1005     -12
process_module                                       746     734     -12
patch_main                                          1903    1891     -12
nfsmount                                            3572    3560     -12
stack_machine                                        126     112     -14
process_timer_stats                                  449     435     -14
match_fstype                                         111      97     -14
do_ipaddr                                           1344    1330     -14
open_list_and_close                                  359     343     -16
get_header_tar                                      1795    1779     -16
prepend_new_eth_table                                340     323     -17
fsck_main                                           1811    1794     -17
find_iface_state                                      56      38     -18
dnsd_main                                           1321    1303     -18
base_device                                          179     158     -21
find_keyword                                         104      82     -22
handle_incoming_and_exit                            2785    2762     -23
parse_and_put_prompt                                 774     746     -28
modinfo                                              347     317     -30
find_action                                          204     171     -33
update_passwd                                       1470    1436     -34
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540)         Total: -522 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-03-12 17:48:34 +01:00
Denys Vlasenko
26a8b9f196 mdev: treat zero-length /dev/mdev.seq the same as "\n" one. Closes 7334 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-09-08 18:19:15 +02:00
Nikolaus Voss
c3cf1e30a3 mdev: use $DEVNAME in uevent sysfs file for device node name 
516530c932 uses $DEVNAME variable
for device node name. This is fine, but only works for hotplugging,
"mdev -s" will behave differently when DEVNAME and basename(path)
differ.

This patch extracts the DEVNAME from the uevent sysfs file in
make_device(), thus works for hot- and coldplugging; so using
the environment DEVNAME on hotplug events is no longer necessary.

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-05-13 03:55:11 +02:00
Denys Vlasenko
d35cbad0ef mdev: call index_in_strings on $ACTION only after we checked it for NULL 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-04-02 14:37:06 +02:00
Denys Vlasenko
4424dfd69b mdev: fix build failure 
The error was "error: 'struct globals' has no member named 'parser'"

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-03-17 23:01:17 +01:00
Denys Vlasenko
5bce135e36 mdev: improve $SEQ handling; improve debug logging 
Sequential run of concurrent mdev's was too simplistic:
they waited for /dev/mdev.seq to match. This could sometimes
cause cumulative loss of time on the order of a second.

Added SIGCHLD signaling from exiting mdev to all other mdev's.
Added debugging required to see that code actually works as intended.

Example of /dev/mdev.log (with "woken up" elevated from dbg lvl 3 to 2):

mdev[1023]: first seq written
     ^^^^ seq, not pid
mdev[1023]: 35.022395 ACTION:add SUBSYSTEM:module DEVNAME:(null) DEVPATH:/module/lib80211
mdev[1023]: rule matched, line -1
                          ^^^^^^^ means "default rule"
mdev[1023]: 35.022676 exiting
            ^^^^^^^^^ second,usec timestamp
mdev[1024]: 35.069691 ACTION:add SUBSYSTEM:vc DEVNAME:vcs9 DEVPATH:/devices/virtual/vc/vcs9
mdev[1024]: dev 7,9
mdev[1025]: 35.069889 waiting for '1024'
mdev[1026]: 35.069946 waiting for '1024'
mdev[1027]: 35.070151 waiting for '1024'
mdev[1024]: rule matched, line -1
mdev[1024]: mknod vcs9 (7,9) 20660 0:0
mdev[1024]: 35.070346 exiting
mdev[1025]: woken up
mdev[1026]: woken up
mdev[1025]: 35.071213 ACTION:add SUBSYSTEM:vc DEVNAME:vcsa9 DEVPATH:/devices/virtual/vc/vcsa9
            ^^^^^^^^^ took only a millisecond to start running after prev mdev exited
mdev[1025]: dev 7,137
mdev[1027]: woken up
mdev[1025]: rule matched, line -1
mdev[1025]: mknod vcsa9 (7,137) 20660 0:0
mdev[1025]: 35.072109 exiting

function                                             old     new   delta
mdev_main                                            849    1372    +523
curtime                                                -      59     +59
dirAction                                             87     134     +47
static.ts                                              -       8      +8
keywords                                              19      12      -7
make_device                                         2189    2119     -70

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 10:51:41 +01:00
Denys Vlasenko
40b97fb31e mdev: add environment variable match 
function                                             old     new   delta
make_device                                         1998    2189    +191
clean_up_cur_rule                                     61      96     +35
dirAction                                             75      87     +12
mdev_main                                            838     849     +11
packed_usage                                       29272   29273      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 250/0)             Total: 250 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-26 00:40:46 +01:00
Denys Vlasenko
ba76b7a40b mdev: chdir back to /dev after trying to read firmware 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-04 23:35:27 +01:00
Denys Vlasenko
6e29d07417 mdev: extend debug logging output 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-30 16:51:22 +01:00
Denys Vlasenko
4609f477c7 mdev: fix mode of dir1 in =dir1/dir2/file rule 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-21 01:22:12 +01:00
Christoph Lohmann
25cb5aae2b mdev: tell kernel that we didn't find the firmware 
function                                             old     new   delta
mdev_main                                            797     801      +4

Signed-off-by: Christoph Lohmann <20h@r-36.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-19 23:39:45 +02:00
Denys Vlasenko
aaf827203d Merge branch 'master' of git+ssh://vda@busybox.net/var/lib/git/busybox 2012-05-19 22:37:07 +02:00
Denys Vlasenko
b6beada5a1 mdev: remove undocumented subsystem/devname matching hack 
It was colliding with matching of devnames with slashes.
We need a more generic way to examine env.vars in rules anyway.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-18 15:11:16 +02:00
Denys Vlasenko
ea57f51819 mdev: when found, print major,minor into mdev.log 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-18 11:39:57 +02:00
Denys Vlasenko
8d11854678 tweak help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-18 04:47:18 +02:00
Denys Vlasenko
516530c932 mdev: add support for $DEVNAME and /dev/mdev.log debug aid 
function                                             old     new   delta
make_device                                         1843    2083    +240
mdev_main                                            712     804     +92
packed_usage                                       29236   29251     +15
keywords                                             288      19    -269
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 347/-269)           Total: 78 bytes
   text    data     bss     dec     hex filename
 887506     497    7584  895587   daa63 busybox_old
 887982     497    7584  896063   dac3f busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-18 04:45:35 +02:00
Denys Vlasenko
c9665631d3 mdev: fix mode of creatred node if config file support is not configured 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-04-21 14:35:32 +02:00
Denys Vlasenko
638dbc34b3 mdev: add a comment. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-02-06 01:00:00 +01:00
Javier Viguera
e8758eaf4f mdev: fix wrong sizeof 
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-01-30 02:15:13 +01:00
Denys Vlasenko
499597d6ef mdev: do not treat non-leading '#' chars as start of comment. Closes 4676 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-01-11 00:37:17 +01:00
Denys Vlasenko
45f0a1156d mdev: trim overlong comments. No code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-22 04:55:47 +02:00
Denys Vlasenko
3eccd7ecbe mdev: don't reparse rules on -s 
function                                             old     new   delta
make_device                                         1648    1843    +195
clean_up_cur_rule                                      -      61     +61
make_default_cur_rule                                  -      41     +41
mdev_main                                            690     712     +22
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/0 up/down: 319/0)             Total: 319 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-22 03:46:30 +02:00
Denys Vlasenko
16714245f9 add INIT_G()'s. No code changes. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-21 01:59:15 +02:00
Denys Vlasenko
5c6ba6c56f mdev: expand --help so that it's actually useful. 
function                                             old     new   delta
packed_usage                                       28634   28822    +188

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-19 12:18:11 +02:00
Denys Vlasenko
4566e172eb simplify parsing of /etc/busybox.conf 
function                                             old     new   delta
parse_config_file                                    799     667    -132

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-05-16 00:01:08 +02:00
Pere Orga
5bc8c005a8 move remaining help text from include/usage.src.h 
Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-11 03:29:49 +02:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular 
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>
 2010-08-16 20:14:46 +02:00
Denys Vlasenko
f2860bf6d3 mdev: fix non-working device deletion, add a test for that 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-16 14:26:15 +02:00
Denys Vlasenko
dd8adde386 *: introduce and use bb_unsetenv_and_free 
function                                             old     new   delta
bb_unsetenv_and_free                                   -      17     +17
tcpudpsvd_main                                      1819    1810      -9
safe_setenv                                           58      47     -11
udhcp_run_script                                     630     616     -14
make_device                                         1683    1663     -20
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 17/-54)            Total: -37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-06-24 05:00:50 +02:00
Denys Vlasenko
b38af7bd31 mdev: add "!" syntax support 
Based on the patch by Steve Bennett <steveb@workware.net.au>

function                                             old     new   delta
make_device                                         1640    1673     +33

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-02 06:47:14 +02:00
Denys Vlasenko
651a2697f7 *: merge some common strings 
text   data    bss    dec    hexfilename
 838650   8009      0 846659  ceb43busybox_old
 838519   8009      0 846528  ceac0busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-23 16:25:17 +01:00
Denys Vlasenko
8d4a8d195d mdev: fix a trivial SEGV 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-03-16 18:37:19 +01:00
Denys Vlasenko
64bb95a361 mdev: fix subsystem passing (new kernels broke it again) - bugs 639, 721. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-24 10:39:47 +01:00
Denys Vlasenko
98a4c7cf3d *: suppress ~60% of "aliased warnings" on gcc-4.4.1 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-04 15:00:15 +01:00
Denys Vlasenko
1612c757d0 mdev: print line# in error messages 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-07 03:33:05 +01:00
Denys Vlasenko
e62a2463ec mdev: do not die on mknod errors 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-01 21:51:31 +01:00
Bernhard Reutner-Fischer
b04f058e76 mdev: adjust error message 
function                                             old     new   delta
.rodata                                           126715  126706      -9

(reusing common error string)

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-10-27 17:13:45 +01:00
Bernhard Reutner-Fischer
933993a461 mdev: handle string modes 
parse ugoa=rwxXst via bb_parse_mode (+5b)

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-10-27 17:13:12 +01:00
Bernhard Reutner-Fischer
6531f0923b mdev: tiny shrinkage by index_in_strings 
text	   data	    bss	    dec	    hex	filename
      2633	      0	      0	   2633	    a49	util-linux/mdev.o.old
      2624	      0	      0	   2624	    a40	util-linux/mdev.o

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-10-27 17:12:26 +01:00
Denys Vlasenko
5478aaf5b8 mdev: be more permissive on errors (dont die): mdev -s users want that 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-02 13:17:10 +02:00
Denys Vlasenko
90db359972 mdev: set $MDEV correctly for renamed nodes 
function                                             old     new   delta
make_device                                         1467    1502     +35
build_alias                                           78       -     -78

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-02 13:07:11 +02:00
Denys Vlasenko
2f86ca1350 mdev: fix the case when move rule deletes node with name == device_name 
Signed-off-by: Jean Wolter <jw5@os.inf.tu-dresden.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-22 01:31:12 +02:00
Denys Vlasenko
76f5e38c82 mdev: revert last wrong commit 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-05-04 21:59:05 +02:00
Denys Vlasenko
aa0a12d549 mdev: do not exit if user:group parse failed. closes bug 309. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-05-02 16:33:10 +02:00
Denys Vlasenko
05ae400830 mdev: fix a case where we mangle device_path string and then use it. 2009-05-01 03:09:54 +02:00
Denis Vlasenko
11c17f75a7 mdev: enlarge inline documentation 2009-04-19 23:38:08 +00:00
Denis Vlasenko
3798db58cf mdev: support $ENVVAR=regex 2009-04-19 21:37:07 +00:00
Denis Vlasenko
c7cc5a9432 mdev: Rob's #if forest removal 
*: remove superfluous conts in "f(type *const param)"
 2009-04-19 01:27:20 +00:00