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svok: new applet (daemontools compat)

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function                                             old     new   delta
svok_main                                              -     127    +127
packed_usage                                       32705   32757     +52
applet_names                                        2756    2761      +5
applet_main                                         1588    1592      +4
bb_banner                                             46      47      +1
sv                                                  1286    1284      -2
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(add/remove: 1/0 grow/shrink: 4/1 up/down: 189/-2)            Total: 187 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-03-30 20:02:33 +02:00
parent d892f7137f
commit 0d79d7709d
3 changed files with 61 additions and 7 deletions
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3
examples/var_service/README_distro_proposal.txt
View File

@@ -246,7 +246,8 @@ relative to the system-wide service directory.
This proposal asks developers of other daemontools implementations
to add "svc" command to their projects]
The "svok DIR" tool exits 0 if service is running, and nonzero if not.
The "svok DIR" tool exits 0 if service supervisor is running
(with service itself either running or stopped), and nonzero if not.
Other tools with different names and APIs may exist; however
for portability scripts should use the above tools.

8
examples/var_service/ifplugd_if/run
View File

@@ -16,7 +16,7 @@ exec \
env - PATH="$PATH" \
softlimit \
setuidgid root \
ifplugd -apqlns -t3 -u8 -d8 -i "$if" -r "$pwd/ifplugd_handler"
ifplugd -aqlns -t3 -u8 -d8 -i "$if" -r "$pwd/ifplugd_handler"
# We use -t3 to wake ifplugd up less often.
# If after three tests (3*3=9 > 8) link state seen to be different,
@@ -24,6 +24,12 @@ ifplugd -apqlns -t3 -u8 -d8 -i "$if" -r "$pwd/ifplugd_handler"
# IOW: short link losses will be ignored, longer ones
# will trigger DHCP reconfiguration and such (see handler code).
# -l makes ifplugd run either "up" or "down" script on startup.
# For example, if wired eth cable is unplugged, this stops dhcp service
# from pointlessly trying to get a lease.
# -q means that stopping monitoring does not stop dhcp/zcip/etc:
# presumably, admin decided to control them manually.
#-a Don't up interface automatically
#-p Don't run "up" script on startup
#-q Don't run "down" script on exit