ac9ab099c8
- clean up kernel section of minix/com.h somewhat - remove ALLOCMEM and VM_ALLOCMEM calls - remove non-safecopy and minix-vmd support from Inet - remove SYS_VIRVCOPY and SYS_PHYSVCOPY calls - remove obsolete segment encoding in SYS_SAFECOPY* - remove DEVCTL call, svrctl(FSDEVUNMAP), map_driverX - remove declarations of unimplemented svrctl requests - remove everything related to swapping to disk - remove floppysetup.sh - remove traces of rescue device - update DESCRIBE.sh with new devices - some other small changes
50 lines
1.9 KiB
Groff
50 lines
1.9 KiB
Groff
.TH SERVICE 8
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.SH NAME
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service \- Start or stop an operating system server or device driver.
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.SH SYNOPSIS
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.PP
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\fBservice up\fR \fI<service>\fR [\fB-args\fR \fIargs\fR]
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[\fB-dev\fR \fIspecial\fR] [\fB-period\fR \fIticks\fR]
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.PP
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\fBservice down\fR \fI<pid>\fR
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.PP
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\fBservice refresh\fR \fI<pid>\fR
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.PP
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\fBservice shutdown\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.SH DESCRIPTION
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.PP
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Tells the reincarnation server to start or stop a system service, such as a
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server or device driver. The device driver will be automatically restarted when
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it unexpectedly exits, e.g., if it is killed because of a bad pointer.
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Starting requires an absolute path to the binary to be executed.
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.PP
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When an optional period is specified, the reincarnation server sends a status request to the system service after every period. If there the response does not arrive in time, the reincarnation server will kill the misbehaving process and restart a new one. The period must be specified in ticks, but can be appended with HZ to make it seconds.
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.PP
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Stopping a system service requires the process id of a running system service. Issuing a kill command from the shell will not work, since the reincarnation server interprets this as an unexpected exit and will automatically restart a fresh copy of the process. The clean way to restart a process is using the refresh option of the service utility.
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.PP
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If the system is to be shutdown, the reincarnation server should know about this event to prevent it from restarting services that are killed during the shutdown
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sequence.
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.SH EXAMPLES
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.EX "service up /sbin/is -period 5HZ" "Start the IS server and check its status every 5 seconds."
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.br
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.EX "service up /usr/sbin/dp8390 -args DPETH0=pci" "Start the DP8390 ethernet driver, passing one argument."
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.br
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.EX "service down 117" "Stop the system service with process id 117."
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.br
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.SH "SEE ALSO"
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.PP
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.BR boot (8),
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.BR monitor (8)
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