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reboot: Implement -o to set kernel options for next boot

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Sponsored by:		Netflix
Reviewed by:		kevans
Differential Revision:	https://reviews.freebsd.org/D43829
This commit is contained in:
Warner Losh 2024-02-12 11:46:03 -07:00
parent 9dcf6cbd83
commit 91d2407702
2 changed files with 11 additions and 1 deletions
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7
sbin/reboot/reboot.8
View File

@ -39,18 +39,22 @@
.Op Fl DflNnpq
.Op Fl e Ar variable=value
.Op Fl k Ar kernel
.Op Fl o Ar options
.Nm
.Op Fl cDdflNnpqr
.Op Fl e Ar variable=value
.Op Fl k Ar kernel
.Op Fl o Ar options
.Nm fasthalt
.Op Fl DflNnpq
.Op Fl e Ar variable=value
.Op Fl k Ar kernel
.Op Fl o Ar options
.Nm fastboot
.Op Fl dDflNnpq
.Op Fl e Ar variable=value
.Op Fl k Ar kernel
.Op Fl o Ar options
.Sh DESCRIPTION
The
.Nm halt
@ -146,6 +150,9 @@ This can happen when devices have been disconnected, such as with
.It Fl n
The file system cache is not flushed.
This option should probably not be used.
.It Fl o Ar options
This option
allows the passing of kernel flags for the next boot.
.It Fl p
The system will turn off the power if it can.
If the power down action fails, the system

5
sbin/reboot/reboot.c
View File

@ -180,7 +180,7 @@ main(int argc, char *argv[])
} else
howto = 0;
Dflag = fflag = lflag = Nflag = nflag = qflag = false;
while ((ch = getopt(argc, argv, "cDde:k:lNnpqr")) != -1)
while ((ch = getopt(argc, argv, "cDde:k:lNno:pqr")) != -1)
switch(ch) {
case 'c':
howto |= RB_POWERCYCLE;
@ -212,6 +212,9 @@ main(int argc, char *argv[])
nflag = true;
Nflag = true;
break;
case 'o':
add_env(&env, "kernel_options", optarg);
break;
case 'p':
howto |= RB_POWEROFF;
break;