diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/boot/common/loader.8 | 6 | ||||
| -rw-r--r-- | sys/boot/forth/loader.conf | 1 | ||||
| -rw-r--r-- | sys/kern/kern_shutdown.c | 11 |
3 files changed, 18 insertions, 0 deletions
diff --git a/sys/boot/common/loader.8 b/sys/boot/common/loader.8 index 185f391..d7466d5 100644 --- a/sys/boot/common/loader.8 +++ b/sys/boot/common/loader.8 @@ -392,6 +392,12 @@ when the kernel is booted. This can be overridden by setting .Va rootdev explicitly. +.It Va dumpdev +A name of device where the kernel can save a crash dump in the case +of a panic. This automatically sets +.Va kern.dumpdev +.Xr sysctl 3 +MIB variable. .El .Pp Other variables are used to override kernel tunable parameters. diff --git a/sys/boot/forth/loader.conf b/sys/boot/forth/loader.conf index 7256ea6..e04aa4a 100644 --- a/sys/boot/forth/loader.conf +++ b/sys/boot/forth/loader.conf @@ -64,6 +64,7 @@ module_path="/boot/kernel;/boot/modules;/modules" # Set the module search path #boot_verbose="NO" # Causes extra debugging information to be printed #init_path="/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall" # Sets the list of init candidates +#dumpdev="ad0s1b" # Set device for crash dumps ############################################################## diff --git a/sys/kern/kern_shutdown.c b/sys/kern/kern_shutdown.c index 9263af9..d0cfe6e 100644 --- a/sys/kern/kern_shutdown.c +++ b/sys/kern/kern_shutdown.c @@ -54,6 +54,7 @@ #include <sys/eventhandler.h> #include <sys/kernel.h> #include <sys/kthread.h> +#include <sys/malloc.h> #include <sys/mount.h> #include <sys/proc.h> #include <sys/reboot.h> @@ -457,6 +458,16 @@ setdumpdev(dev_t dev) static void dump_conf(void *dummy) { + char *path; + dev_t dev; + + path = malloc(MNAMELEN, M_TEMP, M_WAITOK); + if (TUNABLE_STR_FETCH("dumpdev", path, MNAMELEN) != 0) { + dev = getdiskbyname(path); + if (dev != NODEV) + dumpdev = dev; + } + free(path, M_TEMP); if (setdumpdev(dumpdev) != 0) dumpdev = NODEV; } |
