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| author | luoqi <luoqi@FreeBSD.org> | 1999-05-13 04:29:09 +0000 |
|---|---|---|
| committer | luoqi <luoqi@FreeBSD.org> | 1999-05-13 04:29:09 +0000 |
| commit | a6a19d8e19334dfcac5375bbc01911b5b0ea7bd9 (patch) | |
| tree | 2c24454c98d87198b99488d02c3a23610431df25 /sbin/savecore | |
| parent | 923ece6a8c5fdc7c16506b789620383807c0066f (diff) | |
| download | FreeBSD-src-a6a19d8e19334dfcac5375bbc01911b5b0ea7bd9.zip FreeBSD-src-a6a19d8e19334dfcac5375bbc01911b5b0ea7bd9.tar.gz | |
Read dumpdev using sysctl(3) interface. Now savecore should work again
after the dev_t changes.
Diffstat (limited to 'sbin/savecore')
| -rw-r--r-- | sbin/savecore/savecore.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/sbin/savecore/savecore.c b/sbin/savecore/savecore.c index fa75e42..089845e 100644 --- a/sbin/savecore/savecore.c +++ b/sbin/savecore/savecore.c @@ -42,13 +42,14 @@ static const char copyright[] = static char sccsid[] = "@(#)savecore.c 8.3 (Berkeley) 1/2/94"; #endif static const char rcsid[] = - "$Id: savecore.c,v 1.21 1998/07/28 06:38:57 charnier Exp $"; + "$Id: savecore.c,v 1.22 1999/03/12 14:46:00 gallatin Exp $"; #endif /* not lint */ #include <sys/param.h> #include <sys/stat.h> #include <sys/mount.h> #include <sys/syslog.h> +#include <sys/sysctl.h> #include <vm/vm.h> #include <vm/vm_param.h> @@ -74,29 +75,26 @@ static const char rcsid[] = #endif struct nlist current_nl[] = { /* Namelist for currently running system. */ -#define X_DUMPDEV 0 - { "_dumpdev" }, -#define X_DUMPLO 1 +#define X_DUMPLO 0 { "_dumplo" }, -#define X_TIME 2 +#define X_TIME 1 { "_time_second" }, -#define X_DUMPSIZE 3 +#define X_DUMPSIZE 2 { "_dumpsize" }, -#define X_VERSION 4 +#define X_VERSION 3 { "_version" }, -#define X_PANICSTR 5 +#define X_PANICSTR 4 { "_panicstr" }, -#define X_DUMPMAG 6 +#define X_DUMPMAG 5 { "_dumpmag" }, { "" }, }; -int cursyms[] = { X_DUMPDEV, X_DUMPLO, X_VERSION, X_DUMPMAG, -1 }; +int cursyms[] = { X_DUMPLO, X_VERSION, X_DUMPMAG, -1 }; int dumpsyms[] = { X_TIME, X_DUMPSIZE, X_VERSION, X_PANICSTR, X_DUMPMAG, -1 }; struct nlist dump_nl[] = { /* Name list for dumped system. */ - { "_dumpdev" }, /* Entries MUST be the same as */ - { "_dumplo" }, /* those in current_nl[]. */ - { "_time_second" }, + { "_dumplo" }, /* Entries MUST be the same as */ + { "_time_second" }, /* those in current_nl[]. */ { "_dumpsize" }, { "_version" }, { "_panicstr" }, @@ -216,6 +214,8 @@ kmem_setup() FILE *fp; int kmem, i; const char *dump_sys; + int mib[2]; + size_t len; /* * Some names we need for the currently running system, others for @@ -245,13 +245,19 @@ kmem_setup() exit(1); } - kmem = Open(_PATH_KMEM, O_RDONLY); - Lseek(kmem, (off_t)current_nl[X_DUMPDEV].n_value, L_SET); - (void)Read(kmem, &dumpdev, sizeof(dumpdev)); + mib[0] = CTL_KERN; + mib[1] = KERN_DUMPDEV; + len = sizeof dumpdev; + if (sysctl(mib, 2, &dumpdev, &len, NULL, 0) == -1) { + syslog(LOG_ERR, "sysctl: kern.dumpdev: %m"); + exit(1); + } if (dumpdev == NODEV) { syslog(LOG_WARNING, "no core dump (no dumpdev)"); exit(1); } + + kmem = Open(_PATH_KMEM, O_RDONLY); Lseek(kmem, (off_t)current_nl[X_DUMPLO].n_value, L_SET); (void)Read(kmem, &dumplo, sizeof(dumplo)); if (verbose) |
