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With rotating kernel dumps the higest dump number is not necessarily the

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last one. To make it easier to find the last one create symlinks with 'last'
suffix that will point to the files of the last coredump, eg.:

	info.last -> info.5
	textdump.tar.last.gz -> textdump.tar.5.gz

Reviewed by:	avg
Obtained from:	WHEEL Systems
This commit is contained in:
Pawel Jakub Dawidek 2012-12-16 23:09:27 +00:00
parent eeff0b1b27
commit 165557e269
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=244321
1 changed files with 29 additions and 1 deletions
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30
sbin/savecore/savecore.c
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@ -229,6 +229,17 @@ saved_dump_remove(int bounds)
(void)unlink(path);
}
static void
symlinks_remove(void)
{
(void)unlink("info.last");
(void)unlink("vmcore.last");
(void)unlink("vmcore.last.gz");
(void)unlink("textdump.tar.last");
(void)unlink("textdump.tar.last.gz");
}
/*
* Check that sufficient space is available on the disk that holds the
* save directory.
@ -419,7 +430,7 @@ DoTextdumpFile(int fd, off_t dumpsize, off_t lasthd, char *buf,
static void
DoFile(const char *savedir, const char *device)
{
static char infoname[PATH_MAX], corename[PATH_MAX];
static char infoname[PATH_MAX], corename[PATH_MAX], linkname[PATH_MAX];
static char *buf = NULL;
struct kerneldumpheader kdhf, kdhl;
off_t mediasize, dumpsize, firsthd, lasthd;
@ -664,6 +675,23 @@ DoFile(const char *savedir, const char *device)
goto closeall;
}
symlinks_remove();
if (symlink(infoname, "info.last") == -1) {
syslog(LOG_WARNING, "unable to create symlink %s/%s: %m",
savedir, "info.last");
}
if (compress) {
snprintf(linkname, sizeof(linkname), "%s.last.gz",
istextdump ? "textdump.tar" : "vmcore");
} else {
snprintf(linkname, sizeof(linkname), "%s.last",
istextdump ? "textdump.tar" : "vmcore");
}
if (symlink(corename, linkname) == -1) {
syslog(LOG_WARNING, "unable to create symlink %s/%s: %m",
savedir, linkname);
}
nsaved++;
if (verbose)