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kdump: Add support for decoding inotify events

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These are emitted when reading from an inotify descriptor.

MFC after:	3 months
Sponsored by:	Klara, Inc.
This commit is contained in:
Mark Johnston 2025-07-03 19:53:30 +00:00
parent 4d08e7815d
commit e02d4fab54
1 changed files with 21 additions and 0 deletions
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21
usr.bin/kdump/kdump.c
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@ -46,6 +46,7 @@
#include <sys/ktrace.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/inotify.h>
#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/stat.h>
@ -105,6 +106,7 @@ static void ktrcsw(struct ktr_csw *);
static void ktrcsw_old(struct ktr_csw_old *);
static void ktruser(int, void *);
static void ktrcaprights(cap_rights_t *);
static void ktrinotify(struct inotify_event *);
static void ktritimerval(struct itimerval *it);
static void ktrsockaddr(struct sockaddr *);
static void ktrsplice(struct splice *);
@ -1860,6 +1862,14 @@ ktrtimeval(struct timeval *tv)
printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
}
static void
ktrinotify(struct inotify_event *ev)
{
printf(
"inotify { .wd = %d, .mask = %#x, .cookie = %u, .len = %u, .name = %s }\n",
ev->wd, ev->mask, ev->cookie, ev->len, ev->name);
}
static void
ktritimerval(struct itimerval *it)
{
@ -2128,6 +2138,17 @@ ktrstruct(char *buf, size_t buflen)
goto invalid;
memcpy(&rights, data, datalen);
ktrcaprights(&rights);
} else if (strcmp(name, "inotify") == 0) {
struct inotify_event *ev;
if (datalen < sizeof(struct inotify_event) ||
datalen > sizeof(struct inotify_event) + NAME_MAX + 1)
goto invalid;
ev = malloc(datalen);
if (ev == NULL)
err(1, "malloc");
memcpy(ev, data, datalen);
ktrinotify(ev);
} else if (strcmp(name, "itimerval") == 0) {
if (datalen != sizeof(struct itimerval))
goto invalid;