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Trace timeval parameters to the getitimer(2) and setitimer(2) syscalls.

Browse Source 
Reviewed by:	jhb
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D7158
This commit is contained in:
Konstantin Belousov 2016-07-13 14:37:58 +00:00
parent 1d148a7c3f
commit de56aee0bf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=302770
3 changed files with 44 additions and 0 deletions
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17
sys/kern/kern_time.c
View File

@ -32,6 +32,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/limits.h>
@ -54,6 +56,9 @@ __FBSDID("$FreeBSD$");
#include <sys/timers.h>
#include <sys/timetc.h>
#include <sys/vnode.h>
#ifdef KTRACE
#include <sys/ktrace.h>
#endif
#include <vm/vm.h>
#include <vm/vm_extern.h>
@ -701,6 +706,10 @@ kern_getitimer(struct thread *td, u_int which, struct itimerval *aitv)
*aitv = p->p_stats->p_timer[which];
PROC_ITIMUNLOCK(p);
}
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
ktritimerval(aitv);
#endif
return (0);
}
@ -742,6 +751,10 @@ kern_setitimer(struct thread *td, u_int which, struct itimerval *aitv,
if (which > ITIMER_PROF)
return (EINVAL);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
ktritimerval(aitv);
#endif
if (itimerfix(&aitv->it_value) ||
aitv->it_value.tv_sec > INT32_MAX / 2)
return (EINVAL);
@ -786,6 +799,10 @@ kern_setitimer(struct thread *td, u_int which, struct itimerval *aitv,
p->p_stats->p_timer[which] = *aitv;
PROC_ITIMUNLOCK(p);
}
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
ktritimerval(oitv);
#endif
return (0);
}

2
sys/sys/ktrace.h
View File

@ -270,6 +270,8 @@ void ktrcapfail(enum ktr_cap_fail_type, const cap_rights_t *,
const cap_rights_t *);
#define ktrcaprights(s) \
ktrstruct("caprights", (s), sizeof(cap_rights_t))
#define ktritimerval(s) \
ktrstruct("itimerval", (s), sizeof(struct itimerval))
#define ktrsockaddr(s) \
ktrstruct("sockaddr", (s), ((struct sockaddr *)(s))->sa_len)
#define ktrstat(s) \

25
usr.bin/kdump/kdump.c
View File

@ -109,6 +109,7 @@ void ktruser_malloc(void *);
void ktruser_rtld(int, void *);
void ktruser(int, void *);
void ktrcaprights(cap_rights_t *);
void ktritimerval(struct itimerval *it);
void ktrsockaddr(struct sockaddr *);
void ktrstat(struct stat *);
void ktrstruct(char *, size_t);
@ -1562,6 +1563,24 @@ ktrcaprights(cap_rights_t *rightsp)
printf("\n");
}
static void
ktrtimeval(struct timeval *tv)
{
printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
}
void
ktritimerval(struct itimerval *it)
{
printf("itimerval { .interval = ");
ktrtimeval(&it->it_interval);
printf(", .value = ");
ktrtimeval(&it->it_value);
printf(" }\n");
}
void
ktrsockaddr(struct sockaddr *sa)
{
@ -1737,6 +1756,7 @@ ktrstruct(char *buf, size_t buflen)
size_t namelen, datalen;
int i;
cap_rights_t rights;
struct itimerval it;
struct stat sb;
struct sockaddr_storage ss;
@ -1761,6 +1781,11 @@ ktrstruct(char *buf, size_t buflen)
goto invalid;
memcpy(&rights, data, datalen);
ktrcaprights(&rights);
} else if (strcmp(name, "itimerval") == 0) {
if (datalen != sizeof(struct itimerval))
goto invalid;
memcpy(&it, data, datalen);
ktritimerval(&it);
} else if (strcmp(name, "stat") == 0) {
if (datalen != sizeof(struct stat))
goto invalid;