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linux(4): Trace Linux l_sigset_t.

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MFC after:		2 weeks
This commit is contained in:
Dmitry Chagin 2022-06-22 14:09:54 +03:00
parent 8a0f6d8cfd
commit 9310737333
5 changed files with 68 additions and 14 deletions
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5
sys/compat/linux/linux.h
View File

@ -266,4 +266,9 @@ struct l_statx {
#define lower_32_bits(n) ((uint32_t)((n) & 0xffffffff))
#ifdef KTRACE
#define linux_ktrsigset(s, l) \
ktrstruct("l_sigset_t", (s), l)
#endif
#endif /* _LINUX_MI_H_ */

6
sys/compat/linux/linux_event.c
View File

@ -526,7 +526,7 @@ linux_epoll_pwait(struct thread *td, struct linux_epoll_pwait_args *args)
sigset_t mask, *pmask;
int error;
error = linux_copyin_sigset(args->mask, sizeof(l_sigset_t),
error = linux_copyin_sigset(td, args->mask, sizeof(l_sigset_t),
&mask, &pmask);
if (error != 0)
return (error);
@ -543,7 +543,7 @@ linux_epoll_pwait2_64(struct thread *td, struct linux_epoll_pwait2_64_args *args
sigset_t mask, *pmask;
int error;
error = linux_copyin_sigset(args->mask, sizeof(l_sigset_t),
error = linux_copyin_sigset(td, args->mask, sizeof(l_sigset_t),
&mask, &pmask);
if (error != 0)
return (error);
@ -567,7 +567,7 @@ linux_epoll_pwait2(struct thread *td, struct linux_epoll_pwait2_args *args)
sigset_t mask, *pmask;
int error;
error = linux_copyin_sigset(args->mask, sizeof(l_sigset_t),
error = linux_copyin_sigset(td, args->mask, sizeof(l_sigset_t),
&mask, &pmask);
if (error != 0)
return (error);

4
sys/compat/linux/linux_misc.c
View File

@ -2429,7 +2429,7 @@ linux_common_pselect6(struct thread *td, l_int nfds, l_fd_set *readfds,
error = copyin(sig, &lpse6, sizeof(lpse6));
if (error != 0)
return (error);
error = linux_copyin_sigset(PTRIN(lpse6.ss),
error = linux_copyin_sigset(td, PTRIN(lpse6.ss),
lpse6.ss_len, &ss, &ssp);
if (error != 0)
return (error);
@ -2530,7 +2530,7 @@ linux_common_ppoll(struct thread *td, struct pollfd *fds, uint32_t nfds,
if (kern_poll_maxfds(nfds))
return (EINVAL);
if (sset != NULL) {
error = linux_copyin_sigset(sset, ssize, &ss, &ssp);
error = linux_copyin_sigset(td, sset, ssize, &ss, &ssp);
if (error != 0)
return (error);
} else

64
sys/compat/linux/linux_signal.c
View File

@ -29,6 +29,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ktr.h>
@ -39,6 +41,9 @@ __FBSDID("$FreeBSD$");
#include <sys/signalvar.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#ifdef KTRACE
#include <sys/ktrace.h>
#endif
#include <security/audit/audit.h>
@ -176,6 +181,11 @@ linux_do_sigaction(struct thread *td, int linux_sig, l_sigaction_t *linux_nsa,
if (linux_nsa != NULL) {
nsa = &act;
linux_to_bsd_sigaction(linux_nsa, nsa);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&linux_nsa->lsa_mask,
sizeof(linux_nsa->lsa_mask));
#endif
} else
nsa = NULL;
sig = linux_to_bsd_signal(linux_sig);
@ -184,9 +194,14 @@ linux_do_sigaction(struct thread *td, int linux_sig, l_sigaction_t *linux_nsa,
if (error != 0)
return (error);
if (linux_osa != NULL)
if (linux_osa != NULL) {
bsd_to_linux_sigaction(osa, linux_osa);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&linux_osa->lsa_mask,
sizeof(linux_osa->lsa_mask));
#endif
}
return (0);
}
@ -308,6 +323,10 @@ linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args)
return (error);
LINUX_SIGEMPTYSET(lset);
lset.__mask = mask;
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&lset, sizeof(lset));
#endif
linux_to_bsd_sigset(&lset, &set);
}
@ -316,6 +335,10 @@ linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args)
args->omask ? &oset : NULL);
if (args->omask != NULL && error == 0) {
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&oset, sizeof(oset));
#endif
mask = oset.__mask;
error = copyout(&mask, args->omask, sizeof(mask));
}
@ -331,7 +354,7 @@ linux_rt_sigprocmask(struct thread *td, struct linux_rt_sigprocmask_args *args)
sigset_t set, *pset;
int error;
error = linux_copyin_sigset(args->mask, args->sigsetsize,
error = linux_copyin_sigset(td, args->mask, args->sigsetsize,
&set, &pset);
if (error != 0)
return (EINVAL);
@ -339,8 +362,13 @@ linux_rt_sigprocmask(struct thread *td, struct linux_rt_sigprocmask_args *args)
error = linux_do_sigprocmask(td, args->how, pset,
args->omask ? &oset : NULL);
if (args->omask != NULL && error == 0)
if (args->omask != NULL && error == 0) {
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&oset, sizeof(oset));
#endif
error = copyout(&oset, args->omask, sizeof(oset));
}
return (error);
}
@ -356,6 +384,10 @@ linux_sgetmask(struct thread *td, struct linux_sgetmask_args *args)
bsd_to_linux_sigset(&td->td_sigmask, &mask);
PROC_UNLOCK(p);
td->td_retval[0] = mask.__mask;
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&mask, sizeof(mask));
#endif
return (0);
}
@ -372,6 +404,10 @@ linux_ssetmask(struct thread *td, struct linux_ssetmask_args *args)
LINUX_SIGEMPTYSET(lset);
lset.__mask = args->mask;
linux_to_bsd_sigset(&lset, &bset);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&lset, sizeof(lset));
#endif
td->td_sigmask = bset;
SIG_CANTMASK(td->td_sigmask);
signotify(td);
@ -393,6 +429,10 @@ linux_sigpending(struct thread *td, struct linux_sigpending_args *args)
SIGSETAND(bset, td->td_sigmask);
PROC_UNLOCK(p);
bsd_to_linux_sigset(&bset, &lset);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&lset, sizeof(lset));
#endif
mask = lset.__mask;
return (copyout(&mask, args->mask, sizeof(mask)));
}
@ -418,6 +458,10 @@ linux_rt_sigpending(struct thread *td, struct linux_rt_sigpending_args *args)
SIGSETAND(bset, td->td_sigmask);
PROC_UNLOCK(p);
bsd_to_linux_sigset(&bset, &lset);
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&lset, sizeof(lset));
#endif
return (copyout(&lset, args->set, args->sigsetsize));
}
@ -449,7 +493,7 @@ linux_common_rt_sigtimedwait(struct thread *td, l_sigset_t *mask,
l_siginfo_t lsi;
ksiginfo_t ksi;
error = linux_copyin_sigset(mask, sigsetsize, &bset, NULL);
error = linux_copyin_sigset(td, mask, sigsetsize, &bset, NULL);
if (error != 0)
return (error);
@ -825,7 +869,7 @@ linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap)
sigset_t sigmask;
int error;
error = linux_copyin_sigset(uap->newset, uap->sigsetsize,
error = linux_copyin_sigset(td, uap->newset, uap->sigsetsize,
&sigmask, NULL);
if (error != 0)
return (error);
@ -915,8 +959,8 @@ linux_psignal(struct thread *td, int pid, int sig)
}
int
linux_copyin_sigset(l_sigset_t *lset, l_size_t sigsetsize, sigset_t *set,
sigset_t **pset)
linux_copyin_sigset(struct thread *td, l_sigset_t *lset,
l_size_t sigsetsize, sigset_t *set, sigset_t **pset)
{
l_sigset_t lmask;
int error;
@ -930,6 +974,10 @@ linux_copyin_sigset(l_sigset_t *lset, l_size_t sigsetsize, sigset_t *set,
linux_to_bsd_sigset(&lmask, set);
if (pset != NULL)
*pset = set;
#ifdef KTRACE
if (KTRPOINT(td, KTR_STRUCT))
linux_ktrsigset(&lmask, sizeof(lmask));
#endif
} else if (pset != NULL)
*pset = NULL;
return (0);

3
sys/compat/linux/linux_signal.h
View File

@ -35,6 +35,7 @@ int linux_do_sigaction(struct thread *, int, l_sigaction_t *, l_sigaction_t *);
void siginfo_to_lsiginfo(const siginfo_t *si, l_siginfo_t *lsi, l_int sig);
int lsiginfo_to_siginfo(struct thread *td, const l_siginfo_t *lsi,
siginfo_t *si, int sig);
int linux_copyin_sigset(l_sigset_t *, l_size_t, sigset_t *, sigset_t **);
int linux_copyin_sigset(struct thread *td, l_sigset_t *, l_size_t, sigset_t *,
sigset_t **);
#endif /* _LINUX_SIGNAL_H_ */