svn commit: r247493 - in user/dchagin/lemul/sys: amd64/linux32 compat/linux i386/linux
Dmitry Chagin
dchagin at FreeBSD.org
Thu Feb 28 19:35:06 UTC 2013
Author: dchagin
Date: Thu Feb 28 19:35:04 2013
New Revision: 247493
URL: http://svnweb.freebsd.org/changeset/base/247493
Log:
Implement pselect6() system call.
Modified:
user/dchagin/lemul/sys/amd64/linux32/linux32_dummy.c
user/dchagin/lemul/sys/amd64/linux32/syscalls.master
user/dchagin/lemul/sys/compat/linux/linux_misc.c
user/dchagin/lemul/sys/i386/linux/linux_dummy.c
user/dchagin/lemul/sys/i386/linux/syscalls.master
Modified: user/dchagin/lemul/sys/amd64/linux32/linux32_dummy.c
==============================================================================
--- user/dchagin/lemul/sys/amd64/linux32/linux32_dummy.c Thu Feb 28 19:01:04 2013 (r247492)
+++ user/dchagin/lemul/sys/amd64/linux32/linux32_dummy.c Thu Feb 28 19:35:04 2013 (r247493)
@@ -101,7 +101,6 @@ DUMMY(inotify_add_watch);
DUMMY(inotify_rm_watch);
/* linux 2.6.16: */
DUMMY(migrate_pages);
-DUMMY(pselect6);
DUMMY(ppoll);
DUMMY(unshare);
/* linux 2.6.17: */
Modified: user/dchagin/lemul/sys/amd64/linux32/syscalls.master
==============================================================================
--- user/dchagin/lemul/sys/amd64/linux32/syscalls.master Thu Feb 28 19:01:04 2013 (r247492)
+++ user/dchagin/lemul/sys/amd64/linux32/syscalls.master Thu Feb 28 19:35:04 2013 (r247493)
@@ -505,7 +505,10 @@
306 AUE_FCHMODAT STD { int linux_fchmodat(l_int dfd, const char *filename, \
l_mode_t mode); }
307 AUE_FACCESSAT STD { int linux_faccessat(l_int dfd, const char *filename, l_int amode, int flag); }
-308 AUE_NULL STD { int linux_pselect6(void); }
+308 AUE_SELECT STD { int linux_pselect6(l_int nfds, \
+ l_fd_set *readfds, l_fd_set *writefds, \
+ l_fd_set *exceptfds, \
+ struct l_timespec *tsp, l_uintptr_t *sig); }
309 AUE_NULL STD { int linux_ppoll(void); }
310 AUE_NULL STD { int linux_unshare(void); }
; linux 2.6.17:
Modified: user/dchagin/lemul/sys/compat/linux/linux_misc.c
==============================================================================
--- user/dchagin/lemul/sys/compat/linux/linux_misc.c Thu Feb 28 19:01:04 2013 (r247492)
+++ user/dchagin/lemul/sys/compat/linux/linux_misc.c Thu Feb 28 19:35:04 2013 (r247493)
@@ -116,6 +116,12 @@ struct l_sysinfo {
l_uint mem_unit;
char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */
};
+
+struct l_pselect6arg {
+ l_sigset_t *ss;
+ l_size_t ss_len;
+};
+
int
linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
{
@@ -2070,3 +2076,78 @@ out:
PRELE(p);
return (error);
}
+
+int
+linux_pselect6(struct thread *td, struct linux_pselect6_args *args)
+{
+ struct timeval utv, tv0, tv1, *tvp;
+ struct l_pselect6arg lpse6;
+ struct l_timespec lts;
+ struct timespec uts;
+ l_sigset_t l_ss;
+ sigset_t *ssp;
+ sigset_t ss;
+ int error;
+
+ if (args->sig) {
+ error = copyin(args->sig, &lpse6, sizeof(lpse6));
+ if (error)
+ return (error);
+ if (lpse6.ss_len != sizeof(l_ss))
+ return (EINVAL);
+ error = copyin(lpse6.ss, &l_ss, sizeof(l_ss));
+ if (error)
+ return (error);
+ linux_to_bsd_sigset(&l_ss, &ss);
+ ssp = &ss;
+ } else
+ ssp = NULL;
+
+ /*
+ * Currently glibc changes nanosecond number to microsecond.
+ * This mean losing precision but for now it is hardly seen.
+ */
+ if (args->tsp) {
+ error = copyin(args->tsp, <s, sizeof(lts));
+ if (error)
+ return (error);
+ uts.tv_sec = lts.tv_sec;
+ uts.tv_nsec = lts.tv_nsec;
+
+ TIMESPEC_TO_TIMEVAL(&utv, &uts);
+ if (itimerfix(&utv))
+ return (EINVAL);
+
+ microtime(&tv0);
+ tvp = &utv;
+ } else
+ tvp = NULL;
+
+ error = kern_pselect(td, args->nfds, args->readfds, args->writefds,
+ args->exceptfds, tvp, ssp, sizeof(l_int) * 8);
+
+ if (error == 0 && args->tsp) {
+ if (td->td_retval[0]) {
+ /*
+ * Compute how much time was left of the timeout,
+ * by subtracting the current time and the time
+ * before we started the call, and subtracting
+ * that result from the user-supplied value.
+ */
+
+ microtime(&tv1);
+ timevalsub(&tv1, &tv0);
+ timevalsub(&utv, &tv1);
+ if (utv.tv_sec < 0)
+ timevalclear(&utv);
+ } else
+ timevalclear(&utv);
+
+ TIMEVAL_TO_TIMESPEC(&utv, &uts);
+ lts.tv_sec = uts.tv_sec;
+ lts.tv_nsec = uts.tv_nsec;
+ error = copyout(<s, args->tsp, sizeof(lts));
+ }
+
+ return (error);
+}
Modified: user/dchagin/lemul/sys/i386/linux/linux_dummy.c
==============================================================================
--- user/dchagin/lemul/sys/i386/linux/linux_dummy.c Thu Feb 28 19:01:04 2013 (r247492)
+++ user/dchagin/lemul/sys/i386/linux/linux_dummy.c Thu Feb 28 19:35:04 2013 (r247493)
@@ -92,7 +92,6 @@ DUMMY(inotify_add_watch);
DUMMY(inotify_rm_watch);
/* linux 2.6.16: */
DUMMY(migrate_pages);
-DUMMY(pselect6);
DUMMY(ppoll);
DUMMY(unshare);
/* linux 2.6.17: */
Modified: user/dchagin/lemul/sys/i386/linux/syscalls.master
==============================================================================
--- user/dchagin/lemul/sys/i386/linux/syscalls.master Thu Feb 28 19:01:04 2013 (r247492)
+++ user/dchagin/lemul/sys/i386/linux/syscalls.master Thu Feb 28 19:35:04 2013 (r247493)
@@ -515,7 +515,10 @@
306 AUE_FCHMODAT STD { int linux_fchmodat(l_int dfd, const char *filename, \
l_mode_t mode); }
307 AUE_FACCESSAT STD { int linux_faccessat(l_int dfd, const char *filename, l_int amode, l_int flag); }
-308 AUE_NULL STD { int linux_pselect6(void); }
+308 AUE_SELECT STD { int linux_pselect6(l_int nfds, \
+ l_fd_set *readfds, l_fd_set *writefds, \
+ l_fd_set *exceptfds, \
+ struct l_timespec *tsp, l_uintptr_t *sig); }
309 AUE_NULL STD { int linux_ppoll(void); }
310 AUE_NULL STD { int linux_unshare(void); }
; linux 2.6.17:
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