aboutsummaryrefslogtreecommitdiff
path: root/sys
diff options
context:
space:
mode:
Diffstat (limited to 'sys')
-rw-r--r--sys/amd64/linux32/linux.h105
-rw-r--r--sys/amd64/linux32/linux32_dummy.c6
-rw-r--r--sys/amd64/linux32/linux32_machdep.c18
-rw-r--r--sys/amd64/linux32/linux32_sysvec.c2
-rw-r--r--sys/compat/linux/linux_misc.c98
-rw-r--r--sys/compat/linux/linux_signal.c58
-rw-r--r--sys/compat/linux/linux_util.c9
-rw-r--r--sys/conf/files.amd643
-rw-r--r--sys/conf/files.i3863
-rw-r--r--sys/i386/linux/linux.h99
-rw-r--r--sys/i386/linux/linux_dummy.c19
-rw-r--r--sys/i386/linux/linux_machdep.c381
-rw-r--r--sys/i386/linux/linux_sysvec.c33
13 files changed, 768 insertions, 66 deletions
diff --git a/sys/amd64/linux32/linux.h b/sys/amd64/linux32/linux.h
index c5715974a01d..138871f35889 100644
--- a/sys/amd64/linux32/linux.h
+++ b/sys/amd64/linux32/linux.h
@@ -34,6 +34,10 @@
#define _AMD64_LINUX_LINUX_H_
#include <sys/signal.h> /* for sigval union */
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/sx.h>
#include <amd64/linux32/linux32_syscall.h>
@@ -495,6 +499,7 @@ struct l_rt_sigframe {
extern int bsd_to_linux_signal[];
extern int linux_to_bsd_signal[];
+extern struct sysentvec elf_linux_sysvec;
/*
* Pluggable ioctl handlers
@@ -527,6 +532,11 @@ int linux_ioctl_unregister_handler(struct linux_ioctl_handler *h);
#define LINUX_O_NDELAY LINUX_O_NONBLOCK
#define LINUX_O_SYNC 010000
#define LINUX_FASYNC 020000
+#define LINUX_O_DIRECT 040000 /* direct disk access hint */
+#define LINUX_O_LARGEFILE 0100000
+#define LINUX_O_DIRECTORY 0200000 /* must be a directory */
+#define LINUX_O_NOFOLLOW 0400000 /* don't follow links */
+#define LINUX_O_NOATIME 01000000
#define LINUX_F_DUPFD 0
#define LINUX_F_GETFD 1
@@ -737,4 +747,99 @@ struct l_pollfd {
l_short revents;
} __packed;
+struct l_user_desc {
+ l_uint entry_number;
+ l_uint base_addr;
+ l_uint limit;
+ l_uint seg_32bit:1;
+ l_uint contents:2;
+ l_uint read_exec_only:1;
+ l_uint limit_in_pages:1;
+ l_uint seg_not_present:1;
+ l_uint useable:1;
+};
+
+struct l_desc_struct {
+ unsigned long a,b;
+};
+
+
+#define LINUX_LOWERWORD 0x0000ffff
+
+/* macros which does the same thing as those in linux include/asm-um/ldt-i386.h
+ * these convert linux user-space descriptor to machine one
+ */
+#define LDT_entry_a(info) \
+ ((((info)->base_addr & LINUX_LOWERWORD) << 16) | ((info)->limit & LINUX_LOWERWORD))
+
+#define ENTRY_B_READ_EXEC_ONLY 9
+#define ENTRY_B_CONTENTS 10
+#define ENTRY_B_SEG_NOT_PRESENT 15
+#define ENTRY_B_BASE_ADDR 16
+#define ENTRY_B_USEABLE 20
+#define ENTRY_B_SEG32BIT 22
+#define ENTRY_B_LIMIT 23
+
+#define LDT_entry_b(info) \
+ (((info)->base_addr & 0xff000000) | \
+ ((info)->limit & 0xf0000) | \
+ ((info)->contents << ENTRY_B_CONTENTS) | \
+ (((info)->seg_not_present == 0) << ENTRY_B_SEG_NOT_PRESENT) | \
+ (((info)->base_addr & 0x00ff0000) >> ENTRY_B_BASE_ADDR) | \
+ (((info)->read_exec_only == 0) << ENTRY_B_READ_EXEC_ONLY) | \
+ ((info)->seg_32bit << ENTRY_B_SEG32BIT) | \
+ ((info)->useable << ENTRY_B_USEABLE) | \
+ ((info)->limit_in_pages << ENTRY_B_LIMIT) | 0x7000)
+
+#define LDT_empty(info) (\
+ (info)->base_addr == 0 && \
+ (info)->limit == 0 && \
+ (info)->contents == 0 && \
+ (info)->seg_not_present == 1 && \
+ (info)->read_exec_only == 1 && \
+ (info)->seg_32bit == 0 && \
+ (info)->limit_in_pages == 0 && \
+ (info)->useable == 0 )
+
+/* macros for converting segments, they do the same as those in arch/i386/kernel/process.c */
+#define GET_BASE(desc) ( \
+ (((desc)->a >> 16) & LINUX_LOWERWORD) | \
+ (((desc)->b << 16) & 0x00ff0000) | \
+ ( (desc)->b & 0xff000000) )
+
+#define GET_LIMIT(desc) ( \
+ ((desc)->a & LINUX_LOWERWORD) | \
+ ((desc)->b & 0xf0000) )
+
+#define GET_32BIT(desc) (((desc)->b >> ENTRY_B_SEG32BIT) & 1)
+#define GET_CONTENTS(desc) (((desc)->b >> ENTRY_B_CONTENTS) & 3)
+#define GET_WRITABLE(desc) (((desc)->b >> ENTRY_B_READ_EXEC_ONLY) & 1)
+#define GET_LIMIT_PAGES(desc) (((desc)->b >> ENTRY_B_LIMIT) & 1)
+#define GET_PRESENT(desc) (((desc)->b >> ENTRY_B_SEG_NOT_PRESENT) & 1)
+#define GET_USEABLE(desc) (((desc)->b >> ENTRY_B_USEABLE) & 1)
+
+#define LINUX_CLOCK_REALTIME 0
+#define LINUX_CLOCK_MONOTONIC 1
+#define LINUX_CLOCK_PROCESS_CPUTIME_ID 2
+#define LINUX_CLOCK_THREAD_CPUTIME_ID 3
+#define LINUX_CLOCK_REALTIME_HR 4
+#define LINUX_CLOCK_MONOTONIC_HR 5
+
+typedef int l_timer_t;
+typedef int l_mqd_t;
+
+#define CLONE_VM 0x100
+#define CLONE_FS 0x200
+#define CLONE_FILES 0x400
+#define CLONE_SIGHAND 0x800
+#define CLONE_PID 0x1000 /* this flag does not exist in linux anymore */
+#define CLONE_PARENT 0x00008000
+#define CLONE_THREAD 0x10000
+#define CLONE_SETTLS 0x80000
+#define CLONE_CHILD_CLEARTID 0x00200000
+#define CLONE_CHILD_SETTID 0x01000000
+#define CLONE_PARENT_SETTID 0x00100000
+
+#define THREADING_FLAGS (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
+
#endif /* !_AMD64_LINUX_LINUX_H_ */
diff --git a/sys/amd64/linux32/linux32_dummy.c b/sys/amd64/linux32/linux32_dummy.c
index 33d81990af55..81be23fc6042 100644
--- a/sys/amd64/linux32/linux32_dummy.c
+++ b/sys/amd64/linux32/linux32_dummy.c
@@ -72,19 +72,13 @@ DUMMY(epoll_create);
DUMMY(epoll_ctl);
DUMMY(epoll_wait);
DUMMY(remap_file_pages);
-DUMMY(set_tid_address);
DUMMY(timer_create);
DUMMY(timer_settime);
DUMMY(timer_gettime);
DUMMY(timer_getoverrun);
DUMMY(timer_delete);
-DUMMY(clock_settime);
-DUMMY(clock_gettime);
-DUMMY(clock_getres);
-DUMMY(clock_nanosleep);
DUMMY(statfs64);
DUMMY(fstatfs64);
-DUMMY(tgkill);
DUMMY(utimes);
DUMMY(fadvise64_64);
DUMMY(mbind);
diff --git a/sys/amd64/linux32/linux32_machdep.c b/sys/amd64/linux32/linux32_machdep.c
index 83ebf53aafad..dd795a4acacb 100644
--- a/sys/amd64/linux32/linux32_machdep.c
+++ b/sys/amd64/linux32/linux32_machdep.c
@@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/imgact.h>
+#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mman.h>
@@ -472,12 +473,6 @@ linux_vfork(struct thread *td, struct linux_vfork_args *args)
return (0);
}
-#define CLONE_VM 0x100
-#define CLONE_FS 0x200
-#define CLONE_FILES 0x400
-#define CLONE_SIGHAND 0x800
-#define CLONE_PID 0x1000
-
int
linux_clone(struct thread *td, struct linux_clone_args *args)
{
@@ -491,14 +486,9 @@ linux_clone(struct thread *td, struct linux_clone_args *args)
printf(ARGS(clone, "flags %x, stack %x"),
(unsigned int)(uintptr_t)args->flags,
(unsigned int)(uintptr_t)args->stack);
- if (args->flags & CLONE_PID)
- printf(LMSG("CLONE_PID not yet supported"));
}
#endif
- if (!args->stack)
- return (EINVAL);
-
exit_signal = args->flags & 0x000000ff;
if (exit_signal >= LINUX_NSIG)
return (EINVAL);
@@ -522,7 +512,11 @@ linux_clone(struct thread *td, struct linux_clone_args *args)
p2->p_sigparent = exit_signal;
PROC_UNLOCK(p2);
td2 = FIRST_THREAD_IN_PROC(p2);
- td2->td_frame->tf_rsp = PTROUT(args->stack);
+ /* in a case of stack = NULL we are supposed to COW calling process stack
+ * this is what normal fork() does so we just keep the tf_rsp arg intact
+ */
+ if (args->stack)
+ td2->td_frame->tf_rsp = PTROUT(args->stack);
#ifdef DEBUG
if (ldebug(clone))
diff --git a/sys/amd64/linux32/linux32_sysvec.c b/sys/amd64/linux32/linux32_sysvec.c
index 123c3f6522ff..4e5da2eacb81 100644
--- a/sys/amd64/linux32/linux32_sysvec.c
+++ b/sys/amd64/linux32/linux32_sysvec.c
@@ -993,7 +993,7 @@ linux32_fixlimits(struct proc *p)
struct sysentvec elf_linux_sysvec = {
LINUX_SYS_MAXSYSCALL,
linux_sysent,
- 0xff,
+ 0,
LINUX_SIGTBLSZ,
bsd_to_linux_signal,
ELAST + 1,
diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index e85fec31ab35..848c11493046 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -74,6 +74,7 @@ __FBSDID("$FreeBSD$");
#include <posix4/sched.h>
#include <compat/linux/linux_sysproto.h>
+#include <compat/linux/linux_emul.h>
#ifdef COMPAT_LINUX32
#include <machine/../linux32/linux.h>
@@ -93,6 +94,9 @@ __FBSDID("$FreeBSD$");
#define BSD_TO_LINUX_SIGNAL(sig) \
(((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig)
+extern struct sx emul_shared_lock;
+extern struct sx emul_lock;
+
static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
@@ -1330,11 +1334,69 @@ linux_reboot(struct thread *td, struct linux_reboot_args *args)
int
linux_getpid(struct thread *td, struct linux_getpid_args *args)
{
+ struct linux_emuldata *em;
+
+ em = em_find(td->td_proc, EMUL_UNLOCKED);
+
+ KASSERT(em != NULL, ("getpid: emuldata not found.\n"));
+
+ td->td_retval[0] = em->shared->group_pid;
+ EMUL_UNLOCK(&emul_lock);
+ return (0);
+}
+
+int
+linux_gettid(struct thread *td, struct linux_gettid_args *args)
+{
+#ifdef DEBUG
+ if (ldebug(gettid))
+ printf(ARGS(gettid, ""));
+#endif
td->td_retval[0] = td->td_proc->p_pid;
return (0);
}
+
+int
+linux_getppid(struct thread *td, struct linux_getppid_args *args)
+{
+ struct linux_emuldata *em;
+ struct proc *p, *pp;
+
+ em = em_find(td->td_proc, EMUL_UNLOCKED);
+
+ KASSERT(em != NULL, ("getppid: process emuldata not found.\n"));
+
+ /* find the group leader */
+ p = pfind(em->shared->group_pid);
+
+ if (p == NULL) {
+#ifdef DEBUG
+ printf(LMSG("parent process not found.\n"));
+#endif
+ return (0);
+ }
+
+ pp = p->p_pptr; /* switch to parent */
+ PROC_LOCK(pp);
+ PROC_UNLOCK(p);
+
+ /* if its also linux process */
+ if (pp->p_sysent == &elf_linux_sysvec) {
+ em = em_find(pp, EMUL_LOCKED);
+ KASSERT(em != NULL, ("getppid: parent emuldata not found.\n"));
+
+ td->td_retval[0] = em->shared->group_pid;
+ } else
+ td->td_retval[0] = pp->p_pid;
+
+ EMUL_UNLOCK(&emul_lock);
+ PROC_UNLOCK(pp);
+
+ return (0);
+}
+
int
linux_getgid(struct thread *td, struct linux_getgid_args *args)
{
@@ -1394,3 +1456,39 @@ linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
args->len, 0, 0));
}
+int
+linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
+{
+ struct linux_emuldata *em, *td_em, *tmp_em;
+ struct proc *sp;
+
+#ifdef DEBUG
+ if (ldebug(exit_group))
+ printf(ARGS(exit_group, "%i"), args->error_code);
+#endif
+
+ td_em = em_find(td->td_proc, EMUL_UNLOCKED);
+
+ KASSERT(td_em != NULL, ("exit_group: emuldata not found.\n"));
+
+ EMUL_SHARED_RLOCK(&emul_shared_lock);
+ LIST_FOREACH_SAFE(em, &td_em->shared->threads, threads, tmp_em) {
+ if (em->pid == td_em->pid)
+ continue;
+
+ sp = pfind(em->pid);
+ psignal(sp, SIGKILL);
+ PROC_UNLOCK(sp);
+#ifdef DEBUG
+ printf(LMSG("linux_sys_exit_group: kill PID %d\n"), em->pid);
+#endif
+ }
+
+ EMUL_SHARED_RUNLOCK(&emul_shared_lock);
+ EMUL_UNLOCK(&emul_lock);
+
+ exit1(td, W_EXITCODE(args->error_code,0));
+
+ return (0);
+}
+
diff --git a/sys/compat/linux/linux_signal.c b/sys/compat/linux/linux_signal.c
index 081b7c0b8035..50a05fa434e1 100644
--- a/sys/compat/linux/linux_signal.c
+++ b/sys/compat/linux/linux_signal.c
@@ -49,6 +49,10 @@ __FBSDID("$FreeBSD$");
#endif
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_util.h>
+#include <compat/linux/linux_emul.h>
+
+extern struct sx emul_shared_lock;
+extern struct sx emul_lock;
void
linux_to_bsd_sigset(l_sigset_t *lss, sigset_t *bss)
@@ -447,3 +451,57 @@ linux_kill(struct thread *td, struct linux_kill_args *args)
tmp.pid = args->pid;
return (kill(td, &tmp));
}
+
+int
+linux_tgkill(struct thread *td, struct linux_tgkill_args *args)
+{
+ struct linux_emuldata *em;
+ struct linux_kill_args ka;
+ struct proc *p;
+
+#ifdef DEBUG
+ if (ldebug(tgkill))
+ printf(ARGS(tgkill, "%d, %d, %d"), args->tgid, args->pid, args->sig);
+#endif
+
+ ka.pid = args->pid;
+ ka.signum = args->sig;
+
+ if (args->tgid == -1)
+ return linux_kill(td, &ka);
+
+ if ((p = pfind(args->pid)) == NULL)
+ return ESRCH;
+
+ if (p->p_sysent != &elf_linux_sysvec)
+ return ESRCH;
+
+ PROC_UNLOCK(p);
+
+ em = em_find(p, EMUL_UNLOCKED);
+
+ if (em == NULL) {
+#ifdef DEBUG
+ printf("emuldata not found in tgkill.\n");
+#endif
+ return ESRCH;
+ }
+
+ if (em->shared->group_pid != args->tgid)
+ return ESRCH;
+
+ EMUL_UNLOCK(&emul_lock);
+
+ return linux_kill(td, &ka);
+}
+
+int
+linux_tkill(struct thread *td, struct linux_tkill_args *args)
+{
+#ifdef DEBUG
+ if (ldebug(tkill))
+ printf(ARGS(tkill, "%i, %i"), args->tid, args->sig);
+#endif
+
+ return (linux_kill(td, (struct linux_kill_args *) args));
+}
diff --git a/sys/compat/linux/linux_util.c b/sys/compat/linux/linux_util.c
index 09c51311dc7c..8103c3a90838 100644
--- a/sys/compat/linux/linux_util.c
+++ b/sys/compat/linux/linux_util.c
@@ -32,6 +32,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include "opt_compat.h"
+
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/lock.h>
@@ -47,6 +49,11 @@ __FBSDID("$FreeBSD$");
#include <machine/stdarg.h>
#include <compat/linux/linux_util.h>
+#ifdef COMPAT_LINUX32
+#include <machine/../linux32/linux.h>
+#else
+#include <machine/../linux/linux.h>
+#endif
const char linux_emul_path[] = "/compat/linux";
@@ -85,8 +92,6 @@ linux_msg(const struct thread *td, const char *fmt, ...)
printf("\n");
}
-MALLOC_DECLARE(M_LINUX);
-
struct device_element
{
TAILQ_ENTRY(device_element) list;
diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64
index d1366bf15197..742483233b4b 100644
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -233,7 +233,9 @@ amd64/linux32/linux32_locore.s optional compat_linux32 \
amd64/linux32/linux32_machdep.c optional compat_linux32
amd64/linux32/linux32_sysent.c optional compat_linux32
amd64/linux32/linux32_sysvec.c optional compat_linux32
+compat/linux/linux_emul.c optional compat_linux32
compat/linux/linux_file.c optional compat_linux32
+compat/linux/linux_futex.c optional compat_linux32
compat/linux/linux_getcwd.c optional compat_linux32
compat/linux/linux_ioctl.c optional compat_linux32
compat/linux/linux_ipc.c optional compat_linux32
@@ -243,6 +245,7 @@ compat/linux/linux_signal.c optional compat_linux32
compat/linux/linux_socket.c optional compat_linux32
compat/linux/linux_stats.c optional compat_linux32
compat/linux/linux_sysctl.c optional compat_linux32
+compat/linux/linux_time.c optional compat_linux32
compat/linux/linux_uid16.c optional compat_linux32
compat/linux/linux_util.c optional compat_linux32
dev/amr/amr_linux.c optional compat_linux32 amr
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index eba426ee603d..bd569bdeee4c 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -85,7 +85,9 @@ rr232x_lib.o optional rr232x \
#
compat/linprocfs/linprocfs.c optional linprocfs
compat/linsysfs/linsysfs.c optional linsysfs
+compat/linux/linux_emul.c optional compat_linux
compat/linux/linux_file.c optional compat_linux
+compat/linux/linux_futex.c optional compat_linux
compat/linux/linux_getcwd.c optional compat_linux
compat/linux/linux_ioctl.c optional compat_linux
compat/linux/linux_ipc.c optional compat_linux
@@ -95,6 +97,7 @@ compat/linux/linux_signal.c optional compat_linux
compat/linux/linux_socket.c optional compat_linux
compat/linux/linux_stats.c optional compat_linux
compat/linux/linux_sysctl.c optional compat_linux
+compat/linux/linux_time.c optional compat_linux
compat/linux/linux_uid16.c optional compat_linux
compat/linux/linux_util.c optional compat_linux
compat/ndis/kern_ndis.c optional ndisapi pci
diff --git a/sys/i386/linux/linux.h b/sys/i386/linux/linux.h
index 08a76f320e86..4bbf3039f535 100644
--- a/sys/i386/linux/linux.h
+++ b/sys/i386/linux/linux.h
@@ -32,6 +32,10 @@
#define _I386_LINUX_LINUX_H_
#include <sys/signal.h> /* for sigval union */
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/sx.h>
#include <i386/linux/linux_syscall.h>
@@ -706,4 +710,99 @@ struct l_pollfd {
l_short revents;
};
+struct l_user_desc {
+ l_uint entry_number;
+ l_uint base_addr;
+ l_uint limit;
+ l_uint seg_32bit:1;
+ l_uint contents:2;
+ l_uint read_exec_only:1;
+ l_uint limit_in_pages:1;
+ l_uint seg_not_present:1;
+ l_uint useable:1;
+};
+
+struct l_desc_struct {
+ unsigned long a,b;
+};
+
+
+#define LINUX_LOWERWORD 0x0000ffff
+
+/* macros which does the same thing as those in linux include/asm-um/ldt-i386.h
+ * these convert linux user-space descriptor to machine one
+ */
+#define LDT_entry_a(info) \
+ ((((info)->base_addr & LINUX_LOWERWORD) << 16) | ((info)->limit & LINUX_LOWERWORD))
+
+#define ENTRY_B_READ_EXEC_ONLY 9
+#define ENTRY_B_CONTENTS 10
+#define ENTRY_B_SEG_NOT_PRESENT 15
+#define ENTRY_B_BASE_ADDR 16
+#define ENTRY_B_USEABLE 20
+#define ENTRY_B_SEG32BIT 22
+#define ENTRY_B_LIMIT 23
+
+#define LDT_entry_b(info) \
+ (((info)->base_addr & 0xff000000) | \
+ ((info)->limit & 0xf0000) | \
+ ((info)->contents << ENTRY_B_CONTENTS) | \
+ (((info)->seg_not_present == 0) << ENTRY_B_SEG_NOT_PRESENT) | \
+ (((info)->base_addr & 0x00ff0000) >> ENTRY_B_BASE_ADDR) | \
+ (((info)->read_exec_only == 0) << ENTRY_B_READ_EXEC_ONLY) | \
+ ((info)->seg_32bit << ENTRY_B_SEG32BIT) | \
+ ((info)->useable << ENTRY_B_USEABLE) | \
+ ((info)->limit_in_pages << ENTRY_B_LIMIT) | 0x7000)
+
+#define LDT_empty(info) (\
+ (info)->base_addr == 0 && \
+ (info)->limit == 0 && \
+ (info)->contents == 0 && \
+ (info)->seg_not_present == 1 && \
+ (info)->read_exec_only == 1 && \
+ (info)->seg_32bit == 0 && \
+ (info)->limit_in_pages == 0 && \
+ (info)->useable == 0 )
+
+/* macros for converting segments, they do the same as those in arch/i386/kernel/process.c */
+#define GET_BASE(desc) ( \
+ (((desc)->a >> 16) & LINUX_LOWERWORD) | \
+ (((desc)->b << 16) & 0x00ff0000) | \
+ ( (desc)->b & 0xff000000) )
+
+#define GET_LIMIT(desc) ( \
+ ((desc)->a & LINUX_LOWERWORD) | \
+ ((desc)->b & 0xf0000) )
+
+#define GET_32BIT(desc) (((desc)->b >> ENTRY_B_SEG32BIT) & 1)
+#define GET_CONTENTS(desc) (((desc)->b >> ENTRY_B_CONTENTS) & 3)
+#define GET_WRITABLE(desc) (((desc)->b >> ENTRY_B_READ_EXEC_ONLY) & 1)
+#define GET_LIMIT_PAGES(desc) (((desc)->b >> ENTRY_B_LIMIT) & 1)
+#define GET_PRESENT(desc) (((desc)->b >> ENTRY_B_SEG_NOT_PRESENT) & 1)
+#define GET_USEABLE(desc) (((desc)->b >> ENTRY_B_USEABLE) & 1)
+
+#define LINUX_CLOCK_REALTIME 0
+#define LINUX_CLOCK_MONOTONIC 1
+#define LINUX_CLOCK_PROCESS_CPUTIME_ID 2
+#define LINUX_CLOCK_THREAD_CPUTIME_ID 3
+#define LINUX_CLOCK_REALTIME_HR 4
+#define LINUX_CLOCK_MONOTONIC_HR 5
+
+typedef int l_timer_t;
+typedef int l_mqd_t;
+
+#define CLONE_VM 0x100
+#define CLONE_FS 0x200
+#define CLONE_FILES 0x400
+#define CLONE_SIGHAND 0x800
+#define CLONE_PID 0x1000 /* this flag does not exist in linux anymore */
+#define CLONE_PARENT 0x00008000
+#define CLONE_THREAD 0x10000
+#define CLONE_SETTLS 0x80000
+#define CLONE_CHILD_CLEARTID 0x00200000
+#define CLONE_CHILD_SETTID 0x01000000
+#define CLONE_PARENT_SETTID 0x00100000
+
+#define THREADING_FLAGS (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
+
#endif /* !_I386_LINUX_LINUX_H_ */
diff --git a/sys/i386/linux/linux_dummy.c b/sys/i386/linux/linux_dummy.c
index 939866ae882c..322b9b2ccece 100644
--- a/sys/i386/linux/linux_dummy.c
+++ b/sys/i386/linux/linux_dummy.c
@@ -61,7 +61,7 @@ DUMMY(rt_sigtimedwait);
DUMMY(rt_sigqueueinfo);
DUMMY(capget);
DUMMY(capset);
-DUMMY(sendfile);
+DUMMY(sendfile); /* different semantics */
DUMMY(truncate64);
DUMMY(setfsuid);
DUMMY(setfsgid);
@@ -73,30 +73,13 @@ DUMMY(epoll_create);
DUMMY(epoll_ctl);
DUMMY(epoll_wait);
DUMMY(remap_file_pages);
-DUMMY(set_tid_address);
-DUMMY(timer_create);
-DUMMY(timer_settime);
-DUMMY(timer_gettime);
-DUMMY(timer_getoverrun);
-DUMMY(timer_delete);
-DUMMY(clock_settime);
-DUMMY(clock_gettime);
-DUMMY(clock_getres);
-DUMMY(clock_nanosleep);
DUMMY(statfs64);
DUMMY(fstatfs64);
-DUMMY(tgkill);
DUMMY(utimes);
DUMMY(fadvise64_64);
DUMMY(mbind);
DUMMY(get_mempolicy);
DUMMY(set_mempolicy);
-DUMMY(mq_open);
-DUMMY(mq_unlink);
-DUMMY(mq_timedsend);
-DUMMY(mq_timedreceive);
-DUMMY(mq_notify);
-DUMMY(mq_getsetattr);
DUMMY(kexec_load);
DUMMY(waitid);
DUMMY(add_key);
diff --git a/sys/i386/linux/linux_machdep.c b/sys/i386/linux/linux_machdep.c
index 68e7039f3529..1b73e7e97326 100644
--- a/sys/i386/linux/linux_machdep.c
+++ b/sys/i386/linux/linux_machdep.c
@@ -36,13 +36,16 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/mutex.h>
+#include <sys/sx.h>
#include <sys/proc.h>
+#include <sys/queue.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/signalvar.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/unistd.h>
+#include <sys/wait.h>
#include <machine/frame.h>
#include <machine/psl.h>
@@ -58,6 +61,16 @@ __FBSDID("$FreeBSD$");
#include <compat/linux/linux_ipc.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_util.h>
+#include <compat/linux/linux_emul.h>
+
+#include <i386/include/pcb.h> /* needed for pcb definition in linux_set_thread_area */
+
+#include "opt_posix.h"
+
+extern struct sx emul_shared_lock;
+extern struct sx emul_lock;
+
+extern struct sysentvec elf32_freebsd_sysvec; /* defined in i386/i386/elf_machdep.c */
struct l_descriptor {
l_uint entry_number;
@@ -122,6 +135,14 @@ linux_execve(struct thread *td, struct linux_execve_args *args)
free(newpath, M_TEMP);
if (error == 0)
error = kern_execve(td, &eargs, NULL);
+ if (error == 0)
+ /* linux process can exec fbsd one, dont attempt
+ * to create emuldata for such process using
+ * linux_proc_init, this leads to a panic on KASSERT
+ * because such process has p->p_emuldata == NULL
+ */
+ if (td->td_proc->p_sysent == &elf_linux_sysvec)
+ error = linux_proc_init(td, 0, 0);
return (error);
}
@@ -287,6 +308,10 @@ linux_fork(struct thread *td, struct linux_fork_args *args)
if (td->td_retval[1] == 1)
td->td_retval[0] = 0;
+ error = linux_proc_init(td, td->td_retval[0], 0);
+ if (error)
+ return (error);
+
return (0);
}
@@ -305,18 +330,12 @@ linux_vfork(struct thread *td, struct linux_vfork_args *args)
/* Are we the child? */
if (td->td_retval[1] == 1)
td->td_retval[0] = 0;
+ error = linux_proc_init(td, td->td_retval[0], 0);
+ if (error)
+ return (error);
return (0);
}
-#define CLONE_VM 0x100
-#define CLONE_FS 0x200
-#define CLONE_FILES 0x400
-#define CLONE_SIGHAND 0x800
-#define CLONE_PID 0x1000
-#define CLONE_THREAD 0x10000
-
-#define THREADING_FLAGS (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
-
int
linux_clone(struct thread *td, struct linux_clone_args *args)
{
@@ -324,19 +343,16 @@ linux_clone(struct thread *td, struct linux_clone_args *args)
struct proc *p2;
struct thread *td2;
int exit_signal;
+ struct linux_emuldata *em;
#ifdef DEBUG
if (ldebug(clone)) {
- printf(ARGS(clone, "flags %x, stack %x"),
- (unsigned int)args->flags, (unsigned int)args->stack);
- if (args->flags & CLONE_PID)
- printf(LMSG("CLONE_PID not yet supported"));
+ printf(ARGS(clone, "flags %x, stack %x, parent tid: %x, child tid: %x"),
+ (unsigned int)args->flags, (unsigned int)args->stack,
+ (unsigned int)args->parent_tidptr, (unsigned int)args->child_tidptr);
}
#endif
- if (!args->stack)
- return (EINVAL);
-
exit_signal = args->flags & 0x000000ff;
if (exit_signal >= LINUX_NSIG)
return (EINVAL);
@@ -371,12 +387,118 @@ linux_clone(struct thread *td, struct linux_clone_args *args)
if (error)
return (error);
+ /* create the emuldata */
+ error = linux_proc_init(td, p2->p_pid, args->flags);
+ /* reference it - no need to check this */
+ em = em_find(p2, EMUL_UNLOCKED);
+ KASSERT(em != NULL, ("clone: emuldata not found.\n"));
+ /* and adjust it */
+ if (args->flags & CLONE_PARENT_SETTID) {
+ if (args->parent_tidptr == NULL) {
+ EMUL_UNLOCK(&emul_lock);
+ return (EINVAL);
+ }
+ error = copyout(&p2->p_pid, args->parent_tidptr, sizeof(p2->p_pid));
+ if (error) {
+ EMUL_UNLOCK(&emul_lock);
+ return (error);
+ }
+ }
+
+ if (args->flags & CLONE_PARENT) {
+#ifdef DEBUG
+ printf("linux_clone: CLONE_PARENT\n");
+#endif
+ }
+
+ if (args->flags & CLONE_THREAD) {
+ /* XXX: linux mangles pgrp and pptr somehow
+ * I think it might be this but I am not sure.
+ */
+#ifdef notyet
+ p2->p_pgrp = td->td_proc->p_pgrp;
+ p2->p_pptr = td->td_proc->p_pptr;
+#endif
+ exit_signal = 0;
+#ifdef DEBUG
+ printf("linux_clone: CLONE_THREADS\n");
+#endif
+ }
+
+ if (args->flags & CLONE_CHILD_SETTID)
+ em->child_set_tid = args->child_tidptr;
+ else
+ em->child_set_tid = NULL;
+
+ if (args->flags & CLONE_CHILD_CLEARTID)
+ em->child_clear_tid = args->child_tidptr;
+ else
+ em->child_clear_tid = NULL;
+ EMUL_UNLOCK(&emul_lock);
PROC_LOCK(p2);
p2->p_sigparent = exit_signal;
PROC_UNLOCK(p2);
td2 = FIRST_THREAD_IN_PROC(p2);
- td2->td_frame->tf_esp = (unsigned int)args->stack;
+ /* in a case of stack = NULL we are supposed to COW calling process stack
+ * this is what normal fork() does so we just keep the tf_esp arg intact
+ */
+ if (args->stack)
+ td2->td_frame->tf_esp = (unsigned int)args->stack;
+
+ if (args->flags & CLONE_SETTLS) {
+ struct l_user_desc info;
+ int idx;
+ int a[2];
+ struct segment_descriptor sd;
+
+ error = copyin((void *)td->td_frame->tf_esi, &info, sizeof(struct l_user_desc));
+ if (error)
+ return (error);
+
+ idx = info.entry_number;
+
+ /* looks like we're getting the idx we returned
+ * in the set_thread_area() syscall
+ */
+ if (idx != 6 && idx != 3)
+ return (EINVAL);
+
+ /* this doesnt happen in practice */
+ if (idx == 6) {
+ /* we might copy out the entry_number as 3 */
+ info.entry_number = 3;
+ error = copyout(&info, (void *) td->td_frame->tf_esi, sizeof(struct l_user_desc));
+ if (error)
+ return (error);
+ }
+
+ a[0] = LDT_entry_a(&info);
+ a[1] = LDT_entry_b(&info);
+
+ memcpy(&sd, &a, sizeof(a));
+#ifdef DEBUG
+ if (ldebug(clone))
+ printf("Segment created in clone with CLONE_SETTLS: lobase: %x, hibase: %x, lolimit: %x, hilimit: %x, type: %i, dpl: %i, p: %i, xx: %i, def32: %i, gran: %i\n", sd.sd_lobase,
+ sd.sd_hibase,
+ sd.sd_lolimit,
+ sd.sd_hilimit,
+ sd.sd_type,
+ sd.sd_dpl,
+ sd.sd_p,
+ sd.sd_xx,
+ sd.sd_def32,
+ sd.sd_gran);
+#endif
+
+ /* this is taken from i386 version of cpu_set_user_tls() */
+ critical_enter();
+ /* set %gs */
+ td2->td_pcb->pcb_gsd = sd;
+ PCPU_GET(fsgs_gdt)[1] = sd;
+ load_gs(GSEL(GUGS_SEL, SEL_UPL));
+ critical_exit();
+ }
#ifdef DEBUG
if (ldebug(clone))
@@ -847,25 +969,234 @@ linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args)
int
linux_set_thread_area(struct thread *td, struct linux_set_thread_area_args *args)
{
- /*
- * Return an error code instead of raising a SIGSYS so that
- * the caller will fall back to simpler LDT methods.
+ struct l_user_desc info;
+ int error;
+ int idx;
+ int a[2];
+ struct segment_descriptor sd;
+
+ error = copyin(args->desc, &info, sizeof(struct l_user_desc));
+ if (error)
+ return (error);
+
+#ifdef DEBUG
+ if (ldebug(set_thread_area))
+ printf(ARGS(set_thread_area, "%i, %x, %x, %i, %i, %i, %i, %i, %i\n"),
+ info.entry_number,
+ info.base_addr,
+ info.limit,
+ info.seg_32bit,
+ info.contents,
+ info.read_exec_only,
+ info.limit_in_pages,
+ info.seg_not_present,
+ info.useable);
+#endif
+
+ idx = info.entry_number;
+ /* Semantics of linux version: every thread in the system has array
+ * of 3 tls descriptors. 1st is GLIBC TLS, 2nd is WINE, 3rd unknown. This
+ * syscall loads one of the selected tls decriptors with a value
+ * and also loads GDT descriptors 6, 7 and 8 with the content of the per-thread
+ * descriptors.
+ *
+ * Semantics of fbsd version: I think we can ignore that linux has 3 per-thread
+ * descriptors and use just the 1st one. The tls_array[] is used only in
+ * set/get-thread_area() syscalls and for loading the GDT descriptors. In fbsd
+ * we use just one GDT descriptor for TLS so we will load just one.
+ * XXX: this doesnt work when user-space process tries to use more then 1 TLS segment
+ * comment in the linux sources says wine might do that.
*/
- return (ENOSYS);
+
+ /* we support just GLIBC TLS now
+ * we should let 3 proceed as well because we use this segment so
+ * if code does two subsequent calls it should succeed
+ */
+ if (idx != 6 && idx != -1 && idx != 3)
+ return (EINVAL);
+
+ /* we have to copy out the GDT entry we use
+ * FreeBSD uses GDT entry #3 for storing %gs so load that
+ * XXX: what if userspace program doesnt check this value and tries
+ * to use 6, 7 or 8?
+ */
+ idx = info.entry_number = 3;
+ error = copyout(&info, args->desc, sizeof(struct l_user_desc));
+ if (error)
+ return (error);
+
+ if (LDT_empty(&info)) {
+ a[0] = 0;
+ a[1] = 0;
+ } else {
+ a[0] = LDT_entry_a(&info);
+ a[1] = LDT_entry_b(&info);
+ }
+
+ memcpy(&sd, &a, sizeof(a));
+#ifdef DEBUG
+ if (ldebug(set_thread_area))
+ printf("Segment created in set_thread_area: lobase: %x, hibase: %x, lolimit: %x, hilimit: %x, type: %i, dpl: %i, p: %i, xx: %i, def32: %i, gran: %i\n", sd.sd_lobase,
+ sd.sd_hibase,
+ sd.sd_lolimit,
+ sd.sd_hilimit,
+ sd.sd_type,
+ sd.sd_dpl,
+ sd.sd_p,
+ sd.sd_xx,
+ sd.sd_def32,
+ sd.sd_gran);
+#endif
+
+ /* this is taken from i386 version of cpu_set_user_tls() */
+ critical_enter();
+ /* set %gs */
+ td->td_pcb->pcb_gsd = sd;
+ PCPU_GET(fsgs_gdt)[1] = sd;
+ load_gs(GSEL(GUGS_SEL, SEL_UPL));
+ critical_exit();
+
+ return (0);
}
int
-linux_gettid(struct thread *td, struct linux_gettid_args *args)
+linux_get_thread_area(struct thread *td, struct linux_get_thread_area_args *args)
{
+
+ struct l_user_desc info;
+ int error;
+ int idx;
+ struct l_desc_struct desc;
+ struct segment_descriptor sd;
+
+#ifdef DEBUG
+ if (ldebug(get_thread_area))
+ printf(ARGS(get_thread_area, "%p"), args->desc);
+#endif
+
+ error = copyin(args->desc, &info, sizeof(struct l_user_desc));
+ if (error)
+ return (error);
+
+ idx = info.entry_number;
+ /* XXX: I am not sure if we want 3 to be allowed too. */
+ if (idx != 6 && idx != 3)
+ return (EINVAL);
+
+ idx = 3;
+
+ memset(&info, 0, sizeof(info));
+
+ sd = PCPU_GET(fsgs_gdt)[1];
+
+ memcpy(&desc, &sd, sizeof(desc));
+
+ info.entry_number = idx;
+ info.base_addr = GET_BASE(&desc);
+ info.limit = GET_LIMIT(&desc);
+ info.seg_32bit = GET_32BIT(&desc);
+ info.contents = GET_CONTENTS(&desc);
+ info.read_exec_only = !GET_WRITABLE(&desc);
+ info.limit_in_pages = GET_LIMIT_PAGES(&desc);
+ info.seg_not_present = !GET_PRESENT(&desc);
+ info.useable = GET_USEABLE(&desc);
+
+ error = copyout(&info, args->desc, sizeof(struct l_user_desc));
+ if (error)
+ return (EFAULT);
- td->td_retval[0] = td->td_proc->p_pid;
return (0);
}
+/* copied from kern/kern_time.c */
+int
+linux_timer_create(struct thread *td, struct linux_timer_create_args *args)
+{
+ return ktimer_create(td, (struct ktimer_create_args *) args);
+}
+
+int
+linux_timer_settime(struct thread *td, struct linux_timer_settime_args *args)
+{
+ return ktimer_settime(td, (struct ktimer_settime_args *) args);
+}
+
+int
+linux_timer_gettime(struct thread *td, struct linux_timer_gettime_args *args)
+{
+ return ktimer_gettime(td, (struct ktimer_gettime_args *) args);
+}
+
+int
+linux_timer_getoverrun(struct thread *td, struct linux_timer_getoverrun_args *args)
+{
+ return ktimer_getoverrun(td, (struct ktimer_getoverrun_args *) args);
+}
+
int
-linux_tkill(struct thread *td, struct linux_tkill_args *args)
+linux_timer_delete(struct thread *td, struct linux_timer_delete_args *args)
{
+ return ktimer_delete(td, (struct ktimer_delete_args *) args);
+}
+
+/* XXX: this wont work with module - convert it */
+int
+linux_mq_open(struct thread *td, struct linux_mq_open_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_open(td, (struct kmq_open_args *) args);
+#else
+ return (ENOSYS);
+#endif
+}
+
+int
+linux_mq_unlink(struct thread *td, struct linux_mq_unlink_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_unlink(td, (struct kmq_unlink_args *) args);
+#else
+ return (ENOSYS);
+#endif
+}
- return (linux_kill(td, (struct linux_kill_args *) args));
+int
+linux_mq_timedsend(struct thread *td, struct linux_mq_timedsend_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_timedsend(td, (struct kmq_timedsend_args *) args);
+#else
+ return (ENOSYS);
+#endif
+}
+
+int
+linux_mq_timedreceive(struct thread *td, struct linux_mq_timedreceive_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_timedreceive(td, (struct kmq_timedreceive_args *) args);
+#else
+ return (ENOSYS);
+#endif
+}
+
+int
+linux_mq_notify(struct thread *td, struct linux_mq_notify_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_notify(td, (struct kmq_notify_args *) args);
+#else
+ return (ENOSYS);
+#endif
+}
+
+int
+linux_mq_getsetattr(struct thread *td, struct linux_mq_getsetattr_args *args)
+{
+#ifdef P1003_1B_MQUEUE
+ return kmq_setattr(td, (struct kmq_setattr_args *) args);
+#else
+ return (ENOSYS);
+#endif
}
diff --git a/sys/i386/linux/linux_sysvec.c b/sys/i386/linux/linux_sysvec.c
index 70ebfc123e2c..e3e65e9bfc53 100644
--- a/sys/i386/linux/linux_sysvec.c
+++ b/sys/i386/linux/linux_sysvec.c
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/vnode.h>
+#include <sys/eventhandler.h>
#include <vm/vm.h>
#include <vm/pmap.h>
@@ -105,6 +106,18 @@ static void linux_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask);
static void exec_linux_setregs(struct thread *td, u_long entry,
u_long stack, u_long ps_strings);
+extern void linux_proc_exit(void *, struct proc *, struct image_params *);
+extern void linux_proc_exec(void *, struct proc *, struct image_params *);
+extern void linux_schedtail(void *, struct proc *);
+extern LIST_HEAD(futex_list, futex) futex_list;
+extern struct sx emul_shared_lock;
+extern struct sx emul_lock;
+extern struct mtx futex_mtx;
+
+static eventhandler_tag linux_exit_tag;
+static eventhandler_tag linux_schedtail_tag;
+static eventhandler_tag linux_exec_tag;
+
/*
* Linux syscalls return negative errno's, we do positive and map them
* Reference:
@@ -804,7 +817,7 @@ exec_linux_setregs(struct thread *td, u_long entry,
struct sysentvec linux_sysvec = {
LINUX_SYS_MAXSYSCALL,
linux_sysent,
- 0xff,
+ 0,
LINUX_SIGTBLSZ,
bsd_to_linux_signal,
ELAST + 1,
@@ -833,7 +846,7 @@ struct sysentvec linux_sysvec = {
struct sysentvec elf_linux_sysvec = {
LINUX_SYS_MAXSYSCALL,
linux_sysent,
- 0xff,
+ 0,
LINUX_SIGTBLSZ,
bsd_to_linux_signal,
ELAST + 1,
@@ -908,6 +921,16 @@ linux_elf_modevent(module_t mod, int type, void *data)
linux_ioctl_register_handler(*lihp);
SET_FOREACH(ldhp, linux_device_handler_set)
linux_device_register_handler(*ldhp);
+ sx_init(&emul_lock, "emuldata lock");
+ sx_init(&emul_shared_lock, "emuldata->shared lock");
+ LIST_INIT(&futex_list);
+ mtx_init(&futex_mtx, "futex protection lock", NULL, MTX_DEF);
+ linux_exit_tag = EVENTHANDLER_REGISTER(process_exit, linux_proc_exit,
+ NULL, 1000);
+ linux_schedtail_tag = EVENTHANDLER_REGISTER(schedtail, linux_schedtail,
+ NULL, 1000);
+ linux_exec_tag = EVENTHANDLER_REGISTER(process_exec, linux_proc_exec,
+ NULL, 1000);
if (bootverbose)
printf("Linux ELF exec handler installed\n");
} else
@@ -929,6 +952,12 @@ linux_elf_modevent(module_t mod, int type, void *data)
linux_ioctl_unregister_handler(*lihp);
SET_FOREACH(ldhp, linux_device_handler_set)
linux_device_unregister_handler(*ldhp);
+ sx_destroy(&emul_lock);
+ sx_destroy(&emul_shared_lock);
+ mtx_destroy(&futex_mtx);
+ EVENTHANDLER_DEREGISTER(process_exit, linux_exit_tag);
+ EVENTHANDLER_DEREGISTER(schedtail, linux_schedtail_tag);
+ EVENTHANDLER_DEREGISTER(process_exec, linux_exec_tag);
if (bootverbose)
printf("Linux ELF exec handler removed\n");
} else
generated by cgit v1.2.3 (git 2.25.1) at 2021-09-28 02:59:26 +0000