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-rw-r--r--arch/um/Makefile23
-rw-r--r--arch/um/drivers/chan_kern.c6
-rw-r--r--arch/um/drivers/chan_user.c15
-rw-r--r--arch/um/drivers/daemon_kern.c4
-rw-r--r--arch/um/drivers/line.c2
-rw-r--r--arch/um/drivers/mcast_kern.c4
-rw-r--r--arch/um/drivers/mconsole_kern.c11
-rw-r--r--arch/um/drivers/net_kern.c29
-rw-r--r--arch/um/drivers/slip_common.h13
-rw-r--r--arch/um/drivers/slip_kern.c15
-rw-r--r--arch/um/drivers/slirp_kern.c13
-rw-r--r--arch/um/drivers/ssl.c6
-rw-r--r--arch/um/include/kern_util.h2
-rw-r--r--arch/um/include/registers.h2
-rw-r--r--arch/um/kernel/exec_kern.c2
-rw-r--r--arch/um/kernel/physmem.c2
-rw-r--r--arch/um/kernel/reboot.c1
-rw-r--r--arch/um/kernel/skas/process.c569
-rw-r--r--arch/um/kernel/tt/syscall_kern.c8
-rw-r--r--arch/um/kernel/um_arch.c18
-rw-r--r--arch/um/os-Linux/drivers/tuntap_user.c4
-rw-r--r--arch/um/os-Linux/skas/mem.c2
-rw-r--r--arch/um/os-Linux/skas/process.c21
-rw-r--r--arch/um/os-Linux/start_up.c1
-rw-r--r--arch/um/os-Linux/sys-i386/registers.c5
-rw-r--r--arch/um/os-Linux/sys-x86_64/registers.c5
-rw-r--r--arch/um/sys-i386/ldt.c2
-rw-r--r--arch/um/sys-x86_64/ptrace_user.c7
-rw-r--r--arch/um/sys-x86_64/user-offsets.c2
29 files changed, 145 insertions, 649 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 6430a6383853..c58b657f0097 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -47,13 +47,16 @@ ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
47endif 47endif
48SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) 48SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
49 49
50# -Dvmap=kernel_vmap affects everything, and prevents anything from 50# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
51# referencing the libpcap.o symbol so named. 51# named - it's a common symbol in libpcap, so we get a binary which crashes.
52# 52#
53# Same things for in6addr_loopback - found in libc. 53# Same things for in6addr_loopback and mktime - found in libc. For these two we
54# only get link-time error, luckily.
55#
56# These apply to USER_CFLAGS to.
54 57
55CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ 58CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
56 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ 59 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
57 -Din6addr_loopback=kernel_in6addr_loopback 60 -Din6addr_loopback=kernel_in6addr_loopback
58 61
59AFLAGS += $(ARCH_INCLUDE) 62AFLAGS += $(ARCH_INCLUDE)
@@ -66,6 +69,7 @@ USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
66# kernel_errno to separate them from the libc errno. This allows -fno-common 69# kernel_errno to separate them from the libc errno. This allows -fno-common
67# in CFLAGS. Otherwise, it would cause ld to complain about the two different 70# in CFLAGS. Otherwise, it would cause ld to complain about the two different
68# errnos. 71# errnos.
72# These apply to kernelspace only.
69 73
70CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ 74CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
71 -Dmktime=kernel_mktime 75 -Dmktime=kernel_mktime
@@ -168,10 +172,13 @@ else
168 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch 172 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
169endif 173endif
170 174
171$(ARCH_DIR)/include/sysdep: 175$(objtree)/$(ARCH_DIR)/include:
176 @echo ' MKDIR $@'
177 $(Q)mkdir -p $@
178
179$(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include
172 @echo ' SYMLINK $@' 180 @echo ' SYMLINK $@'
173ifneq ($(KBUILD_SRC),) 181ifneq ($(KBUILD_SRC),)
174 $(Q)mkdir -p $(ARCH_DIR)/include
175 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep 182 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
176else 183else
177 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep 184 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
@@ -214,7 +221,7 @@ $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s
214 221
215CLEAN_FILES += $(ARCH_DIR)/user-offsets.s 222CLEAN_FILES += $(ARCH_DIR)/user-offsets.s
216 223
217$(ARCH_DIR)/include/kern_constants.h: 224$(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
218 @echo ' SYMLINK $@' 225 @echo ' SYMLINK $@'
219 $(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@ 226 $(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@
220 227
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index ab0d0b170816..7218c754505b 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -403,7 +403,7 @@ int chan_window_size(struct list_head *chans, unsigned short *rows_out,
403 return 0; 403 return 0;
404} 404}
405 405
406void free_one_chan(struct chan *chan, int delay_free_irq) 406static void free_one_chan(struct chan *chan, int delay_free_irq)
407{ 407{
408 list_del(&chan->list); 408 list_del(&chan->list);
409 409
@@ -416,7 +416,7 @@ void free_one_chan(struct chan *chan, int delay_free_irq)
416 kfree(chan); 416 kfree(chan);
417} 417}
418 418
419void free_chan(struct list_head *chans, int delay_free_irq) 419static void free_chan(struct list_head *chans, int delay_free_irq)
420{ 420{
421 struct list_head *ele, *next; 421 struct list_head *ele, *next;
422 struct chan *chan; 422 struct chan *chan;
@@ -497,7 +497,7 @@ struct chan_type {
497 struct chan_ops *ops; 497 struct chan_ops *ops;
498}; 498};
499 499
500struct chan_type chan_table[] = { 500static struct chan_type chan_table[] = {
501 { "fd", &fd_ops }, 501 { "fd", &fd_ops },
502 502
503#ifdef CONFIG_NULL_CHAN 503#ifdef CONFIG_NULL_CHAN
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 5d50d4a44abf..2f880cb167a5 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -9,6 +9,7 @@
9#include <termios.h> 9#include <termios.h>
10#include <string.h> 10#include <string.h>
11#include <signal.h> 11#include <signal.h>
12#include <sched.h>
12#include <sys/stat.h> 13#include <sys/stat.h>
13#include <sys/ioctl.h> 14#include <sys/ioctl.h>
14#include <sys/socket.h> 15#include <sys/socket.h>
@@ -73,7 +74,6 @@ static void winch_handler(int sig)
73struct winch_data { 74struct winch_data {
74 int pty_fd; 75 int pty_fd;
75 int pipe_fd; 76 int pipe_fd;
76 int close_me;
77}; 77};
78 78
79static int winch_thread(void *arg) 79static int winch_thread(void *arg)
@@ -84,7 +84,6 @@ static int winch_thread(void *arg)
84 int count, err; 84 int count, err;
85 char c = 1; 85 char c = 1;
86 86
87 os_close_file(data->close_me);
88 pty_fd = data->pty_fd; 87 pty_fd = data->pty_fd;
89 pipe_fd = data->pipe_fd; 88 pipe_fd = data->pipe_fd;
90 count = os_write_file(pipe_fd, &c, sizeof(c)); 89 count = os_write_file(pipe_fd, &c, sizeof(c));
@@ -153,15 +152,16 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
153 } 152 }
154 153
155 data = ((struct winch_data) { .pty_fd = fd, 154 data = ((struct winch_data) { .pty_fd = fd,
156 .pipe_fd = fds[1], 155 .pipe_fd = fds[1] } );
157 .close_me = fds[0] } ); 156 /* CLONE_FILES so this thread doesn't hold open files which are open
158 err = run_helper_thread(winch_thread, &data, 0, &stack, 0); 157 * now, but later closed. This is a problem with /dev/net/tun.
158 */
159 err = run_helper_thread(winch_thread, &data, CLONE_FILES, &stack, 0);
159 if(err < 0){ 160 if(err < 0){
160 printk("fork of winch_thread failed - errno = %d\n", errno); 161 printk("fork of winch_thread failed - errno = %d\n", errno);
161 goto out_close; 162 goto out_close;
162 } 163 }
163 164
164 os_close_file(fds[1]);
165 *fd_out = fds[0]; 165 *fd_out = fds[0];
166 n = os_read_file(fds[0], &c, sizeof(c)); 166 n = os_read_file(fds[0], &c, sizeof(c));
167 if(n != sizeof(c)){ 167 if(n != sizeof(c)){
@@ -169,13 +169,12 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
169 printk("read failed, err = %d\n", -n); 169 printk("read failed, err = %d\n", -n);
170 printk("fd %d will not support SIGWINCH\n", fd); 170 printk("fd %d will not support SIGWINCH\n", fd);
171 err = -EINVAL; 171 err = -EINVAL;
172 goto out_close1; 172 goto out_close;
173 } 173 }
174 return err ; 174 return err ;
175 175
176 out_close: 176 out_close:
177 os_close_file(fds[1]); 177 os_close_file(fds[1]);
178 out_close1:
179 os_close_file(fds[0]); 178 os_close_file(fds[0]);
180 out: 179 out:
181 return err; 180 return err;
diff --git a/arch/um/drivers/daemon_kern.c b/arch/um/drivers/daemon_kern.c
index 507e3cbac9d3..a61b7b46bc02 100644
--- a/arch/um/drivers/daemon_kern.c
+++ b/arch/um/drivers/daemon_kern.c
@@ -18,7 +18,7 @@ struct daemon_init {
18 char *ctl_sock; 18 char *ctl_sock;
19}; 19};
20 20
21void daemon_init(struct net_device *dev, void *data) 21static void daemon_init(struct net_device *dev, void *data)
22{ 22{
23 struct uml_net_private *pri; 23 struct uml_net_private *pri;
24 struct daemon_data *dpri; 24 struct daemon_data *dpri;
@@ -64,7 +64,7 @@ static struct net_kern_info daemon_kern_info = {
64 .write = daemon_write, 64 .write = daemon_write,
65}; 65};
66 66
67int daemon_setup(char *str, char **mac_out, void *data) 67static int daemon_setup(char *str, char **mac_out, void *data)
68{ 68{
69 struct daemon_init *init = data; 69 struct daemon_init *init = data;
70 char *remain; 70 char *remain;
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 46ceb25a9959..6c2d4ccaf20f 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -714,7 +714,7 @@ struct winch {
714 struct tty_struct *tty; 714 struct tty_struct *tty;
715}; 715};
716 716
717irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused) 717static irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
718{ 718{
719 struct winch *winch = data; 719 struct winch *winch = data;
720 struct tty_struct *tty; 720 struct tty_struct *tty;
diff --git a/arch/um/drivers/mcast_kern.c b/arch/um/drivers/mcast_kern.c
index 217438cdef33..c9b078fba03e 100644
--- a/arch/um/drivers/mcast_kern.c
+++ b/arch/um/drivers/mcast_kern.c
@@ -26,7 +26,7 @@ struct mcast_init {
26 int ttl; 26 int ttl;
27}; 27};
28 28
29void mcast_init(struct net_device *dev, void *data) 29static void mcast_init(struct net_device *dev, void *data)
30{ 30{
31 struct uml_net_private *pri; 31 struct uml_net_private *pri;
32 struct mcast_data *dpri; 32 struct mcast_data *dpri;
@@ -40,7 +40,7 @@ void mcast_init(struct net_device *dev, void *data)
40 dpri->dev = dev; 40 dpri->dev = dev;
41 41
42 printk("mcast backend "); 42 printk("mcast backend ");
43 printk("multicast adddress: %s:%u, TTL:%u ", 43 printk("multicast address: %s:%u, TTL:%u ",
44 dpri->addr, dpri->port, dpri->ttl); 44 dpri->addr, dpri->port, dpri->ttl);
45 45
46 printk("\n"); 46 printk("\n");
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index e3d576567172..54388d10bcf9 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -273,7 +273,7 @@ void mconsole_proc(struct mc_request *req)
273 config <dev> - Query the configuration of a device \n\ 273 config <dev> - Query the configuration of a device \n\
274 remove <dev> - Remove a device from UML \n\ 274 remove <dev> - Remove a device from UML \n\
275 sysrq <letter> - Performs the SysRq action controlled by the letter \n\ 275 sysrq <letter> - Performs the SysRq action controlled by the letter \n\
276 cad - invoke the Ctl-Alt-Del handler \n\ 276 cad - invoke the Ctrl-Alt-Del handler \n\
277 stop - pause the UML; it will do nothing until it receives a 'go' \n\ 277 stop - pause the UML; it will do nothing until it receives a 'go' \n\
278 go - continue the UML after a 'stop' \n\ 278 go - continue the UML after a 'stop' \n\
279 log <string> - make UML enter <string> into the kernel log\n\ 279 log <string> - make UML enter <string> into the kernel log\n\
@@ -327,7 +327,7 @@ void mconsole_stop(struct mc_request *req)
327 327
328/* This list is populated by __initcall routines. */ 328/* This list is populated by __initcall routines. */
329 329
330LIST_HEAD(mconsole_devices); 330static LIST_HEAD(mconsole_devices);
331 331
332void mconsole_register_dev(struct mc_device *new) 332void mconsole_register_dev(struct mc_device *new)
333{ 333{
@@ -561,6 +561,8 @@ void mconsole_sysrq(struct mc_request *req)
561} 561}
562#endif 562#endif
563 563
564#ifdef CONFIG_MODE_SKAS
565
564static void stack_proc(void *arg) 566static void stack_proc(void *arg)
565{ 567{
566 struct task_struct *from = current, *to = arg; 568 struct task_struct *from = current, *to = arg;
@@ -574,7 +576,7 @@ static void stack_proc(void *arg)
574 * Dumps a stacks registers to the linux console. 576 * Dumps a stacks registers to the linux console.
575 * Usage stack <pid>. 577 * Usage stack <pid>.
576 */ 578 */
577void do_stack(struct mc_request *req) 579static void do_stack_trace(struct mc_request *req)
578{ 580{
579 char *ptr = req->request.data; 581 char *ptr = req->request.data;
580 int pid_requested= -1; 582 int pid_requested= -1;
@@ -605,6 +607,7 @@ void do_stack(struct mc_request *req)
605 } 607 }
606 with_console(req, stack_proc, to); 608 with_console(req, stack_proc, to);
607} 609}
610#endif /* CONFIG_MODE_SKAS */
608 611
609void mconsole_stack(struct mc_request *req) 612void mconsole_stack(struct mc_request *req)
610{ 613{
@@ -613,7 +616,7 @@ void mconsole_stack(struct mc_request *req)
613 */ 616 */
614 CHOOSE_MODE(mconsole_reply(req, "Sorry, this doesn't work in TT mode", 617 CHOOSE_MODE(mconsole_reply(req, "Sorry, this doesn't work in TT mode",
615 1, 0), 618 1, 0),
616 do_stack(req)); 619 do_stack_trace(req));
617} 620}
618 621
619/* Changed by mconsole_setup, which is __setup, and called before SMP is 622/* Changed by mconsole_setup, which is __setup, and called before SMP is
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 8ebb2241ad42..8c7279bb353b 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -131,9 +131,8 @@ static int uml_net_open(struct net_device *dev)
131 SA_INTERRUPT | SA_SHIRQ, dev->name, dev); 131 SA_INTERRUPT | SA_SHIRQ, dev->name, dev);
132 if(err != 0){ 132 if(err != 0){
133 printk(KERN_ERR "uml_net_open: failed to get irq(%d)\n", err); 133 printk(KERN_ERR "uml_net_open: failed to get irq(%d)\n", err);
134 if(lp->close != NULL) (*lp->close)(lp->fd, &lp->user);
135 lp->fd = -1;
136 err = -ENETUNREACH; 134 err = -ENETUNREACH;
135 goto out_close;
137 } 136 }
138 137
139 lp->tl.data = (unsigned long) &lp->user; 138 lp->tl.data = (unsigned long) &lp->user;
@@ -145,9 +144,19 @@ static int uml_net_open(struct net_device *dev)
145 */ 144 */
146 while((err = uml_net_rx(dev)) > 0) ; 145 while((err = uml_net_rx(dev)) > 0) ;
147 146
148 out:
149 spin_unlock(&lp->lock); 147 spin_unlock(&lp->lock);
150 return(err); 148
149 spin_lock(&opened_lock);
150 list_add(&lp->list, &opened);
151 spin_unlock(&opened_lock);
152
153 return 0;
154out_close:
155 if(lp->close != NULL) (*lp->close)(lp->fd, &lp->user);
156 lp->fd = -1;
157out:
158 spin_unlock(&lp->lock);
159 return err;
151} 160}
152 161
153static int uml_net_close(struct net_device *dev) 162static int uml_net_close(struct net_device *dev)
@@ -161,9 +170,13 @@ static int uml_net_close(struct net_device *dev)
161 if(lp->close != NULL) 170 if(lp->close != NULL)
162 (*lp->close)(lp->fd, &lp->user); 171 (*lp->close)(lp->fd, &lp->user);
163 lp->fd = -1; 172 lp->fd = -1;
164 list_del(&lp->list);
165 173
166 spin_unlock(&lp->lock); 174 spin_unlock(&lp->lock);
175
176 spin_lock(&opened_lock);
177 list_del(&lp->list);
178 spin_unlock(&opened_lock);
179
167 return 0; 180 return 0;
168} 181}
169 182
@@ -410,11 +423,7 @@ static int eth_configure(int n, void *init, char *mac,
410 if (device->have_mac) 423 if (device->have_mac)
411 set_ether_mac(dev, device->mac); 424 set_ether_mac(dev, device->mac);
412 425
413 spin_lock(&opened_lock); 426 return 0;
414 list_add(&lp->list, &opened);
415 spin_unlock(&opened_lock);
416
417 return(0);
418} 427}
419 428
420static struct uml_net *find_device(int n) 429static struct uml_net *find_device(int n)
diff --git a/arch/um/drivers/slip_common.h b/arch/um/drivers/slip_common.h
index 2ae76d8f1be1..d574e0a9dc13 100644
--- a/arch/um/drivers/slip_common.h
+++ b/arch/um/drivers/slip_common.h
@@ -88,12 +88,13 @@ struct slip_proto {
88 int esc; 88 int esc;
89}; 89};
90 90
91#define SLIP_PROTO_INIT { \ 91static inline void slip_proto_init(struct slip_proto * slip)
92 .ibuf = { '\0' }, \ 92{
93 .obuf = { '\0' }, \ 93 memset(slip->ibuf, 0, sizeof(slip->ibuf));
94 .more = 0, \ 94 memset(slip->obuf, 0, sizeof(slip->obuf));
95 .pos = 0, \ 95 slip->more = 0;
96 .esc = 0 \ 96 slip->pos = 0;
97 slip->esc = 0;
97} 98}
98 99
99extern int slip_proto_read(int fd, void *buf, int len, 100extern int slip_proto_read(int fd, void *buf, int len,
diff --git a/arch/um/drivers/slip_kern.c b/arch/um/drivers/slip_kern.c
index 9a6f5c85f902..a62f5ef445cf 100644
--- a/arch/um/drivers/slip_kern.c
+++ b/arch/um/drivers/slip_kern.c
@@ -21,13 +21,14 @@ void slip_init(struct net_device *dev, void *data)
21 21
22 private = dev->priv; 22 private = dev->priv;
23 spri = (struct slip_data *) private->user; 23 spri = (struct slip_data *) private->user;
24 *spri = ((struct slip_data) 24
25 { .name = { '\0' }, 25 memset(spri->name, 0, sizeof(spri->name));
26 .addr = NULL, 26 spri->addr = NULL;
27 .gate_addr = init->gate_addr, 27 spri->gate_addr = init->gate_addr;
28 .slave = -1, 28 spri->slave = -1;
29 .slip = SLIP_PROTO_INIT, 29 spri->dev = dev;
30 .dev = dev }); 30
31 slip_proto_init(&spri->slip);
31 32
32 dev->init = NULL; 33 dev->init = NULL;
33 dev->header_cache_update = NULL; 34 dev->header_cache_update = NULL;
diff --git a/arch/um/drivers/slirp_kern.c b/arch/um/drivers/slirp_kern.c
index 9864d27afdbe..33d7982be5d3 100644
--- a/arch/um/drivers/slirp_kern.c
+++ b/arch/um/drivers/slirp_kern.c
@@ -21,12 +21,13 @@ void slirp_init(struct net_device *dev, void *data)
21 21
22 private = dev->priv; 22 private = dev->priv;
23 spri = (struct slirp_data *) private->user; 23 spri = (struct slirp_data *) private->user;
24 *spri = ((struct slirp_data) 24
25 { .argw = init->argw, 25 spri->argw = init->argw;
26 .pid = -1, 26 spri->pid = -1;
27 .slave = -1, 27 spri->slave = -1;
28 .slip = SLIP_PROTO_INIT, 28 spri->dev = dev;
29 .dev = dev }); 29
30 slip_proto_init(&spri->slip);
30 31
31 dev->init = NULL; 32 dev->init = NULL;
32 dev->hard_header_len = 0; 33 dev->hard_header_len = 0;
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index a32ef55cb244..a4d6415bc8c4 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -33,7 +33,7 @@ static struct tty_driver *ssl_driver;
33 33
34#define NR_PORTS 64 34#define NR_PORTS 64
35 35
36void ssl_announce(char *dev_name, int dev) 36static void ssl_announce(char *dev_name, int dev)
37{ 37{
38 printk(KERN_INFO "Serial line %d assigned device '%s'\n", dev, 38 printk(KERN_INFO "Serial line %d assigned device '%s'\n", dev,
39 dev_name); 39 dev_name);
@@ -98,7 +98,7 @@ static int ssl_remove(int n)
98 return line_remove(serial_lines, ARRAY_SIZE(serial_lines), n); 98 return line_remove(serial_lines, ARRAY_SIZE(serial_lines), n);
99} 99}
100 100
101int ssl_open(struct tty_struct *tty, struct file *filp) 101static int ssl_open(struct tty_struct *tty, struct file *filp)
102{ 102{
103 return line_open(serial_lines, tty); 103 return line_open(serial_lines, tty);
104} 104}
@@ -182,7 +182,7 @@ static struct console ssl_cons = {
182 .index = -1, 182 .index = -1,
183}; 183};
184 184
185int ssl_init(void) 185static int ssl_init(void)
186{ 186{
187 char *new_title; 187 char *new_title;
188 188
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index c649108a9e9f..07176d92e1c9 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -31,8 +31,6 @@ extern int timer_irq_inited;
31extern int jail; 31extern int jail;
32extern int nsyscalls; 32extern int nsyscalls;
33 33
34extern struct task_struct *idle_threads[NR_CPUS];
35
36#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK)) 34#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
37#define UML_ROUND_UP(addr) \ 35#define UML_ROUND_UP(addr) \
38 UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1) 36 UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
diff --git a/arch/um/include/registers.h b/arch/um/include/registers.h
index 4892e5fcef07..83b688ca198f 100644
--- a/arch/um/include/registers.h
+++ b/arch/um/include/registers.h
@@ -14,7 +14,7 @@ extern int restore_fp_registers(int pid, unsigned long *fp_regs);
14extern void save_registers(int pid, union uml_pt_regs *regs); 14extern void save_registers(int pid, union uml_pt_regs *regs);
15extern void restore_registers(int pid, union uml_pt_regs *regs); 15extern void restore_registers(int pid, union uml_pt_regs *regs);
16extern void init_registers(int pid); 16extern void init_registers(int pid);
17extern void get_safe_registers(unsigned long * regs); 17extern void get_safe_registers(unsigned long * regs, unsigned long * fp_regs);
18extern void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer); 18extern void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer);
19 19
20#endif 20#endif
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
index 569fe8b9b053..c264e1c05ab3 100644
--- a/arch/um/kernel/exec_kern.c
+++ b/arch/um/kernel/exec_kern.c
@@ -33,7 +33,7 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
33extern void log_exec(char **argv, void *tty); 33extern void log_exec(char **argv, void *tty);
34 34
35static long execve1(char *file, char __user * __user *argv, 35static long execve1(char *file, char __user * __user *argv,
36 char *__user __user *env) 36 char __user *__user *env)
37{ 37{
38 long error; 38 long error;
39 39
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index f3b583a878a6..544665e04513 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -265,7 +265,7 @@ int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem)
265 highmem_len = highmem_pages * sizeof(struct page); 265 highmem_len = highmem_pages * sizeof(struct page);
266 266
267 total_pages = phys_pages + iomem_pages + highmem_pages; 267 total_pages = phys_pages + iomem_pages + highmem_pages;
268 total_len = phys_len + iomem_pages + highmem_len; 268 total_len = phys_len + iomem_len + highmem_len;
269 269
270 if(kmalloc_ok){ 270 if(kmalloc_ok){
271 map = kmalloc(total_len, GFP_KERNEL); 271 map = kmalloc(total_len, GFP_KERNEL);
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index 6f1a3a288117..3ef73bf2e781 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -5,6 +5,7 @@
5 5
6#include "linux/module.h" 6#include "linux/module.h"
7#include "linux/sched.h" 7#include "linux/sched.h"
8#include "asm/smp.h"
8#include "user_util.h" 9#include "user_util.h"
9#include "kern_util.h" 10#include "kern_util.h"
10#include "kern.h" 11#include "kern.h"
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c
deleted file mode 100644
index eea1c9c4bb0f..000000000000
--- a/arch/um/kernel/skas/process.c
+++ /dev/null
@@ -1,569 +0,0 @@
1/*
2 * Copyright (C) 2002- 2004 Jeff Dike (jdike@addtoit.com)
3 * Licensed under the GPL
4 */
5
6#include <stdlib.h>
7#include <string.h>
8#include <unistd.h>
9#include <errno.h>
10#include <signal.h>
11#include <setjmp.h>
12#include <sched.h>
13#include <sys/wait.h>
14#include <sys/mman.h>
15#include <sys/user.h>
16#include <sys/time.h>
17#include <asm/unistd.h>
18#include <asm/types.h>
19#include "user.h"
20#include "ptrace_user.h"
21#include "sysdep/ptrace.h"
22#include "user_util.h"
23#include "kern_util.h"
24#include "skas.h"
25#include "stub-data.h"
26#include "mm_id.h"
27#include "sysdep/sigcontext.h"
28#include "sysdep/stub.h"
29#include "os.h"
30#include "proc_mm.h"
31#include "skas_ptrace.h"
32#include "chan_user.h"
33#include "registers.h"
34#include "mem.h"
35#include "uml-config.h"
36#include "process.h"
37
38int is_skas_winch(int pid, int fd, void *data)
39{
40 if(pid != os_getpgrp())
41 return(0);
42
43 register_winch_irq(-1, fd, -1, data);
44 return(1);
45}
46
47void wait_stub_done(int pid, int sig, char * fname)
48{
49 int n, status, err;
50
51 do {
52 if ( sig != -1 ) {
53 err = ptrace(PTRACE_CONT, pid, 0, sig);
54 if(err)
55 panic("%s : continue failed, errno = %d\n",
56 fname, errno);
57 }
58 sig = 0;
59
60 CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));
61 } while((n >= 0) && WIFSTOPPED(status) &&
62 ((WSTOPSIG(status) == SIGVTALRM) ||
63 /* running UML inside a detached screen can cause
64 * SIGWINCHes
65 */
66 (WSTOPSIG(status) == SIGWINCH)));
67
68 if((n < 0) || !WIFSTOPPED(status) ||
69 (WSTOPSIG(status) != SIGUSR1 && WSTOPSIG(status) != SIGTRAP)){
70 unsigned long regs[HOST_FRAME_SIZE];
71 if(ptrace(PTRACE_GETREGS, pid, 0, regs) < 0)
72 printk("Failed to get registers from stub, "
73 "errno = %d\n", errno);
74 else {
75 int i;
76
77 printk("Stub registers -\n");
78 for(i = 0; i < HOST_FRAME_SIZE; i++)
79 printk("\t%d - %lx\n", i, regs[i]);
80 }
81 panic("%s : failed to wait for SIGUSR1/SIGTRAP, "
82 "pid = %d, n = %d, errno = %d, status = 0x%x\n",
83 fname, pid, n, errno, status);
84 }
85}
86
87void get_skas_faultinfo(int pid, struct faultinfo * fi)
88{
89 int err;
90
91 if(ptrace_faultinfo){
92 err = ptrace(PTRACE_FAULTINFO, pid, 0, fi);
93 if(err)
94 panic("get_skas_faultinfo - PTRACE_FAULTINFO failed, "
95 "errno = %d\n", errno);
96
97 /* Special handling for i386, which has different structs */
98 if (sizeof(struct ptrace_faultinfo) < sizeof(struct faultinfo))
99 memset((char *)fi + sizeof(struct ptrace_faultinfo), 0,
100 sizeof(struct faultinfo) -
101 sizeof(struct ptrace_faultinfo));
102 }
103 else {
104 wait_stub_done(pid, SIGSEGV, "get_skas_faultinfo");
105
106 /* faultinfo is prepared by the stub-segv-handler at start of
107 * the stub stack page. We just have to copy it.
108 */
109 memcpy(fi, (void *)current_stub_stack(), sizeof(*fi));
110 }
111}
112
113static void handle_segv(int pid, union uml_pt_regs * regs)
114{
115 get_skas_faultinfo(pid, &regs->skas.faultinfo);
116 segv(regs->skas.faultinfo, 0, 1, NULL);
117}
118
119/*To use the same value of using_sysemu as the caller, ask it that value (in local_using_sysemu)*/
120static void handle_trap(int pid, union uml_pt_regs *regs, int local_using_sysemu)
121{
122 int err, status;
123
124 /* Mark this as a syscall */
125 UPT_SYSCALL_NR(regs) = PT_SYSCALL_NR(regs->skas.regs);
126
127 if (!local_using_sysemu)
128 {
129 err = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_NR_OFFSET, __NR_getpid);
130 if(err < 0)
131 panic("handle_trap - nullifying syscall failed errno = %d\n",
132 errno);
133
134 err = ptrace(PTRACE_SYSCALL, pid, 0, 0);
135 if(err < 0)
136 panic("handle_trap - continuing to end of syscall failed, "
137 "errno = %d\n", errno);
138
139 CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED));
140 if((err < 0) || !WIFSTOPPED(status) ||
141 (WSTOPSIG(status) != SIGTRAP + 0x80))
142 panic("handle_trap - failed to wait at end of syscall, "
143 "errno = %d, status = %d\n", errno, status);
144 }
145
146 handle_syscall(regs);
147}
148
149extern int __syscall_stub_start;
150int stub_code_fd = -1;
151__u64 stub_code_offset;
152
153static int userspace_tramp(void *stack)
154{
155 void *addr;
156
157 ptrace(PTRACE_TRACEME, 0, 0, 0);
158
159 init_new_thread_signals(1);
160 enable_timer();
161
162 if(!proc_mm){
163 /* This has a pte, but it can't be mapped in with the usual
164 * tlb_flush mechanism because this is part of that mechanism
165 */
166 addr = mmap64((void *) UML_CONFIG_STUB_CODE, page_size(),
167 PROT_EXEC, MAP_FIXED | MAP_PRIVATE,
168 stub_code_fd, stub_code_offset);
169 if(addr == MAP_FAILED){
170 printk("mapping stub code failed, errno = %d\n",
171 errno);
172 exit(1);
173 }
174
175 if(stack != NULL){
176 int fd;
177 __u64 offset;
178
179 fd = phys_mapping(to_phys(stack), &offset);
180 addr = mmap((void *) UML_CONFIG_STUB_DATA, page_size(),
181 PROT_READ | PROT_WRITE,
182 MAP_FIXED | MAP_SHARED, fd, offset);
183 if(addr == MAP_FAILED){
184 printk("mapping stub stack failed, "
185 "errno = %d\n", errno);
186 exit(1);
187 }
188 }
189 }
190 if(!ptrace_faultinfo){
191 unsigned long v = UML_CONFIG_STUB_CODE +
192 (unsigned long) stub_segv_handler -
193 (unsigned long) &__syscall_stub_start;
194
195 set_sigstack((void *) UML_CONFIG_STUB_DATA, page_size());
196 set_handler(SIGSEGV, (void *) v, SA_ONSTACK,
197 SIGIO, SIGWINCH, SIGALRM, SIGVTALRM,
198 SIGUSR1, -1);
199 }
200
201 os_stop_process(os_getpid());
202 return(0);
203}
204
205/* Each element set once, and only accessed by a single processor anyway */
206#undef NR_CPUS
207#define NR_CPUS 1
208int userspace_pid[NR_CPUS];
209
210int start_userspace(unsigned long stub_stack)
211{
212 void *stack;
213 unsigned long sp;
214 int pid, status, n, flags;
215
216 if ( stub_code_fd == -1 )
217 stub_code_fd = phys_mapping(to_phys(&__syscall_stub_start),
218 &stub_code_offset);
219
220 stack = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
221 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
222 if(stack == MAP_FAILED)
223 panic("start_userspace : mmap failed, errno = %d", errno);
224 sp = (unsigned long) stack + PAGE_SIZE - sizeof(void *);
225
226 flags = CLONE_FILES | SIGCHLD;
227 if(proc_mm) flags |= CLONE_VM;
228 pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);
229 if(pid < 0)
230 panic("start_userspace : clone failed, errno = %d", errno);
231
232 do {
233 CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));
234 if(n < 0)
235 panic("start_userspace : wait failed, errno = %d",
236 errno);
237 } while(WIFSTOPPED(status) && (WSTOPSIG(status) == SIGVTALRM));
238
239 if(!WIFSTOPPED(status) || (WSTOPSIG(status) != SIGSTOP))
240 panic("start_userspace : expected SIGSTOP, got status = %d",
241 status);
242
243 if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL, (void *)PTRACE_O_TRACESYSGOOD) < 0)
244 panic("start_userspace : PTRACE_SETOPTIONS failed, errno=%d\n",
245 errno);
246
247 if(munmap(stack, PAGE_SIZE) < 0)
248 panic("start_userspace : munmap failed, errno = %d\n", errno);
249
250 return(pid);
251}
252
253void userspace(union uml_pt_regs *regs)
254{
255 int err, status, op, pid = userspace_pid[0];
256 int local_using_sysemu; /*To prevent races if using_sysemu changes under us.*/
257
258 while(1){
259 restore_registers(pid, regs);
260
261 /* Now we set local_using_sysemu to be used for one loop */
262 local_using_sysemu = get_using_sysemu();
263
264 op = SELECT_PTRACE_OPERATION(local_using_sysemu, singlestepping(NULL));
265
266 err = ptrace(op, pid, 0, 0);
267 if(err)
268 panic("userspace - could not resume userspace process, "
269 "pid=%d, ptrace operation = %d, errno = %d\n",
270 op, errno);
271
272 CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED));
273 if(err < 0)
274 panic("userspace - waitpid failed, errno = %d\n",
275 errno);
276
277 regs->skas.is_user = 1;
278 save_registers(pid, regs);
279 UPT_SYSCALL_NR(regs) = -1; /* Assume: It's not a syscall */
280
281 if(WIFSTOPPED(status)){
282 switch(WSTOPSIG(status)){
283 case SIGSEGV:
284 if(PTRACE_FULL_FAULTINFO || !ptrace_faultinfo)
285 user_signal(SIGSEGV, regs, pid);
286 else handle_segv(pid, regs);
287 break;
288 case SIGTRAP + 0x80:
289 handle_trap(pid, regs, local_using_sysemu);
290 break;
291 case SIGTRAP:
292 relay_signal(SIGTRAP, regs);
293 break;
294 case SIGIO:
295 case SIGVTALRM:
296 case SIGILL:
297 case SIGBUS:
298 case SIGFPE:
299 case SIGWINCH:
300 user_signal(WSTOPSIG(status), regs, pid);
301 break;
302 default:
303 printk("userspace - child stopped with signal "
304 "%d\n", WSTOPSIG(status));
305 }
306 pid = userspace_pid[0];
307 interrupt_end();
308
309 /* Avoid -ERESTARTSYS handling in host */
310 PT_SYSCALL_NR(regs->skas.regs) = -1;
311 }
312 }
313}
314#define INIT_JMP_NEW_THREAD 0
315#define INIT_JMP_REMOVE_SIGSTACK 1
316#define INIT_JMP_CALLBACK 2
317#define INIT_JMP_HALT 3
318#define INIT_JMP_REBOOT 4
319
320
321int copy_context_skas0(unsigned long new_stack, int pid)
322{
323 int err;
324 unsigned long regs[MAX_REG_NR];
325 unsigned long current_stack = current_stub_stack();
326 struct stub_data *data = (struct stub_data *) current_stack;
327 struct stub_data *child_data = (struct stub_data *) new_stack;
328 __u64 new_offset;
329 int new_fd = phys_mapping(to_phys((void *)new_stack), &new_offset);
330
331 /* prepare offset and fd of child's stack as argument for parent's
332 * and child's mmap2 calls
333 */
334 *data = ((struct stub_data) { .offset = MMAP_OFFSET(new_offset),
335 .fd = new_fd,
336 .timer = ((struct itimerval)
337 { { 0, 1000000 / hz() },
338 { 0, 1000000 / hz() }})});
339 get_safe_registers(regs);
340
341 /* Set parent's instruction pointer to start of clone-stub */
342 regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE +
343 (unsigned long) stub_clone_handler -
344 (unsigned long) &__syscall_stub_start;
345 regs[REGS_SP_INDEX] = UML_CONFIG_STUB_DATA + PAGE_SIZE -
346 sizeof(void *);
347 err = ptrace_setregs(pid, regs);
348 if(err < 0)
349 panic("copy_context_skas0 : PTRACE_SETREGS failed, "
350 "pid = %d, errno = %d\n", pid, errno);
351
352 /* set a well known return code for detection of child write failure */
353 child_data->err = 12345678;
354
355 /* Wait, until parent has finished its work: read child's pid from
356 * parent's stack, and check, if bad result.
357 */
358 wait_stub_done(pid, 0, "copy_context_skas0");
359
360 pid = data->err;
361 if(pid < 0)
362 panic("copy_context_skas0 - stub-parent reports error %d\n",
363 pid);
364
365 /* Wait, until child has finished too: read child's result from
366 * child's stack and check it.
367 */
368 wait_stub_done(pid, -1, "copy_context_skas0");
369 if (child_data->err != UML_CONFIG_STUB_DATA)
370 panic("copy_context_skas0 - stub-child reports error %d\n",
371 child_data->err);
372
373 if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,
374 (void *)PTRACE_O_TRACESYSGOOD) < 0)
375 panic("copy_context_skas0 : PTRACE_SETOPTIONS failed, "
376 "errno = %d\n", errno);
377
378 return pid;
379}
380
381/*
382 * This is used only, if stub pages are needed, while proc_mm is
383 * availabl. Opening /proc/mm creates a new mm_context, which lacks
384 * the stub-pages. Thus, we map them using /proc/mm-fd
385 */
386void map_stub_pages(int fd, unsigned long code,
387 unsigned long data, unsigned long stack)
388{
389 struct proc_mm_op mmop;
390 int n;
391
392 mmop = ((struct proc_mm_op) { .op = MM_MMAP,
393 .u =
394 { .mmap =
395 { .addr = code,
396 .len = PAGE_SIZE,
397 .prot = PROT_EXEC,
398 .flags = MAP_FIXED | MAP_PRIVATE,
399 .fd = stub_code_fd,
400 .offset = stub_code_offset
401 } } });
402 n = os_write_file(fd, &mmop, sizeof(mmop));
403 if(n != sizeof(mmop))
404 panic("map_stub_pages : /proc/mm map for code failed, "
405 "err = %d\n", -n);
406
407 if ( stack ) {
408 __u64 map_offset;
409 int map_fd = phys_mapping(to_phys((void *)stack), &map_offset);
410 mmop = ((struct proc_mm_op)
411 { .op = MM_MMAP,
412 .u =
413 { .mmap =
414 { .addr = data,
415 .len = PAGE_SIZE,
416 .prot = PROT_READ | PROT_WRITE,
417 .flags = MAP_FIXED | MAP_SHARED,
418 .fd = map_fd,
419 .offset = map_offset
420 } } });
421 n = os_write_file(fd, &mmop, sizeof(mmop));
422 if(n != sizeof(mmop))
423 panic("map_stub_pages : /proc/mm map for data failed, "
424 "err = %d\n", -n);
425 }
426}
427
428void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
429 void (*handler)(int))
430{
431 unsigned long flags;
432 sigjmp_buf switch_buf, fork_buf;
433
434 *switch_buf_ptr = &switch_buf;
435 *fork_buf_ptr = &fork_buf;
436
437 /* Somewhat subtle - siglongjmp restores the signal mask before doing
438 * the longjmp. This means that when jumping from one stack to another
439 * when the target stack has interrupts enabled, an interrupt may occur
440 * on the source stack. This is bad when starting up a process because
441 * it's not supposed to get timer ticks until it has been scheduled.
442 * So, we disable interrupts around the sigsetjmp to ensure that
443 * they can't happen until we get back here where they are safe.
444 */
445 flags = get_signals();
446 block_signals();
447 if(sigsetjmp(fork_buf, 1) == 0)
448 new_thread_proc(stack, handler);
449
450 remove_sigstack();
451
452 set_signals(flags);
453}
454
455void thread_wait(void *sw, void *fb)
456{
457 sigjmp_buf buf, **switch_buf = sw, *fork_buf;
458
459 *switch_buf = &buf;
460 fork_buf = fb;
461 if(sigsetjmp(buf, 1) == 0)
462 siglongjmp(*fork_buf, INIT_JMP_REMOVE_SIGSTACK);
463}
464
465void switch_threads(void *me, void *next)
466{
467 sigjmp_buf my_buf, **me_ptr = me, *next_buf = next;
468
469 *me_ptr = &my_buf;
470 if(sigsetjmp(my_buf, 1) == 0)
471 siglongjmp(*next_buf, 1);
472}
473
474static sigjmp_buf initial_jmpbuf;
475
476/* XXX Make these percpu */
477static void (*cb_proc)(void *arg);
478static void *cb_arg;
479static sigjmp_buf *cb_back;
480
481int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr)
482{
483 sigjmp_buf **switch_buf = switch_buf_ptr;
484 int n;
485
486 set_handler(SIGWINCH, (__sighandler_t) sig_handler,
487 SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGALRM,
488 SIGVTALRM, -1);
489
490 *fork_buf_ptr = &initial_jmpbuf;
491 n = sigsetjmp(initial_jmpbuf, 1);
492 switch(n){
493 case INIT_JMP_NEW_THREAD:
494 new_thread_proc((void *) stack, new_thread_handler);
495 break;
496 case INIT_JMP_REMOVE_SIGSTACK:
497 remove_sigstack();
498 break;
499 case INIT_JMP_CALLBACK:
500 (*cb_proc)(cb_arg);
501 siglongjmp(*cb_back, 1);
502 break;
503 case INIT_JMP_HALT:
504 kmalloc_ok = 0;
505 return(0);
506 case INIT_JMP_REBOOT:
507 kmalloc_ok = 0;
508 return(1);
509 default:
510 panic("Bad sigsetjmp return in start_idle_thread - %d\n", n);
511 }
512 siglongjmp(**switch_buf, 1);
513}
514
515void initial_thread_cb_skas(void (*proc)(void *), void *arg)
516{
517 sigjmp_buf here;
518
519 cb_proc = proc;
520 cb_arg = arg;
521 cb_back = &here;
522
523 block_signals();
524 if(sigsetjmp(here, 1) == 0)
525 siglongjmp(initial_jmpbuf, INIT_JMP_CALLBACK);
526 unblock_signals();
527
528 cb_proc = NULL;
529 cb_arg = NULL;
530 cb_back = NULL;
531}
532
533void halt_skas(void)
534{
535 block_signals();
536 siglongjmp(initial_jmpbuf, INIT_JMP_HALT);
537}
538
539void reboot_skas(void)
540{
541 block_signals();
542 siglongjmp(initial_jmpbuf, INIT_JMP_REBOOT);
543}
544
545void switch_mm_skas(struct mm_id *mm_idp)
546{
547 int err;
548
549#warning need cpu pid in switch_mm_skas
550 if(proc_mm){
551 err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0,
552 mm_idp->u.mm_fd);
553 if(err)
554 panic("switch_mm_skas - PTRACE_SWITCH_MM failed, "
555 "errno = %d\n", errno);
556 }
557 else userspace_pid[0] = mm_idp->u.pid;
558}
559
560/*
561 * Overrides for Emacs so that we follow Linus's tabbing style.
562 * Emacs will notice this stuff at the end of the file and automatically
563 * adjust the settings for this buffer only. This must remain at the end
564 * of the file.
565 * ---------------------------------------------------------------------------
566 * Local variables:
567 * c-file-style: "linux"
568 * End:
569 */
diff --git a/arch/um/kernel/tt/syscall_kern.c b/arch/um/kernel/tt/syscall_kern.c
index 3d29c90514cc..3fda9a03c59a 100644
--- a/arch/um/kernel/tt/syscall_kern.c
+++ b/arch/um/kernel/tt/syscall_kern.c
@@ -23,16 +23,20 @@ void syscall_handler_tt(int sig, struct pt_regs *regs)
23 int syscall; 23 int syscall;
24#ifdef CONFIG_SYSCALL_DEBUG 24#ifdef CONFIG_SYSCALL_DEBUG
25 int index; 25 int index;
26 index = record_syscall_start(syscall);
27#endif 26#endif
28 sc = UPT_SC(&regs->regs); 27 sc = UPT_SC(&regs->regs);
29 SC_START_SYSCALL(sc); 28 SC_START_SYSCALL(sc);
30 29
30 syscall = UPT_SYSCALL_NR(&regs->regs);
31
32#ifdef CONFIG_SYSCALL_DEBUG
33 index = record_syscall_start(syscall);
34#endif
35
31 syscall_trace(&regs->regs, 0); 36 syscall_trace(&regs->regs, 0);
32 37
33 current->thread.nsyscalls++; 38 current->thread.nsyscalls++;
34 nsyscalls++; 39 nsyscalls++;
35 syscall = UPT_SYSCALL_NR(&regs->regs);
36 40
37 if((syscall >= NR_syscalls) || (syscall < 0)) 41 if((syscall >= NR_syscalls) || (syscall < 0))
38 result = -ENOSYS; 42 result = -ENOSYS;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index e2d3ca445ef5..27cdf9164422 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -193,6 +193,24 @@ __uml_setup("root=", uml_root_setup,
193" root=/dev/ubd5\n\n" 193" root=/dev/ubd5\n\n"
194); 194);
195 195
196#ifndef CONFIG_MODE_TT
197
198static int __init no_skas_debug_setup(char *line, int *add)
199{
200 printf("'debug' is not necessary to gdb UML in skas mode - run \n");
201 printf("'gdb linux' and disable CONFIG_CMDLINE_ON_HOST if gdb \n");
202 printf("doesn't work as expected\n");
203
204 return 0;
205}
206
207__uml_setup("debug", no_skas_debug_setup,
208"debug\n"
209" this flag is not needed to run gdb on UML in skas mode\n\n"
210);
211
212#endif
213
196#ifdef CONFIG_SMP 214#ifdef CONFIG_SMP
197static int __init uml_ncpus_setup(char *line, int *add) 215static int __init uml_ncpus_setup(char *line, int *add)
198{ 216{
diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c
index 52945338b64d..87c3aa0252db 100644
--- a/arch/um/os-Linux/drivers/tuntap_user.c
+++ b/arch/um/os-Linux/drivers/tuntap_user.c
@@ -122,6 +122,7 @@ static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote,
122 return(-EINVAL); 122 return(-EINVAL);
123 } 123 }
124 *fd_out = ((int *) CMSG_DATA(cmsg))[0]; 124 *fd_out = ((int *) CMSG_DATA(cmsg))[0];
125 os_set_exec_close(*fd_out, 1);
125 return(0); 126 return(0);
126} 127}
127 128
@@ -137,7 +138,8 @@ static int tuntap_open(void *data)
137 return(err); 138 return(err);
138 139
139 if(pri->fixed_config){ 140 if(pri->fixed_config){
140 pri->fd = os_open_file("/dev/net/tun", of_rdwr(OPENFLAGS()), 0); 141 pri->fd = os_open_file("/dev/net/tun",
142 of_cloexec(of_rdwr(OPENFLAGS())), 0);
141 if(pri->fd < 0){ 143 if(pri->fd < 0){
142 printk("Failed to open /dev/net/tun, err = %d\n", 144 printk("Failed to open /dev/net/tun, err = %d\n",
143 -pri->fd); 145 -pri->fd);
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 9890e9090f58..fbb080c2fc26 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -60,7 +60,7 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
60 60
61 multi_count++; 61 multi_count++;
62 62
63 get_safe_registers(regs); 63 get_safe_registers(regs, NULL);
64 regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + 64 regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE +
65 ((unsigned long) &batch_syscall_stub - 65 ((unsigned long) &batch_syscall_stub -
66 (unsigned long) &__syscall_stub_start); 66 (unsigned long) &__syscall_stub_start);
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 120a21c5883f..bbf34cb91ce1 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -310,16 +310,12 @@ void userspace(union uml_pt_regs *regs)
310 } 310 }
311 } 311 }
312} 312}
313#define INIT_JMP_NEW_THREAD 0
314#define INIT_JMP_REMOVE_SIGSTACK 1
315#define INIT_JMP_CALLBACK 2
316#define INIT_JMP_HALT 3
317#define INIT_JMP_REBOOT 4
318 313
319int copy_context_skas0(unsigned long new_stack, int pid) 314int copy_context_skas0(unsigned long new_stack, int pid)
320{ 315{
321 int err; 316 int err;
322 unsigned long regs[MAX_REG_NR]; 317 unsigned long regs[HOST_FRAME_SIZE];
318 unsigned long fp_regs[HOST_FP_SIZE];
323 unsigned long current_stack = current_stub_stack(); 319 unsigned long current_stack = current_stub_stack();
324 struct stub_data *data = (struct stub_data *) current_stack; 320 struct stub_data *data = (struct stub_data *) current_stack;
325 struct stub_data *child_data = (struct stub_data *) new_stack; 321 struct stub_data *child_data = (struct stub_data *) new_stack;
@@ -334,7 +330,7 @@ int copy_context_skas0(unsigned long new_stack, int pid)
334 .timer = ((struct itimerval) 330 .timer = ((struct itimerval)
335 { { 0, 1000000 / hz() }, 331 { { 0, 1000000 / hz() },
336 { 0, 1000000 / hz() }})}); 332 { 0, 1000000 / hz() }})});
337 get_safe_registers(regs); 333 get_safe_registers(regs, fp_regs);
338 334
339 /* Set parent's instruction pointer to start of clone-stub */ 335 /* Set parent's instruction pointer to start of clone-stub */
340 regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + 336 regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE +
@@ -350,6 +346,11 @@ int copy_context_skas0(unsigned long new_stack, int pid)
350 panic("copy_context_skas0 : PTRACE_SETREGS failed, " 346 panic("copy_context_skas0 : PTRACE_SETREGS failed, "
351 "pid = %d, errno = %d\n", pid, errno); 347 "pid = %d, errno = %d\n", pid, errno);
352 348
349 err = ptrace_setfpregs(pid, fp_regs);
350 if(err < 0)
351 panic("copy_context_skas0 : PTRACE_SETFPREGS failed, "
352 "pid = %d, errno = %d\n", pid, errno);
353
353 /* set a well known return code for detection of child write failure */ 354 /* set a well known return code for detection of child write failure */
354 child_data->err = 12345678; 355 child_data->err = 12345678;
355 356
@@ -457,6 +458,12 @@ void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
457 set_signals(flags); 458 set_signals(flags);
458} 459}
459 460
461#define INIT_JMP_NEW_THREAD 0
462#define INIT_JMP_REMOVE_SIGSTACK 1
463#define INIT_JMP_CALLBACK 2
464#define INIT_JMP_HALT 3
465#define INIT_JMP_REBOOT 4
466
460void thread_wait(void *sw, void *fb) 467void thread_wait(void *sw, void *fb)
461{ 468{
462 sigjmp_buf buf, **switch_buf = sw, *fork_buf; 469 sigjmp_buf buf, **switch_buf = sw, *fork_buf;
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6c5b17ed59e1..829d6b0d8b02 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -49,6 +49,7 @@ static int ptrace_child(void *arg)
49 int pid = os_getpid(), ppid = getppid(); 49 int pid = os_getpid(), ppid = getppid();
50 int sc_result; 50 int sc_result;
51 51
52 change_sig(SIGWINCH, 0);
52 if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){ 53 if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
53 perror("ptrace"); 54 perror("ptrace");
54 os_kill_process(pid, 0); 55 os_kill_process(pid, 0);
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
index aee4812333c6..7a6f6b99ceff 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-i386/registers.c
@@ -122,9 +122,12 @@ void init_registers(int pid)
122 err); 122 err);
123} 123}
124 124
125void get_safe_registers(unsigned long *regs) 125void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
126{ 126{
127 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long)); 127 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
128 if(fp_regs != NULL)
129 memcpy(fp_regs, exec_fp_regs,
130 HOST_FP_SIZE * sizeof(unsigned long));
128} 131}
129 132
130void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer) 133void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index 4b638dfb52b0..001941fa1a1e 100644
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -70,9 +70,12 @@ void init_registers(int pid)
70 err); 70 err);
71} 71}
72 72
73void get_safe_registers(unsigned long *regs) 73void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
74{ 74{
75 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long)); 75 memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
76 if(fp_regs != NULL)
77 memcpy(fp_regs, exec_fp_regs,
78 HOST_FP_SIZE * sizeof(unsigned long));
76} 79}
77 80
78void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer) 81void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index 0cdfd4481d5e..1fa09a79a10b 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -16,7 +16,6 @@
16#include "choose-mode.h" 16#include "choose-mode.h"
17#include "kern.h" 17#include "kern.h"
18#include "mode_kern.h" 18#include "mode_kern.h"
19#include "proc_mm.h"
20#include "os.h" 19#include "os.h"
21 20
22extern int modify_ldt(int func, void *ptr, unsigned long bytecount); 21extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
@@ -90,6 +89,7 @@ out:
90#include "skas.h" 89#include "skas.h"
91#include "skas_ptrace.h" 90#include "skas_ptrace.h"
92#include "asm/mmu_context.h" 91#include "asm/mmu_context.h"
92#include "proc_mm.h"
93 93
94long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc, 94long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc,
95 void **addr, int done) 95 void **addr, int done)
diff --git a/arch/um/sys-x86_64/ptrace_user.c b/arch/um/sys-x86_64/ptrace_user.c
index 12e404c6fa46..b5f9c33e311e 100644
--- a/arch/um/sys-x86_64/ptrace_user.c
+++ b/arch/um/sys-x86_64/ptrace_user.c
@@ -24,6 +24,13 @@ int ptrace_setregs(long pid, unsigned long *regs)
24 return(0); 24 return(0);
25} 25}
26 26
27int ptrace_setfpregs(long pid, unsigned long *regs)
28{
29 if (ptrace(PTRACE_SETFPREGS, pid, 0, regs) < 0)
30 return -errno;
31 return 0;
32}
33
27void ptrace_pokeuser(unsigned long addr, unsigned long data) 34void ptrace_pokeuser(unsigned long addr, unsigned long data)
28{ 35{
29 panic("ptrace_pokeuser"); 36 panic("ptrace_pokeuser");
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
index 5a585bfbb8c2..7bd54a921cf7 100644
--- a/arch/um/sys-x86_64/user-offsets.c
+++ b/arch/um/sys-x86_64/user-offsets.c
@@ -57,7 +57,7 @@ void foo(void)
57#endif 57#endif
58 58
59 DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE); 59 DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE);
60 DEFINE(HOST_FP_SIZE, 0); 60 DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
61 DEFINE(HOST_XFP_SIZE, 0); 61 DEFINE(HOST_XFP_SIZE, 0);
62 DEFINE_LONGS(HOST_RBX, RBX); 62 DEFINE_LONGS(HOST_RBX, RBX);
63 DEFINE_LONGS(HOST_RCX, RCX); 63 DEFINE_LONGS(HOST_RCX, RCX);
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-02 02:35:50 -0400