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-rw-r--r--arch/um/include/shared/arch.h2
-rw-r--r--arch/um/include/shared/as-layout.h2
-rw-r--r--arch/um/include/shared/common-offsets.h4
-rw-r--r--arch/um/include/shared/irq_user.h5
-rw-r--r--arch/um/include/shared/kern_util.h12
-rw-r--r--arch/um/include/shared/mem_user.h1
-rw-r--r--arch/um/include/shared/net_kern.h69
-rw-r--r--arch/um/include/shared/net_user.h52
-rw-r--r--arch/um/include/shared/os.h12
-rw-r--r--arch/um/include/shared/sigio.h1
-rw-r--r--arch/um/include/shared/skas/mm_id.h9
-rw-r--r--arch/um/include/shared/skas/skas.h1
-rw-r--r--arch/um/include/shared/skas/stub-data.h20
13 files changed, 56 insertions, 134 deletions
diff --git a/arch/um/include/shared/arch.h b/arch/um/include/shared/arch.h
index 880ee42a3329..cc398a21ad96 100644
--- a/arch/um/include/shared/arch.h
+++ b/arch/um/include/shared/arch.h
@@ -12,4 +12,6 @@ extern void arch_check_bugs(void);
extern int arch_fixup(unsigned long address, struct uml_pt_regs *regs);
extern void arch_examine_signal(int sig, struct uml_pt_regs *regs);
+void mc_set_rip(void *_mc, void *target);
+
#endif
diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index ea65f151bf48..4f44dcce8a7c 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -50,7 +50,7 @@ extern int linux_main(int argc, char **argv, char **envp);
extern void uml_finishsetup(void);
struct siginfo;
-extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *);
+extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *, void *);
#endif
diff --git a/arch/um/include/shared/common-offsets.h b/arch/um/include/shared/common-offsets.h
index 73f3a4792ed8..8ca66a1918c3 100644
--- a/arch/um/include/shared/common-offsets.h
+++ b/arch/um/include/shared/common-offsets.h
@@ -14,3 +14,7 @@ DEFINE(UM_THREAD_SIZE, THREAD_SIZE);
DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
DEFINE(UM_NSEC_PER_USEC, NSEC_PER_USEC);
+
+DEFINE(UM_KERN_GDT_ENTRY_TLS_ENTRIES, GDT_ENTRY_TLS_ENTRIES);
+
+DEFINE(UM_SECCOMP_ARCH_NATIVE, SECCOMP_ARCH_NATIVE);
diff --git a/arch/um/include/shared/irq_user.h b/arch/um/include/shared/irq_user.h
index da0f6eea30d0..746abc24a5d5 100644
--- a/arch/um/include/shared/irq_user.h
+++ b/arch/um/include/shared/irq_user.h
@@ -15,7 +15,10 @@ enum um_irq_type {
};
struct siginfo;
-extern void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
+extern void sigio_handler(int sig, struct siginfo *unused_si,
+ struct uml_pt_regs *regs, void *mc);
+extern void sigchld_handler(int sig, struct siginfo *unused_si,
+ struct uml_pt_regs *regs, void *mc);
void sigio_run_timetravel_handlers(void);
extern void free_irq_by_fd(int fd);
extern void deactivate_fd(int fd, int irqnum);
diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h
index f21dc8517538..00ca3e12fd9a 100644
--- a/arch/um/include/shared/kern_util.h
+++ b/arch/um/include/shared/kern_util.h
@@ -24,10 +24,12 @@ extern void free_stack(unsigned long stack, int order);
struct pt_regs;
extern void do_signal(struct pt_regs *regs);
extern void interrupt_end(void);
-extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
+extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs,
+ void *mc);
extern unsigned long segv(struct faultinfo fi, unsigned long ip,
- int is_user, struct uml_pt_regs *regs);
+ int is_user, struct uml_pt_regs *regs,
+ void *mc);
extern int handle_page_fault(unsigned long address, unsigned long ip,
int is_write, int is_user, int *code_out);
@@ -59,8 +61,10 @@ extern unsigned long from_irq_stack(int nested);
extern int singlestepping(void);
-extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
-extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
+extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs,
+ void *mc);
+extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs,
+ void *mc);
extern void fatal_sigsegv(void) __attribute__ ((noreturn));
void um_idle_sleep(void);
diff --git a/arch/um/include/shared/mem_user.h b/arch/um/include/shared/mem_user.h
index adfa08062f88..d4727efcf23d 100644
--- a/arch/um/include/shared/mem_user.h
+++ b/arch/um/include/shared/mem_user.h
@@ -47,7 +47,6 @@ extern int iomem_size;
#define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1))
extern unsigned long find_iomem(char *driver, unsigned long *len_out);
-extern void mem_total_pages(unsigned long physmem, unsigned long iomem);
extern void setup_physmem(unsigned long start, unsigned long usable,
unsigned long len);
extern void map_memory(unsigned long virt, unsigned long phys,
diff --git a/arch/um/include/shared/net_kern.h b/arch/um/include/shared/net_kern.h
deleted file mode 100644
index 67b2e9a1f2e5..000000000000
--- a/arch/um/include/shared/net_kern.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- */
-
-#ifndef __UM_NET_KERN_H
-#define __UM_NET_KERN_H
-
-#include <linux/netdevice.h>
-#include <linux/platform_device.h>
-#include <linux/skbuff.h>
-#include <linux/socket.h>
-#include <linux/list.h>
-#include <linux/workqueue.h>
-
-struct uml_net {
- struct list_head list;
- struct net_device *dev;
- struct platform_device pdev;
- int index;
-};
-
-struct uml_net_private {
- struct list_head list;
- spinlock_t lock;
- struct net_device *dev;
- struct timer_list tl;
-
- struct work_struct work;
- int fd;
- unsigned char mac[ETH_ALEN];
- int max_packet;
- unsigned short (*protocol)(struct sk_buff *);
- int (*open)(void *);
- void (*close)(int, void *);
- void (*remove)(void *);
- int (*read)(int, struct sk_buff *skb, struct uml_net_private *);
- int (*write)(int, struct sk_buff *skb, struct uml_net_private *);
-
- void (*add_address)(unsigned char *, unsigned char *, void *);
- void (*delete_address)(unsigned char *, unsigned char *, void *);
- char user[];
-};
-
-struct net_kern_info {
- void (*init)(struct net_device *, void *);
- unsigned short (*protocol)(struct sk_buff *);
- int (*read)(int, struct sk_buff *skb, struct uml_net_private *);
- int (*write)(int, struct sk_buff *skb, struct uml_net_private *);
-};
-
-struct transport {
- struct list_head list;
- const char *name;
- int (* const setup)(char *, char **, void *);
- const struct net_user_info *user;
- const struct net_kern_info *kern;
- const int private_size;
- const int setup_size;
-};
-
-extern int tap_setup_common(char *str, char *type, char **dev_name,
- char **mac_out, char **gate_addr);
-extern void register_transport(struct transport *new);
-extern unsigned short eth_protocol(struct sk_buff *skb);
-extern void uml_net_setup_etheraddr(struct net_device *dev, char *str);
-
-
-#endif
diff --git a/arch/um/include/shared/net_user.h b/arch/um/include/shared/net_user.h
deleted file mode 100644
index ba92a4d93531..000000000000
--- a/arch/um/include/shared/net_user.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- */
-
-#ifndef __UM_NET_USER_H__
-#define __UM_NET_USER_H__
-
-#define ETH_ADDR_LEN (6)
-#define ETH_HEADER_ETHERTAP (16)
-#define ETH_HEADER_OTHER (26) /* 14 for ethernet + VLAN + MPLS for crazy people */
-#define ETH_MAX_PACKET (1500)
-
-#define UML_NET_VERSION (4)
-
-struct net_user_info {
- int (*init)(void *, void *);
- int (*open)(void *);
- void (*close)(int, void *);
- void (*remove)(void *);
- void (*add_address)(unsigned char *, unsigned char *, void *);
- void (*delete_address)(unsigned char *, unsigned char *, void *);
- int max_packet;
- int mtu;
-};
-
-extern void iter_addresses(void *d, void (*cb)(unsigned char *,
- unsigned char *, void *),
- void *arg);
-
-extern void *get_output_buffer(int *len_out);
-extern void free_output_buffer(void *buffer);
-
-extern int tap_open_common(void *dev, char *gate_addr);
-extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr);
-
-extern void read_output(int fd, char *output_out, int len);
-
-extern int net_read(int fd, void *buf, int len);
-extern int net_recvfrom(int fd, void *buf, int len);
-extern int net_write(int fd, void *buf, int len);
-extern int net_send(int fd, void *buf, int len);
-extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len);
-
-extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg);
-extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg);
-
-extern char *split_if_spec(char *str, ...);
-
-extern int dev_netmask(void *d, void *m);
-
-#endif
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 5babad8c5f75..b35cc8ce333b 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -143,7 +143,6 @@ extern int os_access(const char *file, int mode);
extern int os_set_exec_close(int fd);
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
extern int os_get_ifname(int fd, char *namebuf);
-extern int os_set_slip(int fd);
extern int os_mode_fd(int fd, int mode);
extern int os_seek_file(int fd, unsigned long long offset);
@@ -198,6 +197,7 @@ extern int create_mem_file(unsigned long long len);
extern void report_enomem(void);
/* process.c */
+pid_t os_reap_child(void);
extern void os_alarm_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_kill_ptraced_process(int pid, int reap_child);
@@ -213,7 +213,6 @@ extern int os_protect_memory(void *addr, unsigned long len,
extern int os_unmap_memory(void *addr, int len);
extern int os_drop_memory(void *addr, int length);
extern int can_drop_memory(void);
-extern int os_mincore(void *addr, unsigned long len);
void os_set_pdeathsig(void);
@@ -225,6 +224,11 @@ extern int run_helper_thread(int (*proc)(void *), void *arg,
unsigned int flags, unsigned long *stack_out);
extern int helper_wait(int pid);
+struct os_helper_thread;
+int os_run_helper_thread(struct os_helper_thread **td_out,
+ void *(*routine)(void *), void *arg);
+void os_kill_helper_thread(struct os_helper_thread *td);
+void os_fix_helper_thread_signals(void);
/* umid.c */
extern int umid_file_name(char *name, char *buf, int len);
@@ -282,7 +286,7 @@ int unmap(struct mm_id *mm_idp, unsigned long addr, unsigned long len);
/* skas/process.c */
extern int is_skas_winch(int pid, int fd, void *data);
-extern int start_userspace(unsigned long stub_stack);
+extern int start_userspace(struct mm_id *mm_id);
extern void userspace(struct uml_pt_regs *regs);
extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
extern void switch_threads(jmp_buf *me, jmp_buf *you);
@@ -310,7 +314,7 @@ extern void um_irqs_resume(void);
extern int add_sigio_fd(int fd);
extern int ignore_sigio_fd(int fd);
extern void maybe_sigio_broken(int fd);
-extern void sigio_broken(int fd);
+extern void sigio_broken(void);
/*
* unlocked versions for IRQ controller code.
*
diff --git a/arch/um/include/shared/sigio.h b/arch/um/include/shared/sigio.h
index e60c8b227844..c6c2edce1f6d 100644
--- a/arch/um/include/shared/sigio.h
+++ b/arch/um/include/shared/sigio.h
@@ -6,7 +6,6 @@
#ifndef __SIGIO_H__
#define __SIGIO_H__
-extern int write_sigio_irq(int fd);
extern void sigio_lock(void);
extern void sigio_unlock(void);
diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h
index 140388c282f6..89df9a55fbea 100644
--- a/arch/um/include/shared/skas/mm_id.h
+++ b/arch/um/include/shared/skas/mm_id.h
@@ -6,12 +6,21 @@
#ifndef __MM_ID_H
#define __MM_ID_H
+#define STUB_MAX_FDS 4
+
struct mm_id {
int pid;
unsigned long stack;
int syscall_data_len;
+
+ /* Only used with SECCOMP mode */
+ int sock;
+ int syscall_fd_num;
+ int syscall_fd_map[STUB_MAX_FDS];
};
void __switch_mm(struct mm_id *mm_idp);
+void notify_mm_kill(int pid);
+
#endif
diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h
index 85c50122ab98..7d1de4cab551 100644
--- a/arch/um/include/shared/skas/skas.h
+++ b/arch/um/include/shared/skas/skas.h
@@ -8,6 +8,7 @@
#include <sysdep/ptrace.h>
+extern int using_seccomp;
extern int userspace_pid[];
extern void new_thread_handler(void);
diff --git a/arch/um/include/shared/skas/stub-data.h b/arch/um/include/shared/skas/stub-data.h
index 81a4cace032c..c261a77a32f6 100644
--- a/arch/um/include/shared/skas/stub-data.h
+++ b/arch/um/include/shared/skas/stub-data.h
@@ -11,8 +11,15 @@
#include <linux/compiler_types.h>
#include <as-layout.h>
#include <sysdep/tls.h>
+#include <sysdep/stub-data.h>
+#include <mm_id.h>
+
+#define FUTEX_IN_CHILD 0
+#define FUTEX_IN_KERN 1
struct stub_init_data {
+ int seccomp;
+
unsigned long stub_start;
int stub_code_fd;
@@ -20,7 +27,8 @@ struct stub_init_data {
int stub_data_fd;
unsigned long stub_data_offset;
- unsigned long segv_handler;
+ unsigned long signal_handler;
+ unsigned long signal_restorer;
};
#define STUB_NEXT_SYSCALL(s) \
@@ -52,6 +60,16 @@ struct stub_data {
/* 128 leaves enough room for additional fields in the struct */
struct stub_syscall syscall_data[(UM_KERN_PAGE_SIZE - 128) / sizeof(struct stub_syscall)] __aligned(16);
+ /* data shared with signal handler (only used in seccomp mode) */
+ short restart_wait;
+ unsigned int futex;
+ int signal;
+ unsigned short si_offset;
+ unsigned short mctx_offset;
+
+ /* seccomp architecture specific state restore */
+ struct stub_data_arch arch_data;
+
/* Stack for our signal handlers and for calling into . */
unsigned char sigstack[UM_KERN_PAGE_SIZE] __aligned(UM_KERN_PAGE_SIZE);
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-07-03 11:06:45 +0300