summaryrefslogtreecommitdiffstats
path: root/arch/um/include/shared
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/include/shared')
-rw-r--r--arch/um/include/shared/arch.h2
-rw-r--r--arch/um/include/shared/as-layout.h15
-rw-r--r--arch/um/include/shared/common-offsets.h20
-rw-r--r--arch/um/include/shared/irq_user.h3
-rw-r--r--arch/um/include/shared/kern_util.h17
-rw-r--r--arch/um/include/shared/mem_user.h4
-rw-r--r--arch/um/include/shared/os.h52
-rw-r--r--arch/um/include/shared/registers.h6
-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.h4
-rw-r--r--arch/um/include/shared/skas/stub-data.h46
-rw-r--r--arch/um/include/shared/timetravel.h14
-rw-r--r--arch/um/include/shared/um_malloc.h5
-rw-r--r--arch/um/include/shared/user.h10
15 files changed, 120 insertions, 88 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 9ec3015bc5e2..4f44dcce8a7c 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -23,37 +23,34 @@
#define STUB_START stub_start
#define STUB_CODE STUB_START
#define STUB_DATA (STUB_CODE + UM_KERN_PAGE_SIZE)
-#define STUB_DATA_PAGES 1 /* must be a power of two */
+#define STUB_DATA_PAGES 2 /* must be a power of two */
#define STUB_END (STUB_DATA + STUB_DATA_PAGES * UM_KERN_PAGE_SIZE)
#ifndef __ASSEMBLY__
#include <sysdep/ptrace.h>
-struct cpu_task {
- int pid;
- void *task;
-};
+struct task_struct;
+extern struct task_struct *cpu_tasks[];
-extern struct cpu_task cpu_tasks[];
+extern unsigned long long physmem_size;
extern unsigned long high_physmem;
extern unsigned long uml_physmem;
extern unsigned long uml_reserved;
extern unsigned long end_vm;
extern unsigned long start_vm;
-extern unsigned long long highmem;
extern unsigned long brk_start;
extern unsigned long host_task_size;
extern unsigned long stub_start;
-extern int linux_main(int argc, char **argv);
+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 96195483fbd0..73f3a4792ed8 100644
--- a/arch/um/include/shared/common-offsets.h
+++ b/arch/um/include/shared/common-offsets.h
@@ -1,13 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* for use by sys-$SUBARCH/kernel-offsets.c */
-#include <stub-data.h>
DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE);
DEFINE(UM_KERN_PAGE_MASK, PAGE_MASK);
DEFINE(UM_KERN_PAGE_SHIFT, PAGE_SHIFT);
-DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
DEFINE(UM_GFP_KERNEL, GFP_KERNEL);
DEFINE(UM_GFP_ATOMIC, GFP_ATOMIC);
@@ -16,21 +14,3 @@ DEFINE(UM_THREAD_SIZE, THREAD_SIZE);
DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
DEFINE(UM_NSEC_PER_USEC, NSEC_PER_USEC);
-
-#ifdef CONFIG_PRINTK
-DEFINE(UML_CONFIG_PRINTK, CONFIG_PRINTK);
-#endif
-#ifdef CONFIG_UML_X86
-DEFINE(UML_CONFIG_UML_X86, CONFIG_UML_X86);
-#endif
-#ifdef CONFIG_64BIT
-DEFINE(UML_CONFIG_64BIT, CONFIG_64BIT);
-#endif
-#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT
-DEFINE(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT, CONFIG_UML_TIME_TRAVEL_SUPPORT);
-#endif
-
-/* for stub */
-DEFINE(UML_STUB_FIELD_OFFSET, offsetof(struct stub_data, offset));
-DEFINE(UML_STUB_FIELD_CHILD_ERR, offsetof(struct stub_data, child_err));
-DEFINE(UML_STUB_FIELD_FD, offsetof(struct stub_data, fd));
diff --git a/arch/um/include/shared/irq_user.h b/arch/um/include/shared/irq_user.h
index da0f6eea30d0..88835b52ae2b 100644
--- a/arch/um/include/shared/irq_user.h
+++ b/arch/um/include/shared/irq_user.h
@@ -15,7 +15,8 @@ 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);
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 789b83013f35..00ca3e12fd9a 100644
--- a/arch/um/include/shared/kern_util.h
+++ b/arch/um/include/shared/kern_util.h
@@ -13,7 +13,6 @@ struct siginfo;
extern int uml_exitcode;
-extern int ncpus;
extern int kmalloc_ok;
#define UML_ROUND_UP(addr) \
@@ -25,10 +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);
@@ -41,6 +42,7 @@ extern void uml_pm_wake(void);
extern int start_uml(void);
extern void paging_init(void);
+extern int parse_iomem(char *str, int *add);
extern void uml_cleanup(void);
extern void do_uml_exitcalls(void);
@@ -59,11 +61,14 @@ 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 bus_handler(int sig, struct siginfo *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);
+void kasan_map_memory(void *start, size_t len);
+
#endif
diff --git a/arch/um/include/shared/mem_user.h b/arch/um/include/shared/mem_user.h
index 11a723a58545..d4727efcf23d 100644
--- a/arch/um/include/shared/mem_user.h
+++ b/arch/um/include/shared/mem_user.h
@@ -47,10 +47,8 @@ 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,
- unsigned long highmem);
extern void setup_physmem(unsigned long start, unsigned long usable,
- unsigned long len, unsigned long long highmem);
+ unsigned long len);
extern void map_memory(unsigned long virt, unsigned long phys,
unsigned long len, int r, int w, int x);
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index aff8906304ea..152a60080d5b 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -145,7 +145,6 @@ 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_fsync_file(int fd);
extern int os_seek_file(int fd, unsigned long long offset);
extern int os_open_file(const char *file, struct openflags flags, int mode);
@@ -163,8 +162,10 @@ extern int os_set_fd_block(int fd, int blocking);
extern int os_accept_connection(int fd);
extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
extern int os_shutdown_socket(int fd, int r, int w);
+extern int os_dup_file(int fd);
extern void os_close_file(int fd);
-extern int os_rcv_fd(int fd, int *helper_pid_out);
+ssize_t os_rcv_fd_msg(int fd, int *fds, unsigned int n_fds,
+ void *data, size_t data_len);
extern int os_connect_socket(const char *name);
extern int os_file_type(char *file);
extern int os_file_mode(const char *file, struct openflags *mode_out);
@@ -179,6 +180,8 @@ extern int os_eventfd(unsigned int initval, int flags);
extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len,
const int *fds, unsigned int fds_num);
int os_poll(unsigned int n, const int *fds);
+void *os_mmap_rw_shared(int fd, size_t size);
+void *os_mremap_rw_shared(void *old_addr, size_t old_size, size_t new_size);
/* start_up.c */
extern void os_early_checks(void);
@@ -191,16 +194,15 @@ extern void get_host_cpu_features(
/* mem.c */
extern int create_mem_file(unsigned long long len);
+/* tlb.c */
+extern void report_enomem(void);
+
/* process.c */
-extern unsigned long os_process_pc(int pid);
-extern int os_process_parent(int pid);
extern void os_alarm_process(int pid);
-extern void os_stop_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_kill_ptraced_process(int pid, int reap_child);
extern int os_getpid(void);
-extern int os_getpgrp(void);
extern void init_new_thread_signals(void);
@@ -211,7 +213,8 @@ 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);
/* execvp.c */
extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
@@ -221,6 +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);
@@ -237,7 +245,6 @@ extern void block_signals(void);
extern void unblock_signals(void);
extern int um_set_signals(int enable);
extern int um_set_signals_trace(int enable);
-extern int os_is_signal_stack(void);
extern void deliver_alarm(void);
extern void register_pm_wake_signal(void);
extern void block_signals_hard(void);
@@ -268,25 +275,19 @@ extern long long os_persistent_clock_emulation(void);
extern long long os_nsecs(void);
/* skas/mem.c */
-extern long run_syscall_stub(struct mm_id * mm_idp,
- int syscall, unsigned long *args, long expected,
- void **addr, int done);
-extern long syscall_stub_data(struct mm_id * mm_idp,
- unsigned long *data, int data_count,
- void **addr, void **stub_addr);
-extern int map(struct mm_id * mm_idp, unsigned long virt,
- unsigned long len, int prot, int phys_fd,
- unsigned long long offset, int done, void **data);
-extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
- int done, void **data);
-extern int protect(struct mm_id * mm_idp, unsigned long addr,
- unsigned long len, unsigned int prot, int done, void **data);
+int syscall_stub_flush(struct mm_id *mm_idp);
+struct stub_syscall *syscall_stub_alloc(struct mm_id *mm_idp);
+void syscall_stub_dump_error(struct mm_id *mm_idp);
+
+int map(struct mm_id *mm_idp, unsigned long virt,
+ unsigned long len, int prot, int phys_fd,
+ unsigned long long offset);
+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 copy_context_skas0(unsigned long stack, int pid);
-extern void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs);
+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);
extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
@@ -313,7 +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.
*
@@ -326,9 +327,6 @@ extern int __ignore_sigio_fd(int fd);
/* tty.c */
extern int get_pty(void);
-/* sys-$ARCH/task_size.c */
-extern unsigned long os_get_top_address(void);
-
long syscall(long number, ...);
/* irqflags tracing */
diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h
index a0450326521c..7d81b2339a48 100644
--- a/arch/um/include/shared/registers.h
+++ b/arch/um/include/shared/registers.h
@@ -8,12 +8,6 @@
#include <sysdep/ptrace.h>
-extern int save_i387_registers(int pid, unsigned long *fp_regs);
-extern int restore_i387_registers(int pid, unsigned long *fp_regs);
-extern int save_fp_registers(int pid, unsigned long *fp_regs);
-extern int restore_fp_registers(int pid, unsigned long *fp_regs);
-extern int save_fpx_registers(int pid, unsigned long *fp_regs);
-extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
extern int init_pid_registers(int pid);
extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
extern int get_fp_registers(int pid, unsigned long *regs);
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 e82e203f5f41..140388c282f6 100644
--- a/arch/um/include/shared/skas/mm_id.h
+++ b/arch/um/include/shared/skas/mm_id.h
@@ -7,12 +7,11 @@
#define __MM_ID_H
struct mm_id {
- union {
- int mm_fd;
- int pid;
- } u;
+ int pid;
unsigned long stack;
- int kill;
+ int syscall_data_len;
};
+void __switch_mm(struct mm_id *mm_idp);
+
#endif
diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h
index c93d2cbc8f32..85c50122ab98 100644
--- a/arch/um/include/shared/skas/skas.h
+++ b/arch/um/include/shared/skas/skas.h
@@ -10,10 +10,10 @@
extern int userspace_pid[];
-extern int user_thread(unsigned long stack, int flags);
extern void new_thread_handler(void);
extern void handle_syscall(struct uml_pt_regs *regs);
-extern long execute_syscall_skas(void *r);
extern unsigned long current_stub_stack(void);
+extern struct mm_id *current_mm_id(void);
+extern void current_mm_sync(void);
#endif
diff --git a/arch/um/include/shared/skas/stub-data.h b/arch/um/include/shared/skas/stub-data.h
index 5e3ade3fb38b..81a4cace032c 100644
--- a/arch/um/include/shared/skas/stub-data.h
+++ b/arch/um/include/shared/skas/stub-data.h
@@ -8,10 +8,52 @@
#ifndef __STUB_DATA_H
#define __STUB_DATA_H
+#include <linux/compiler_types.h>
+#include <as-layout.h>
+#include <sysdep/tls.h>
+
+struct stub_init_data {
+ unsigned long stub_start;
+
+ int stub_code_fd;
+ unsigned long stub_code_offset;
+ int stub_data_fd;
+ unsigned long stub_data_offset;
+
+ unsigned long segv_handler;
+};
+
+#define STUB_NEXT_SYSCALL(s) \
+ ((struct stub_syscall *) (((unsigned long) s) + (s)->cmd_len))
+
+enum stub_syscall_type {
+ STUB_SYSCALL_UNSET = 0,
+ STUB_SYSCALL_MMAP,
+ STUB_SYSCALL_MUNMAP,
+};
+
+struct stub_syscall {
+ struct {
+ unsigned long addr;
+ unsigned long length;
+ unsigned long offset;
+ int fd;
+ int prot;
+ } mem;
+
+ enum stub_syscall_type syscall;
+};
+
struct stub_data {
unsigned long offset;
- int fd;
- long parent_err, child_err;
+ long err, child_err;
+
+ int syscall_data_len;
+ /* 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);
+
+ /* Stack for our signal handlers and for calling into . */
+ unsigned char sigstack[UM_KERN_PAGE_SIZE] __aligned(UM_KERN_PAGE_SIZE);
};
#endif
diff --git a/arch/um/include/shared/timetravel.h b/arch/um/include/shared/timetravel.h
index e5c3d69f1b69..7c2b277b7eb0 100644
--- a/arch/um/include/shared/timetravel.h
+++ b/arch/um/include/shared/timetravel.h
@@ -12,11 +12,19 @@ enum time_travel_mode {
TT_MODE_EXTERNAL,
};
-#if defined(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT) || \
- defined(CONFIG_UML_TIME_TRAVEL_SUPPORT)
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
extern enum time_travel_mode time_travel_mode;
+extern int time_travel_should_print_bc_msg;
#else
#define time_travel_mode TT_MODE_OFF
-#endif /* (UML_)CONFIG_UML_TIME_TRAVEL_SUPPORT */
+#define time_travel_should_print_bc_msg 0
+#endif /* CONFIG_UML_TIME_TRAVEL_SUPPORT */
+
+void _time_travel_print_bc_msg(void);
+static inline void time_travel_print_bc_msg(void)
+{
+ if (time_travel_should_print_bc_msg)
+ _time_travel_print_bc_msg();
+}
#endif /* _UM_TIME_TRAVEL_H_ */
diff --git a/arch/um/include/shared/um_malloc.h b/arch/um/include/shared/um_malloc.h
index 13da93284c2c..815dd03e8707 100644
--- a/arch/um/include/shared/um_malloc.h
+++ b/arch/um/include/shared/um_malloc.h
@@ -11,8 +11,9 @@
extern void *uml_kmalloc(int size, int flags);
extern void kfree(const void *ptr);
-extern void *vmalloc(unsigned long size);
-extern void vfree(void *ptr);
+extern void *vmalloc_noprof(unsigned long size);
+#define vmalloc(...) vmalloc_noprof(__VA_ARGS__)
+extern void vfree(const void *ptr);
#endif /* __UM_MALLOC_H__ */
diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h
index 326e52450e41..139eb78a4767 100644
--- a/arch/um/include/shared/user.h
+++ b/arch/um/include/shared/user.h
@@ -38,15 +38,23 @@ extern void panic(const char *fmt, ...)
#define UM_KERN_DEBUG KERN_DEBUG
#define UM_KERN_CONT KERN_CONT
-#ifdef UML_CONFIG_PRINTK
+#if IS_ENABLED(CONFIG_PRINTK)
#define printk(...) _printk(__VA_ARGS__)
extern int _printk(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
+extern void print_hex_dump(const char *level, const char *prefix_str,
+ int prefix_type, int rowsize, int groupsize,
+ const void *buf, size_t len, _Bool ascii);
#else
static inline int printk(const char *fmt, ...)
{
return 0;
}
+static inline void print_hex_dump(const char *level, const char *prefix_str,
+ int prefix_type, int rowsize, int groupsize,
+ const void *buf, size_t len, _Bool ascii)
+{
+}
#endif
extern int in_aton(char *str);
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-27 00:23:26 +0000