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-rw-r--r--include/linux/binfmts.h2
-rw-r--r--include/linux/compat.h4
-rw-r--r--include/linux/coredump.h4
-rw-r--r--include/linux/lsm_hooks.h4
-rw-r--r--include/linux/posix-timers.h2
-rw-r--r--include/linux/ptrace.h17
-rw-r--r--include/linux/sched.h2
-rw-r--r--include/linux/sched/signal.h23
-rw-r--r--include/linux/security.h6
-rw-r--r--include/linux/signal.h18
-rw-r--r--include/linux/signal_types.h8
-rw-r--r--include/linux/tracehook.h13
-rw-r--r--include/trace/events/signal.h7
-rw-r--r--include/uapi/asm-generic/siginfo.h193
14 files changed, 158 insertions, 145 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index c05f24fac4f6..e9f5fe69df31 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -78,7 +78,7 @@ struct linux_binprm {
/* Function parameter for binfmt->coredump */
struct coredump_params {
- const siginfo_t *siginfo;
+ const kernel_siginfo_t *siginfo;
struct pt_regs *regs;
struct file *file;
unsigned long limit;
diff --git a/include/linux/compat.h b/include/linux/compat.h
index de0c13bdcd2c..e75b926bc5df 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -455,8 +455,8 @@ long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
unsigned long bitmap_size);
long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
unsigned long bitmap_size);
-int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user *from);
-int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
+int copy_siginfo_from_user32(kernel_siginfo_t *to, const struct compat_siginfo __user *from);
+int copy_siginfo_to_user32(struct compat_siginfo __user *to, const kernel_siginfo_t *from);
int get_compat_sigevent(struct sigevent *event,
const struct compat_sigevent __user *u_event);
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 207aed96a5b7..abf4b4e65dbb 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -17,9 +17,9 @@ extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
extern int dump_align(struct coredump_params *cprm, int align);
extern void dump_truncate(struct coredump_params *cprm);
#ifdef CONFIG_COREDUMP
-extern void do_coredump(const siginfo_t *siginfo);
+extern void do_coredump(const kernel_siginfo_t *siginfo);
#else
-static inline void do_coredump(const siginfo_t *siginfo) {}
+static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
#endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 97a020c616ad..bb40f6d34163 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -672,7 +672,7 @@
* Return 0 if permission is granted.
* @task_kill:
* Check permission before sending signal @sig to @p. @info can be NULL,
- * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
+ * the constant 1, or a pointer to a kernel_siginfo structure. If @info is 1 or
* SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
* from the kernel and should typically be permitted.
* SIGIO signals are handled separately by the send_sigiotask hook in
@@ -1606,7 +1606,7 @@ union security_list_options {
int (*task_setscheduler)(struct task_struct *p);
int (*task_getscheduler)(struct task_struct *p);
int (*task_movememory)(struct task_struct *p);
- int (*task_kill)(struct task_struct *p, struct siginfo *info,
+ int (*task_kill)(struct task_struct *p, struct kernel_siginfo *info,
int sig, const struct cred *cred);
int (*task_prctl)(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index ee7e987ea1b4..e96581ca7c9d 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -126,5 +126,5 @@ void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
-void posixtimer_rearm(struct siginfo *info);
+void posixtimer_rearm(struct kernel_siginfo *info);
#endif
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index e5e5ef513df3..6c2ffed907f5 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -353,14 +353,19 @@ static inline void user_enable_block_step(struct task_struct *task)
extern void user_enable_block_step(struct task_struct *);
#endif /* arch_has_block_step */
-#ifdef ARCH_HAS_USER_SINGLE_STEP_INFO
-extern void user_single_step_siginfo(struct task_struct *tsk,
- struct pt_regs *regs, siginfo_t *info);
+#ifdef ARCH_HAS_USER_SINGLE_STEP_REPORT
+extern void user_single_step_report(struct pt_regs *regs);
#else
-static inline void user_single_step_siginfo(struct task_struct *tsk,
- struct pt_regs *regs, siginfo_t *info)
+static inline void user_single_step_report(struct pt_regs *regs)
{
- info->si_signo = SIGTRAP;
+ kernel_siginfo_t info;
+ clear_siginfo(&info);
+ info.si_signo = SIGTRAP;
+ info.si_errno = 0;
+ info.si_code = SI_USER;
+ info.si_pid = 0;
+ info.si_uid = 0;
+ force_sig_info(info.si_signo, &info, current);
}
#endif
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 58e2af8d064b..adfb3f9a7597 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -962,7 +962,7 @@ struct task_struct {
/* Ptrace state: */
unsigned long ptrace_message;
- siginfo_t *last_siginfo;
+ kernel_siginfo_t *last_siginfo;
struct task_io_accounting ioac;
#ifdef CONFIG_TASK_XACCT
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 1be35729c2c5..13789d10a50e 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -270,16 +270,16 @@ static inline int signal_group_exit(const struct signal_struct *sig)
extern void flush_signals(struct task_struct *);
extern void ignore_signals(struct task_struct *);
extern void flush_signal_handlers(struct task_struct *, int force_default);
-extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info);
+extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, kernel_siginfo_t *info);
-static inline int kernel_dequeue_signal(siginfo_t *info)
+static inline int kernel_dequeue_signal(void)
{
struct task_struct *tsk = current;
- siginfo_t __info;
+ kernel_siginfo_t __info;
int ret;
spin_lock_irq(&tsk->sighand->siglock);
- ret = dequeue_signal(tsk, &tsk->blocked, info ?: &__info);
+ ret = dequeue_signal(tsk, &tsk->blocked, &__info);
spin_unlock_irq(&tsk->sighand->siglock);
return ret;
@@ -322,12 +322,12 @@ int force_sig_pkuerr(void __user *addr, u32 pkey);
int force_sig_ptrace_errno_trap(int errno, void __user *addr);
-extern int send_sig_info(int, struct siginfo *, struct task_struct *);
+extern int send_sig_info(int, struct kernel_siginfo *, struct task_struct *);
extern void force_sigsegv(int sig, struct task_struct *p);
-extern int force_sig_info(int, struct siginfo *, struct task_struct *);
-extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
-extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
-extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
+extern int force_sig_info(int, struct kernel_siginfo *, struct task_struct *);
+extern int __kill_pgrp_info(int sig, struct kernel_siginfo *info, struct pid *pgrp);
+extern int kill_pid_info(int sig, struct kernel_siginfo *info, struct pid *pid);
+extern int kill_pid_info_as_cred(int, struct kernel_siginfo *, struct pid *,
const struct cred *);
extern int kill_pgrp(struct pid *pid, int sig, int priv);
extern int kill_pid(struct pid *pid, int sig, int priv);
@@ -475,9 +475,8 @@ static inline int kill_cad_pid(int sig, int priv)
}
/* These can be the second arg to send_sig_info/send_group_sig_info. */
-#define SEND_SIG_NOINFO ((struct siginfo *) 0)
-#define SEND_SIG_PRIV ((struct siginfo *) 1)
-#define SEND_SIG_FORCED ((struct siginfo *) 2)
+#define SEND_SIG_NOINFO ((struct kernel_siginfo *) 0)
+#define SEND_SIG_PRIV ((struct kernel_siginfo *) 1)
/*
* True if we are on the alternate signal stack.
diff --git a/include/linux/security.h b/include/linux/security.h
index 75f4156c84d7..d170a5b031f3 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -35,7 +35,7 @@
struct linux_binprm;
struct cred;
struct rlimit;
-struct siginfo;
+struct kernel_siginfo;
struct sembuf;
struct kern_ipc_perm;
struct audit_context;
@@ -361,7 +361,7 @@ int security_task_setrlimit(struct task_struct *p, unsigned int resource,
int security_task_setscheduler(struct task_struct *p);
int security_task_getscheduler(struct task_struct *p);
int security_task_movememory(struct task_struct *p);
-int security_task_kill(struct task_struct *p, struct siginfo *info,
+int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
int sig, const struct cred *cred);
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
@@ -1020,7 +1020,7 @@ static inline int security_task_movememory(struct task_struct *p)
}
static inline int security_task_kill(struct task_struct *p,
- struct siginfo *info, int sig,
+ struct kernel_siginfo *info, int sig,
const struct cred *cred)
{
return 0;
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 3d4cd5db30a9..200ed96a05af 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -11,17 +11,21 @@ struct task_struct;
/* for sysctl */
extern int print_fatal_signals;
-static inline void copy_siginfo(struct siginfo *to, const struct siginfo *from)
+static inline void copy_siginfo(kernel_siginfo_t *to,
+ const kernel_siginfo_t *from)
{
memcpy(to, from, sizeof(*to));
}
-static inline void clear_siginfo(struct siginfo *info)
+static inline void clear_siginfo(kernel_siginfo_t *info)
{
memset(info, 0, sizeof(*info));
}
-int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
+#define SI_EXPANSION_SIZE (sizeof(struct siginfo) - sizeof(struct kernel_siginfo))
+
+int copy_siginfo_to_user(siginfo_t __user *to, const kernel_siginfo_t *from);
+int copy_siginfo_from_user(kernel_siginfo_t *to, const siginfo_t __user *from);
enum siginfo_layout {
SIL_KILL,
@@ -36,7 +40,7 @@ enum siginfo_layout {
SIL_SYS,
};
-enum siginfo_layout siginfo_layout(int sig, int si_code);
+enum siginfo_layout siginfo_layout(unsigned sig, int si_code);
/*
* Define some primitives to manipulate sigset_t.
@@ -257,11 +261,11 @@ struct pt_regs;
enum pid_type;
extern int next_signal(struct sigpending *pending, sigset_t *mask);
-extern int do_send_sig_info(int sig, struct siginfo *info,
+extern int do_send_sig_info(int sig, struct kernel_siginfo *info,
struct task_struct *p, enum pid_type type);
-extern int group_send_sig_info(int sig, struct siginfo *info,
+extern int group_send_sig_info(int sig, struct kernel_siginfo *info,
struct task_struct *p, enum pid_type type);
-extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *);
+extern int __group_send_sig_info(int, struct kernel_siginfo *, struct task_struct *);
extern int sigprocmask(int, sigset_t *, sigset_t *);
extern void set_current_blocked(sigset_t *);
extern void __set_current_blocked(const sigset_t *);
diff --git a/include/linux/signal_types.h b/include/linux/signal_types.h
index 222ae696000b..f8a90ae9c6ec 100644
--- a/include/linux/signal_types.h
+++ b/include/linux/signal_types.h
@@ -9,6 +9,10 @@
#include <linux/list.h>
#include <uapi/linux/signal.h>
+typedef struct kernel_siginfo {
+ __SIGINFO;
+} kernel_siginfo_t;
+
/*
* Real Time signals may be queued.
*/
@@ -16,7 +20,7 @@
struct sigqueue {
struct list_head list;
int flags;
- siginfo_t info;
+ kernel_siginfo_t info;
struct user_struct *user;
};
@@ -60,7 +64,7 @@ struct old_sigaction {
struct ksignal {
struct k_sigaction ka;
- siginfo_t info;
+ kernel_siginfo_t info;
int sig;
};
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
index 05589a3e37f4..40b0b4c1bf7b 100644
--- a/include/linux/tracehook.h
+++ b/include/linux/tracehook.h
@@ -123,15 +123,10 @@ static inline __must_check int tracehook_report_syscall_entry(
*/
static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
{
- if (step) {
- siginfo_t info;
- clear_siginfo(&info);
- user_single_step_siginfo(current, regs, &info);
- force_sig_info(SIGTRAP, &info, current);
- return;
- }
-
- ptrace_report_syscall(regs);
+ if (step)
+ user_single_step_report(regs);
+ else
+ ptrace_report_syscall(regs);
}
/**
diff --git a/include/trace/events/signal.h b/include/trace/events/signal.h
index 86582923d51c..1db7e4b07c01 100644
--- a/include/trace/events/signal.h
+++ b/include/trace/events/signal.h
@@ -11,8 +11,7 @@
#define TP_STORE_SIGINFO(__entry, info) \
do { \
- if (info == SEND_SIG_NOINFO || \
- info == SEND_SIG_FORCED) { \
+ if (info == SEND_SIG_NOINFO) { \
__entry->errno = 0; \
__entry->code = SI_USER; \
} else if (info == SEND_SIG_PRIV) { \
@@ -50,7 +49,7 @@ enum {
*/
TRACE_EVENT(signal_generate,
- TP_PROTO(int sig, struct siginfo *info, struct task_struct *task,
+ TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task,
int group, int result),
TP_ARGS(sig, info, task, group, result),
@@ -96,7 +95,7 @@ TRACE_EVENT(signal_generate,
*/
TRACE_EVENT(signal_deliver,
- TP_PROTO(int sig, struct siginfo *info, struct k_sigaction *ka),
+ TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka),
TP_ARGS(sig, info, ka),
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 80e2a7227205..cb3d6c267181 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -10,18 +10,7 @@ typedef union sigval {
void __user *sival_ptr;
} sigval_t;
-/*
- * This is the size (including padding) of the part of the
- * struct siginfo that is before the union.
- */
-#ifndef __ARCH_SI_PREAMBLE_SIZE
-#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
-#endif
-
#define SI_MAX_SIZE 128
-#ifndef SI_PAD_SIZE
-#define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
-#endif
/*
* The default "si_band" type is "long", as specified by POSIX.
@@ -40,96 +29,108 @@ typedef union sigval {
#define __ARCH_SI_ATTRIBUTES
#endif
-typedef struct siginfo {
- int si_signo;
-#ifndef __ARCH_HAS_SWAPPED_SIGINFO
- int si_errno;
- int si_code;
-#else
- int si_code;
- int si_errno;
-#endif
-
- union {
- int _pad[SI_PAD_SIZE];
-
- /* kill() */
- struct {
- __kernel_pid_t _pid; /* sender's pid */
- __kernel_uid32_t _uid; /* sender's uid */
- } _kill;
-
- /* POSIX.1b timers */
- struct {
- __kernel_timer_t _tid; /* timer id */
- int _overrun; /* overrun count */
- sigval_t _sigval; /* same as below */
- int _sys_private; /* not to be passed to user */
- } _timer;
-
- /* POSIX.1b signals */
- struct {
- __kernel_pid_t _pid; /* sender's pid */
- __kernel_uid32_t _uid; /* sender's uid */
- sigval_t _sigval;
- } _rt;
-
- /* SIGCHLD */
- struct {
- __kernel_pid_t _pid; /* which child */
- __kernel_uid32_t _uid; /* sender's uid */
- int _status; /* exit code */
- __ARCH_SI_CLOCK_T _utime;
- __ARCH_SI_CLOCK_T _stime;
- } _sigchld;
-
- /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
- struct {
- void __user *_addr; /* faulting insn/memory ref. */
+union __sifields {
+ /* kill() */
+ struct {
+ __kernel_pid_t _pid; /* sender's pid */
+ __kernel_uid32_t _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+ __kernel_timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ sigval_t _sigval; /* same as below */
+ int _sys_private; /* not to be passed to user */
+ } _timer;
+
+ /* POSIX.1b signals */
+ struct {
+ __kernel_pid_t _pid; /* sender's pid */
+ __kernel_uid32_t _uid; /* sender's uid */
+ sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+ __kernel_pid_t _pid; /* which child */
+ __kernel_uid32_t _uid; /* sender's uid */
+ int _status; /* exit code */
+ __ARCH_SI_CLOCK_T _utime;
+ __ARCH_SI_CLOCK_T _stime;
+ } _sigchld;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
+ struct {
+ void __user *_addr; /* faulting insn/memory ref. */
#ifdef __ARCH_SI_TRAPNO
- int _trapno; /* TRAP # which caused the signal */
+ int _trapno; /* TRAP # which caused the signal */
#endif
#ifdef __ia64__
- int _imm; /* immediate value for "break" */
- unsigned int _flags; /* see ia64 si_flags */
- unsigned long _isr; /* isr */
+ int _imm; /* immediate value for "break" */
+ unsigned int _flags; /* see ia64 si_flags */
+ unsigned long _isr; /* isr */
#endif
#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \
sizeof(short) : __alignof__(void *))
- union {
- /*
- * used when si_code=BUS_MCEERR_AR or
- * used when si_code=BUS_MCEERR_AO
- */
- short _addr_lsb; /* LSB of the reported address */
- /* used when si_code=SEGV_BNDERR */
- struct {
- char _dummy_bnd[__ADDR_BND_PKEY_PAD];
- void __user *_lower;
- void __user *_upper;
- } _addr_bnd;
- /* used when si_code=SEGV_PKUERR */
- struct {
- char _dummy_pkey[__ADDR_BND_PKEY_PAD];
- __u32 _pkey;
- } _addr_pkey;
- };
- } _sigfault;
-
- /* SIGPOLL */
- struct {
- __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
- int _fd;
- } _sigpoll;
+ union {
+ /*
+ * used when si_code=BUS_MCEERR_AR or
+ * used when si_code=BUS_MCEERR_AO
+ */
+ short _addr_lsb; /* LSB of the reported address */
+ /* used when si_code=SEGV_BNDERR */
+ struct {
+ char _dummy_bnd[__ADDR_BND_PKEY_PAD];
+ void __user *_lower;
+ void __user *_upper;
+ } _addr_bnd;
+ /* used when si_code=SEGV_PKUERR */
+ struct {
+ char _dummy_pkey[__ADDR_BND_PKEY_PAD];
+ __u32 _pkey;
+ } _addr_pkey;
+ };
+ } _sigfault;
+
+ /* SIGPOLL */
+ struct {
+ __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
+ int _fd;
+ } _sigpoll;
+
+ /* SIGSYS */
+ struct {
+ void __user *_call_addr; /* calling user insn */
+ int _syscall; /* triggering system call number */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall */
+ } _sigsys;
+};
- /* SIGSYS */
- struct {
- void __user *_call_addr; /* calling user insn */
- int _syscall; /* triggering system call number */
- unsigned int _arch; /* AUDIT_ARCH_* of syscall */
- } _sigsys;
- } _sifields;
+#ifndef __ARCH_HAS_SWAPPED_SIGINFO
+#define __SIGINFO \
+struct { \
+ int si_signo; \
+ int si_errno; \
+ int si_code; \
+ union __sifields _sifields; \
+}
+#else
+#define __SIGINFO \
+struct { \
+ int si_signo; \
+ int si_code; \
+ int si_errno; \
+ union __sifields _sifields; \
+}
+#endif /* __ARCH_HAS_SWAPPED_SIGINFO */
+
+typedef struct siginfo {
+ union {
+ __SIGINFO;
+ int _si_pad[SI_MAX_SIZE/sizeof(int)];
+ };
} __ARCH_SI_ATTRIBUTES siginfo_t;
/*
@@ -286,6 +287,12 @@ typedef struct siginfo {
#define NSIGSYS 1
/*
+ * SIGEMT si_codes
+ */
+#define EMT_TAGOVF 1 /* tag overflow */
+#define NSIGEMT 1
+
+/*
* sigevent definitions
*
* It seems likely that SIGEV_THREAD will have to be handled from
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-02-08 16:59:00 +0000