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freebsd-dev/sys/i386/linux/linux.h
Marcel Moolenaar d034d459da Don't use p->p_sigstk.ss_flags to keep state of whether the 
process is on the alternate stack or not. For compatibility
with sigstack(2) state is being updated if such is needed.

We now determine whether the process is on the alternate
stack by looking at its stack pointer. This allows a process
to siglongjmp from a signal handler on the alternate stack
to the place of the sigsetjmp on the normal stack. When
maintaining state, this would have invalidated the state
information and causing a subsequent signal to be delivered
on the normal stack instead of the alternate stack.

PR: 22286
2000-11-30 05:23:49 +00:00

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/*-
* Copyright (c) 1994-1996 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _I386_LINUX_LINUX_H_
#define _I386_LINUX_LINUX_H_
#include <sys/signal.h> /* for sigval union */
#include <i386/linux/linux_syscall.h>
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_LINUX);
#endif
/*
* Miscellaneous
*/
#define LINUX_NAME_MAX 255
#define LINUX_MAX_UTSNAME 65
/* Scheduling policies */
#define LINUX_SCHED_OTHER 0
#define LINUX_SCHED_FIFO 1
#define LINUX_SCHED_RR 2
/* Resource limits */
#define LINUX_RLIMIT_CPU 0
#define LINUX_RLIMIT_FSIZE 1
#define LINUX_RLIMIT_DATA 2
#define LINUX_RLIMIT_STACK 3
#define LINUX_RLIMIT_CORE 4
#define LINUX_RLIMIT_RSS 5
#define LINUX_RLIMIT_NPROC 6
#define LINUX_RLIMIT_NOFILE 7
#define LINUX_RLIMIT_MEMLOCK 8
#define LINUX_RLIMIT_AS 9 /* address space limit */
#define LINUX_RLIM_NLIMITS 10
/* mmap options */
#define LINUX_MAP_SHARED 0x0001
#define LINUX_MAP_PRIVATE 0x0002
#define LINUX_MAP_FIXED 0x0010
#define LINUX_MAP_ANON 0x0020
#define LINUX_MAP_GROWSDOWN 0x0100
typedef char * linux_caddr_t;
typedef long linux_clock_t;
typedef u_short linux_dev_t;
typedef u_short linux_gid_t;
typedef u_long linux_ino_t;
typedef int linux_key_t; /* XXX */
typedef u_short linux_mode_t;
typedef u_short linux_nlink_t;
typedef long linux_off_t;
typedef int linux_pid_t;
typedef u_int linux_size_t;
typedef long linux_time_t;
typedef u_short linux_uid_t;
typedef struct {
long val[2];
} linux_fsid_t;
struct linux_new_utsname {
char sysname[LINUX_MAX_UTSNAME];
char nodename[LINUX_MAX_UTSNAME];
char release[LINUX_MAX_UTSNAME];
char version[LINUX_MAX_UTSNAME];
char machine[LINUX_MAX_UTSNAME];
char domainname[LINUX_MAX_UTSNAME];
};
/*
* Signalling
*/
#define LINUX_SIGHUP 1
#define LINUX_SIGINT 2
#define LINUX_SIGQUIT 3
#define LINUX_SIGILL 4
#define LINUX_SIGTRAP 5
#define LINUX_SIGABRT 6
#define LINUX_SIGIOT LINUX_SIGABRT
#define LINUX_SIGBUS 7
#define LINUX_SIGFPE 8
#define LINUX_SIGKILL 9
#define LINUX_SIGUSR1 10
#define LINUX_SIGSEGV 11
#define LINUX_SIGUSR2 12
#define LINUX_SIGPIPE 13
#define LINUX_SIGALRM 14
#define LINUX_SIGTERM 15
#define LINUX_SIGSTKFLT 16
#define LINUX_SIGCHLD 17
#define LINUX_SIGCONT 18
#define LINUX_SIGSTOP 19
#define LINUX_SIGTSTP 20
#define LINUX_SIGTTIN 21
#define LINUX_SIGTTOU 22
#define LINUX_SIGURG 23
#define LINUX_SIGXCPU 24
#define LINUX_SIGXFSZ 25
#define LINUX_SIGVTALRM 26
#define LINUX_SIGPROF 27
#define LINUX_SIGWINCH 28
#define LINUX_SIGIO 29
#define LINUX_SIGPOLL LINUX_SIGIO
#define LINUX_SIGPWR 30
#define LINUX_SIGUNUSED 31
#define LINUX_SIGTBLSZ 31
#define LINUX_NSIG_WORDS 2
#define LINUX_NBPW 32
#define LINUX_NSIG (LINUX_NBPW * LINUX_NSIG_WORDS)
/* sigaction flags */
#define LINUX_SA_NOCLDSTOP 0x00000001
#define LINUX_SA_NOCLDWAIT 0x00000002
#define LINUX_SA_SIGINFO 0x00000004
#define LINUX_SA_RESTORER 0x04000000
#define LINUX_SA_ONSTACK 0x08000000
#define LINUX_SA_RESTART 0x10000000
#define LINUX_SA_INTERRUPT 0x20000000
#define LINUX_SA_NOMASK 0x40000000
#define LINUX_SA_ONESHOT 0x80000000
/* sigprocmask actions */
#define LINUX_SIG_BLOCK 0
#define LINUX_SIG_UNBLOCK 1
#define LINUX_SIG_SETMASK 2
/* sigset_t macros */
#define LINUX_SIGEMPTYSET(set) (set).__bits[0] = (set).__bits[1] = 0
#define LINUX_SIGISMEMBER(set, sig) SIGISMEMBER(set, sig)
#define LINUX_SIGADDSET(set, sig) SIGADDSET(set, sig)
/* sigaltstack */
#define LINUX_MINSIGSTKSZ 2048
#define LINUX_SS_ONSTACK 1
#define LINUX_SS_DISABLE 2
int linux_to_bsd_sigaltstack(int lsa);
int bsd_to_linux_sigaltstack(int bsa);
typedef void (*linux_handler_t)(int);
typedef u_long linux_osigset_t;
typedef struct {
u_int __bits[LINUX_NSIG_WORDS];
} linux_sigset_t;
typedef struct {
linux_handler_t lsa_handler;
linux_osigset_t lsa_mask;
u_long lsa_flags;
void (*lsa_restorer)(void);
} linux_osigaction_t;
typedef struct {
linux_handler_t lsa_handler;
u_long lsa_flags;
void (*lsa_restorer)(void);
linux_sigset_t lsa_mask;
} linux_sigaction_t;
typedef struct {
void *ss_sp;
int ss_flags;
linux_size_t ss_size;
} linux_stack_t;
/* The Linux sigcontext, pretty much a standard 386 trapframe. */
struct linux_sigcontext {
int sc_gs;
int sc_fs;
int sc_es;
int sc_ds;
int sc_edi;
int sc_esi;
int sc_ebp;
int sc_esp;
int sc_ebx;
int sc_edx;
int sc_ecx;
int sc_eax;
int sc_trapno;
int sc_err;
int sc_eip;
int sc_cs;
int sc_eflags;
int sc_esp_at_signal;
int sc_ss;
int sc_387;
int sc_mask;
int sc_cr2;
};
struct linux_ucontext {
unsigned long uc_flags;
void *uc_link;
linux_stack_t uc_stack;
struct linux_sigcontext uc_mcontext;
linux_sigset_t uc_sigmask;
};
#define LINUX_SI_MAX_SIZE 128
#define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(int)) - 3)
typedef struct siginfo {
int lsi_signo;
int lsi_errno;
int lsi_code;
union {
int _pad[LINUX_SI_PAD_SIZE];
struct {
linux_pid_t _pid;
linux_uid_t _uid;
} _kill;
struct {
unsigned int _timer1;
unsigned int _timer2;
} _timer;
struct {
linux_pid_t _pid; /* sender's pid */
linux_uid_t _uid; /* sender's uid */
union sigval _sigval;
} _rt;
struct {
linux_pid_t _pid; /* which child */
linux_uid_t _uid; /* sender's uid */
int _status; /* exit code */
linux_clock_t _utime;
linux_clock_t _stime;
} _sigchld;
struct {
void *_addr; /* faulting insn/memory ref. */
} _sigfault;
struct {
int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
int _fd;
} _sigpoll;
} _sifields;
} linux_siginfo_t;
#define lsi_pid _sifields._kill._pid
#define lsi_uid _sifields._kill._uid
#define lsi_status _sifields._sigchld._status
#define lsi_utime _sifields._sigchld._utime
#define lsi_stime _sifields._sigchld._stime
#define lsi_value _sifields._rt._sigval
#define lsi_int _sifields._rt._sigval.sival_int
#define lsi_ptr _sifields._rt._sigval.sival_ptr
#define lsi_addr _sifields._sigfault._addr
#define lsi_band _sifields._sigpoll._band
#define lsi_fd _sifields._sigpoll._fd
struct linux_fpreg {
u_int16_t significand[4];
u_int16_t exponent;
};
struct linux_fpxreg {
u_int16_t significand[4];
u_int16_t exponent;
u_int16_t padding[3];
};
struct linux_xmmreg {
u_int32_t element[4];
};
struct linux_fpstate {
/* Regular FPU environment */
u_int32_t cw;
u_int32_t sw;
u_int32_t tag;
u_int32_t ipoff;
u_int32_t cssel;
u_int32_t dataoff;
u_int32_t datasel;
struct linux_fpreg _st[8];
u_int16_t status;
u_int16_t magic; /* 0xffff = regular FPU data */
/* FXSR FPU environment */
u_int32_t _fxsr_env[6]; /* env is ignored */
u_int32_t mxcsr;
u_int32_t reserved;
struct linux_fpxreg _fxsr_st[8]; /* reg data is ignored */
struct linux_xmmreg _xmm[8];
u_int32_t padding[56];
};
/*
* We make the stack look like Linux expects it when calling a signal
* handler, but use the BSD way of calling the handler and sigreturn().
* This means that we need to pass the pointer to the handler too.
* It is appended to the frame to not interfere with the rest of it.
*/
struct linux_sigframe {
int sf_sig;
struct linux_sigcontext sf_sc;
struct linux_fpstate sf_fpstate;
u_int sf_extramask[LINUX_NSIG_WORDS-1];
linux_handler_t sf_handler;
};
struct linux_rt_sigframe {
int sf_sig;
linux_siginfo_t *sf_siginfo;
struct linux_ucontext *sf_ucontext;
linux_siginfo_t sf_si;
struct linux_ucontext sf_sc;
linux_handler_t sf_handler;
};
extern int bsd_to_linux_signal[];
extern int linux_to_bsd_signal[];
extern struct sysentvec linux_sysvec;
extern struct sysentvec elf_linux_sysvec;
/*
* Pluggable ioctl handlers
*/
struct linker_set;
struct linux_ioctl_args;
struct proc;
typedef int linux_ioctl_function_t(struct proc *, struct linux_ioctl_args *);
struct linux_ioctl_handler {
linux_ioctl_function_t *func;
int low, high;
};
int linux_ioctl_register_handler(struct linux_ioctl_handler *h);
int linux_ioctl_register_handlers(struct linker_set *s);
int linux_ioctl_unregister_handler(struct linux_ioctl_handler *h);
int linux_ioctl_unregister_handlers(struct linker_set *s);
/*
* open/fcntl flags
*/
#define LINUX_O_RDONLY 00
#define LINUX_O_WRONLY 01
#define LINUX_O_RDWR 02
#define LINUX_O_CREAT 0100
#define LINUX_O_EXCL 0200
#define LINUX_O_NOCTTY 0400
#define LINUX_O_TRUNC 01000
#define LINUX_O_APPEND 02000
#define LINUX_O_NONBLOCK 04000
#define LINUX_O_NDELAY LINUX_O_NONBLOCK
#define LINUX_O_SYNC 010000
#define LINUX_FASYNC 020000
#define LINUX_F_DUPFD 0
#define LINUX_F_GETFD 1
#define LINUX_F_SETFD 2
#define LINUX_F_GETFL 3
#define LINUX_F_SETFL 4
#define LINUX_F_GETLK 5
#define LINUX_F_SETLK 6
#define LINUX_F_SETLKW 7
#define LINUX_F_SETOWN 8
#define LINUX_F_GETOWN 9
#define LINUX_F_RDLCK 0
#define LINUX_F_WRLCK 1
#define LINUX_F_UNLCK 2
/*
* SystemV IPC defines
*/
#define LINUX_SEMOP 1
#define LINUX_SEMGET 2
#define LINUX_SEMCTL 3
#define LINUX_MSGSND 11
#define LINUX_MSGRCV 12
#define LINUX_MSGGET 13
#define LINUX_MSGCTL 14
#define LINUX_SHMAT 21
#define LINUX_SHMDT 22
#define LINUX_SHMGET 23
#define LINUX_SHMCTL 24
#define LINUX_IPC_RMID 0
#define LINUX_IPC_SET 1
#define LINUX_IPC_STAT 2
#define LINUX_IPC_INFO 3
#define LINUX_SHM_LOCK 11
#define LINUX_SHM_UNLOCK 12
#define LINUX_SHM_STAT 13
#define LINUX_SHM_INFO 14
#define LINUX_SHM_RDONLY 0x1000
#define LINUX_SHM_RND 0x2000
#define LINUX_SHM_REMAP 0x4000
/* semctl commands */
#define LINUX_GETPID 11
#define LINUX_GETVAL 12
#define LINUX_GETALL 13
#define LINUX_GETNCNT 14
#define LINUX_GETZCNT 15
#define LINUX_SETVAL 16
#define LINUX_SETALL 17
/*
* Socket defines
*/
#define LINUX_SOCKET 1
#define LINUX_BIND 2
#define LINUX_CONNECT 3
#define LINUX_LISTEN 4
#define LINUX_ACCEPT 5
#define LINUX_GETSOCKNAME 6
#define LINUX_GETPEERNAME 7
#define LINUX_SOCKETPAIR 8
#define LINUX_SEND 9
#define LINUX_RECV 10
#define LINUX_SENDTO 11
#define LINUX_RECVFROM 12
#define LINUX_SHUTDOWN 13
#define LINUX_SETSOCKOPT 14
#define LINUX_GETSOCKOPT 15
#define LINUX_SENDMSG 16
#define LINUX_RECVMSG 17
#define LINUX_AF_UNSPEC 0
#define LINUX_AF_UNIX 1
#define LINUX_AF_INET 2
#define LINUX_AF_AX25 3
#define LINUX_AF_IPX 4
#define LINUX_AF_APPLETALK 5
#define LINUX_SOL_SOCKET 1
#define LINUX_SOL_IP 0
#define LINUX_SOL_IPX 256
#define LINUX_SOL_AX25 257
#define LINUX_SOL_TCP 6
#define LINUX_SOL_UDP 17
#define LINUX_SO_DEBUG 1
#define LINUX_SO_REUSEADDR 2
#define LINUX_SO_TYPE 3
#define LINUX_SO_ERROR 4
#define LINUX_SO_DONTROUTE 5
#define LINUX_SO_BROADCAST 6
#define LINUX_SO_SNDBUF 7
#define LINUX_SO_RCVBUF 8
#define LINUX_SO_KEEPALIVE 9
#define LINUX_SO_OOBINLINE 10
#define LINUX_SO_NO_CHECK 11
#define LINUX_SO_PRIORITY 12
#define LINUX_SO_LINGER 13
#define LINUX_IP_TOS 1
#define LINUX_IP_TTL 2
#define LINUX_IP_HDRINCL 3
#define LINUX_IP_OPTIONS 4
#define LINUX_IP_MULTICAST_IF 32
#define LINUX_IP_MULTICAST_TTL 33
#define LINUX_IP_MULTICAST_LOOP 34
#define LINUX_IP_ADD_MEMBERSHIP 35
#define LINUX_IP_DROP_MEMBERSHIP 36
struct linux_sockaddr {
u_short sa_family;
char sa_data[14];
};
struct linux_ifmap {
u_long mem_start;
u_long mem_end;
u_short base_addr;
u_char irq;
u_char dma;
u_char port;
};
#define LINUX_IFHWADDRLEN 6
#define LINUX_IFNAMSIZ 16
struct linux_ifreq {
union {
char ifrn_name[LINUX_IFNAMSIZ];
} ifr_ifrn;
union {
struct linux_sockaddr ifru_addr;
struct linux_sockaddr ifru_dstaddr;
struct linux_sockaddr ifru_broadaddr;
struct linux_sockaddr ifru_netmask;
struct linux_sockaddr ifru_hwaddr;
short ifru_flags;
int ifru_metric;
int ifru_mtu;
struct linux_ifmap ifru_map;
char ifru_slave[LINUX_IFNAMSIZ]; /* Just fits the size */
linux_caddr_t ifru_data;
} ifr_ifru;
};
#define ifr_name ifr_ifrn.ifrn_name /* interface name */
#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
#endif /* !_I386_LINUX_LINUX_H_ */
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