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qemu/bsd-user/syscall_defs.h
Richard Henderson a05cee93f4 linux-user: Use ARRAY_SIZE with bitmask_transtbl 
Rather than using a zero tuple to end the table, use a macro
to apply ARRAY_SIZE and pass that on to the convert functions.

This fixes two bugs in which the conversion functions required
that both the target and host masks be non-zero in order to
continue, rather than require both target and host masks be
zero in order to terminate.

This affected mmap_flags_tbl when the host does not support
all of the flags we wish to convert (e.g. MAP_UNINITIALIZED).
Mapping these flags to zero is good enough, and matches how
the kernel ignores bits that are unknown.

Fixes: 4b840f96 ("linux-user: Populate more bits in mmap_flags_tbl")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-09 07:17:42 -07:00

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/*
* System call related declarations
*
* Copyright (c) 2013-15 Stacey D. Son (sson at FreeBSD)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SYSCALL_DEFS_H
#define SYSCALL_DEFS_H
#include <sys/syscall.h>
#include <sys/resource.h>
#include "errno_defs.h"
#include "freebsd/syscall_nr.h"
#include "netbsd/syscall_nr.h"
#include "openbsd/syscall_nr.h"
/*
* machine/_types.h
* or x86/_types.h
*/
/*
* time_t seems to be very inconsistly defined for the different *BSD's...
*
* FreeBSD uses a 64bits time_t except on i386
* so we have to add a special case here.
*
* On NetBSD time_t is always defined as an int64_t. On OpenBSD time_t
* is always defined as an int.
*
*/
#if (!defined(TARGET_I386))
typedef int64_t target_freebsd_time_t;
#else
typedef int32_t target_freebsd_time_t;
#endif
struct target_iovec {
abi_long iov_base; /* Starting address */
abi_long iov_len; /* Number of bytes */
};
/*
* sys/mman.h
*/
#define TARGET_FREEBSD_MAP_RESERVED0080 0x0080 /* previously misimplemented */
/* MAP_INHERIT */
#define TARGET_FREEBSD_MAP_RESERVED0100 0x0100 /* previously unimplemented */
/* MAP_NOEXTEND */
#define TARGET_FREEBSD_MAP_STACK 0x0400 /* region grows down, like a */
/* stack */
#define TARGET_FREEBSD_MAP_NOSYNC 0x0800 /* page to but do not sync */
/* underlying file */
#define TARGET_FREEBSD_MAP_FLAGMASK 0x1ff7
#define TARGET_NETBSD_MAP_INHERIT 0x0080 /* region is retained after */
/* exec */
#define TARGET_NETBSD_MAP_TRYFIXED 0x0400 /* attempt hint address, even */
/* within break */
#define TARGET_NETBSD_MAP_WIRED 0x0800 /* mlock() mapping when it is */
/* established */
#define TARGET_NETBSD_MAP_STACK 0x2000 /* allocated from memory, */
/* swap space (stack) */
#define TARGET_NETBSD_MAP_FLAGMASK 0x3ff7
#define TARGET_OPENBSD_MAP_INHERIT 0x0080 /* region is retained after */
/* exec */
#define TARGET_OPENBSD_MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change */
/* file size */
#define TARGET_OPENBSD_MAP_TRYFIXED 0x0400 /* attempt hint address, */
/* even within heap */
#define TARGET_OPENBSD_MAP_FLAGMASK 0x17f7
/* XXX */
#define TARGET_BSD_MAP_FLAGMASK 0x3ff7
/*
* sys/time.h
* sys/timex.h
*/
typedef abi_long target_freebsd_suseconds_t;
/* compare to sys/timespec.h */
struct target_freebsd_timespec {
target_freebsd_time_t tv_sec; /* seconds */
abi_long tv_nsec; /* and nanoseconds */
#if !defined(TARGET_I386) && TARGET_ABI_BITS == 32
abi_long _pad;
#endif
};
#define TARGET_CPUCLOCK_WHICH_PID 0
#define TARGET_CPUCLOCK_WHICH_TID 1
/* sys/umtx.h */
struct target_freebsd__umtx_time {
struct target_freebsd_timespec _timeout;
uint32_t _flags;
uint32_t _clockid;
};
struct target_freebsd_timeval {
target_freebsd_time_t tv_sec; /* seconds */
target_freebsd_suseconds_t tv_usec;/* and microseconds */
#if !defined(TARGET_I386) && TARGET_ABI_BITS == 32
abi_long _pad;
#endif
};
/*
* sys/resource.h
*/
#if defined(__FreeBSD__)
#define TARGET_RLIM_INFINITY RLIM_INFINITY
#else
#define TARGET_RLIM_INFINITY ((abi_ulong)-1)
#endif
#define TARGET_RLIMIT_CPU 0
#define TARGET_RLIMIT_FSIZE 1
#define TARGET_RLIMIT_DATA 2
#define TARGET_RLIMIT_STACK 3
#define TARGET_RLIMIT_CORE 4
#define TARGET_RLIMIT_RSS 5
#define TARGET_RLIMIT_MEMLOCK 6
#define TARGET_RLIMIT_NPROC 7
#define TARGET_RLIMIT_NOFILE 8
#define TARGET_RLIMIT_SBSIZE 9
#define TARGET_RLIMIT_AS 10
#define TARGET_RLIMIT_NPTS 11
#define TARGET_RLIMIT_SWAP 12
struct target_rlimit {
uint64_t rlim_cur;
uint64_t rlim_max;
};
struct target_freebsd_rusage {
struct target_freebsd_timeval ru_utime; /* user time used */
struct target_freebsd_timeval ru_stime; /* system time used */
abi_long ru_maxrss; /* maximum resident set size */
abi_long ru_ixrss; /* integral shared memory size */
abi_long ru_idrss; /* integral unshared data size */
abi_long ru_isrss; /* integral unshared stack size */
abi_long ru_minflt; /* page reclaims */
abi_long ru_majflt; /* page faults */
abi_long ru_nswap; /* swaps */
abi_long ru_inblock; /* block input operations */
abi_long ru_oublock; /* block output operations */
abi_long ru_msgsnd; /* messages sent */
abi_long ru_msgrcv; /* messages received */
abi_long ru_nsignals; /* signals received */
abi_long ru_nvcsw; /* voluntary context switches */
abi_long ru_nivcsw; /* involuntary context switches */
};
struct target_freebsd__wrusage {
struct target_freebsd_rusage wru_self;
struct target_freebsd_rusage wru_children;
};
#define safe_syscall0(type, name) \
type safe_##name(void) \
{ \
return safe_syscall(SYS_##name); \
}
#define safe_syscall1(type, name, type1, arg1) \
type safe_##name(type1 arg1) \
{ \
return safe_syscall(SYS_##name, arg1); \
}
#define safe_syscall2(type, name, type1, arg1, type2, arg2) \
type safe_##name(type1 arg1, type2 arg2) \
{ \
return safe_syscall(SYS_##name, arg1, arg2); \
}
#define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
{ \
return safe_syscall(SYS_##name, arg1, arg2, arg3); \
}
#define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4) \
type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
return safe_syscall(SYS_##name, arg1, arg2, arg3, arg4); \
}
#define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4, type5, arg5) \
type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
type5 arg5) \
{ \
return safe_syscall(SYS_##name, arg1, arg2, arg3, arg4, arg5); \
}
#define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4, type5, arg5, type6, arg6) \
type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
type5 arg5, type6 arg6) \
{ \
return safe_syscall(SYS_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
}
/* So far all target and host bitmasks are the same */
#undef target_to_host_bitmask
#define target_to_host_bitmask(x, tbl) (x)
#undef host_to_target_bitmask
#define host_to_target_bitmask(x, tbl) (x)
#endif /* SYSCALL_DEFS_H */
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