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Add generic sys_old_select()

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Add a generic implementation of the old select() syscall, which expects
its argument in a memory block and switch all architectures over to use
it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: James Morris <jmorris@namei.org>
Acked-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2010-03-10 15:21:13 -08:00 committed by Linus Torvalds
parent 724ee626f3
commit 5d0e52830e
27 changed files with 52 additions and 152 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/include/asm/unistd.h
View File

@ -443,6 +443,7 @@
#define __ARCH_WANT_SYS_SIGPROCMASK
#define __ARCH_WANT_SYS_RT_SIGACTION
#define __ARCH_WANT_SYS_RT_SIGSUSPEND
#define __ARCH_WANT_SYS_OLD_SELECT
#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
#define __ARCH_WANT_SYS_TIME

2
arch/arm/kernel/calls.S
View File

@ -91,7 +91,7 @@
CALL(sys_settimeofday)
/* 80 */ CALL(sys_getgroups16)
CALL(sys_setgroups16)
CALL(OBSOLETE(old_select)) /* used by libc4 */
CALL(OBSOLETE(sys_old_select)) /* used by libc4 */
CALL(sys_symlink)
CALL(sys_ni_syscall) /* was sys_lstat */
/* 85 */ CALL(sys_readlink)

21
arch/arm/kernel/sys_arm.c
View File

@ -54,27 +54,6 @@ out:
return error;
}
/*
* Perform the select(nd, in, out, ex, tv) and mmap() system
* calls.
*/
struct sel_arg_struct {
unsigned long n;
fd_set __user *inp, *outp, *exp;
struct timeval __user *tvp;
};
asmlinkage int old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..

1
arch/h8300/include/asm/unistd.h
View File

@ -348,6 +348,7 @@
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_OLD_GETRLIMIT
#define __ARCH_WANT_SYS_OLD_SELECT
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK

16
arch/h8300/kernel/sys_h8300.c
View File

@ -60,22 +60,6 @@ out:
return error;
}
struct sel_arg_struct {
unsigned long n;
fd_set *inp, *outp, *exp;
struct timeval *tvp;
};
asmlinkage int old_select(struct sel_arg_struct *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*

2
arch/h8300/kernel/syscalls.S
View File

@ -96,7 +96,7 @@ SYMBOL_NAME_LABEL(sys_call_table)
.long SYMBOL_NAME(sys_settimeofday)
.long SYMBOL_NAME(sys_getgroups16) /* 80 */
.long SYMBOL_NAME(sys_setgroups16)
.long SYMBOL_NAME(old_select)
.long SYMBOL_NAME(sys_old_select)
.long SYMBOL_NAME(sys_symlink)
.long SYMBOL_NAME(sys_lstat)
.long SYMBOL_NAME(sys_readlink) /* 85 */

1
arch/m68k/include/asm/unistd.h
View File

@ -363,6 +363,7 @@
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_OLD_GETRLIMIT
#define __ARCH_WANT_SYS_OLD_SELECT
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK

2
arch/m68k/kernel/entry.S
View File

@ -510,7 +510,7 @@ sys_call_table:
.long sys_settimeofday
.long sys_getgroups16 /* 80 */
.long sys_setgroups16
.long old_select
.long sys_old_select
.long sys_symlink
.long sys_lstat
.long sys_readlink /* 85 */

16
arch/m68k/kernel/sys_m68k.c
View File

@ -80,22 +80,6 @@ out:
return error;
}
struct sel_arg_struct {
unsigned long n;
fd_set __user *inp, *outp, *exp;
struct timeval __user *tvp;
};
asmlinkage int old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*

16
arch/m68knommu/kernel/sys_m68k.c
View File

@ -61,22 +61,6 @@ out:
return error;
}
struct sel_arg_struct {
unsigned long n;
fd_set *inp, *outp, *exp;
struct timeval *tvp;
};
asmlinkage int old_select(struct sel_arg_struct *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*

2
arch/m68knommu/kernel/syscalltable.S
View File

@ -100,7 +100,7 @@ ENTRY(sys_call_table)
.long sys_settimeofday
.long sys_getgroups16 /* 80 */
.long sys_setgroups16
.long old_select
.long sys_old_select
.long sys_symlink
.long sys_lstat
.long sys_readlink /* 85 */

1
arch/mn10300/include/asm/unistd.h
View File

@ -375,6 +375,7 @@
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_OLD_GETRLIMIT
#define __ARCH_WANT_SYS_OLD_SELECT
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK

2
arch/mn10300/kernel/entry.S
View File

@ -468,7 +468,7 @@ ENTRY(sys_call_table)
.long sys_settimeofday
.long sys_getgroups16 /* 80 */
.long sys_setgroups16
.long old_select
.long sys_old_select
.long sys_symlink
.long sys_lstat
.long sys_readlink /* 85 */

18
arch/mn10300/kernel/sys_mn10300.c
View File

@ -32,24 +32,6 @@ asmlinkage long old_mmap(unsigned long addr, unsigned long len,
return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
}
struct sel_arg_struct {
unsigned long n;
fd_set *inp;
fd_set *outp;
fd_set *exp;
struct timeval *tvp;
};
asmlinkage int old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*

1
arch/s390/kernel/entry.h
View File

@ -28,7 +28,6 @@ struct new_utsname;
struct mmap_arg_struct;
struct fadvise64_64_args;
struct old_sigaction;
struct sel_arg_struct;
long sys_mmap2(struct mmap_arg_struct __user *arg);
long sys_s390_old_mmap(struct mmap_arg_struct __user *arg);

18
arch/um/sys-i386/syscalls.c
View File

@ -44,24 +44,6 @@ long old_mmap_i386(struct mmap_arg_struct __user *arg)
return err;
}
struct sel_arg_struct {
unsigned long n;
fd_set __user *inp;
fd_set __user *outp;
fd_set __user *exp;
struct timeval __user *tvp;
};
long old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* The prototype on i386 is:
*

2
arch/x86/ia32/ia32entry.S
View File

@ -586,7 +586,7 @@ ia32_sys_call_table:
.quad compat_sys_settimeofday
.quad sys_getgroups16 /* 80 */
.quad sys_setgroups16
.quad sys32_old_select
.quad compat_sys_old_select
.quad sys_symlink
.quad sys_lstat
.quad sys_readlink /* 85 */

18
arch/x86/ia32/sys_ia32.c
View File

@ -332,24 +332,6 @@ asmlinkage long sys32_alarm(unsigned int seconds)
return alarm_setitimer(seconds);
}
struct sel_arg_struct {
unsigned int n;
unsigned int inp;
unsigned int outp;
unsigned int exp;
unsigned int tvp;
};
asmlinkage long sys32_old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
compat_ptr(a.exp), compat_ptr(a.tvp));
}
asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
int options)
{

2
arch/x86/include/asm/sys_ia32.h
View File

@ -40,8 +40,6 @@ asmlinkage long sys32_rt_sigprocmask(int, compat_sigset_t __user *,
compat_sigset_t __user *, unsigned int);
asmlinkage long sys32_alarm(unsigned int);
struct sel_arg_struct;
asmlinkage long sys32_old_select(struct sel_arg_struct __user *);
asmlinkage long sys32_waitpid(compat_pid_t, unsigned int *, int);
asmlinkage long sys32_sysfs(int, u32, u32);

2
arch/x86/include/asm/syscalls.h
View File

@ -52,12 +52,10 @@ unsigned long sys_sigreturn(struct pt_regs *);
/* kernel/sys_i386_32.c */
struct mmap_arg_struct;
struct sel_arg_struct;
struct oldold_utsname;
struct old_utsname;
asmlinkage int old_mmap(struct mmap_arg_struct __user *);
asmlinkage int old_select(struct sel_arg_struct __user *);
asmlinkage int sys_ipc(uint, int, int, int, void __user *, long);
asmlinkage int sys_uname(struct old_utsname __user *);
asmlinkage int sys_olduname(struct oldold_utsname __user *);

1
arch/x86/include/asm/unistd_32.h
View File

@ -366,6 +366,7 @@
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_OLD_GETRLIMIT
#define __ARCH_WANT_SYS_OLD_SELECT
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK

17
arch/x86/kernel/sys_i386_32.c
View File

@ -58,23 +58,6 @@ out:
return err;
}
struct sel_arg_struct {
unsigned long n;
fd_set __user *inp, *outp, *exp;
struct timeval __user *tvp;
};
asmlinkage int old_select(struct sel_arg_struct __user *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
/* sys_select() does the appropriate kernel locking */
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*

2
arch/x86/kernel/syscall_table_32.S
View File

@ -81,7 +81,7 @@ ENTRY(sys_call_table)
.long sys_settimeofday
.long sys_getgroups16 /* 80 */
.long sys_setgroups16
.long old_select
.long sys_old_select
.long sys_symlink
.long sys_lstat
.long sys_readlink /* 85 */

18
fs/compat.c
View File

@ -1795,6 +1795,24 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
return ret;
}
struct compat_sel_arg_struct {
compat_ulong_t n;
compat_uptr_t inp;
compat_uptr_t outp;
compat_uptr_t exp;
compat_uptr_t tvp;
};
asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg)
{
struct compat_sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
compat_ptr(a.exp), compat_ptr(a.tvp));
}
#ifdef HAVE_SET_RESTORE_SIGMASK
static long do_compat_pselect(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,

17
fs/select.c
View File

@ -691,6 +691,23 @@ SYSCALL_DEFINE6(pselect6, int, n, fd_set __user *, inp, fd_set __user *, outp,
}
#endif /* HAVE_SET_RESTORE_SIGMASK */
#ifdef __ARCH_WANT_SYS_OLD_SELECT
struct sel_arg_struct {
unsigned long n;
fd_set __user *inp, *outp, *exp;
struct timeval __user *tvp;
};
SYSCALL_DEFINE1(old_select, struct sel_arg_struct __user *, arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
}
#endif
struct poll_list {
struct poll_list *next;
int len;

3
include/linux/compat.h
View File

@ -23,6 +23,7 @@
typedef __compat_uid32_t compat_uid_t;
typedef __compat_gid32_t compat_gid_t;
struct compat_sel_arg_struct;
struct rusage;
struct compat_itimerspec {
@ -249,6 +250,8 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
struct compat_timeval __user *tvp);
asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg);
asmlinkage long compat_sys_wait4(compat_pid_t pid,
compat_uint_t __user *stat_addr, int options,
struct compat_rusage __user *ru);

2
include/linux/syscalls.h
View File

@ -34,6 +34,7 @@ struct pollfd;
struct rlimit;
struct rusage;
struct sched_param;
struct sel_arg_struct;
struct semaphore;
struct sembuf;
struct shmid_ds;
@ -638,6 +639,7 @@ asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
long timeout);
asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
fd_set __user *exp, struct timeval __user *tvp);
asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
asmlinkage long sys_epoll_create(int size);
asmlinkage long sys_epoll_create1(int flags);
asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,