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s390/compat: convert system call wrappers to C part 03 

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens 2014-02-27 14:04:43 +01:00
parent 473a06572f
commit be06fbf816
3 changed files with 20 additions and 65 deletions
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10
arch/s390/kernel/compat_wrap.c
View File

@ -43,3 +43,13 @@ COMPAT_SYSCALL_WRAP1(brk, compat_ulong_t, brk);
COMPAT_SYSCALL_WRAP2(signal, int, sig, __sighandler_t, handler);
COMPAT_SYSCALL_WRAP1(acct, const char __user *, name);
COMPAT_SYSCALL_WRAP2(umount, char __user *, name, int, flags);
COMPAT_SYSCALL_WRAP2(setpgid, compat_pid_t, pid, compat_pid_t, pgid);
COMPAT_SYSCALL_WRAP1(umask, int, mask);
COMPAT_SYSCALL_WRAP1(chroot, const char __user *, filename);
COMPAT_SYSCALL_WRAP2(dup2, unsigned int, oldfd, unsigned int, newfd);
COMPAT_SYSCALL_WRAP3(sigsuspend, int, unused1, int, unused2, compat_old_sigset_t, mask);
COMPAT_SYSCALL_WRAP2(sethostname, char __user *, name, int, len);
COMPAT_SYSCALL_WRAP2(symlink, const char __user *, old, const char __user *, new);
COMPAT_SYSCALL_WRAP3(readlink, const char __user *, path, char __user *, buf, int, bufsiz);
COMPAT_SYSCALL_WRAP1(uselib, const char __user *, library);
COMPAT_SYSCALL_WRAP2(swapon, const char __user *, specialfile, int, swap_flags);

55
arch/s390/kernel/compat_wrapper.S
View File

@ -50,50 +50,15 @@ ENTRY(compat_sys_fcntl_wrapper)
llgfr %r4,%r4 # unsigned long
jg compat_sys_fcntl # branch to system call
ENTRY(sys32_setpgid_wrapper)
lgfr %r2,%r2 # pid_t
lgfr %r3,%r3 # pid_t
jg sys_setpgid # branch to system call
ENTRY(sys32_umask_wrapper)
lgfr %r2,%r2 # int
jg sys_umask # branch to system call
ENTRY(sys32_chroot_wrapper)
llgtr %r2,%r2 # char *
jg sys_chroot # branch to system call
ENTRY(sys32_ustat_wrapper)
llgfr %r2,%r2 # dev_t
llgtr %r3,%r3 # struct ustat *
jg compat_sys_ustat
ENTRY(sys32_dup2_wrapper)
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
jg sys_dup2 # branch to system call
#sys32_getppid_wrapper # void
#sys32_getpgrp_wrapper # void
#sys32_setsid_wrapper # void
ENTRY(sys_sigsuspend_wrapper)
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
llgfr %r4,%r4 # old_sigset_t
jg sys_sigsuspend
ENTRY(compat_sys_sigpending_wrapper)
llgtr %r2,%r2 # compat_old_sigset_t *
jg compat_sys_sigpending # branch to system call
ENTRY(sys32_sethostname_wrapper)
llgtr %r2,%r2 # char *
lgfr %r3,%r3 # int
jg sys_sethostname # branch to system call
ENTRY(compat_sys_setrlimit_wrapper)
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct rlimit_emu31 *
@ -119,26 +84,6 @@ ENTRY(compat_sys_settimeofday_wrapper)
llgtr %r3,%r3 # struct timezone *
jg compat_sys_settimeofday # branch to system call
ENTRY(sys32_symlink_wrapper)
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # const char *
jg sys_symlink # branch to system call
ENTRY(sys32_readlink_wrapper)
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # char *
lgfr %r4,%r4 # int
jg sys_readlink # branch to system call
ENTRY(sys32_uselib_wrapper)
llgtr %r2,%r2 # const char *
jg sys_uselib # branch to system call
ENTRY(sys32_swapon_wrapper)
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
jg sys_swapon # branch to system call
ENTRY(sys32_reboot_wrapper)
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int

20
arch/s390/kernel/syscalls.S
View File

@ -65,13 +65,13 @@ NI_SYSCALL /* old lock syscall */
SYSCALL(sys_ioctl,sys_ioctl,compat_sys_ioctl_wrapper)
SYSCALL(sys_fcntl,sys_fcntl,compat_sys_fcntl_wrapper) /* 55 */
NI_SYSCALL /* intel mpx syscall */
SYSCALL(sys_setpgid,sys_setpgid,sys32_setpgid_wrapper)
SYSCALL(sys_setpgid,sys_setpgid,compat_sys_setpgid)
NI_SYSCALL /* old ulimit syscall */
NI_SYSCALL /* old uname syscall */
SYSCALL(sys_umask,sys_umask,sys32_umask_wrapper) /* 60 */
SYSCALL(sys_chroot,sys_chroot,sys32_chroot_wrapper)
SYSCALL(sys_umask,sys_umask,compat_sys_umask) /* 60 */
SYSCALL(sys_chroot,sys_chroot,compat_sys_chroot)
SYSCALL(sys_ustat,sys_ustat,sys32_ustat_wrapper)
SYSCALL(sys_dup2,sys_dup2,sys32_dup2_wrapper)
SYSCALL(sys_dup2,sys_dup2,compat_sys_dup2)
SYSCALL(sys_getppid,sys_getppid,sys_getppid)
SYSCALL(sys_getpgrp,sys_getpgrp,sys_getpgrp) /* 65 */
SYSCALL(sys_setsid,sys_setsid,sys_setsid)
@ -80,9 +80,9 @@ NI_SYSCALL /* old sgetmask syscall*/
NI_SYSCALL /* old ssetmask syscall*/
SYSCALL(sys_setreuid16,sys_ni_syscall,compat_sys_s390_setreuid16) /* old setreuid16 syscall */
SYSCALL(sys_setregid16,sys_ni_syscall,compat_sys_s390_setregid16) /* old setregid16 syscall */
SYSCALL(sys_sigsuspend,sys_sigsuspend,sys_sigsuspend_wrapper)
SYSCALL(sys_sigsuspend,sys_sigsuspend,compat_sys_sigsuspend)
SYSCALL(sys_sigpending,sys_sigpending,compat_sys_sigpending_wrapper)
SYSCALL(sys_sethostname,sys_sethostname,sys32_sethostname_wrapper)
SYSCALL(sys_sethostname,sys_sethostname,compat_sys_sethostname)
SYSCALL(sys_setrlimit,sys_setrlimit,compat_sys_setrlimit_wrapper) /* 75 */
SYSCALL(sys_old_getrlimit,sys_getrlimit,compat_sys_old_getrlimit_wrapper)
SYSCALL(sys_getrusage,sys_getrusage,compat_sys_getrusage)
@ -91,11 +91,11 @@ SYSCALL(sys_settimeofday,sys_settimeofday,compat_sys_settimeofday_wrapper)
SYSCALL(sys_getgroups16,sys_ni_syscall,compat_sys_s390_getgroups16) /* 80 old getgroups16 syscall */
SYSCALL(sys_setgroups16,sys_ni_syscall,compat_sys_s390_setgroups16) /* old setgroups16 syscall */
NI_SYSCALL /* old select syscall */
SYSCALL(sys_symlink,sys_symlink,sys32_symlink_wrapper)
SYSCALL(sys_symlink,sys_symlink,compat_sys_symlink)
NI_SYSCALL /* old lstat syscall */
SYSCALL(sys_readlink,sys_readlink,sys32_readlink_wrapper) /* 85 */
SYSCALL(sys_uselib,sys_uselib,sys32_uselib_wrapper)
SYSCALL(sys_swapon,sys_swapon,sys32_swapon_wrapper)
SYSCALL(sys_readlink,sys_readlink,compat_sys_readlink) /* 85 */
SYSCALL(sys_uselib,sys_uselib,compat_sys_uselib)
SYSCALL(sys_swapon,sys_swapon,compat_sys_swapon)
SYSCALL(sys_reboot,sys_reboot,sys32_reboot_wrapper)
SYSCALL(sys_ni_syscall,sys_ni_syscall,old32_readdir_wrapper) /* old readdir syscall */
SYSCALL(sys_old_mmap,sys_old_mmap,compat_sys_s390_old_mmap) /* 90 */