From e34a6280419a24297e6603075ac5af6ce9f13562 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 23 Jan 2009 16:40:27 +0100 Subject: [S390] Add missing compat system call wrappers. Add wrapper functions for the following compat system calls: * readahead * sendfile64 * tkill * tgkill * keyctl This ensures that the high order bits of the parameter registers are correctly sign extended. Signed-off-by: Michael Holzheu Signed-off-by: Heiko Carstens --- arch/s390/kernel/compat_wrapper.S | 38 ++++++++++++++++++++++++++++++++++++++ arch/s390/kernel/syscalls.S | 10 +++++----- 2 files changed, 43 insertions(+), 5 deletions(-) diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 6035cd20c7a..62c706eb0de 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -1767,3 +1767,41 @@ sys_dup3_wrapper: sys_epoll_create1_wrapper: lgfr %r2,%r2 # int jg sys_epoll_create1 # branch to system call + + .globl sys32_readahead_wrapper +sys32_readahead_wrapper: + lgfr %r2,%r2 # int + llgfr %r3,%r3 # u32 + llgfr %r4,%r4 # u32 + lgfr %r5,%r5 # s32 + jg sys32_readahead # branch to system call + + .globl sys32_sendfile64_wrapper +sys32_sendfile64_wrapper: + lgfr %r2,%r2 # int + lgfr %r3,%r3 # int + llgtr %r4,%r4 # compat_loff_t * + lgfr %r5,%r5 # s32 + jg sys32_sendfile64 # branch to system call + + .globl sys_tkill_wrapper +sys_tkill_wrapper: + lgfr %r2,%r2 # pid_t + lgfr %r3,%r3 # int + jg sys_tkill # branch to system call + + .globl sys_tgkill_wrapper +sys_tgkill_wrapper: + lgfr %r2,%r2 # pid_t + lgfr %r3,%r3 # pid_t + lgfr %r4,%r4 # int + jg sys_tgkill # branch to system call + + .globl compat_sys_keyctl_wrapper +compat_sys_keyctl_wrapper: + llgfr %r2,%r2 # u32 + llgfr %r3,%r3 # u32 + llgfr %r4,%r4 # u32 + llgfr %r5,%r5 # u32 + llgfr %r6,%r6 # u32 + jg compat_sys_keyctl # branch to system call diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 3e18d8a5e61..fe5b25a988a 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -230,8 +230,8 @@ SYSCALL(sys_mincore,sys_mincore,sys32_mincore_wrapper) SYSCALL(sys_madvise,sys_madvise,sys32_madvise_wrapper) SYSCALL(sys_getdents64,sys_getdents64,sys32_getdents64_wrapper) /* 220 */ SYSCALL(sys_fcntl64,sys_ni_syscall,compat_sys_fcntl64_wrapper) -SYSCALL(sys_readahead,sys_readahead,sys32_readahead) -SYSCALL(sys_sendfile64,sys_ni_syscall,sys32_sendfile64) +SYSCALL(sys_readahead,sys_readahead,sys32_readahead_wrapper) +SYSCALL(sys_sendfile64,sys_ni_syscall,sys32_sendfile64_wrapper) SYSCALL(sys_setxattr,sys_setxattr,sys32_setxattr_wrapper) SYSCALL(sys_lsetxattr,sys_lsetxattr,sys32_lsetxattr_wrapper) /* 225 */ SYSCALL(sys_fsetxattr,sys_fsetxattr,sys32_fsetxattr_wrapper) @@ -245,11 +245,11 @@ SYSCALL(sys_removexattr,sys_removexattr,sys32_removexattr_wrapper) SYSCALL(sys_lremovexattr,sys_lremovexattr,sys32_lremovexattr_wrapper) SYSCALL(sys_fremovexattr,sys_fremovexattr,sys32_fremovexattr_wrapper) /* 235 */ SYSCALL(sys_gettid,sys_gettid,sys_gettid) -SYSCALL(sys_tkill,sys_tkill,sys_tkill) +SYSCALL(sys_tkill,sys_tkill,sys_tkill_wrapper) SYSCALL(sys_futex,sys_futex,compat_sys_futex_wrapper) SYSCALL(sys_sched_setaffinity,sys_sched_setaffinity,sys32_sched_setaffinity_wrapper) SYSCALL(sys_sched_getaffinity,sys_sched_getaffinity,sys32_sched_getaffinity_wrapper) /* 240 */ -SYSCALL(sys_tgkill,sys_tgkill,sys_tgkill) +SYSCALL(sys_tgkill,sys_tgkill,sys_tgkill_wrapper) NI_SYSCALL /* reserved for TUX */ SYSCALL(sys_io_setup,sys_io_setup,sys32_io_setup_wrapper) SYSCALL(sys_io_destroy,sys_io_destroy,sys32_io_destroy_wrapper) @@ -288,7 +288,7 @@ SYSCALL(sys_mq_getsetattr,sys_mq_getsetattr,compat_sys_mq_getsetattr_wrapper) SYSCALL(sys_kexec_load,sys_kexec_load,compat_sys_kexec_load_wrapper) SYSCALL(sys_add_key,sys_add_key,compat_sys_add_key_wrapper) SYSCALL(sys_request_key,sys_request_key,compat_sys_request_key_wrapper) -SYSCALL(sys_keyctl,sys_keyctl,compat_sys_keyctl) /* 280 */ +SYSCALL(sys_keyctl,sys_keyctl,compat_sys_keyctl_wrapper) /* 280 */ SYSCALL(sys_waitid,sys_waitid,compat_sys_waitid_wrapper) SYSCALL(sys_ioprio_set,sys_ioprio_set,sys_ioprio_set_wrapper) SYSCALL(sys_ioprio_get,sys_ioprio_get,sys_ioprio_get_wrapper) -- cgit v1.2.3