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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2009-01-23 16:40:27 +0100
committerHeiko Carstens <heiko.carstens@de.ibm.com>2009-01-23 16:40:29 +0100
commite34a6280419a24297e6603075ac5af6ce9f13562 (patch)
treefe0c259274e9d57faa60930044edb39453e5e39b /arch
parent179cb81aa1e9dc5444f678a6dd4dbb90c60322e1 (diff)
[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 <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/compat_wrapper.S38
-rw-r--r--arch/s390/kernel/syscalls.S10
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)