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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-12-17 18:23:10 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-12-17 18:23:31 +0000
commit5a059f1ac0ed0c937257027aed5da50241f5ec2b (patch)
tree492d0a8bf452167baa9b941edc1d8edf9577ed7b /arch/arm
parent99f5e9718185f07458ae70c2282c2153a2256c91 (diff)
[ARM] Add more syscalls
Add: sys_unshare sys_set_robust_list sys_get_robust_list sys_splice sys_arm_sync_file_range sys_tee sys_vmsplice sys_move_pages sys_getcpu Special note about sys_arm_sync_file_range(), which is implemented as: asmlinkage long sys_arm_sync_file_range(int fd, unsigned int flags, loff_t offset, loff_t nbytes) { return sys_sync_file_range(fd, offset, nbytes, flags); } We can't export sys_sync_file_range() directly on ARM because the argument list someone picked does not fit in the available registers. Would be nice if... there was an arch maintainer review mechanism for new syscalls before they hit the kernel. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/kernel/calls.S24
-rw-r--r--arch/arm/kernel/sys_arm.c13
2 files changed, 31 insertions, 6 deletions
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index e8f74363328..f7598cbc7ec 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -110,7 +110,7 @@
CALL(sys_ni_syscall) /* was sys_profil */
CALL(sys_statfs)
/* 100 */ CALL(sys_fstatfs)
- CALL(sys_ni_syscall)
+ CALL(sys_ni_syscall) /* sys_ioperm */
CALL(OBSOLETE(ABI(sys_socketcall, sys_oabi_socketcall)))
CALL(sys_syslog)
CALL(sys_setitimer)
@@ -132,7 +132,7 @@
/* 120 */ CALL(sys_clone_wrapper)
CALL(sys_setdomainname)
CALL(sys_newuname)
- CALL(sys_ni_syscall)
+ CALL(sys_ni_syscall) /* modify_ldt */
CALL(sys_adjtimex)
/* 125 */ CALL(sys_mprotect)
CALL(sys_sigprocmask)
@@ -146,7 +146,7 @@
CALL(sys_bdflush)
/* 135 */ CALL(sys_sysfs)
CALL(sys_personality)
- CALL(sys_ni_syscall) /* CALL(_sys_afs_syscall) */
+ CALL(sys_ni_syscall) /* reserved for afs_syscall */
CALL(sys_setfsuid16)
CALL(sys_setfsgid16)
/* 140 */ CALL(sys_llseek)
@@ -175,7 +175,7 @@
CALL(sys_arm_mremap)
CALL(sys_setresuid16)
/* 165 */ CALL(sys_getresuid16)
- CALL(sys_ni_syscall)
+ CALL(sys_ni_syscall) /* vm86 */
CALL(sys_ni_syscall) /* was sys_query_module */
CALL(sys_poll)
CALL(sys_nfsservctl)
@@ -197,8 +197,8 @@
/* 185 */ CALL(sys_capset)
CALL(sys_sigaltstack_wrapper)
CALL(sys_sendfile)
- CALL(sys_ni_syscall)
- CALL(sys_ni_syscall)
+ CALL(sys_ni_syscall) /* getpmsg */
+ CALL(sys_ni_syscall) /* putpmsg */
/* 190 */ CALL(sys_vfork_wrapper)
CALL(sys_getrlimit)
CALL(sys_mmap2)
@@ -344,6 +344,18 @@
CALL(sys_readlinkat)
CALL(sys_fchmodat)
CALL(sys_faccessat)
+/* 335 */ CALL(sys_ni_syscall) /* eventually pselect6 */
+ CALL(sys_ni_syscall) /* eventually ppoll */
+ CALL(sys_unshare)
+ CALL(sys_set_robust_list)
+ CALL(sys_get_robust_list)
+/* 340 */ CALL(sys_splice)
+ CALL(sys_arm_sync_file_range)
+ CALL(sys_tee)
+ CALL(sys_vmsplice)
+ CALL(sys_move_pages)
+/* 345 */ CALL(sys_getcpu)
+ CALL(sys_ni_syscall) /* eventually epoll_pwait */
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 00c18d35913..3d4fcbc1627 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -328,3 +328,16 @@ asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
{
return sys_fadvise64_64(fd, offset, len, advice);
}
+
+/*
+ * Yet more syscall fsckage - we can't fit sys_sync_file_range's
+ * arguments into the available registers with EABI. So, let's
+ * create an ARM specific syscall for this which has _sane_
+ * arguments. (This incidentally also has an ABI-independent
+ * argument layout.)
+ */
+asmlinkage long sys_arm_sync_file_range(int fd, unsigned int flags,
+ loff_t offset, loff_t nbytes)
+{
+ return sys_sync_file_range(fd, offset, nbytes, flags);
+}