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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-12-17 13:23:10 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-12-17 13:23:31 -0500
commit5a059f1ac0ed0c937257027aed5da50241f5ec2b (patch)
tree492d0a8bf452167baa9b941edc1d8edf9577ed7b
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>
-rw-r--r--arch/arm/kernel/calls.S24
-rw-r--r--arch/arm/kernel/sys_arm.c13
-rw-r--r--include/asm-arm/unistd.h12
3 files changed, 43 insertions, 6 deletions
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index e8f74363328c..f7598cbc7ec5 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -110,7 +110,7 @@
110 CALL(sys_ni_syscall) /* was sys_profil */ 110 CALL(sys_ni_syscall) /* was sys_profil */
111 CALL(sys_statfs) 111 CALL(sys_statfs)
112/* 100 */ CALL(sys_fstatfs) 112/* 100 */ CALL(sys_fstatfs)
113 CALL(sys_ni_syscall) 113 CALL(sys_ni_syscall) /* sys_ioperm */
114 CALL(OBSOLETE(ABI(sys_socketcall, sys_oabi_socketcall))) 114 CALL(OBSOLETE(ABI(sys_socketcall, sys_oabi_socketcall)))
115 CALL(sys_syslog) 115 CALL(sys_syslog)
116 CALL(sys_setitimer) 116 CALL(sys_setitimer)
@@ -132,7 +132,7 @@
132/* 120 */ CALL(sys_clone_wrapper) 132/* 120 */ CALL(sys_clone_wrapper)
133 CALL(sys_setdomainname) 133 CALL(sys_setdomainname)
134 CALL(sys_newuname) 134 CALL(sys_newuname)
135 CALL(sys_ni_syscall) 135 CALL(sys_ni_syscall) /* modify_ldt */
136 CALL(sys_adjtimex) 136 CALL(sys_adjtimex)
137/* 125 */ CALL(sys_mprotect) 137/* 125 */ CALL(sys_mprotect)
138 CALL(sys_sigprocmask) 138 CALL(sys_sigprocmask)
@@ -146,7 +146,7 @@
146 CALL(sys_bdflush) 146 CALL(sys_bdflush)
147/* 135 */ CALL(sys_sysfs) 147/* 135 */ CALL(sys_sysfs)
148 CALL(sys_personality) 148 CALL(sys_personality)
149 CALL(sys_ni_syscall) /* CALL(_sys_afs_syscall) */ 149 CALL(sys_ni_syscall) /* reserved for afs_syscall */
150 CALL(sys_setfsuid16) 150 CALL(sys_setfsuid16)
151 CALL(sys_setfsgid16) 151 CALL(sys_setfsgid16)
152/* 140 */ CALL(sys_llseek) 152/* 140 */ CALL(sys_llseek)
@@ -175,7 +175,7 @@
175 CALL(sys_arm_mremap) 175 CALL(sys_arm_mremap)
176 CALL(sys_setresuid16) 176 CALL(sys_setresuid16)
177/* 165 */ CALL(sys_getresuid16) 177/* 165 */ CALL(sys_getresuid16)
178 CALL(sys_ni_syscall) 178 CALL(sys_ni_syscall) /* vm86 */
179 CALL(sys_ni_syscall) /* was sys_query_module */ 179 CALL(sys_ni_syscall) /* was sys_query_module */
180 CALL(sys_poll) 180 CALL(sys_poll)
181 CALL(sys_nfsservctl) 181 CALL(sys_nfsservctl)
@@ -197,8 +197,8 @@
197/* 185 */ CALL(sys_capset) 197/* 185 */ CALL(sys_capset)
198 CALL(sys_sigaltstack_wrapper) 198 CALL(sys_sigaltstack_wrapper)
199 CALL(sys_sendfile) 199 CALL(sys_sendfile)
200 CALL(sys_ni_syscall) 200 CALL(sys_ni_syscall) /* getpmsg */
201 CALL(sys_ni_syscall) 201 CALL(sys_ni_syscall) /* putpmsg */
202/* 190 */ CALL(sys_vfork_wrapper) 202/* 190 */ CALL(sys_vfork_wrapper)
203 CALL(sys_getrlimit) 203 CALL(sys_getrlimit)
204 CALL(sys_mmap2) 204 CALL(sys_mmap2)
@@ -344,6 +344,18 @@
344 CALL(sys_readlinkat) 344 CALL(sys_readlinkat)
345 CALL(sys_fchmodat) 345 CALL(sys_fchmodat)
346 CALL(sys_faccessat) 346 CALL(sys_faccessat)
347/* 335 */ CALL(sys_ni_syscall) /* eventually pselect6 */
348 CALL(sys_ni_syscall) /* eventually ppoll */
349 CALL(sys_unshare)
350 CALL(sys_set_robust_list)
351 CALL(sys_get_robust_list)
352/* 340 */ CALL(sys_splice)
353 CALL(sys_arm_sync_file_range)
354 CALL(sys_tee)
355 CALL(sys_vmsplice)
356 CALL(sys_move_pages)
357/* 345 */ CALL(sys_getcpu)
358 CALL(sys_ni_syscall) /* eventually epoll_pwait */
347#ifndef syscalls_counted 359#ifndef syscalls_counted
348.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls 360.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
349#define syscalls_counted 361#define syscalls_counted
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 00c18d35913c..3d4fcbc16276 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,
328{ 328{
329 return sys_fadvise64_64(fd, offset, len, advice); 329 return sys_fadvise64_64(fd, offset, len, advice);
330} 330}
331
332/*
333 * Yet more syscall fsckage - we can't fit sys_sync_file_range's
334 * arguments into the available registers with EABI. So, let's
335 * create an ARM specific syscall for this which has _sane_
336 * arguments. (This incidentally also has an ABI-independent
337 * argument layout.)
338 */
339asmlinkage long sys_arm_sync_file_range(int fd, unsigned int flags,
340 loff_t offset, loff_t nbytes)
341{
342 return sys_sync_file_range(fd, offset, nbytes, flags);
343}
diff --git a/include/asm-arm/unistd.h b/include/asm-arm/unistd.h
index 32b06eb52819..97e7060000cf 100644
--- a/include/asm-arm/unistd.h
+++ b/include/asm-arm/unistd.h
@@ -360,6 +360,18 @@
360#define __NR_readlinkat (__NR_SYSCALL_BASE+332) 360#define __NR_readlinkat (__NR_SYSCALL_BASE+332)
361#define __NR_fchmodat (__NR_SYSCALL_BASE+333) 361#define __NR_fchmodat (__NR_SYSCALL_BASE+333)
362#define __NR_faccessat (__NR_SYSCALL_BASE+334) 362#define __NR_faccessat (__NR_SYSCALL_BASE+334)
363 /* 335 for pselect6 */
364 /* 336 for ppoll */
365#define __NR_unshare (__NR_SYSCALL_BASE+337)
366#define __NR_set_robust_list (__NR_SYSCALL_BASE+338)
367#define __NR_get_robust_list (__NR_SYSCALL_BASE+339)
368#define __NR_splice (__NR_SYSCALL_BASE+340)
369#define __NR_arm_sync_file_range (__NR_SYSCALL_BASE+341)
370#define __NR_tee (__NR_SYSCALL_BASE+342)
371#define __NR_vmsplice (__NR_SYSCALL_BASE+343)
372#define __NR_move_pages (__NR_SYSCALL_BASE+344)
373#define __NR_getcpu (__NR_SYSCALL_BASE+345)
374 /* 346 for epoll_pwait */
363 375
364/* 376/*
365 * The following SWIs are ARM private. 377 * The following SWIs are ARM private.