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authorAl Viro <viro@zeniv.linux.org.uk>2013-01-21 15:16:58 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-03-03 22:46:22 -0500
commit4a0fd5bf0fd0795af8f1be3b261f5cf146a4cb9b (patch)
tree8f8efa46a8e4e3fc1c3163f5021aff4f94aaa7fd
parent07fe6e00f6cca6fef85a14a1dc3ed4f2e35d3f0b (diff)
downloadlinux-linaro-stable-4a0fd5bf0fd0795af8f1be3b261f5cf146a4cb9b.tar.gz
teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long
... and convert a bunch of SYSCALL_DEFINE ones to SYSCALL_DEFINE<n>, killing the boilerplate crap around them. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--arch/s390/kernel/sys_s390.c14
-rw-r--r--fs/dcookies.c9
-rw-r--r--fs/notify/fanotify/fanotify_user.c17
-rw-r--r--fs/open.c28
-rw-r--r--fs/read_write.c24
-rw-r--r--fs/sync.c26
-rw-r--r--include/linux/syscalls.h5
-rw-r--r--mm/fadvise.c18
-rw-r--r--mm/readahead.c9
9 files changed, 23 insertions, 127 deletions
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index d0964d22adb5..23eb222c1658 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -132,19 +132,9 @@ SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
* to
* %r2: fd, %r3: mode, %r4/%r5: offset, 96(%r15)-103(%r15): len
*/
-SYSCALL_DEFINE(s390_fallocate)(int fd, int mode, loff_t offset,
- u32 len_high, u32 len_low)
+SYSCALL_DEFINE5(s390_fallocate, int, fd, int, mode, loff_t, offset,
+ u32, len_high, u32, len_low)
{
return sys_fallocate(fd, mode, offset, ((u64)len_high << 32) | len_low);
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_s390_fallocate(long fd, long mode, loff_t offset,
- long len_high, long len_low)
-{
- return SYSC_s390_fallocate((int) fd, (int) mode, offset,
- (u32) len_high, (u32) len_low);
-}
-SYSCALL_ALIAS(sys_s390_fallocate, SyS_s390_fallocate);
-#endif
-
#endif
diff --git a/fs/dcookies.c b/fs/dcookies.c
index 17c779967828..f08375b97ffb 100644
--- a/fs/dcookies.c
+++ b/fs/dcookies.c
@@ -145,7 +145,7 @@ out:
/* And here is where the userspace process can look up the cookie value
* to retrieve the path.
*/
-SYSCALL_DEFINE(lookup_dcookie)(u64 cookie64, char __user * buf, size_t len)
+SYSCALL_DEFINE3(lookup_dcookie, u64, cookie64, char __user *, buf, size_t, len)
{
unsigned long cookie = (unsigned long)cookie64;
int err = -EINVAL;
@@ -201,13 +201,6 @@ out:
mutex_unlock(&dcookie_mutex);
return err;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_lookup_dcookie(u64 cookie64, long buf, long len)
-{
- return SYSC_lookup_dcookie(cookie64, (char __user *) buf, (size_t) len);
-}
-SYSCALL_ALIAS(sys_lookup_dcookie, SyS_lookup_dcookie);
-#endif
static int dcookie_init(void)
{
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 5d8444268a16..d0be29fa94cf 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -755,9 +755,9 @@ out_destroy_group:
return fd;
}
-SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags,
- __u64 mask, int dfd,
- const char __user * pathname)
+SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags,
+ __u64, mask, int, dfd,
+ const char __user *, pathname)
{
struct inode *inode = NULL;
struct vfsmount *mnt = NULL;
@@ -857,17 +857,6 @@ fput_and_out:
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fanotify_mark(long fanotify_fd, long flags, __u64 mask,
- long dfd, long pathname)
-{
- return SYSC_fanotify_mark((int) fanotify_fd, (unsigned int) flags,
- mask, (int) dfd,
- (const char __user *) pathname);
-}
-SYSCALL_ALIAS(sys_fanotify_mark, SyS_fanotify_mark);
-#endif
-
/*
* fanotify_user_setup - Our initialization function. Note that we cannot return
* error because we have compiled-in VFS hooks. So an (unlikely) failure here
diff --git a/fs/open.c b/fs/open.c
index 68354466879f..a53922450448 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -212,32 +212,18 @@ COMPAT_SYSCALL_DEFINE2(ftruncate, unsigned int, fd, compat_ulong_t, length)
/* LFS versions of truncate are only needed on 32 bit machines */
#if BITS_PER_LONG == 32
-SYSCALL_DEFINE(truncate64)(const char __user * path, loff_t length)
+SYSCALL_DEFINE2(truncate64, const char __user *, path, loff_t, length)
{
return do_sys_truncate(path, length);
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_truncate64(long path, loff_t length)
-{
- return SYSC_truncate64((const char __user *) path, length);
-}
-SYSCALL_ALIAS(sys_truncate64, SyS_truncate64);
-#endif
-SYSCALL_DEFINE(ftruncate64)(unsigned int fd, loff_t length)
+SYSCALL_DEFINE2(ftruncate64, unsigned int, fd, loff_t, length)
{
long ret = do_sys_ftruncate(fd, length, 0);
/* avoid REGPARM breakage on x86: */
asmlinkage_protect(2, ret, fd, length);
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_ftruncate64(long fd, loff_t length)
-{
- return SYSC_ftruncate64((unsigned int) fd, length);
-}
-SYSCALL_ALIAS(sys_ftruncate64, SyS_ftruncate64);
-#endif
#endif /* BITS_PER_LONG == 32 */
@@ -299,7 +285,7 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
return ret;
}
-SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
+SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
{
struct fd f = fdget(fd);
int error = -EBADF;
@@ -311,14 +297,6 @@ SYSCALL_DEFINE(fallocate)(int fd, int mode, loff_t offset, loff_t len)
return error;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fallocate(long fd, long mode, loff_t offset, loff_t len)
-{
- return SYSC_fallocate((int)fd, (int)mode, offset, len);
-}
-SYSCALL_ALIAS(sys_fallocate, SyS_fallocate);
-#endif
-
/*
* access() needs to use the real uid/gid, not the effective uid/gid.
* We do this by temporarily clearing all FS-related capabilities and
diff --git a/fs/read_write.c b/fs/read_write.c
index a698eff457fb..dcfd58d95f44 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -487,8 +487,8 @@ SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf,
return ret;
}
-SYSCALL_DEFINE(pread64)(unsigned int fd, char __user *buf,
- size_t count, loff_t pos)
+SYSCALL_DEFINE4(pread64, unsigned int, fd, char __user *, buf,
+ size_t, count, loff_t, pos)
{
struct fd f;
ssize_t ret = -EBADF;
@@ -506,17 +506,9 @@ SYSCALL_DEFINE(pread64)(unsigned int fd, char __user *buf,
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_pread64(long fd, long buf, long count, loff_t pos)
-{
- return SYSC_pread64((unsigned int) fd, (char __user *) buf,
- (size_t) count, pos);
-}
-SYSCALL_ALIAS(sys_pread64, SyS_pread64);
-#endif
-SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf,
- size_t count, loff_t pos)
+SYSCALL_DEFINE4(pwrite64, unsigned int, fd, const char __user *, buf,
+ size_t, count, loff_t, pos)
{
struct fd f;
ssize_t ret = -EBADF;
@@ -534,14 +526,6 @@ SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf,
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_pwrite64(long fd, long buf, long count, loff_t pos)
-{
- return SYSC_pwrite64((unsigned int) fd, (const char __user *) buf,
- (size_t) count, pos);
-}
-SYSCALL_ALIAS(sys_pwrite64, SyS_pwrite64);
-#endif
/*
* Reduce an iovec's length in-place. Return the resulting number of segments
diff --git a/fs/sync.c b/fs/sync.c
index 2c5d6639a66a..905f3f6b3d85 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -283,8 +283,8 @@ EXPORT_SYMBOL(generic_write_sync);
* already-instantiated disk blocks, there are no guarantees here that the data
* will be available after a crash.
*/
-SYSCALL_DEFINE(sync_file_range)(int fd, loff_t offset, loff_t nbytes,
- unsigned int flags)
+SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
+ unsigned int, flags)
{
int ret;
struct fd f;
@@ -365,29 +365,11 @@ out_put:
out:
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_sync_file_range(long fd, loff_t offset, loff_t nbytes,
- long flags)
-{
- return SYSC_sync_file_range((int) fd, offset, nbytes,
- (unsigned int) flags);
-}
-SYSCALL_ALIAS(sys_sync_file_range, SyS_sync_file_range);
-#endif
/* It would be nice if people remember that not all the world's an i386
when they introduce new system calls */
-SYSCALL_DEFINE(sync_file_range2)(int fd, unsigned int flags,
- loff_t offset, loff_t nbytes)
+SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags,
+ loff_t, offset, loff_t, nbytes)
{
return sys_sync_file_range(fd, offset, nbytes, flags);
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_sync_file_range2(long fd, long flags,
- loff_t offset, loff_t nbytes)
-{
- return SYSC_sync_file_range2((int) fd, (unsigned int) flags,
- offset, nbytes);
-}
-SYSCALL_ALIAS(sys_sync_file_range2, SyS_sync_file_range2);
-#endif
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index f9411f0c1c80..3e07b92efbf6 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -96,9 +96,10 @@ struct sigaltstack;
#define __MAP(n,...) __MAP##n(__VA_ARGS__)
#define __SC_DECL(t, a) t a
-#define __SC_LONG(t, a) long a
+#define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
+#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
#define __SC_CAST(t, a) (t) a
-#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(sizeof(type) > sizeof(long))
+#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
#ifdef CONFIG_FTRACE_SYSCALLS
#define __SC_STR_ADECL(t, a) #a
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 7e092689a12a..3bcfd81db45e 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -25,7 +25,7 @@
* POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could
* deactivate the pages and clear PG_Referenced.
*/
-SYSCALL_DEFINE(fadvise64_64)(int fd, loff_t offset, loff_t len, int advice)
+SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
{
struct fd f = fdget(fd);
struct address_space *mapping;
@@ -145,26 +145,12 @@ out:
fdput(f);
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fadvise64_64(long fd, loff_t offset, loff_t len, long advice)
-{
- return SYSC_fadvise64_64((int) fd, offset, len, (int) advice);
-}
-SYSCALL_ALIAS(sys_fadvise64_64, SyS_fadvise64_64);
-#endif
#ifdef __ARCH_WANT_SYS_FADVISE64
-SYSCALL_DEFINE(fadvise64)(int fd, loff_t offset, size_t len, int advice)
+SYSCALL_DEFINE4(fadvise64, int, fd, loff_t, offset, size_t, len, int, advice)
{
return sys_fadvise64_64(fd, offset, len, advice);
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_fadvise64(long fd, loff_t offset, long len, long advice)
-{
- return SYSC_fadvise64((int) fd, offset, (size_t)len, (int)advice);
-}
-SYSCALL_ALIAS(sys_fadvise64, SyS_fadvise64);
-#endif
#endif
diff --git a/mm/readahead.c b/mm/readahead.c
index 7963f2391236..daed28dd5830 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -576,7 +576,7 @@ do_readahead(struct address_space *mapping, struct file *filp,
return 0;
}
-SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
+SYSCALL_DEFINE3(readahead, int, fd, loff_t, offset, size_t, count)
{
ssize_t ret;
struct fd f;
@@ -595,10 +595,3 @@ SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
}
return ret;
}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_readahead(long fd, loff_t offset, long count)
-{
- return SYSC_readahead((int) fd, offset, (size_t) count);
-}
-SYSCALL_ALIAS(sys_readahead, SyS_readahead);
-#endif