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authorIngo Molnar <mingo@elte.hu>2006-04-10 09:18:58 -0400
committerJens Axboe <axboe@suse.de>2006-04-10 09:18:58 -0400
commit529565dcb1581c9a1e3f6df1c1763ca3e0f0d512 (patch)
treee8069cc17f887ad86f8dee0d96640a2f19bf4112 /include
parent3a326a2ce88e71d00ac0d133e314a3342a7709f8 (diff)
[PATCH] splice: add optional input and output offsets
add optional input and output offsets to sys_splice(), for seekable file descriptors: asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, size_t len, unsigned int flags); semantics are straightforward: f_pos will be updated with the offset provided by user-space, before the splice transfer is about to begin. Providing a NULL offset pointer means the existing f_pos will be used (and updated in situ). Providing an offset for a pipe results in -ESPIPE. Providing an invalid offset pointer results in -EFAULT. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/syscalls.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 5717147596b6..4c292faa70c9 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -569,8 +569,11 @@ asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename,
569asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, 569asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
570 int flags, int mode); 570 int flags, int mode);
571asmlinkage long sys_unshare(unsigned long unshare_flags); 571asmlinkage long sys_unshare(unsigned long unshare_flags);
572asmlinkage long sys_splice(int fdin, int fdout, size_t len, 572
573 unsigned int flags); 573asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
574 int fd_out, loff_t __user *off_out,
575 size_t len, unsigned int flags);
576
574asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, 577asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
575 int flags); 578 int flags);
576 579