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author | Ingo Molnar <mingo@elte.hu> | 2006-04-10 17:18:58 +0400 |
---|---|---|
committer | Jens Axboe <axboe@suse.de> | 2006-04-10 17:18:58 +0400 |
commit | 529565dcb1581c9a1e3f6df1c1763ca3e0f0d512 (patch) | |
tree | e8069cc17f887ad86f8dee0d96640a2f19bf4112 /include | |
parent | 3a326a2ce88e71d00ac0d133e314a3342a7709f8 (diff) | |
download | linux-529565dcb1581c9a1e3f6df1c1763ca3e0f0d512.tar.xz |
[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.h | 7 |
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, asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, int flags, int mode); asmlinkage long sys_unshare(unsigned long unshare_flags); -asmlinkage long sys_splice(int fdin, int fdout, size_t len, - unsigned int flags); + +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); + asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, int flags); |