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| author | Jens Axboe <axboe@suse.de> | 2006-04-11 15:51:17 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-04-11 15:51:17 +0200 |
| commit | 70524490ee2ea1bbf6cee6c106597b3ac25a3fc2 (patch) | |
| tree | c61dd500035bc3e0dea364777de1b7a58b41a75c /include/asm-x86_64/unistd.h | |
| parent | cbb7e577e732f576b9f399bc2600bdc0626c68dc (diff) | |
| download | blackbird-op-linux-70524490ee2ea1bbf6cee6c106597b3ac25a3fc2.tar.gz blackbird-op-linux-70524490ee2ea1bbf6cee6c106597b3ac25a3fc2.zip | |
[PATCH] splice: add support for sys_tee()
Basically an in-kernel implementation of tee, which uses splice and the
pipe buffers as an intelligent way to pass data around by reference.
Where the user space tee consumes the input and produces a stdout and
file output, this syscall merely duplicates the data inside a pipe to
another pipe. No data is copied, the output just grabs a reference to the
input pipe data.
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'include/asm-x86_64/unistd.h')
| -rw-r--r-- | include/asm-x86_64/unistd.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-x86_64/unistd.h b/include/asm-x86_64/unistd.h index f21ff2c1e960..d86494e23b63 100644 --- a/include/asm-x86_64/unistd.h +++ b/include/asm-x86_64/unistd.h @@ -611,8 +611,10 @@ __SYSCALL(__NR_set_robust_list, sys_set_robust_list) __SYSCALL(__NR_get_robust_list, sys_get_robust_list) #define __NR_splice 275 __SYSCALL(__NR_splice, sys_splice) +#define __NR_tee 276 +__SYSCALL(__NR_tee, sys_tee) -#define __NR_syscall_max __NR_splice +#define __NR_syscall_max __NR_tee #ifndef __NO_STUBS |
