diff options
Diffstat (limited to 'lib/libc/sys/sendfile.2')
| -rw-r--r-- | lib/libc/sys/sendfile.2 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/libc/sys/sendfile.2 b/lib/libc/sys/sendfile.2 index 87b9bac..254f1630 100644 --- a/lib/libc/sys/sendfile.2 +++ b/lib/libc/sys/sendfile.2 @@ -46,7 +46,8 @@ out a stream socket specified by descriptor .Pp The .Fa offset -argument specifies where to begin in the file. The +argument specifies where to begin in the file. +The .Fa nbytes argument specifies how many bytes of the file should be sent, with 0 having the special meaning of send until the end of file has been reached. @@ -67,9 +68,11 @@ The .Fa headers and .Fa tailers -pointers, if non-NULL, point to arrays of struct iovec structures. See the +pointers, if non-NULL, point to arrays of struct iovec structures. +See the .Fn writev -system call for information on the iovec structure. The number of iovecs in these +system call for information on the iovec structure. +The number of iovecs in these arrays is specified by .Fa hdr_cnt and @@ -85,7 +88,8 @@ argument is currently undefined and should be specified as 0. .Pp When using a socket marked for non-blocking I/O, .Fn sendfile -may send fewer bytes than requested. In this case, the number of bytes successfully +may send fewer bytes than requested. +In this case, the number of bytes successfully written is returned in .Fa *sbytes (if specified), |
