diff options
Diffstat (limited to 'lib/libc/sys/poll.2')
| -rw-r--r-- | lib/libc/sys/poll.2 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/libc/sys/poll.2 b/lib/libc/sys/poll.2 index df306e793449..10268118e041 100644 --- a/lib/libc/sys/poll.2 +++ b/lib/libc/sys/poll.2 @@ -41,7 +41,9 @@ .Ft int .Fn poll "struct pollfd fds[]" "nfds_t nfds" "int timeout" .Sh DESCRIPTION -.Fn Poll +The +.Fn poll +system call examines a set of file descriptors to see if some of them are ready for I/O. The @@ -128,7 +130,9 @@ is zero, then .Fn poll will return without blocking. .Sh RETURN VALUES -.Fn Poll +The +.Fn poll +system call returns the number of descriptors that are ready for I/O, or -1 if an error occured. If the time limit expires, .Fn poll @@ -136,7 +140,7 @@ returns 0. If .Fn poll returns with an error, -including one due to an interrupted call, +including one due to an interrupted system call, the .Fa fds array will be unmodified. @@ -185,7 +189,7 @@ defined for compatibility with existing software. .Sh HISTORY The .Fn poll -function call appeared in +function appeared in .At V . This manual page and the core of the implementation was taken from .Nx . |