diff options
Diffstat (limited to 'lib/libc/sys/connect.2')
| -rw-r--r-- | lib/libc/sys/connect.2 | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/lib/libc/sys/connect.2 b/lib/libc/sys/connect.2 index eb38ab320b4b..a6d7c7133165 100644 --- a/lib/libc/sys/connect.2 +++ b/lib/libc/sys/connect.2 @@ -68,6 +68,30 @@ only once; datagram sockets may use multiple times to change their association. Datagram sockets may dissolve the association by connecting to an invalid address, such as a null address. +.Sh IMPLEMENTATION NOTES +.Pp +In the non-threaded library +.Fn connect +is implemented as the +.Va connect +syscall. +.Pp +In the threaded library, the +.Va connect +syscall is assembled to +.Fn _thread_sys_connect +and +.Fn connect +is implemented as a function which locks +.Va s +for read and write, then calls +.Fn _thread_sys_connect . +If the call to +.Fn _thread_sys_connect +would block, a context switch is performed. Before returning, +.Fn connect +unlocks +.Va s . .Sh RETURN VALUES If the connection or binding succeeds, 0 is returned. Otherwise a -1 is returned, and a more specific error @@ -79,10 +103,10 @@ The call fails if: .Bl -tag -width EADDRNOTAVAILABB .It Bq Er EBADF -.Fa S +.Fa s is not a valid descriptor. .It Bq Er ENOTSOCK -.Fa S +.Fa s is a descriptor for a file, not a socket. .It Bq Er EADDRNOTAVAIL The specified address is not available on this machine. |