Author: emaste
Date: Tue Jun 30 13:38:49 2009
New Revision: 195191
URL: http://svn.freebsd.org/changeset/base/195191
Log:
Add FIONSPACE from NetBSD. FIONSPACE is provided so that programs may
easily determine how much space is left in the send queue; they do not
need to know the send queue size.
NetBSD revisions:
sys_socket.c r1.41, 1.42
filio.h r1.9
Obtained from: NetBSD
Approved by: re (kensmith)
Modified:
head/sys/kern/sys_socket.c
head/sys/sys/filio.h
Modified: head/sys/kern/sys_socket.c
==============================================================================
--- head/sys/kern/sys_socket.c Tue Jun 30 13:38:14 2009 (r195190)
+++ head/sys/kern/sys_socket.c Tue Jun 30 13:38:49 2009 (r195191)
@@ -174,6 +174,14 @@ soo_ioctl(struct file *fp, u_long cmd, v
*(int *)data = so->so_snd.sb_cc;
break;
+ case FIONSPACE:
+ if ((so->so_snd.sb_hiwat < so->so_snd.sb_cc) ||
+ (so->so_snd.sb_mbmax < so->so_snd.sb_mbcnt))
+ *(int *)data = 0;
+ else
+ *(int *)data = sbspace(&so->so_snd);
+ break;
+
case FIOSETOWN:
error = fsetown(*(int *)data, &so->so_sigio);
break;
Modified: head/sys/sys/filio.h
==============================================================================
--- head/sys/sys/filio.h Tue Jun 30 13:38:14 2009 (r195190)
+++ head/sys/sys/filio.h Tue Jun 30 13:38:49 2009 (r195191)
@@ -56,6 +56,7 @@ struct fiodgname_arg {
};
#define FIODGNAME _IOW('f', 120, struct fiodgname_arg) /* get
dev. name */
#define FIONWRITE _IOR('f', 119, int) /* get # bytes (yet) to
write */
+#define FIONSPACE _IOR('f', 118, int) /* get space in send
queue */
/* Handle lseek SEEK_DATA and SEEK_HOLE for holey file knowledge. */
#define FIOSEEKDATA _IOWR('f', 97, off_t) /* SEEK_DATA */
#define FIOSEEKHOLE _IOWR('f', 98, off_t) /* SEEK_HOLE */
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