MAINTAINER=	ports@FreeBSD.org

MAINTAINER=	ports@shiori.com.br

- 

Changes `lfp_sendfile' so it returns the number of bytes sent,

mimicking Linux sendfile(2).

Submited to upstream by Vasily Postnicov (shamaz.mazum@gmail.com),

see https://github.com/sionescu/libfixposix/pull/18.

--- src/lib/sendfile.c.orig	2018-02-19 22:24:10 UTC

+++ src/lib/sendfile.c

@@ -38,6 +38,7 @@ int sendfile(int, int, off_t, off_t *, void *, int);

 #endif

 #include <stdlib.h>

+#include <errno.h>

 DSO_PUBLIC ssize_t

 lfp_sendfile(int out_fd, int in_fd, off_t offset, size_t nbytes)

@@ -46,18 +47,21 @@ lfp_sendfile(int out_fd, int in_fd, off_t offset, size

 # if defined(__linux__)

     off_t off = offset;

     return (ssize_t) sendfile(out_fd, in_fd, &off, nbytes);

-# elif defined(__FreeBSD__)

-    return (ssize_t) sendfile(in_fd, out_fd, offset, nbytes, NULL, NULL, SF_MNOWAIT);

-# elif defined(__DragonFly__)

-    return (ssize_t) sendfile(in_fd, out_fd, offset, nbytes, NULL, NULL, 0);

+# elif defined(__FreeBSD__) || defined(__DragonFly__)

+    off_t sbytes;

+    int res = sendfile(in_fd, out_fd, offset, nbytes, NULL, &sbytes, 0);

+    if (res == 0) { return sbytes; }

+    return res;

 # elif defined(__APPLE__)

     off_t len = nbytes;

-    return (ssize_t) sendfile(in_fd, out_fd, offset, &len, NULL, 0);

+    int res = sendfile(in_fd, out_fd, offset, &len, NULL, 0);

+    if (res == 0) { return len; }

+    return -1;

 # else

 #  error "It appears that this OS has sendfile(), but LFP doesn't use it at the moment"

 #  error "Please send an email to iolib-devel@common-lisp.net"

 # endif

 #else

-    return ENOSYS;

+    SYSERR(ENOSYS);

 #endif

 }