From 87369a8d190a182ee087cec5164e4c9586b0d80e Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Wed, 28 Oct 2015 09:27:47 +0100
Subject: [PATCH] libv4lsyscall-priv.h: Use off_t instead of __off_t

__off_t is a kernel internal symbol, which happens to be user-visible
with glibc, but not necessarily with other C libraries such as
musl. In v4l-utils code, it's mainly used for the mmap() prototype,
but the mmap() manpage really uses off_t, not __off_t.

Switching from __off_t to off_t allows the code to build properly with
musl.

Patch upstream at
http://git.linuxtv.org/v4l-utils.git/commit/?id=a6ff0635f7ed3400eec25039b96002b60a44209b.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 lib/libv4l1/v4l1compat.c               |  3 +--
 lib/libv4l2/v4l2convert.c              |  5 ++---
 lib/libv4lconvert/libv4lsyscall-priv.h | 11 +++--------
 3 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/lib/libv4l1/v4l1compat.c b/lib/libv4l1/v4l1compat.c
index 97e8c4e..e5c9e56 100644
--- a/lib/libv4l1/v4l1compat.c
+++ b/lib/libv4l1/v4l1compat.c
@@ -29,7 +29,6 @@
 #include <stdarg.h>
 #include <fcntl.h>
 #include <libv4l1.h>
-#include "../libv4lconvert/libv4lsyscall-priv.h" /* for __off_t */
 
 #include <sys/ioctl.h>
 #include <sys/mman.h>
@@ -119,7 +118,7 @@ LIBV4L_PUBLIC ssize_t read(int fd, void *buffer, size_t n)
 }
 
 LIBV4L_PUBLIC void *mmap(void *start, size_t length, int prot, int flags, int fd,
-		__off_t offset)
+		off_t offset)
 {
 	return v4l1_mmap(start, length, prot, flags, fd, offset);
 }
diff --git a/lib/libv4l2/v4l2convert.c b/lib/libv4l2/v4l2convert.c
index a6dc30e..7b7e253 100644
--- a/lib/libv4l2/v4l2convert.c
+++ b/lib/libv4l2/v4l2convert.c
@@ -39,7 +39,6 @@
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
-#include "../libv4lconvert/libv4lsyscall-priv.h"
 #include <linux/videodev2.h>
 #include <libv4l2.h>
 
@@ -151,14 +150,14 @@ LIBV4L_PUBLIC ssize_t read(int fd, void *buffer, size_t n)
 }
 
 LIBV4L_PUBLIC void *mmap(void *start, size_t length, int prot, int flags, int fd,
-		__off_t offset)
+		off_t offset)
 {
 	return v4l2_mmap(start, length, prot, flags, fd, offset);
 }
 
 #if defined(linux) && defined(__GLIBC__)
 LIBV4L_PUBLIC void *mmap64(void *start, size_t length, int prot, int flags, int fd,
-		__off64_t offset)
+		off64_t offset)
 {
 	return v4l2_mmap(start, length, prot, flags, fd, offset);
 }
diff --git a/lib/libv4lconvert/libv4lsyscall-priv.h b/lib/libv4lconvert/libv4lsyscall-priv.h
index f548fb2..f87eff4 100644
--- a/lib/libv4lconvert/libv4lsyscall-priv.h
+++ b/lib/libv4lconvert/libv4lsyscall-priv.h
@@ -59,11 +59,6 @@
 #define	_IOC_SIZE(cmd) IOCPARM_LEN(cmd)
 #define	MAP_ANONYMOUS MAP_ANON
 #define	MMAP2_PAGE_SHIFT 0
-typedef off_t __off_t;
-#endif
-
-#if defined(ANDROID)
-typedef off_t __off_t;
 #endif
 
 #undef SYS_OPEN
@@ -95,15 +90,15 @@ typedef off_t __off_t;
 #if defined(__FreeBSD__)
 #define SYS_MMAP(addr, len, prot, flags, fd, off) \
 	__syscall(SYS_mmap, (void *)(addr), (size_t)(len), \
-			(int)(prot), (int)(flags), (int)(fd), (__off_t)(off))
+			(int)(prot), (int)(flags), (int)(fd), (off_t)(off))
 #elif defined(__FreeBSD_kernel__)
 #define SYS_MMAP(addr, len, prot, flags, fd, off) \
 	syscall(SYS_mmap, (void *)(addr), (size_t)(len), \
-			(int)(prot), (int)(flags), (int)(fd), (__off_t)(off))
+			(int)(prot), (int)(flags), (int)(fd), (off_t)(off))
 #else
 #define SYS_MMAP(addr, len, prot, flags, fd, off) \
 	syscall(SYS_mmap2, (void *)(addr), (size_t)(len), \
-			(int)(prot), (int)(flags), (int)(fd), (__off_t)((off) >> MMAP2_PAGE_SHIFT))
+			(int)(prot), (int)(flags), (int)(fd), (off_t)((off) >> MMAP2_PAGE_SHIFT))
 #endif
 
 #define SYS_MUNMAP(addr, len) \
-- 
2.6.2