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authorpjd <pjd@FreeBSD.org>2007-04-05 21:10:53 +0000
committerpjd <pjd@FreeBSD.org>2007-04-05 21:10:53 +0000
commit4718e01f98485788a9f7b2defc77a984780db526 (patch)
treec358a7e9b774044c343bcf2b36dc569901065d03 /sys/sys/filio.h
parent7e73da14eb8410d6878c1e60cdb665d8a8c74c47 (diff)
downloadFreeBSD-src-4718e01f98485788a9f7b2defc77a984780db526.zip
FreeBSD-src-4718e01f98485788a9f7b2defc77a984780db526.tar.gz
Implement SEEK_DATA and SEEK_HOLE extensions to lseek(2) as found in
OpenSolaris. For more information please refer to: http://blogs.sun.com/bonwick/entry/seek_hole_and_seek_data
Diffstat (limited to 'sys/sys/filio.h')
-rw-r--r--sys/sys/filio.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/sys/filio.h b/sys/sys/filio.h
index 8f2731a..5f13288 100644
--- a/sys/sys/filio.h
+++ b/sys/sys/filio.h
@@ -55,5 +55,8 @@ struct fiodgname_arg {
void *buf;
};
#define FIODGNAME _IOW('f', 120, struct fiodgname_arg) /* get dev. name */
+/* 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 */
#endif /* !_SYS_FILIO_H_ */
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