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authorsobomax <sobomax@FreeBSD.org>2005-07-15 11:37:25 +0000
committersobomax <sobomax@FreeBSD.org>2005-07-15 11:37:25 +0000
commit759020427718ed6983077f75bcf4c668593afddf (patch)
tree8a306fe2a5d4d3ad577f52ff9a6538ab373ed199
parent98c7fd96bfa2d57f467d8bda4b59002c6aa28265 (diff)
downloadFreeBSD-src-759020427718ed6983077f75bcf4c668593afddf.zip
FreeBSD-src-759020427718ed6983077f75bcf4c668593afddf.tar.gz
Document the fact that if MAP_FIXED request has been successful it
replaces any previous mapping to the same address. Obtained from: IEEE Std 1003.1, 2004 Edition
-rw-r--r--lib/libc/sys/mmap.27
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index 798396e..522c559 100644
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -123,6 +123,13 @@ If
is specified,
.Fa addr
must be a multiple of the pagesize.
+If a MAP_FIXED request is successful, the mapping established by
+.Fn mmap
+replaces any previous mappings for the process' pages in the range from
+.Fa addr
+to
+.Fa addr +
+.Fa len .
Use of this option is discouraged.
.It Dv MAP_HASSEMAPHORE
Notify the kernel that the region may contain semaphores and that special
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