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-rw-r--r--lib/libc/sys/mmap.27
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index 4849973..b633cb1 100644
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -105,7 +105,7 @@ The file descriptor used for creating
must be \-1.
The
.Fa offset
-argument is ignored.
+argument must be 0.
.\".It Dv MAP_FILE
.\"Mapped from a regular file or character-special device memory.
.It Dv MAP_ANONYMOUS
@@ -316,6 +316,11 @@ was equal to zero.
was specified and the
.Fa fd
argument was not -1.
+.It Bq Er EINVAL
+.Dv MAP_ANON
+was specified and the
+.Fa offset
+argument was not 0.
.It Bq Er ENODEV
.Dv MAP_ANON
has not been specified and
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