diff options
Diffstat (limited to 'lib/libc/sys/mmap.2')
| -rw-r--r-- | lib/libc/sys/mmap.2 | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2 index 855a032cae53..f66a13eed0a5 100644 --- a/lib/libc/sys/mmap.2 +++ b/lib/libc/sys/mmap.2 @@ -29,9 +29,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" @(#)mmap.2 8.1 (Berkeley) 6/4/93 +.\" @(#)mmap.2 8.4 (Berkeley) 5/11/95 .\" -.Dd "June 4, 1993" +.Dd "May 11, 1995" .Dt MMAP 2 .Os BSD 4 .Sh NAME @@ -54,11 +54,10 @@ bytes to be mapped from the object described by starting at byte offset .Fa offset . If -.Fa offset -or .Fa len is not a multiple of the pagesize, the mapped region may extend past the specified range. +Any such extension beyond the end of the mapped object will be zero-filled. .Pp If .Fa addr @@ -104,9 +103,10 @@ the following values: Map anonymous memory not associated with any specific file. The file descriptor used for creating .Dv MAP_ANON -regions is used only for -naming, and may be specified as \-1 if no name is associated with the -region. +must be \-1. +The +.Fa offset +parameter is ignored. .\".It Dv MAP_FILE .\"Mapped from a regular file or character-special device memory. .It Dv MAP_FIXED @@ -165,12 +165,10 @@ parameter and .Fa fd was not open for reading. The flags -.Dv PROT_WRITE , .Dv MAP_SHARED and -.Dv MAP_WRITE -were specified as part -of the +.Dv PROT_WRITE +were specified as part of the .Fa flags and .Fa prot @@ -183,7 +181,6 @@ is not a valid open file descriptor. .It Bq Er EINVAL .Dv MAP_FIXED was specified and the -.Fa addr parameter was not page aligned, or part of the desired address space resides out of the valid address space for a user process. .It Bq Er EINVAL |