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document error signalling through (void*)0 return code.

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This commit is contained in:
leitner 2002-01-29 19:44:42 +00:00
parent 41e7e1f2a2
commit 95c129c81a
3 changed files with 6 additions and 0 deletions
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2
mmap/mmap_private.3
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@ -16,5 +16,7 @@ will not be written to disk.
The file is unmapped by the operating system if the process terminates.
It can also be manually unmapped by calling \fBmunmap\fR from
<sys/mman.h>.
If the file could not be opened or mapped, (void*)0 is returned.
.SH "SEE ALSO"
munmap(2)

2
mmap/mmap_read.3
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@ -13,5 +13,7 @@ and returns a pointer to the mapped file.
The file is unmapped by the operating system if the process terminates.
It can also be manually unmapped by calling \fBmunmap\fR from
<sys/mman.h>.
If the file could not be opened or mapped, (void*)0 is returned.
.SH "SEE ALSO"
munmap(2)

2
mmap/mmap_shared.3
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@ -20,5 +20,7 @@ It can also be manually unmapped by calling \fBmunmap\fR from
To write changes to disk immediately, you can use msync from
<sys/mman.h>.
If the file could not be opened or mapped, (void*)0 is returned.
.SH "SEE ALSO"
munmap(2), msync(2)