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Groff

.TH mmap_read 3
.SH NAME
mmap_read \- memory map a file for reading
.SH SYNTAX
.B #include <mmap.h>
extern char* \fBmmap_read\fP(const char* \fIfilename\fR,unsigned long* \fIfilesize\fR);
.SH DESCRIPTION
mmap_read opens \fIfilename\fR for reading, maps the whole file into
memory, closes the file, writes the length of the file to \fIfilesize\fR
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)