Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

24 lines
823 B

.TH mmap_readat 3
mmap_readat \- memory map a file for reading
.B #include <mmap.h>
char* \fBmmap_readat\fP(const char* \fIfilename\fR,size_t* \fIfilesize\fR,int \fIdirfd\fR);
mmap_readat 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.
If \fIfilename\fR is a relative path and \fIdirfd\fR is not AT_FDCWD
(defined in fcntl.h),
\fIfilename\fR is interpreted relative to \fIdirfd\fR, which must be an
open directory.
The file is unmapped by the operating system if the process terminates.
It can also be manually unmapped by calling \fBmunmap\fR from
If the file could not be opened or mapped, (void*)0 is returned.