acd4fdb68b
zero a buffer in io_passfd so valgrind does not complain when we pass it to a syscall (which did not use the uninitialized parts anyway)
20 lines
619 B
Groff
20 lines
619 B
Groff
.TH mmap_read 3
|
|
.SH NAME
|
|
mmap_read \- memory map a file for reading
|
|
.SH SYNTAX
|
|
.B #include <mmap.h>
|
|
|
|
char* \fBmmap_read\fP(const char* \fIfilename\fR,size_t* \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"
|
|
mmap_unmap(3)
|