minix/drivers/memory/local.h

/*
local defines and declarations 
*/

extern unsigned char _binary_imgrd_mfs_start, _binary_imgrd_mfs_end;

#define	imgrd	&_binary_imgrd_mfs_start
#define	imgrd_size \
	(((size_t) &_binary_imgrd_mfs_end - (size_t)&_binary_imgrd_mfs_start))
Initial root filesystem is now on a ramdisk that is part of the image. 2006-02-15 12:18:21 +01:00			`/*`
			`local defines and declarations`
			`*/`

VM: full munmap complete munmap implementation; single-page references made a general munmap() implementation possible to write cleanly. . memory: let the MIOCRAMSIZE ioctl set the imgrd device size (but only to 0) . let the ramdisk command set sizes to 0 . use this command to set /dev/imgrd to 0 after mounting /usr in /etc/rc, so the boot time ramdisk is freed (about 4MB currently) 2012-09-18 13:17:52 +02:00			`extern unsigned char _binary_imgrd_mfs_start, _binary_imgrd_mfs_end;`
Use objcopy to build ramdisk object . during build, uses much less memory, disk space, and time . lets us throw out bintoc 2012-01-17 16:04:58 +01:00
VM: full munmap complete munmap implementation; single-page references made a general munmap() implementation possible to write cleanly. . memory: let the MIOCRAMSIZE ioctl set the imgrd device size (but only to 0) . let the ramdisk command set sizes to 0 . use this command to set /dev/imgrd to 0 after mounting /usr in /etc/rc, so the boot time ramdisk is freed (about 4MB currently) 2012-09-18 13:17:52 +02:00			`#define imgrd &_binary_imgrd_mfs_start`
Use objcopy to build ramdisk object . during build, uses much less memory, disk space, and time . lets us throw out bintoc 2012-01-17 16:04:58 +01:00			`#define imgrd_size \`
VM: full munmap complete munmap implementation; single-page references made a general munmap() implementation possible to write cleanly. . memory: let the MIOCRAMSIZE ioctl set the imgrd device size (but only to 0) . let the ramdisk command set sizes to 0 . use this command to set /dev/imgrd to 0 after mounting /usr in /etc/rc, so the boot time ramdisk is freed (about 4MB currently) 2012-09-18 13:17:52 +02:00			`(((size_t) &_binary_imgrd_mfs_end - (size_t)&_binary_imgrd_mfs_start))`