Differential D15743 Diff 45251 head/stand/common/devopen.c

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head/stand/common/devopen.c

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	#include <sys/cdefs.h>			#include <sys/cdefs.h>
	__FBSDID("$FreeBSD$");			__FBSDID("$FreeBSD$");

	#include <stand.h>			#include <stand.h>
	#include <string.h>			#include <string.h>

	#include "bootstrap.h"			#include "bootstrap.h"

				#ifdef LOADER_GELI_SUPPORT
				#include "geliboot.h"
				#endif

	int			int
	devopen(struct open_file f, const char fname, const char **file)			devopen(struct open_file f, const char fname, const char **file)
	{			{
	struct devdesc *dev;			struct devdesc *dev;
	int result;			int result;

	result = archsw.arch_getdev((void **)&dev, fname, file);			result = archsw.arch_getdev((void **)&dev, fname, file);
	if (result)			if (result)
	return (result);			return (result);

	/* point to device-specific data so that device open can use it */			/* point to device-specific data so that device open can use it */
				f->f_dev = dev->d_dev;
	f->f_devdata = dev;			f->f_devdata = dev;
	result = dev->d_dev->dv_open(f, dev);			result = dev->d_dev->dv_open(f, dev);
	if (result != 0) {			if (result != 0) {
	f->f_devdata = NULL;			f->f_devdata = NULL;
	free(dev);			free(dev);
	return (result);			return (result);
	}			}

	/* reference the devsw entry from the open_file structure */			#ifdef LOADER_GELI_SUPPORT
	f->f_dev = dev->d_dev;			/*
				* If f->f_dev is geli-encrypted and we can decrypt it (will prompt for
				* pw if needed), this will attach the geli code to the open_file by
				* replacing f->f_dev and f_devdata with pointers to a geli_devdesc.
				*/
				if (f->f_dev->dv_type == DEVT_DISK) {
				geli_probe_and_attach(f);
				}
				#endif

	return (0);			return (0);
	}			}

	int			int
	devclose(struct open_file *f)			devclose(struct open_file *f)
	{			{

	if (f->f_devdata != NULL) {			if (f->f_devdata != NULL) {
	free(f->f_devdata);			free(f->f_devdata);
	}			}
	return (0);			return (0);
	}			}