Differential D21191 Diff 60813 head/sbin/swapon/swapon.c

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head/sbin/swapon/swapon.c

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static char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93";		static char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */		#endif /* not lint */
#endif		#endif
#include <sys/cdefs.h>		#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");		__FBSDID("$FreeBSD$");

#include <sys/param.h>		#include <sys/param.h>
#include <sys/disk.h>		#include <sys/disk.h>
		#include <sys/disklabel.h>
#include <sys/mdioctl.h>		#include <sys/mdioctl.h>
#include <sys/stat.h>		#include <sys/stat.h>
#include <sys/sysctl.h>		#include <sys/sysctl.h>
#include <sys/wait.h>		#include <sys/wait.h>
#include <vm/vm_param.h>		#include <vm/vm_param.h>

#include <err.h>		#include <err.h>
#include <errno.h>		#include <errno.h>
▲ Show 20 Lines • Show All 700 Lines • ▼ Show 20 Lines	swapon_trim(const char *name)
if (S_ISREG(sb.st_mode))		if (S_ISREG(sb.st_mode))
sz = sb.st_size;		sz = sb.st_size;
else if (S_ISCHR(sb.st_mode)) {		else if (S_ISCHR(sb.st_mode)) {
if (ioctl(fd, DIOCGMEDIASIZE, &sz) != 0)		if (ioctl(fd, DIOCGMEDIASIZE, &sz) != 0)
err(1, "ioctl(DIOCGMEDIASIZE)");		err(1, "ioctl(DIOCGMEDIASIZE)");
} else		} else
errx(1, "%s has an invalid file type", name);		errx(1, "%s has an invalid file type", name);
/* Trim the device. */		/* Trim the device. */
ioarg[0] = 0;		ioarg[0] = BBSIZE;
ioarg[1] = sz;		ioarg[1] = sz - BBSIZE;
if (ioctl(fd, DIOCGDELETE, ioarg) != 0)		if (ioctl(fd, DIOCGDELETE, ioarg) != 0)
warn("ioctl(DIOCGDELETE)");		warn("ioctl(DIOCGDELETE)");

/* Start using the device for swapping, creating a second consumer. */		/* Start using the device for swapping, creating a second consumer. */
error = swapon(name);		error = swapon(name);

/*		/*
* Do not close the device until the swap pager has attempted to create		* Do not close the device until the swap pager has attempted to create
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