sendmail/src/conf.c

1451 #define LA_INT		2	/* read kmem for avenrun; interpret as long */
1452 #define LA_FLOAT	3	/* read kmem for avenrun; interpret as float */
1455 #define LA_SHORT	6	/* read kmem for avenrun; interpret as short */
1465 #define LA_LONGLONG	17 /* read kmem for avenrun; interpret as long long */
1501 # define _PATH_KMEM	"/dev/kmem"
1532 	static int kmem = -1;
1548 	if (kmem < 0)
1578 		kmem = open(_PATH_KMEM, 0, 0);
1579 		if (kmem < 0)
1582 				sm_dprintf("getla: open(/dev/kmem): %s\n",
1586 		if ((j = fcntl(kmem, F_GETFD, 0)) < 0 ||
1587 		    fcntl(kmem, F_SETFD, j | FD_CLOEXEC) < 0)
1590 				sm_dprintf("getla: fcntl(/dev/kmem, FD_CLOEXEC): %s\n",
1592 			(void) close(kmem);
1593 			kmem = -1;
1600 	if (lseek(kmem, (off_t) Nl[X_AVENRUN].n_value, SEEK_SET) == -1 ||
1601 	    read(kmem, (char *) avenrun, sizeof(avenrun)) != sizeof(avenrun))
1657 	static int kmem = -1;
1661 	if (kmem < 0)
1663 		kmem = open("/dev/kmem", 0, 0);
1664 		if (kmem < 0)
1667 				sm_dprintf("getla: open(/dev/kmem): %s\n",
1671 		if ((j = fcntl(kmem, F_GETFD, 0)) < 0 ||
1672 		    fcntl(kmem, F_SETFD, j | FD_CLOEXEC) < 0)
1675 				sm_dprintf("getla: fcntl(/dev/kmem, FD_CLOEXEC): %s\n",
1677 			(void) close(kmem);
1678 			kmem = -1;
1685 	if (ioctl(kmem, MIOC_READKSYM, &mirk) < 0)
1896 	static int kmem = -1;
1899 	if (kmem < 0)
1901 		kmem = open(_PATH_KMEM, 0, 0);
1902 		if (kmem < 0)
1909 		if ((j = fcntl(kmem, F_GETFD, 0)) < 0 ||
1910 		    fcntl(kmem, F_SETFD, j | FD_CLOEXEC) < 0)
1913 				sm_dprintf("getla: fcntl(/dev/kmem, FD_CLOEXEC): %s\n",
1915 			(void) close(kmem);
1916 			kmem = -1;
1921 	if (lseek(kmem, CAST_SYSMP(sysmp(MP_KERNADDR, MPKA_AVENRUN)), SEEK_SET)
1923 	    read(kmem, (char *) avenrun, sizeof(avenrun)) != sizeof(avenrun))
2592 	static int kmem = -1;
2624 	if (kmem < 0 || kmempid != CurrentPid)
2626 		if (kmem >= 0)
2627 			(void) close(kmem);
2628 		kmem = open(_PATH_KMEM, O_RDWR, 0);
2629 		if (kmem < 0)
2631 		if ((j = fcntl(kmem, F_GETFD, 0)) < 0 ||
2632 		    fcntl(kmem, F_SETFD, j | FD_CLOEXEC) < 0)
2634 			(void) close(kmem);
2635 			kmem = -1;
2642 	if (lseek(kmem, (off_t) seek_off, SEEK_SET) == seek_off)
2643 		(void) write(kmem, buf, PSARGSZ);