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- /* This file contains system-specific functions for ESIX.
- * The program pfdisk.c calls these routines.
- * Note that ESIX can't use the generic Sys.V/386 version of
- * this file because it uses ioctl calls to access the
- * primary boot sector. Other systems provide a device which
- * maps onto the whole disk (starting with the boot sector).
- */
- #include <stdio.h>
- #include <fcntl.h>
- #include <sys/types.h>
- #include <sys/vtoc.h>
-
- #define extern
- #include "sysdep.h"
- #undef extern
-
- int usage(prog) /* print a usage message */
- char *prog; /* program name */
- {
- fprintf(stderr,"Usage: %s dev\n\t%s\n", prog,
- "where 'dev' is the device name, i.e. /dev/rdsk/0s0");
- }
-
- void getGeometry(dev, c, h, s)
- char *dev; /* device name */
- unsigned *c,*h,*s; /* cyls, heads, sectors */
- {
- int devfd, retval;
- struct disk_parms dp;
-
- devfd = open(dev, O_RDONLY, 0);
- if (devfd < 0) {
- fprintf(stderr,"%s: can't open for reading\n", dev);
- return;
- }
- retval = ioctl(devfd, V_GETPARMS, &dp);
- close(devfd);
- if (retval < 0) {
- fprintf(stderr,"%s: can't get disk parameters\n", dev);
- return;
- }
- if (dp.dp_type != DPT_WINI) {
- fprintf(stderr,"%s: not a Winchester Disk\n", dev);
- return;
- }
- *c = dp.dp_cyls;
- *h = dp.dp_heads;
- *s = dp.dp_sectors;
- }
-
- int getFile(name, buf, len) /* read file into buffer */
- char *name, *buf;
- int len;
- { /* (open, read, close) */
- int devfd, retval;
-
- devfd = open(name, O_RDONLY, 0);
- if (devfd < 0) {
- fprintf(stderr,"%s: can't open for reading\n", name);
- return(devfd);
- }
- retval = read(devfd, buf, len);
- if (retval < 0)
- fprintf(stderr,"%s: read failed\n", name);
- close(devfd);
- return(retval);
- }
-
- int putFile(name, buf, len) /* write buffer to file */
- char *name, *buf;
- int len;
- { /* (open, write, close) */
- int devfd, retval;
-
- devfd = open(name, O_WRONLY|O_CREAT, 0666);
- if (devfd < 0) {
- fprintf(stderr,"%s: can't open for writing\n", name);
- return(devfd);
- }
- retval = write(devfd, buf, len);
- if (retval < 0)
- fprintf(stderr,"%s: write failed\n", name);
- close(devfd);
- return(retval);
- }
-
- int getBBlk(name, buf) /* read Boot Block into buffer */
- char *name, *buf;
- { /* (open, read, close) */
- int devfd, retval;
- struct absio abs;
-
- devfd = open(name, O_RDONLY, 0);
- if (devfd < 0) {
- fprintf(stderr,"%s: can't open for reading\n", name);
- return(devfd);
- }
- abs.abs_sec = 0; /* the primary boot sector */
- abs.abs_buf = buf;
- retval = ioctl(devfd, V_RDABS, &abs);
- if (retval < 0)
- fprintf(stderr,"%s: read failed\n", name);
- close(devfd);
- return(retval);
- }
-
- int putBBlk(name, buf) /* write buffer to Boot Block */
- char *name, *buf;
- { /* (open, write, close) */
- int devfd, retval;
- struct absio abs;
-
- devfd = open(name, O_WRONLY, 0);
- if (devfd < 0) {
- fprintf(stderr,"%s: can't open for writing\n", name);
- return(devfd);
- }
- abs.abs_sec = 0; /* the primary boot sector */
- abs.abs_buf = buf;
- retval = ioctl(devfd, V_WRABS, &abs);
- if (retval < 0)
- fprintf(stderr,"%s: write failed\n", name);
- close(devfd);
- return(retval);
- }
-