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1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. The Berkeley software License Agreement ! 4: * specifies the terms and conditions for redistribution. ! 5: */ ! 6: ! 7: #ifndef lint ! 8: static char sccsid[] = "@(#)disks.c 5.5 (Berkeley) 5/29/89"; ! 9: #endif not lint ! 10: ! 11: #include "systat.h" ! 12: #include <sys/buf.h> ! 13: #include <ctype.h> ! 14: #include <paths.h> ! 15: ! 16: static struct nlist nlst[] = { ! 17: #define X_DK_NDRIVE 0 ! 18: { "_dk_ndrive" }, ! 19: #define X_DK_WPMS 1 ! 20: { "_dk_wpms" }, ! 21: #ifdef vax ! 22: #define X_MBDINIT (X_DK_WPMS+1) ! 23: { "_mbdinit" }, ! 24: #define X_UBDINIT (X_DK_WPMS+2) ! 25: { "_ubdinit" }, ! 26: #endif ! 27: #ifdef sun ! 28: #define X_MBDINIT (X_DK_WPMS+1) ! 29: { "_mbdinit" }, ! 30: #endif ! 31: #ifdef tahoe ! 32: #define X_VBDINIT (X_DK_WPMS+1) ! 33: { "_vbdinit" }, ! 34: #endif ! 35: { "" }, ! 36: }; ! 37: ! 38: dkinit() ! 39: { ! 40: register int i; ! 41: register char *cp; ! 42: static int once = 0; ! 43: static char buf[1024]; ! 44: ! 45: if (once) ! 46: return(1); ! 47: nlist(_PATH_UNIX, nlst); ! 48: if (nlst[X_DK_NDRIVE].n_value == 0) { ! 49: error("dk_ndrive undefined in kernel"); ! 50: return(0); ! 51: } ! 52: dk_ndrive = getw(nlst[X_DK_NDRIVE].n_value); ! 53: if (dk_ndrive <= 0) { ! 54: error("dk_ndrive=%d according to %s", dk_ndrive, _PATH_UNIX); ! 55: return(0); ! 56: } ! 57: dk_mspw = (float *)calloc(dk_ndrive, sizeof (float)); ! 58: lseek(kmem, nlst[X_DK_WPMS].n_value, L_SET); ! 59: { ! 60: long *wpms = (long *)calloc(dk_ndrive, sizeof(long)); ! 61: read(kmem, wpms, dk_ndrive * sizeof (long)); ! 62: for (i = 0; i < dk_ndrive; i++) ! 63: *(dk_mspw + i) = (*(wpms + i) == 0)? 0.0: ! 64: (float) 1.0 / *(wpms + i); ! 65: free(wpms); ! 66: } ! 67: dr_name = (char **)calloc(dk_ndrive, sizeof (char *)); ! 68: dk_select = (int *)calloc(dk_ndrive, sizeof (int)); ! 69: for (cp = buf, i = 0; i < dk_ndrive; i++) { ! 70: dr_name[i] = cp; ! 71: sprintf(dr_name[i], "dk%d", i); ! 72: cp += strlen(dr_name[i]) + 1; ! 73: if (dk_mspw[i] != 0.0) ! 74: dk_select[i] = 1; ! 75: } ! 76: if (!read_names()) { ! 77: free(dr_name); ! 78: free(dk_select); ! 79: free(dk_mspw); ! 80: return(0); ! 81: } ! 82: once = 1; ! 83: return(1); ! 84: } ! 85: ! 86: dkcmd(cmd, args) ! 87: char *cmd, *args; ! 88: { ! 89: if (prefix(cmd, "display") || prefix(cmd, "add")) { ! 90: dkselect(args, 1, dk_select); ! 91: return (1); ! 92: } ! 93: if (prefix(cmd, "ignore") || prefix(cmd, "delete")) { ! 94: dkselect(args, 0, dk_select); ! 95: return (1); ! 96: } ! 97: if (prefix(cmd, "drives")) { ! 98: register int i; ! 99: ! 100: move(CMDLINE, 0); clrtoeol(); ! 101: for (i = 0; i < dk_ndrive; i++) ! 102: if (dk_mspw[i] != 0.0) ! 103: printw("%s ", dr_name[i]); ! 104: return (1); ! 105: } ! 106: return (0); ! 107: } ! 108: ! 109: #define steal(where, var) \ ! 110: lseek(kmem, where, L_SET); read(kmem, &var, sizeof var); ! 111: ! 112: #ifdef vax ! 113: #include <vaxuba/ubavar.h> ! 114: #include <vaxmba/mbavar.h> ! 115: ! 116: read_names() ! 117: { ! 118: struct mba_device mdev; ! 119: struct mba_driver mdrv; ! 120: short two_char; ! 121: char *cp = (char *)&two_char; ! 122: struct uba_device udev; ! 123: struct uba_driver udrv; ! 124: register struct mba_device *mp; ! 125: register struct uba_device *up; ! 126: ! 127: mp = (struct mba_device *)nlst[X_MBDINIT].n_value; ! 128: up = (struct uba_device *)nlst[X_UBDINIT].n_value; ! 129: if (mp == 0 && up == 0) { ! 130: error("Disk init info not in namelist\n"); ! 131: return(0); ! 132: } ! 133: if (mp) for (;;) { ! 134: steal(mp++, mdev); ! 135: if (mdev.mi_driver == 0) ! 136: break; ! 137: if (mdev.mi_dk < 0 || mdev.mi_alive == 0) ! 138: continue; ! 139: steal(mdev.mi_driver, mdrv); ! 140: steal(mdrv.md_dname, two_char); ! 141: sprintf(dr_name[mdev.mi_dk], "%c%c%d", ! 142: cp[0], cp[1], mdev.mi_unit); ! 143: } ! 144: if (up) for (;;) { ! 145: steal(up++, udev); ! 146: if (udev.ui_driver == 0) ! 147: break; ! 148: if (udev.ui_dk < 0 || udev.ui_alive == 0) ! 149: continue; ! 150: steal(udev.ui_driver, udrv); ! 151: steal(udrv.ud_dname, two_char); ! 152: sprintf(dr_name[udev.ui_dk], "%c%c%d", ! 153: cp[0], cp[1], udev.ui_unit); ! 154: } ! 155: return(1); ! 156: } ! 157: #endif ! 158: ! 159: #ifdef sun ! 160: #include <sundev/mbvar.h> ! 161: ! 162: read_names() ! 163: { ! 164: static int once = 0; ! 165: struct mb_device mdev; ! 166: struct mb_driver mdrv; ! 167: short two_char; ! 168: char *cp = (char *) &two_char; ! 169: register struct mb_device *mp; ! 170: ! 171: mp = (struct mb_device *)nlst[X_MBDINIT].n_value; ! 172: if (mp == 0) { ! 173: error("Disk init info not in namelist\n"); ! 174: return(0); ! 175: } ! 176: for (;;) { ! 177: steal(mp++, mdev); ! 178: if (mdev.md_driver == 0) ! 179: break; ! 180: if (mdev.md_dk < 0 || mdev.md_alive == 0) ! 181: continue; ! 182: steal(mdev.md_driver, mdrv); ! 183: steal(mdrv.mdr_dname, two_char); ! 184: sprintf(dr_name[mdev.md_dk], "%c%c%d", ! 185: cp[0], cp[1], mdev.md_unit); ! 186: } ! 187: return(1); ! 188: } ! 189: #endif ! 190: ! 191: #ifdef tahoe ! 192: #include <tahoevba/vbavar.h> ! 193: ! 194: /* ! 195: * Read the drive names out of kmem. ! 196: */ ! 197: read_names() ! 198: { ! 199: struct vba_device udev, *up; ! 200: struct vba_driver udrv; ! 201: short two_char; ! 202: char *cp = (char *)&two_char; ! 203: ! 204: up = (struct vba_device *) nlst[X_VBDINIT].n_value; ! 205: if (up == 0) { ! 206: fprintf(stderr, "vmstat: Disk init info not in namelist\n"); ! 207: exit(1); ! 208: } ! 209: for (;;) { ! 210: steal(up++, udev); ! 211: if (udev.ui_driver == 0) ! 212: break; ! 213: if (udev.ui_dk < 0 || udev.ui_alive == 0) ! 214: continue; ! 215: steal(udev.ui_driver, udrv); ! 216: steal(udrv.ud_dname, two_char); ! 217: sprintf(dr_name[udev.ui_dk], "%c%c%d", ! 218: cp[0], cp[1], udev.ui_unit); ! 219: } ! 220: } ! 221: #endif ! 222: ! 223: dkselect(args, truefalse, selections) ! 224: char *args; ! 225: int truefalse, selections[]; ! 226: { ! 227: register char *cp; ! 228: register int i; ! 229: char *index(); ! 230: ! 231: cp = index(args, '\n'); ! 232: if (cp) ! 233: *cp = '\0'; ! 234: for (;;) { ! 235: for (cp = args; *cp && isspace(*cp); cp++) ! 236: ; ! 237: args = cp; ! 238: for (; *cp && !isspace(*cp); cp++) ! 239: ; ! 240: if (*cp) ! 241: *cp++ = '\0'; ! 242: if (cp - args == 0) ! 243: break; ! 244: for (i = 0; i < dk_ndrive; i++) ! 245: if (strcmp(args, dr_name[i]) == 0) { ! 246: if (dk_mspw[i] != 0.0) ! 247: selections[i] = truefalse; ! 248: else ! 249: error("%s: drive not configured", ! 250: dr_name[i]); ! 251: break; ! 252: } ! 253: if (i >= dk_ndrive) ! 254: error("%s: unknown drive", args); ! 255: args = cp; ! 256: } ! 257: }
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