1 /*- 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 06/06/93"; 10 #endif /* not lint */ 11 12 #include <sys/types.h> 13 #include <sys/buf.h> 14 15 #include <nlist.h> 16 #include <ctype.h> 17 #include <paths.h> 18 #include <string.h> 19 #include <stdlib.h> 20 #include "systat.h" 21 #include "extern.h" 22 23 static void dkselect __P((char *, int, int [])); 24 static int read_names __P((void)); 25 26 static struct nlist namelist[] = { 27 #define X_DK_NDRIVE 0 28 { "_dk_ndrive" }, 29 #define X_DK_WPMS 1 30 { "_dk_wpms" }, 31 #ifdef vax 32 #define X_MBDINIT (X_DK_WPMS+1) 33 { "_mbdinit" }, 34 #define X_UBDINIT (X_DK_WPMS+2) 35 { "_ubdinit" }, 36 #endif 37 #ifdef sun 38 #define X_MBDINIT (X_DK_WPMS+1) 39 { "_mbdinit" }, 40 #endif 41 #ifdef tahoe 42 #define X_VBDINIT (X_DK_WPMS+1) 43 { "_vbdinit" }, 44 #endif 45 #if defined(hp300) || defined(luna68k) 46 #define X_HPDINIT (X_DK_WPMS+1) 47 { "_hp_dinit" }, 48 #endif 49 #ifdef mips 50 #define X_SCSI_DINIT (X_DK_WPMS+1) 51 { "_scsi_dinit" }, 52 #endif 53 { "" }, 54 }; 55 56 float *dk_mspw; 57 int dk_ndrive, *dk_select; 58 char **dr_name; 59 60 #include "names.c" /* XXX */ 61 62 int 63 dkinit() 64 { 65 register int i; 66 register char *cp; 67 static int once = 0; 68 static char buf[1024]; 69 70 if (once) 71 return(1); 72 73 if (kvm_nlist(kd, namelist)) { 74 nlisterr(namelist); 75 return(0); 76 } 77 if (namelist[X_DK_NDRIVE].n_value == 0) { 78 error("dk_ndrive undefined in kernel"); 79 return(0); 80 } 81 NREAD(X_DK_NDRIVE, &dk_ndrive, LONG); 82 if (dk_ndrive <= 0) { 83 error("dk_ndrive=%d according to %s", dk_ndrive, _PATH_UNIX); 84 return(0); 85 } 86 dk_mspw = (float *)calloc(dk_ndrive, sizeof (float)); 87 { 88 long *wpms = (long *)calloc(dk_ndrive, sizeof(long)); 89 KREAD(NPTR(X_DK_WPMS), wpms, dk_ndrive * sizeof (long)); 90 for (i = 0; i < dk_ndrive; i++) 91 *(dk_mspw + i) = (*(wpms + i) == 0)? 0.0: 92 (float) 1.0 / *(wpms + i); 93 free(wpms); 94 } 95 dr_name = (char **)calloc(dk_ndrive, sizeof (char *)); 96 dk_select = (int *)calloc(dk_ndrive, sizeof (int)); 97 for (cp = buf, i = 0; i < dk_ndrive; i++) { 98 dr_name[i] = cp; 99 sprintf(dr_name[i], "dk%d", i); 100 cp += strlen(dr_name[i]) + 1; 101 if (dk_mspw[i] != 0.0) 102 dk_select[i] = 1; 103 } 104 if (!read_names()) { 105 free(dr_name); 106 free(dk_select); 107 free(dk_mspw); 108 return(0); 109 } 110 once = 1; 111 return(1); 112 } 113 114 int 115 dkcmd(cmd, args) 116 char *cmd, *args; 117 { 118 if (prefix(cmd, "display") || prefix(cmd, "add")) { 119 dkselect(args, 1, dk_select); 120 return (1); 121 } 122 if (prefix(cmd, "ignore") || prefix(cmd, "delete")) { 123 dkselect(args, 0, dk_select); 124 return (1); 125 } 126 if (prefix(cmd, "drives")) { 127 register int i; 128 129 move(CMDLINE, 0); clrtoeol(); 130 for (i = 0; i < dk_ndrive; i++) 131 if (dk_mspw[i] != 0.0) 132 printw("%s ", dr_name[i]); 133 return (1); 134 } 135 return (0); 136 } 137 138 static void 139 dkselect(args, truefalse, selections) 140 char *args; 141 int truefalse, selections[]; 142 { 143 register char *cp; 144 register int i; 145 char *index(); 146 147 cp = index(args, '\n'); 148 if (cp) 149 *cp = '\0'; 150 for (;;) { 151 for (cp = args; *cp && isspace(*cp); cp++) 152 ; 153 args = cp; 154 for (; *cp && !isspace(*cp); cp++) 155 ; 156 if (*cp) 157 *cp++ = '\0'; 158 if (cp - args == 0) 159 break; 160 for (i = 0; i < dk_ndrive; i++) 161 if (strcmp(args, dr_name[i]) == 0) { 162 if (dk_mspw[i] != 0.0) 163 selections[i] = truefalse; 164 else 165 error("%s: drive not configured", 166 dr_name[i]); 167 break; 168 } 169 if (i >= dk_ndrive) 170 error("%s: unknown drive", args); 171 args = cp; 172 } 173 } 174