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smc_util.c
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smc_util.c
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//
// smc_util.c
// smc_utils
//
// Created by Mark Garrett on 25/11/2011.
// Copyright (c) 2011 Garetech Computer Solutions. All rights reserved.
//
#include "smc_utils.h"
#include "reportfd.h"
#include <stdio.h>
#include <stdarg.h>
#include <errno.h>
#include <stdlib.h>
static void dousage(char *progid);
static void dousage(char *progid)
{
// pDcqtsxnvdfw:lh?
// pDf
fprintf(stderr, "%s [-c] [-q] [-d] [-D] [-p] [-f] [-v] [-t] [-s] [-x] [-n] [-r <key> ] [ -w <key> ] [-l] [ <value>|keys... ]\n", progid);
fprintf(stderr, " -c suppress newline\n");
fprintf(stderr, " -q be quiet as a mouse\n");
fprintf(stderr, " -d increase debug output\n");
fprintf(stderr, " -D Display known descriptions\n");
fprintf(stderr, " -p Private/Paranoide, blank out the System Serial#\n");
fprintf(stderr, " -f display FAN specific data\n");
fprintf(stderr, " -v display values\n");
fprintf(stderr, " -t display [type](s)\n");
fprintf(stderr, " -s display :size\n");
fprintf(stderr, " -x dump values in (hexbytes)\n");
fprintf(stderr, " -n when normally a single line output line breaks between variables\n");
fprintf(stderr, " -w <key> write value to key\n");
fprintf(stderr, " -l list all keys to stdout\n");
fprintf(stderr, " with out options -w or -l the default is to read args[] as a series of keys to display\n");
exit(EINVAL);
}
gbl_params_t PARAMS;
int main(int argc, char *argv[])
{
char c;
int usage;
char *value;
char *key;
int idx;
direction_t direction;
kern_return_t r0;
gbl_params_t *params = &PARAMS;
usage = 0;
optarg = NULL;
bzero(params,sizeof(gbl_params_t));
params->progid = strdup(argv[0]);
params->dbg = 0;
params->fldidx = 1;
key = NULL;
value = NULL;
direction = RD;
params->outfd = stdout;
params->flg = F_ALWAYS;
params->newline = "\n";
params->model = get_sysmodel_dynamic();
params->flg |= F_NOISY; // by default noisy output
while (!usage && ((c=getopt(argc,argv, "pDcqtsxXOnvdfw:lh?")) != -1 )) {
switch(c) {
case 'p':
params->flg |= F_PRIVATE;
break;
case 'D':
params->flg |= F_DESCRIBE;
break;
case 'c':
params->newline = "";
break;
case 'q':
params->flg &= ~F_NOISY; // clear noisy
break;
case 't':
params->flg |= F_SHOWTYPE;
break;
case 's':
params->flg |= F_SHOWSIZE;
break;
case 'x':
params->flg |= F_DUMPHEX;
break;
case 'X':
params->flg |= F_DUMPHEX;
params->flg |= F_BINARY;
break;
case 'n':
params->flg |= F_NL;
break;
case 'O':
params->flg |= F_BYTEORDER; // flip byteorder
break;
case 'v':
params->flg |= F_VALUES;
break;
case 'd':
params->flg |= F_DEBUG;
params->dbg++;
break;
case 'f':
direction = FAN;
break;
case 'w':
key = strdup(optarg);
if (key == NULL ) {
if (flag_test(F_NOISY))
fprintf(stderr, "# Out of memory on args, impossible i say ;)\n");
exit(ENOMEM);
}
direction=WR;
break;
case 'l':
key = NULL; // a null value will list all
direction=LST;
break;
default:
usage++;
break;
}
}
argc -= (optind);
argv += (optind);
if (usage) {
dousage(params->progid);
exit(EINVAL);
}
if (flag_test(F_DEBUG)) {
fprintf(params->outfd, "# System Model: %s %s", params->model, params->newline);
}
r0 = smc_open(¶ms->conn);
if (r0 != kIOReturnSuccess) {
if (flag_test(F_NOISY))
fprintf(stderr, "# Error opening SMC subsystem: %d\n", r0);
} else {
switch (direction) {
case WR:
if (argc == 1) {
value = strdup(argv[0]);
if (value == NULL ) {
if (flag_test(F_NOISY))
fprintf(stderr, "# Out of memory on args, impossible i say ;)\n");
exit(ENOMEM);
}
r0 = smc_key_write(params->conn, key, value);
} else {
dousage(params->progid);
r0 = EINVAL;
}
break;
case FAN:
report_fans(params->conn);
break;
case TEMP:
break;
case LST:
r0 = smc_display_allkeys(params->conn, params->model);
break;
case RD:
for (idx=0;idx<argc;idx++) {
r0 = smc_key_display(params->conn, argv[idx]);
if (r0 != kIOReturnSuccess) {
if (flag_test(F_NOISY))
fprintf(stderr, "# Error displaying key: %s: %d\n", argv[idx], r0);
}
}
break;
case RW: // just to complete the values of direction, no function here
case UD:
if (flag_test(F_NOISY))
fprintf(stderr, "# internal error undefined direction\n");
exit(EINVAL);
break;
}
// TODO: r0 may hold a failure from an operation ?
r0 = smc_close(¶ms->conn);
if (r0 != kIOReturnSuccess) {
if (flag_test(F_NOISY))
fprintf(stderr, "# Error closing SMC subsystem: %d\n", r0);
}
}
exit(r0);
}