move functions
This commit is contained in:
albert
parent
f40af35b77
commit
3f6928c4fb
416
sysctl.c
416
sysctl.c
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@ -36,16 +36,6 @@ static bool true = 1;
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static bool false = 0;
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/*
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* Function Prototypes
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*/
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static int Usage(const char *name);
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static void Preload(const char *filename);
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static int WriteSetting(const char *setting);
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static int ReadSetting(const char *setting);
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static int DisplayAll(const char *path, bool ShowTableUtil);
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/*
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* Globals...
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*/
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@ -80,74 +70,6 @@ static void slashdot(char *p, char old, char new){
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}
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}
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/*
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* Main...
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*
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*/
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int main(int argc, char **argv) {
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const char *me = (const char *)basename(argv[0]);
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bool SwitchesAllowed = true;
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bool WriteMode = false;
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int ReturnCode = 0;
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const char *preloadfile = DEFAULT_PRELOAD;
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PrintName = true;
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PrintNewline = true;
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if (argc < 2) {
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return Usage(me);
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} /* endif */
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argv++;
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for (; argv && *argv && **argv; argv++) {
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if (SwitchesAllowed && **argv == '-') { /* we have a switch */
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switch((*argv)[1]) {
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case 'b':
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/* This is "binary" format, which means more for BSD. */
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PrintNewline = false;
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/* FALL THROUGH */
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case 'n':
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PrintName = false;
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break;
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case 'w':
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SwitchesAllowed = false;
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WriteMode = true;
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break;
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case 'p':
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argv++;
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if (argv && *argv && **argv) {
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preloadfile = *argv;
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} /* endif */
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Preload(preloadfile);
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return(0);
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break;
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case 'a': /* string and integer values (for Linux, all of them) */
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case 'A': /* the above, including "opaques" (would be unprintable) */
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case 'X': /* the above, with opaques completly printed in hex */
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SwitchesAllowed = false;
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return DisplayAll(PROC_PATH, ((*argv)[1] == 'a') ? false : true);
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case 'h':
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case '?':
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return Usage(me);
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default:
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fprintf(stderr, ERR_UNKNOWN_PARAMETER, *argv);
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return Usage(me);
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} /* end switch */
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} else {
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SwitchesAllowed = false;
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if (WriteMode)
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ReturnCode = WriteSetting(*argv);
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else ReadSetting(*argv);
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} /* end if */
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} /* end for */
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return ReturnCode;
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} /* end main */
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/*
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@ -190,141 +112,6 @@ static char *StripLeadingAndTrailingSpaces(char *oneline) {
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/*
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* Preload the sysctl's from the conf file
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* - we parse the file and then reform it (strip out whitespace)
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*
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*/
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static void Preload(const char *filename) {
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FILE *fp;
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char oneline[257];
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char buffer[257];
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char *t;
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int n = 0;
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char *name, *value;
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if (!filename || ((fp = fopen(filename, "r")) == NULL)) {
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fprintf(stderr, ERR_PRELOAD_FILE, filename);
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return;
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} /* endif */
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while (fgets(oneline, 256, fp)) {
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oneline[256] = 0;
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n++;
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t = StripLeadingAndTrailingSpaces(oneline);
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if (strlen(t) < 2)
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continue;
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if (*t == '#' || *t == ';')
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continue;
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name = strtok(t, "=");
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if (!name || !*name) {
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fprintf(stderr, WARN_BAD_LINE, filename, n);
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continue;
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} /* endif */
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StripLeadingAndTrailingSpaces(name);
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value = strtok(NULL, "\n\r");
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if (!value || !*value) {
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fprintf(stderr, WARN_BAD_LINE, filename, n);
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continue;
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} /* endif */
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while ((*value == ' ' || *value == '\t') && *value != 0)
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value++;
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sprintf(buffer, "%s=%s", name, value);
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WriteSetting(buffer);
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} /* endwhile */
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fclose(fp);
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} /* end Preload() */
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/*
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* Write a sysctl setting
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*
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*/
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static int WriteSetting(const char *setting) {
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int rc = 0;
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const char *name = setting;
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const char *value;
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const char *equals;
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char *tmpname;
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FILE *fp;
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char *outname;
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if (!name) { /* probably don't want to display this err */
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return 0;
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} /* end if */
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equals = index(setting, '=');
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if (!equals) {
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fprintf(stderr, ERR_NO_EQUALS, setting);
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return -1;
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} /* end if */
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value = equals + 1; /* point to the value in name=value */
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if (!*name || !*value || name == equals) {
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fprintf(stderr, ERR_MALFORMED_SETTING, setting);
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return -2;
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} /* end if */
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/* used to open the file */
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tmpname = malloc(equals-name+1+strlen(PROC_PATH));
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strcpy(tmpname, PROC_PATH);
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strncat(tmpname, name, (int)(equals-name));
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tmpname[equals-name+strlen(PROC_PATH)] = 0;
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slashdot(tmpname+strlen(PROC_PATH),'.','/'); /* change . to / */
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/* used to display the output */
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outname = malloc(equals-name+1);
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strncpy(outname, name, (int)(equals-name));
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outname[equals-name] = 0;
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slashdot(outname,'/','.'); /* change / to . */
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fp = fopen(tmpname, "w");
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if (!fp) {
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switch(errno) {
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case ENOENT:
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fprintf(stderr, ERR_INVALID_KEY, outname);
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break;
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case EACCES:
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fprintf(stderr, ERR_PERMISSION_DENIED, outname);
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break;
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default:
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fprintf(stderr, ERR_UNKNOWN_WRITING, errno, outname);
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break;
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} /* end switch */
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rc = -1;
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} else {
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fprintf(fp, "%s\n", value);
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fclose(fp);
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if (PrintName) {
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fprintf(stdout, "%s = %s\n", outname, value);
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} else {
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if (PrintNewline)
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fprintf(stdout, "%s\n", value);
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else
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fprintf(stdout, "%s", value);
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}
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} /* endif */
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free(tmpname);
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free(outname);
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return rc;
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} /* end WriteSetting() */
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/*
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* Read a sysctl setting
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*
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@ -429,3 +216,206 @@ static int DisplayAll(const char *path, bool ShowTableUtil) {
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return rc;
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} /* end DisplayAll() */
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/*
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* Write a sysctl setting
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*
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*/
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static int WriteSetting(const char *setting) {
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int rc = 0;
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const char *name = setting;
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const char *value;
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const char *equals;
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char *tmpname;
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FILE *fp;
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char *outname;
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if (!name) { /* probably don't want to display this err */
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return 0;
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} /* end if */
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equals = index(setting, '=');
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if (!equals) {
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fprintf(stderr, ERR_NO_EQUALS, setting);
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return -1;
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} /* end if */
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value = equals + 1; /* point to the value in name=value */
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if (!*name || !*value || name == equals) {
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fprintf(stderr, ERR_MALFORMED_SETTING, setting);
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return -2;
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} /* end if */
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/* used to open the file */
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tmpname = malloc(equals-name+1+strlen(PROC_PATH));
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strcpy(tmpname, PROC_PATH);
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strncat(tmpname, name, (int)(equals-name));
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tmpname[equals-name+strlen(PROC_PATH)] = 0;
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slashdot(tmpname+strlen(PROC_PATH),'.','/'); /* change . to / */
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/* used to display the output */
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outname = malloc(equals-name+1);
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strncpy(outname, name, (int)(equals-name));
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outname[equals-name] = 0;
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slashdot(outname,'/','.'); /* change / to . */
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fp = fopen(tmpname, "w");
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if (!fp) {
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switch(errno) {
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case ENOENT:
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fprintf(stderr, ERR_INVALID_KEY, outname);
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break;
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case EACCES:
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fprintf(stderr, ERR_PERMISSION_DENIED, outname);
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break;
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default:
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fprintf(stderr, ERR_UNKNOWN_WRITING, errno, outname);
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break;
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} /* end switch */
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rc = -1;
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} else {
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fprintf(fp, "%s\n", value);
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fclose(fp);
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if (PrintName) {
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fprintf(stdout, "%s = %s\n", outname, value);
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} else {
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if (PrintNewline)
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fprintf(stdout, "%s\n", value);
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else
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fprintf(stdout, "%s", value);
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}
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} /* endif */
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free(tmpname);
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free(outname);
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return rc;
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} /* end WriteSetting() */
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/*
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* Preload the sysctl's from the conf file
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* - we parse the file and then reform it (strip out whitespace)
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*
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*/
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static void Preload(const char *filename) {
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FILE *fp;
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char oneline[257];
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char buffer[257];
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char *t;
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int n = 0;
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char *name, *value;
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if (!filename || ((fp = fopen(filename, "r")) == NULL)) {
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fprintf(stderr, ERR_PRELOAD_FILE, filename);
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return;
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} /* endif */
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while (fgets(oneline, 256, fp)) {
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oneline[256] = 0;
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n++;
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t = StripLeadingAndTrailingSpaces(oneline);
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if (strlen(t) < 2)
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continue;
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if (*t == '#' || *t == ';')
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continue;
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name = strtok(t, "=");
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if (!name || !*name) {
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fprintf(stderr, WARN_BAD_LINE, filename, n);
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continue;
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} /* endif */
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StripLeadingAndTrailingSpaces(name);
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value = strtok(NULL, "\n\r");
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if (!value || !*value) {
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fprintf(stderr, WARN_BAD_LINE, filename, n);
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continue;
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} /* endif */
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while ((*value == ' ' || *value == '\t') && *value != 0)
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value++;
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sprintf(buffer, "%s=%s", name, value);
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WriteSetting(buffer);
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} /* endwhile */
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fclose(fp);
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} /* end Preload() */
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/*
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* Main...
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*
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*/
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int main(int argc, char **argv) {
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const char *me = (const char *)basename(argv[0]);
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bool SwitchesAllowed = true;
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bool WriteMode = false;
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int ReturnCode = 0;
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const char *preloadfile = DEFAULT_PRELOAD;
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PrintName = true;
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PrintNewline = true;
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if (argc < 2) {
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return Usage(me);
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} /* endif */
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argv++;
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for (; argv && *argv && **argv; argv++) {
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if (SwitchesAllowed && **argv == '-') { /* we have a switch */
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switch((*argv)[1]) {
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case 'b':
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/* This is "binary" format, which means more for BSD. */
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PrintNewline = false;
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/* FALL THROUGH */
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case 'n':
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PrintName = false;
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break;
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case 'w':
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SwitchesAllowed = false;
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WriteMode = true;
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break;
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case 'p':
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argv++;
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if (argv && *argv && **argv) {
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preloadfile = *argv;
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} /* endif */
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Preload(preloadfile);
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return(0);
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break;
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case 'a': /* string and integer values (for Linux, all of them) */
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case 'A': /* the above, including "opaques" (would be unprintable) */
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case 'X': /* the above, with opaques completly printed in hex */
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SwitchesAllowed = false;
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return DisplayAll(PROC_PATH, ((*argv)[1] == 'a') ? false : true);
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case 'h':
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case '?':
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return Usage(me);
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default:
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fprintf(stderr, ERR_UNKNOWN_PARAMETER, *argv);
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return Usage(me);
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} /* end switch */
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} else {
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SwitchesAllowed = false;
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if (WriteMode)
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ReturnCode = WriteSetting(*argv);
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else ReadSetting(*argv);
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} /* end if */
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} /* end for */
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return ReturnCode;
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} /* end main */
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