Send help text to stdout rather than stderr.
This helps with piping to a pager for example.
This commit is contained in:
parent
16c4849bb6
commit
0047d254e7
26
mdadm.c
26
mdadm.c
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@ -106,6 +106,7 @@ int main(int argc, char *argv[])
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int copies;
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int print_help = 0;
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FILE *outf;
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int mdfd = -1;
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@ -226,7 +227,7 @@ int main(int argc, char *argv[])
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if (opt == 'c' &&
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( strncmp(optarg, "--h", 3)==0 ||
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strncmp(optarg, "-h", 2)==0)) {
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fputs(Help_config, stderr);
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fputs(Help_config, stdout);
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exit(0);
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}
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@ -604,17 +605,24 @@ int main(int argc, char *argv[])
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continue;
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}
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if (strcmp(update,"?") == 0 || strcmp(update, "help") == 0)
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fprintf(stderr, Name ": ");
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else
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fprintf(stderr, Name ": '--update=%s' is invalid. ", update);
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fprintf(stderr, "Valid --update options are:\n"
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if (strcmp(update,"?") == 0 ||
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strcmp(update, "help") == 0) {
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outf = stdout;
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fprintf(outf, Name ": ");
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} else {
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outf = stderr;
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fprintf(outf,
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Name ": '--update=%s' is invalid. ",
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update);
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}
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fprintf(outf, "Valid --update options are:\n"
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" 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
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" 'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
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exit(2);
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exit(outf == stdout ? 0 : 2);
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case O(ASSEMBLE,NoDegraded): /* --no-degraded */
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runstop = -1; /* --stop isn't allowed for --assemble, so we overload slightly */
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runstop = -1; /* --stop isn't allowed for --assemble,
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* so we overload slightly */
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continue;
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case O(ASSEMBLE,'c'): /* config file */
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@ -873,7 +881,7 @@ int main(int argc, char *argv[])
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case GROW : help_text = Help_grow; break;
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case INCREMENTAL:help_text= Help_incr; break;
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}
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fputs(help_text,stderr);
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fputs(help_text,stdout);
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exit(0);
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}
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