diff options
| -rw-r--r-- | parallel.c | 21 |
1 files changed, 18 insertions, 3 deletions
@@ -26,6 +26,7 @@ #include <sys/time.h> #include <time.h> #include <stdlib.h> +#include <errno.h> #include <sys/select.h> #include <sys/types.h> #include <sys/wait.h> @@ -86,6 +87,7 @@ int main(int argc, char **argv) { int cidx = 0; int returncode = 0; int replace_cb = 0; + char *t; while ((opt = getopt(argc, argv, "+hij:l:")) != -1) { switch (opt) { @@ -96,10 +98,22 @@ int main(int argc, char **argv) { replace_cb = 1; break; case 'j': - maxjobs = atoi(optarg); + errno = 0; + maxjobs = strtoul(optarg, &t, 0); + if (errno != 0 || (t-optarg) != strlen(optarg)) { + fprintf(stderr, "option '%s' is not a number\n", + optarg); + exit(2); + } break; case 'l': - maxload = atoi(optarg); + errno = 0; + maxload = strtoul(optarg, &t, 0); + if (errno != 0 || (t-optarg) != strlen(optarg)) { + fprintf(stderr, "option '%s' is not a number\n", + optarg); + exit(2); + } break; default: /* ’?’ */ usage(); @@ -108,7 +122,8 @@ int main(int argc, char **argv) { } if (maxjobs < 0 && maxload < 0) { - usage(); + maxjobs = 1; /* XXX: Maybe we should try to autodetect + number of CPUs? */ } while (optind < argc) { |