diff options
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/makedevs.c | 19 | ||||
| -rw-r--r-- | miscutils/mt.c | 15 |
2 files changed, 25 insertions, 9 deletions
diff --git a/miscutils/makedevs.c b/miscutils/makedevs.c index 5948bac..c8206e0 100644 --- a/miscutils/makedevs.c +++ b/miscutils/makedevs.c @@ -17,10 +17,18 @@ #include <sys/stat.h> static const char makedevs_usage[] = - "makedevs 0.01 -- Create an entire range of device files\n\n" - "\tmakedevs /dev/ttyS c 4 64 0 63 (ttyS0-ttyS63)\n" - - "\tmakedevs /dev/hda b 3 0 0 8 s (hda,hda1-hda8)\n"; + "makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]\n\n" + "Creates a range of block or character special files\n\n" + "TYPEs include:\n" + "\tb:\tMake a block (buffered) device.\n" + "\tc or u:\tMake a character (un-buffered) device.\n" + "\tp:\tMake a named pipe. MAJOR and MINOR are ignored for named pipes.\n\n" + "FIRST specifies the number appended to NAME to create the first device.\n" + "LAST specifies the number of the last item that should be created.\n" + "If 's' is the last argument, the base device is created as well.\n\n" + "For example:\n" + "\tmakedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63\n" + "\tmakedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8\n"; int makedevs_main(int argc, char **argv) { @@ -38,6 +46,9 @@ int makedevs_main(int argc, char **argv) char devname[255]; char buf[255]; + if (argc < 7 || *argv[1]=='-') + usage(makedevs_usage); + switch (type[0]) { case 'c': mode = S_IFCHR; diff --git a/miscutils/mt.c b/miscutils/mt.c index 9791b64..cf20d17 100644 --- a/miscutils/mt.c +++ b/miscutils/mt.c @@ -4,7 +4,8 @@ #include <sys/mtio.h> #include <sys/fcntl.h> -static const char mt_usage[] = "mt [-f device] opcode value\n"; +static const char mt_usage[] = "mt [-f device] opcode value\n\n" + "Control magnetic tape drive operation\n"; struct mt_opcodes { char *name; @@ -56,6 +57,10 @@ extern int mt_main(int argc, char **argv) const struct mt_opcodes *code = opcodes; struct mtop op; int fd; + + if ((argc != 2 && argc != 3) || **(argv + 1) == '-') { + usage(mt_usage); + } if (strcmp(argv[1], "-f") == 0) { if (argc < 4) { @@ -74,7 +79,7 @@ extern int mt_main(int argc, char **argv) if (code->name == 0) { fprintf(stderr, "mt: unrecognized opcode %s.\n", argv[1]); - return (FALSE); + exit (FALSE); } op.mt_op = code->value; @@ -85,13 +90,13 @@ extern int mt_main(int argc, char **argv) if ((fd = open(file, O_RDONLY, 0)) < 0) { perror(file); - return (FALSE); + exit (FALSE); } if (ioctl(fd, MTIOCTOP, &op) != 0) { perror(file); - return (FALSE); + exit (FALSE); } - return (TRUE); + exit (TRUE); } |