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mknod: Use a switch statement for the node type

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This commit is contained in:
Michael Forney 2020-03-01 16:13:46 -08:00
parent e5d8efb32f
commit ba2f04f391
1 changed files with 15 additions and 4 deletions
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19
mknod.c
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@ -22,7 +22,7 @@ usage(void)
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
mode_t type, mode = 0666; mode_t mode = 0666;
dev_t dev; dev_t dev;
ARGBEGIN { ARGBEGIN {
@ -36,13 +36,24 @@ main(int argc, char *argv[])
if (argc != 4) if (argc != 4)
usage(); usage();
if (strlen(argv[1]) != 1 || !strchr("ucb", argv[1][0])) if (strlen(argv[1]) != 1)
goto invalid;
switch (argv[1][0]) {
case 'b':
mode |= S_IFBLK;
break;
case 'u':
case 'c':
mode |= S_IFCHR;
break;
default:
invalid:
eprintf("invalid type '%s'\n", argv[1]); eprintf("invalid type '%s'\n", argv[1]);
type = (argv[1][0] == 'b') ? S_IFBLK : S_IFCHR; }
dev = makedev(estrtonum(argv[2], 0, LLONG_MAX), estrtonum(argv[3], 0, LLONG_MAX)); dev = makedev(estrtonum(argv[2], 0, LLONG_MAX), estrtonum(argv[3], 0, LLONG_MAX));
if (mknod(argv[0], type|mode, dev) == -1) if (mknod(argv[0], mode, dev) == -1)
eprintf("mknod %s:", argv[0]); eprintf("mknod %s:", argv[0]);
return 0; return 0;
} }