53 lines
952 B
C
53 lines
952 B
C
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#include "internal.h"
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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const char mknod_usage[] = "mknod file b|c|u|p major minor\n"
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"\tMake special files.\n"
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"\n"
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"\tb:\tMake a block (buffered) device.\n"
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"\tc or u:\tMake a character (un-buffered) device.\n"
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"\tp:\tMake a named pipe. Major and minor are ignored for named pipes.\n";
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int
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mknod_main(struct FileInfo * i, int argc, char * * argv)
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{
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mode_t mode = 0;
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dev_t dev = 0;
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switch(argv[2][0]) {
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case 'c':
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case 'u':
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mode = S_IFCHR;
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break;
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case 'b':
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mode = S_IFBLK;
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break;
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case 'p':
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mode = S_IFIFO;
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break;
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default:
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usage(mknod_usage);
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return 1;
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}
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if ( mode == S_IFCHR || mode == S_IFBLK ) {
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dev = (atoi(argv[3]) << 8) | atoi(argv[4]);
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if ( argc != 5 ) {
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usage(mknod_usage);
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return 1;
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}
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}
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mode |= 0666;
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if ( mknod(argv[1], mode, dev) != 0 ) {
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name_and_error(argv[1]);
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return 1;
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}
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return 0;
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}
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