70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/syscall.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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s filename [args...]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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char *buf = NULL, *opts = NULL;
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size_t blen, plen = 0;
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int i, fd;
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ssize_t n;
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struct stat sb;
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ARGBEGIN {
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default:
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usage();
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} ARGEND;
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if (argc < 1)
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usage();
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fd = open(argv[0], O_RDONLY);
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if (fd < 0)
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eprintf("open %s:", argv[0]);
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if (fstat(fd, &sb) < 0)
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eprintf("stat %s:", argv[0]);
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blen = sb.st_size;
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if(!(buf = malloc(blen)))
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eprintf("malloc:");
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n = read(fd, buf, blen);
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if(n < 0 || (size_t)n != blen)
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eprintf("read:");
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argc--;
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argv++;
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for (i = 0; i < argc; i++)
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plen += strlen(argv[i]);
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if (plen > 0) {
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plen += argc;
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if(!(opts = calloc(1, plen)))
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eprintf("calloc:");
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for (i = 0; i < argc; i++) {
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strcat(opts, argv[i]);
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if (i + 1 < argc)
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strcat(opts, " ");
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}
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}
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if (syscall(__NR_init_module, buf, blen, !opts ? "" : opts) < 0)
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eprintf("init_module:");
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free(opts);
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free(buf);
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return EXIT_SUCCESS;
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}
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