30 lines
567 B
C
30 lines
567 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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int main(const int argc, char **argv) {
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if (argc < 3 || !strcmp(argv[argc - 1], "--help")) {
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printf("chroot [dir] [command] [arg arg2...]\n");
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return 0;
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}
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if (chroot(argv[1]) < 0) {
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fprintf(stderr, "chroot: %s\n", strerror(errno));
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return 1;
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}
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if (chdir("/") < 0) {
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fprintf(stderr, "chroot: %s\n", strerror(errno));
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return 1;
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}
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if (execvp(argv[2], argv + 2) < 0) {
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fprintf(stderr, "chroot: %s\n", strerror(errno));
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return 1;
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}
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return 0;
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}
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