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54 lines
1.1 KiB
54 lines
1.1 KiB
6 years ago
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#include <litc.h>
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static char buf[1024];
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void readprint(int fd)
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{
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long ret;
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if ((ret = read(fd, &buf, sizeof(buf))) < 0) {
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err(ret, "read");
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exit(-1);
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}
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printf("FD %d read %ld bytes\n", fd, ret);
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if (ret == sizeof(buf))
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ret = sizeof(buf) - 1;
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buf[ret] = '\0';
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printf("FD %d returned: %s\n", fd, buf);
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}
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int main(int argc, char **argv)
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{
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if (link("/boot/uefi/readme.txt", "/crap") != 0)
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errx(-1, "should have succeeded");
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int fd;
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if ((fd = open("/crap", O_RDONLY, 0)) < 0)
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errx(-1, "open failed");
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readprint(fd);
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if (unlink("/crap") != 0)
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errx(-1, "should have succeeded");
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if ((fd = open("/crap", O_RDONLY, 0)) >= 0)
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errx(-1, "open of unlinked should have failed");
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if ((fd = open("/boot/uefi/readme.txt", O_RDONLY, 0)) < 0)
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errx(-1, "open original failed");
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readprint(fd);
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if (unlink("/boot/uefi/readme.txt") != 0)
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errx(-1, "should have succeeded");
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if (unlink("/another") >= 0)
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errx(-1, "should have failed");
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if (unlink("/another/you-found-me") != 0)
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errx(-1, "should have succeeded");
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if (unlink("/another") != 0)
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errx(-1, "should have succeeded");
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printf("success\n");
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return 0;
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}
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