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fuzzing: use ftruncate() instead of seeking to end of the file

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This commit is contained in:
Milan Broz
2022-10-09 12:28:16 +02:00
parent f03180d06a
commit 98f5e0538a
3 changed files with 5 additions and 15 deletions
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4
tests/fuzz/crypt2_load_fuzz.cc
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@@ -107,9 +107,7 @@ int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
err(EXIT_FAILURE, "mkostemp() failed");
/* enlarge header */
if (lseek(fd, FILESIZE-1, SEEK_SET) == -1 ||
write(fd, "\0", 1) < 1 ||
lseek(fd, 0, SEEK_SET) == -1)
if (ftruncate(fd, FILESIZE) == -1)
goto out;
if (write_buffer(fd, data, size) != (ssize_t)size)