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author | Russ Cox <[email protected]> | 2011-01-02 17:59:57 -0500 |
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committer | Russ Cox <[email protected]> | 2011-01-02 17:59:57 -0500 |
commit | e92fd6142de05627096a1e831140e5bd355e45be (patch) | |
tree | 201d63b061898deaed0736488ac7334246da6c8e /mkfs.c | |
parent | 2ea6c764c34d3025b5f3121a0919fda7d1eb9b01 (diff) | |
download | xv6-labs-e92fd6142de05627096a1e831140e5bd355e45be.tar.gz xv6-labs-e92fd6142de05627096a1e831140e5bd355e45be.tar.bz2 xv6-labs-e92fd6142de05627096a1e831140e5bd355e45be.zip |
mkfs: avoid out of bounds access to sb in wsect
Diffstat (limited to 'mkfs.c')
-rw-r--r-- | mkfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -90,7 +90,9 @@ main(int argc, char *argv[]) for(i = 0; i < nblocks + usedblocks; i++) wsect(i, zeroes); - wsect(1, &sb); + memset(buf, 0, sizeof(buf)); + memmove(buf, &sb, sizeof(sb)); + wsect(1, buf); rootino = ialloc(T_DIR); assert(rootino == ROOTINO); |