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| author | Austin Clements <amdragon@mit.edu> | 2015-03-24 20:54:39 -0400 |
|---|---|---|
| committer | Austin Clements <amdragon@mit.edu> | 2015-03-24 20:54:39 -0400 |
| commit | 7443b9649a6d83443439ae95458434038313b42b (patch) | |
| tree | d3e9af53dd008ef83c79511a9b65ce5383b00dca /asm.h | |
| parent | 3d2dedd42714fc4eb7844b17b62669e287f27583 (diff) | |
| download | xv6-labs-7443b9649a6d83443439ae95458434038313b42b.tar.gz xv6-labs-7443b9649a6d83443439ae95458434038313b42b.tar.bz2 xv6-labs-7443b9649a6d83443439ae95458434038313b42b.zip | |
Fix missing NUL-terminator in grep
Currently, grep read()s into a buffer and then uses the buffer as a
string. Since there's no NUL-terminator, this can cause it to falsely
identify line breaks and matches from leftover data on earlier lines
and, if a line fills up the entire buffer, to read past the end of the
buffer.
Fix this by NUL-terminating any data returned by read().
Thanks to Keiichi Watanabe for the report.
Diffstat (limited to 'asm.h')
0 files changed, 0 insertions, 0 deletions