diff options
| author | Michael I. Bushnell <mib@gnu.org> | 1994-11-11 18:11:32 +0000 |
|---|---|---|
| committer | Michael I. Bushnell <mib@gnu.org> | 1994-11-11 18:11:32 +0000 |
| commit | 3d04d468fce628bd5a9794269e0f2201431120aa (patch) | |
| tree | e69525da3b53005630c5f7ac723600db149fd8a7 /libdiskfs/io-read.c | |
| parent | 34e5ef4d29936a9f9884b51238a1bb1dd579c062 (diff) | |
(diskfs_S_io_read): If OFF is past the end of the file, don't set
MAXREAD to a negative number; that will crash rdwr_internal.
Diffstat (limited to 'libdiskfs/io-read.c')
| -rw-r--r-- | libdiskfs/io-read.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libdiskfs/io-read.c b/libdiskfs/io-read.c index 59c2b793..b1cca454 100644 --- a/libdiskfs/io-read.c +++ b/libdiskfs/io-read.c @@ -48,9 +48,13 @@ diskfs_S_io_read (struct protid *cred, if (off == -1) off = cred->po->filepointer; - + if (off + maxread > np->dn_stat.st_size) - maxread = np->dn_stat.st_size - off; + { + maxread = np->dn_stat.st_size - off; + if (maxread < 0) + maxread = 0; + } if (maxread > *datalen) { |