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authorChuck Lever <chuck.lever@oracle.com>2009-04-23 19:33:25 -0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-04-28 13:54:30 -0400
commite06b64050ebea1220bca3c291d0431f5206b5c95 (patch)
tree8d24948cb2397ae456bdf0467b63fa41764759fe /fs
parent261758b5c3dfeac73ca364c47ed538f5ce4250ee (diff)
NFSD: Stricter buffer size checking in fs/nfsd/nfsctl.c
Clean up: For consistency, handle output buffer size checking in a other nfsctl functions the same way it's done for write_versions(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfsd/nfsctl.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index a152694e016..877e713a0fd 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -695,8 +695,9 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
if (rv)
return rv;
}
- sprintf(buf, "%d\n", nfsd_nrthreads());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
+ nfsd_nrthreads());
}
/**
@@ -1197,7 +1198,9 @@ static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
nfsd_max_blksize = bsize;
mutex_unlock(&nfsd_mutex);
}
- return sprintf(buf, "%d\n", nfsd_max_blksize);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
+ nfsd_max_blksize);
}
#ifdef CONFIG_NFSD_V4
@@ -1221,8 +1224,9 @@ static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
return -EINVAL;
nfs4_reset_lease(lease);
}
- sprintf(buf, "%ld\n", nfs4_lease_time());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n",
+ nfs4_lease_time());
}
/**