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Date: Fri, 13 Jul 2007 18:18:47 +0530 From: "Amit K. Arora" <aarora@...ux.vnet.ibm.com> To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org Cc: xfs@....sgi.com, tytso@....edu, cmm@...ibm.com, suparna@...ibm.com, adilger@...sterfs.com, dgc@....com Subject: [PATCH 3/6][TAKE7] revalidate write permissions for fallocate From: David P. Quigley <dpquigl@...ho.nsa.gov> Revalidate the write permissions for fallocate(2), in case security policy has changed since the files were opened. Acked-by: James Morris <jmorris@...ei.org> Signed-off-by: David P. Quigley <dpquigl@...ho.nsa.gov> --- fs/open.c | 3 +++ 1 files changed, 3 insertions(+) Index: linux-2.6.22/fs/open.c =================================================================== --- linux-2.6.22.orig/fs/open.c +++ linux-2.6.22/fs/open.c @@ -407,6 +407,9 @@ asmlinkage long sys_fallocate(int fd, in goto out; if (!(file->f_mode & FMODE_WRITE)) goto out_fput; + ret = security_file_permission(file, MAY_WRITE); + if (ret) + goto out_fput; inode = file->f_path.dentry->d_inode; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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