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To check the file permissions using python scripting

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Old 04-29-2013
To check the file permissions using python scripting
Hi,

For a particular set of files, am trying to check if they are writable. i.e., checking whether they are having permissions greater than 755.
Am able to check this using the statement:
"if (os.path.isfile(FILE_PATH) and (os.stat(FILE_PATH).st_mode & 0777) == 0777):"

But the problem here is am exactly not sure, which all are the write permissions on a file.

or, is there any other way to check if file is having permissions greater than 755,

Any help in this regard is useful.
Thanks,
Arjun
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LEARN ABOUT FREEBSD

vop_access

VOP_ACCESS(9)						   BSD Kernel Developer's Manual					     VOP_ACCESS(9)

NAME

     VOP_ACCESS, VOP_ACCESSX -- check access permissions of a file or Unix domain socket

SYNOPSIS

     #include <sys/param.h>
     #include <sys/vnode.h>

     int
     VOP_ACCESS(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);

     int
     VOP_ACCESSX(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);

DESCRIPTION

     This entry point checks the access permissions of the file against the given credentials.

     Its arguments are:

     vp       The vnode of the file to check.

     accmode  The type of access required.

     cred     The user credentials to check.

     td       The thread which is checking.

     The accmode is a mask which can contain flags described in <sys/vnode.h>, e.g.  VREAD, VWRITE or VEXEC.  For VOP_ACCESS(), the only flags
     that may be set in accmode are VEXEC, VWRITE, VREAD, VADMIN and VAPPEND.  To check for other flags, one has to use VOP_ACCESSX() instead.

LOCKS

     The vnode will be locked on entry and should remain locked on return.

RETURN VALUES

     If the file is accessible in the specified way, then zero is returned, otherwise an appropriate error code is returned.

ERRORS

     [EPERM]		An attempt was made to change an immutable file.

     [EACCES]		The permission bits the file mode or the ACL do not permit the requested access.

SEE ALSO

     vaccess(9), vaccess_acl_nfs4(9), vaccess_acl_posix1e(9), vnode(9)

AUTHORS

     This manual page was written by Doug Rabson.

BSD
								September 18, 2009							       BSD