GETLABEL(3TSOL) Trusted Extensions Library Functions GETLABEL(3TSOL)

NAME

getlabel, fgetlabel - get file sensitivity label

SYNOPSIS

cc [flags...] file... -ltsol [library...]


#include <tsol/label.h>

int getlabel(const char *path, m_label_t *label_p);


int fgetlabel(int fd, m_label_t *label_p);

DESCRIPTION

The getlabel() function obtains the sensitivity label of the file
that is named by path. Discretionary read, write or execute
permission to the final component of path is not required, but all
directories in the path prefix of path must be searchable.


The fgetlabel() function obtains the label of an open file that is
referred to by the argument descriptor, such as would be obtained by
an open(2) call.


The label_p argument is a pointer to an opaque label structure. The
caller must allocate space for label_p by using m_label_alloc(3TSOL).

RETURN VALUES

Upon successful completion, getlabel() and fgetlabel() return 0.
Otherwise they return -1 and set errno to indicate the error.

ERRORS

The getlabel() function will fail if:

EACCES
Search permission is denied for a component of the
path prefix of path. To override this restriction,
the calling process can assert the
PRIV_FILE_DAC_SEARCH privilege.


EFAULT
label_p or path points to an invalid address.


EIO
An I/O error occurred while reading from or writing
to the file system.


ELOOP
Too many symbolic links were encountered in
translating path.


ENAMETOOLONG
The length of the path argument exceeds PATH_MAX, or
a pathname component is longer than NAME_MAX while
_POSIX_NO_TRUNC is in effect (see pathconf(2)).


ENOENT
The file referred to by path does not exist.


ENOTDIR
A component of the path prefix of path is not a
directory.


The fgetlabel() function will fail if:

EBADF
The fd argument is not a valid open file descriptor.


EFAULT
The label_p argument points to an invalid address.


EIO
An I/O error occurred while reading from or writing to the
file system.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+

SEE ALSO

open(2), pathconf(2), m_label_alloc(3TSOL), attributes(7), labels(7)


Obtaining a File Label in Solaris Trusted Extensions Developer's
Guide

NOTES

The functionality described on this manual page is available only if
the system is configured with Trusted Extensions.

December 3, 2017 GETLABEL(3TSOL)