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(5) for descriptions of the following attributes:


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

SEE ALSO


open(2), pathconf(2), m_label_alloc(3TSOL), attributes(5), labels(5)


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)