getpathbylabel(3TSOL)Trusted Extensions Library Functionsgetpathbylabel(3TSOL)NAMEgetpathbylabel - return the zone pathname
SYNOPSIS
cc [flags...] file... -ltsol [library...]
#include <tsol/label.h>
char *getpathbylabel(const char *path, char *resolved_path,
size_t bufsize, const m_label_t *sl);
DESCRIPTION
The getpathbylabel() function expands all symbolic links and resolves
references to '/./', '/../', extra '/' characters, and stores the zone
pathname in the buffer named by resolved_path. The bufsize argument
specifies the size in bytes of this buffer. The resulting path will
have no symbolic links components, nor any '/./', '/../'. This function
can only be called from the global zone.
The zone pathname is relative to the sensitivity label sl. To specify a
sensitivity label for a zone name which does not exist, the process
must assert either the PRIV_FILE_UPGRADE_SL or PRIV_FILE_DOWNGRADE_SL
privilege depending on whether the specified sensitivity label domi‐
nates or does not dominate the process sensitivity label.
RETURN VALUES
The getpathbylabel() function returns a pointer to the resolved_path on
success. Otherwise it returns NULL and sets errno to indicate the
error.
ERRORS
The getpathbylabel() function will fail if:
EACCES Search permission is denied for a component of the path
prefix of path.
EFAULT resolved_path extends outside the process's allocated
address space or beyond bufsize bytes.
EINVAL path or resolved_path was NULL, current zone is not the
global zone, or sl is invalid.
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 (see
sysconf(3C)) while _POSIX_NO_TRUNC is in effect (see
pathconf(2)).
ENOENT The named file does not exist.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOreadlink(2), getzonerootbyid(3TSOL), libtsol(3LIB), attributes(5),
labels(5)WARNINGS
The getpathbylabel() function indirectly invokes the readlink(2) system
call, and hence inherits the possibility of hanging due to inaccessible
file system resources.
NOTES
The functionality described on this manual page is available only if
the system is configured with Trusted Extensions.
SunOS 5.10 20 Jul 2007 getpathbylabel(3TSOL)
