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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* System includes
*/
#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <libgen.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <assert.h>
#include <locale.h>
#include <libintl.h>
/*
* local includes
*/
#include "instzones_lib.h"
#include "zones_strings.h"
#define isdot(x) ((x[0] == '.') && (!x[1] || (x[1] == '/')))
#define isdotdot(x) ((x[0] == '.') && (x[1] == '.') && \
(!x[2] || (x[2] == '/')))
/*
* *****************************************************************************
* global external (public) functions
* *****************************************************************************
*/
/*
* Name: z_make_zone_root
* Description: Given its zonepath, generate a string representing the
* mountpoint of where the root path for a nonglobal zone is
* mounted. The zone is mounted using 'zoneadm', which mounts
* the zone's filesystems wrt <zonepath>/lu/a
* Arguments: zone_path - non-NULL pointer to string representing zonepath
* Returns: char * - pointer to string representing zonepath of zone
* NULL - if zone_path is NULL.
* Notes: The string returned is in static storage and should not be
* free()ed by the caller.
*/
char *
z_make_zone_root(char *zone_path)
{
static char zone_root_buf[MAXPATHLEN];
if (zone_path == NULL)
return (NULL);
(void) snprintf(zone_root_buf, MAXPATHLEN, "%s%slu/a", zone_path,
(zone_path[0] != '\0' &&
zone_path[strlen(zone_path) - 1] == '/') ? "" : "/");
return (zone_root_buf);
}
void
z_path_canonize(char *a_file)
{
char *pt;
char *last;
int level;
/* remove references such as "./" and "../" and "//" */
for (pt = a_file; *pt; /* void */) {
if (isdot(pt)) {
(void) strcpy(pt, pt[1] ? pt+2 : pt+1);
} else if (isdotdot(pt)) {
level = 0;
last = pt;
do {
level++;
last += 2;
if (*last) {
last++;
}
} while (isdotdot(last));
--pt; /* point to previous '/' */
while (level--) {
if (pt <= a_file) {
return;
}
while ((*--pt != '/') && (pt > a_file))
;
}
if (*pt == '/') {
pt++;
}
(void) strcpy(pt, last);
} else {
while (*pt && (*pt != '/')) {
pt++;
}
if (*pt == '/') {
while (pt[1] == '/') {
(void) strcpy(pt, pt+1);
}
pt++;
}
}
}
if ((--pt > a_file) && (*pt == '/')) {
*pt = '\0';
}
}
void
z_canoninplace(char *src)
{
char *dst;
char *src_start;
/* keep a ptr to the beginning of the src string */
src_start = src;
dst = src;
while (*src) {
if (*src == '/') {
*dst++ = '/';
while (*src == '/')
src++;
} else
*dst++ = *src++;
}
/*
* remove any trailing slashes, unless the whole string is just "/".
* If the whole string is "/" (i.e. if the last '/' cahr in dst
* in the beginning of the original string), just terminate it
* and return "/".
*/
if ((*(dst - 1) == '/') && ((dst - 1) != src_start))
dst--;
*dst = '\0';
}
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