OpenSolaris_b135/lib/lvm/libsvm/common/update_mdconf.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <devid.h>
#include <errno.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <meta.h>
#include <libsvm.h>
#include <svm.h>
/*
* magic strings in system
*/
#define BEGMDDBSTR "* Begin MDD database info (do not edit)\n"
#define ENDMDDBSTR "* End MDD database info (do not edit)\n"
#define NEW_BEGMDDBSTR "# Begin MDD database info (do not edit)\n"
#define NEW_ENDMDDBSTR "# End MDD database info (do not edit)\n"
#define MDDBBOOTLIST "mddb_bootlist"
#define SYS_COMMENTCHAR '*'
#define CONF_COMMENTCHAR '#'
typedef struct {
char *prop_name;
int prop_val;
} md_prop_t;
typedef enum {
MDDB_SYS_FILE,
MDDB_MDCONF_FILE
} ftype_t;
static md_prop_t upgrade_props[] = {
{ PROP_KEEP_REPL_STATE, 0 },
{ PROP_DEVID_DESTROY, 0},
{ NULL, 0}
};
/*
* The following functions manage upgrade properties
*/
void
set_upgrade_prop(char *prop_name, int val)
{
md_prop_t *upp;
upp = &upgrade_props[0];
for (; upp->prop_name != NULL; upp++) {
if (strcmp(upp->prop_name, prop_name) == 0) {
upp->prop_val = val;
return;
}
}
}
int
is_upgrade_prop(char *prop_name)
{
md_prop_t *upp;
upp = &upgrade_props[0];
for (; upp->prop_name != NULL; upp++) {
if (strcmp(upp->prop_name, prop_name) == 0) {
return (upp->prop_val == 1);
}
}
return (0);
}
int
create_in_file_prop(char *prop_name, char *fname)
{
FILE *fp;
md_prop_t *upp;
int rval = RET_ERROR;
if ((fp = fopen(fname, "a")) == NULL) {
return (errno);
}
upp = &upgrade_props[0];
for (; upp->prop_name != NULL; upp++) {
if (strcmp(upp->prop_name, prop_name) == 0) {
(void) fprintf(fp, "%s = 1;\n", upp->prop_name);
rval = RET_SUCCESS;
break;
}
}
(void) fclose(fp);
return (rval);
}
static int
is_devid_added(char *str)
{
int cnt = 0;
char *cp;
/* there are exactly 3 colons in the string for devid */
for (cnt = 0; cnt < 4; cnt++) {
if ((cp = strchr(str, ':')) == NULL)
break;
str = ++cp;
}
return (cnt == 3);
}
/*
* FUNCTION: parse_bootlist
* Parse the bootlist and add the extra field to mddb_boolist entry to
* conform to devid changes.
*
* Old format: <drivername>:<minor_number>:<offset>
* New format: <drivername>:<minor_number>:<offset>:<devid>
* Devid of id0 implies no device id.
*
* INPUT: *line - contains the mddb_bootlist
* *tfp - File pointer to the md.conf.tmp file.
*
* RETURN:
* 0 - Success
* > 0 - Failure. Errno returned
*/
static int
parse_bootlist(char *line, FILE *tfp)
{
char output[1024];
char *cp;
int retval = RET_SUCCESS;
(void) memset(output, 0, sizeof (output));
if (line[0] == SYS_COMMENTCHAR) {
output[0] = CONF_COMMENTCHAR;
}
/* move the line start of mddbbootlist */
cp = strstr(line, MDDBBOOTLIST);
if (cp != NULL)
line = cp;
/* grab the "mddb_boolist" word */
cp = strtok(line, "= ");
(void) strcat(output, cp);
(void) strcat(output, "=\042"); /* add back the EQUAL and QUOTE chars */
/*
* The line passed in is for example,
* mddb_bootlist1="sd:7:16:id1,sd@SIBM_DDRS34560SUN4.2G2N9688_____/h";
* At this point mddb_bootlist and "=" have been parsed out.
* The remaining string consists of driver name, colon separator and
* the device id(if it exists) within quotes.
* The deviceid string can contain upper and lower letters, digits
* and +-.=_~. Quotes, spaces and \n and \t are not
* allowed. They are converted to either _ or their ascii value.
* So using space,\n,;and quotes as a separator is safe.
*/
while ((cp = strtok(NULL, " \n\042;")) != NULL) {
(void) strcat(output, cp);
if (!is_devid_added(cp)) {
/* append :id0 for devid */
(void) strcat(strcat(output, ":"),
devid_str_encode(NULL, NULL));
/* no devid => SDS->SLVM migration. Set the flag */
set_upgrade_prop(PROP_DEVID_DESTROY, 1);
}
(void) strcat(output, " "); /* leave space between entries */
}
/* remove the extra space at the end */
output[strlen(output) - 1] = 0;
(void) strcat(output, "\042;\n");
if (fprintf(tfp, "%s", output) < 0) {
retval = errno;
}
return (retval);
}
/*
* FUNCTION: snarf_n_modify_bootlist
* This function stuffs the mddb_bootlist from either etc/system
* or kernel/drv/md.conf of the target system into a temporary file tname.
* The boolist in the temporary file is in device ID format.
*
* INPUT: *fp - file pointer that contains the mddb_bootlist.
* *tname - file into which the modified bootlist will be written to.
* * buf - buffer handed by upper level routine for reading in contents.
* * bufsiz - size of the buffer.
* mddb_file - flag
*
* RETURN:
* 0 - Success
* > 0 - Failure. Errno returned.
*/
static int
snarf_n_modify_bootlist(
FILE *fp, /* File pointer to snarf from */
char *tname, /* name of the temporary file */
char *buf, /* Buffer to read into */
int bufsz, /* buffer size */
ftype_t mddb_file /* flag to indicate if its /etc/system or md.conf */
)
{
FILE *tfp;
int rval = RET_SUCCESS;
char *fname = SYSTEM_FILE;
char *mddb_start = BEGMDDBSTR;
char *mddb_end = ENDMDDBSTR;
convflag_t cstatus = MD_STR_NOTFOUND;
if (mddb_file == MDDB_MDCONF_FILE) {
fname = MD_CONF;
mddb_start = NEW_BEGMDDBSTR;
mddb_end = NEW_ENDMDDBSTR;
}
if ((tfp = fopen(tname, "a")) == NULL)
return (errno);
debug_printf("Convert from %s\n", fname);
rewind(fp);
while (fgets(buf, bufsz, fp) != NULL) {
if (strcmp(buf, mddb_start) == 0) {
cstatus = MD_STR_START;
if (fprintf(tfp, "%s", NEW_BEGMDDBSTR) < 0) {
rval = errno;
break;
}
continue;
}
if (cstatus == MD_STR_START) {
if (strcmp(buf, mddb_end) == 0) {
cstatus = MD_STR_DONE;
if (fprintf(tfp, "%s", NEW_ENDMDDBSTR) < 0) {
rval = errno;
break;
}
if (mddb_file == MDDB_MDCONF_FILE)
continue;
else
break;
}
rval = parse_bootlist(buf, tfp);
if (rval == RET_SUCCESS)
continue;
else
break;
}
if (mddb_file == MDDB_MDCONF_FILE) {
if (fprintf(tfp, "%s\n", buf) < 0) {
rval = errno;
break;
}
}
} /* while (fgets */
if (cstatus == MD_STR_NOTFOUND || cstatus == MD_STR_START)
rval = RET_ERROR;
(void) fclose(tfp);
return (rval);
}
/*
* FUNCTION: convert_bootlist
* Get the bootlist from $ROOT/etc/system and add modified bootlist to
* md.conf.
* The function converts the mddb_boolist format from that in /etc/system
* to md.conf. Also new fields are added to handle the devid id format.
* A copy of md.conf is created and the new entries are added to it.
* The name of the new file is returned to the calling program.
*
* Input: system file name
* md.conf file name
* pointer to temp file name.
* RETURN:
* *tname - name of the file that has md.conf + new mddb_boolist entries
* 0 - success
* -1 - mddb_bootlist not found
* > 0 - errno
*
*/
int
convert_bootlist(
char *sname, /* system file name */
char *mdconf, /* md.conf file name */
char **tname /* temp file name */
)
{
FILE *fp;
char cmd_buf[MDDB_BOOTLIST_MAX_LEN];
int retval = RET_SUCCESS;
/* check names */
assert(sname != NULL);
assert(tname != NULL);
/* get temp name */
*tname = tmpnam(NULL);
if ((fp = fopen(sname, "r")) == NULL) {
retval = errno;
goto out;
}
if (valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN) == RET_SUCCESS) {
if ((retval = copyfile(mdconf, *tname)) == RET_ERROR) {
debug_printf("convert_bootlist: copy %s %s failed\n",
mdconf, *tname);
goto out;
}
retval = snarf_n_modify_bootlist(fp, *tname, cmd_buf,
MDDB_BOOTLIST_MAX_LEN, MDDB_SYS_FILE);
} else {
(void) fclose(fp); /* close system file */
if ((fp = fopen(mdconf, "r")) == NULL) {
retval = errno;
goto out;
}
if (valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN) == RET_ERROR) {
retval = RET_ERROR;
goto out;
}
retval = snarf_n_modify_bootlist(fp, *tname, cmd_buf,
MDDB_BOOTLIST_MAX_LEN, MDDB_MDCONF_FILE);
}
out:
debug_printf("convert_bootlist: retval %d\n", retval);
if (fp != NULL)
(void) fclose(fp);
if ((retval != RET_SUCCESS) && (*tname != NULL)) {
(void) unlink(*tname);
free(*tname);
}
return (retval);
}