meta_systemfile.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Just in case we're not in a build environment, make sure that
* TEXT_DOMAIN gets set to something.
*/
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
/*
* patch /kernel/drv/md.conf file
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <meta.h>
#include <sys/lvm/md_mddb.h>
/*
* magic strings in system
*/
#define BEGROOTSTR "* Begin MDD root info (do not edit)\n"
#define ENDROOTSTR "* End MDD root info (do not edit)\n"
#define BEGMDDBSTR "# Begin MDD database info (do not edit)\n"
#define ENDMDDBSTR "# End MDD database info (do not edit)\n"
/*
* copy system file, yank root and database lines
*/
int
meta_systemfile_copy(
char *sname, /* system file name */
int doroot, /* remove mdd root stuff */
int domddb, /* remove mdd database stuff */
int doit, /* really copy file */
int verbose, /* show what we're doing */
char **tname, /* returned temp file name */
FILE **tfp, /* returned open FILE */
md_error_t *ep /* returned error */
)
{
FILE *fp;
struct stat sbuf;
char buf[MDDB_BOOTLIST_MAX_LEN];
int delroot = 0;
int delmddb = 0;
/* check names */
assert(sname != NULL);
assert(tname != NULL);
assert(tfp != NULL);
/* get temp name */
*tfp = NULL;
*tname = Malloc(strlen(sname) + strlen(".tmp") + 1);
(void) strcpy(*tname, sname);
(void) strcat(*tname, ".tmp");
/* copy system file, yank stuff */
if (((fp = fopen(sname, "r")) == NULL) ||
(fstat(fileno(fp), &sbuf) != 0)) {
if (errno != ENOENT) {
(void) mdsyserror(ep, errno, sname);
goto out;
}
}
if (doit) {
if ((*tfp = fopen(*tname, "w")) == NULL) {
/*
* If we are on the miniroot we need to create
* files in /var/tmp. Opening a writable file
* in the miniroot result is EROFS error.
*/
if (errno != EROFS) {
(void) mdsyserror(ep, errno, *tname);
goto out;
}
Free(*tname);
*tname = tempnam("/var/tmp", "svm_");
if (*tname == NULL) {
(void) mdsyserror(ep, errno, NULL);
goto out;
}
if ((*tfp = fopen(*tname, "w")) == NULL) {
(void) mdsyserror(ep, errno, *tname);
goto out;
}
}
if (fp != NULL) {
if ((fchmod(fileno(*tfp), (sbuf.st_mode & 0777))
!= 0) ||
(fchown(fileno(*tfp), sbuf.st_uid, sbuf.st_gid)
!= 0)) {
(void) mdsyserror(ep, errno, *tname);
goto out;
}
}
}
if (verbose) {
(void) printf(dgettext(TEXT_DOMAIN,
"Delete the following lines from %s:\n\n"), sname);
}
while ((fp != NULL) && (fgets(buf, sizeof (buf), fp) != NULL)) {
if ((doroot) && (strcmp(buf, BEGROOTSTR) == 0)) {
delroot = 1;
if (verbose)
(void) printf("%s", buf);
continue;
}
if (delroot) {
if (strcmp(buf, ENDROOTSTR) == 0)
delroot = 0;
if (verbose)
(void) printf("%s", buf);
continue;
}
if ((domddb) && (strcmp(buf, BEGMDDBSTR) == 0)) {
delmddb = 1;
if (verbose)
(void) printf("%s", buf);
continue;
}
if (delmddb) {
if (strcmp(buf, ENDMDDBSTR) == 0)
delmddb = 0;
if (verbose)
(void) printf("%s", buf);
continue;
}
if (doit) {
if (fputs(buf, *tfp) == EOF) {
(void) mdsyserror(ep, errno, *tname);
goto out;
}
}
}
if (fp != NULL) {
if ((! feof(fp)) ||
(fclose(fp) != 0)) {
(void) mdsyserror(ep, errno, sname);
goto out;
}
fp = NULL;
}
if (verbose)
(void) printf("\n");
/* make sure we didn't stop mid-delete */
if ((delroot) || (delmddb)) {
(void) mderror(ep, MDE_SYSTEM_FILE, sname);
goto out;
}
/* flush stuff */
if (doit) {
if ((fflush(*tfp) != 0) ||
(fsync(fileno(*tfp)) != 0)) {
(void) mdsyserror(ep, errno, *tname);
goto out;
}
}
/* return success */
return (0);
/* cleanup, return error */
out:
if (fp != NULL)
(void) fclose(fp);
if (*tname != NULL) {
(void) unlink(*tname);
Free(*tname);
}
if (*tfp != NULL)
(void) fclose(*tfp);
return (-1);
}
/*
* append root on MD lines to system
*/
int
meta_systemfile_append_mdroot(
mdname_t *rootnp, /* root device name */
char *sname, /* system file name */
char *tname, /* temp file name */
FILE *tfp, /* temp FILE */
int ismeta, /* is a metadevice */
int doit, /* really patch file */
int verbose, /* show what we're doing */
md_error_t *ep
)
{
char *longblkname;
/* check names */
assert(sname != NULL);
assert(tname != NULL);
assert(!doit || tfp != NULL);
/* get root /devices name */
if ((longblkname = metagetdevicesname(rootnp, ep)) == NULL)
return (-1);
/* add header */
if (verbose) {
(void) printf(dgettext(TEXT_DOMAIN,
"Add the following lines to %s:\n\n"), sname);
(void) printf("%s", BEGROOTSTR);
}
if (doit) {
if (fprintf(tfp, "%s", BEGROOTSTR) == EOF) {
return (mdsyserror(ep, errno, tname));
}
}
/* add rootdev */
if (ismeta) {
if (verbose)
(void) printf("rootdev:%s\n", longblkname);
if (doit) {
if (fprintf(tfp, "rootdev:%s\n", longblkname) == EOF) {
return (mdsyserror(ep, errno, tname));
}
}
}
/* add trailer */
if (verbose) {
(void) printf("%s\n", ENDROOTSTR);
}
if (doit) {
if (fprintf(tfp, "%s", ENDROOTSTR) == EOF) {
return (mdsyserror(ep, errno, tname));
}
}
/* flush stuff */
if (doit) {
if ((fflush(tfp) != 0) ||
(fsync(fileno(tfp)) != 0)) {
return (mdsyserror(ep, errno, tname));
}
}
/* return success */
return (0);
}
/*
* parse mddb.cf line
*
* Caller of this routine needs to free the device id string that
* is passed back during a successful return.
*/
static int
confline(
char *line, /* line in file */
char **driver, /* returned driver name */
minor_t *mnump, /* returned minor number */
daddr_t *block, /* returned block offset */
char **devid_char_pp /* returned device id string */
)
{
char *p = line;
int chksum = 0;
int i;
uint_t devid_size;
if (*p == '#') {
return (-1);
}
*driver = p;
while ((*p != ' ') && (*p != '\t'))
chksum += *p++;
if (*driver == p) {
return (-1);
}
*p++ = '\0';
*mnump = strtoul(p, &p, 10);
chksum += *mnump;
*block = strtol(p, &p, 10);
chksum += *block;
/* parse out devid */
while ((*p == ' ') || (*p == '\t')) {
p++;
}
i = strcspn(p, " \t");
*devid_char_pp = Malloc(i+1);
(void) strncpy(*devid_char_pp, p, i);
(*devid_char_pp)[i] = '\0';
devid_size = i;
p += devid_size;
for (i = 0; i < devid_size; i++) {
chksum += (*devid_char_pp)[i];
}
chksum += strtol(p, &p, 10);
if (chksum != 42) {
Free (*devid_char_pp);
devid_char_pp = NULL;
return (-1);
}
return (0);
}
/*
* append MDDB lines to system
*/
int
meta_systemfile_append_mddb(
char *cname, /* mddb.cf file name */
char *sname, /* system file name */
char *tname, /* temp file name */
FILE *tfp, /* temp FILE */
int doit, /* really patch file */
int verbose, /* show what we're doing */
md_error_t *ep /* returned error */
)
{
FILE *cfp = NULL;
char buf[1024];
char *p;
int i;
char *driver;
minor_t mnum;
daddr_t block;
char line[MDDB_BOOTLIST_MAX_LEN];
char entry[MDDB_BOOTLIST_MAX_LEN];
char *devid_char_p = NULL;
struct stat statbuf;
/* check names */
assert(cname != NULL);
assert(sname != NULL);
assert(tname != NULL);
assert(!doit || tfp != NULL);
/* open database conf file */
if ((cfp = fopen(cname, "r")) == NULL) {
(void) mdsyserror(ep, errno, cname);
goto out;
}
/* Check that it is an ordinary file */
if (stat(cname, &statbuf) != 0) {
(void) mdsyserror(ep, errno, cname);
goto out;
}
if ((statbuf.st_mode & S_IFMT) != S_IFREG) {
(void) mderror(ep, MDE_MDDB_FILE, cname);
goto out;
}
/* add header */
if (verbose) {
(void) printf(dgettext(TEXT_DOMAIN,
"Add the following lines to %s:\n\n"), sname);
(void) printf("%s", BEGMDDBSTR);
}
if (doit) {
if (fprintf(tfp, "%s", BEGMDDBSTR) == EOF) {
(void) mdsyserror(ep, errno, tname);
goto out;
}
}
/* append database lines */
while (((p = fgets(buf, sizeof (buf), cfp)) != NULL) &&
(confline(buf, &driver, &mnum, &block, &devid_char_p) != 0))
;
for (i = 1; ((p != NULL) && (i <= MDDB_MAX_PATCH)); ++i) {
(void) snprintf(line, sizeof (line),
"mddb_bootlist%d=\"%s:%lu:%ld:%s",
i, driver, mnum, block, devid_char_p);
if (devid_char_p != NULL) {
free(devid_char_p);
devid_char_p = NULL;
}
while ((p = fgets(buf, sizeof (buf), cfp)) != NULL) {
if (confline(buf, &driver, &mnum, &block,
&devid_char_p) != 0) {
continue;
}
(void) snprintf(entry, sizeof (entry), " %s:%lu:%ld:%s",
driver, mnum, block, devid_char_p);
if ((strlen(line) + strlen(entry) + 4) > sizeof (line))
break;
(void) strcat(line, entry);
if (devid_char_p != NULL) {
free(devid_char_p);
devid_char_p = NULL;
}
}
if (verbose)
/* CSTYLED */
(void) printf("%s\";\n", line);
if (doit) {
/* CSTYLED */
if (fprintf(tfp, "%s\";\n", line) <= 0) {
(void) mdsyserror(ep, errno, tname);
goto out;
}
}
}
if (devid_char_p != NULL) {
free(devid_char_p);
devid_char_p = NULL;
}
/* add trailer */
if (verbose)
(void) printf("%s\n", ENDMDDBSTR);
if (doit) {
if (fprintf(tfp, "%s", ENDMDDBSTR) == EOF) {
(void) mdsyserror(ep, errno, tname);
goto out;
}
}
/* close database conf file */
if (fclose(cfp) != 0) {
cfp = NULL;
(void) mdsyserror(ep, errno, cname);
goto out;
}
cfp = NULL;
/* flush stuff */
if (doit) {
if ((fflush(tfp) != 0) ||
(fsync(fileno(tfp)) != 0)) {
(void) mdsyserror(ep, errno, tname);
goto out;
}
}
/* return success */
return (0);
/* cleanup, return error */
out:
if (cfp != NULL)
(void) fclose(cfp);
return (-1);
}