/*
* 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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Included files
*/
#include <arpa/inet.h>
#include <mk/defs.h>
#include <mksh/misc.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <rpc/rpc.h> /* host2netname(), netname2host() */
#include <libintl.h>
/*
* Defined macros
*/
/*
* typedefs & structs
*/
/*
* Static variables
*/
/*
* File table of contents
*/
static int get_max(wchar_t **ms_address, wchar_t *hostname);
static Boolean pskip_comment(wchar_t **cp_address);
static void pskip_till_next_word(wchar_t **cp);
static Boolean pskip_white_space(wchar_t **cp_address);
/*
* read_make_machines(Name make_machines_name)
*
* For backwards compatibility w/ PMake 1.x, when DMake 2.x is
* being run in parallel mode, DMake should parse the PMake startup
* file $(HOME)/.make.machines to get the PMake max jobs.
*
* Return value:
* int of PMake max jobs
*
* Parameters:
* make_machines_name Name of .make.machines file
*
*/
int
read_make_machines(Name make_machines_name)
{
wchar_t c;
Boolean default_make_machines;
struct hostent *hp;
wchar_t local_host[MAX_HOSTNAMELEN + 1];
char local_host_mb[MAX_HOSTNAMELEN + 1] = "";
int local_host_wslen;
wchar_t full_host[MAXNETNAMELEN + 1];
int full_host_wslen = 0;
char *homedir;
Name MAKE_MACHINES;
struct stat make_machines_buf;
FILE *make_machines_file;
wchar_t *make_machines_list = NULL;
char *make_machines_list_mb = NULL;
wchar_t make_machines_path[MAXPATHLEN];
char mb_make_machines_path[MAXPATHLEN];
wchar_t *mp;
wchar_t *ms;
int pmake_max_jobs = 0;
struct utsname uts_info;
MBSTOWCS(wcs_buffer, "MAKE_MACHINES");
MAKE_MACHINES = GETNAME(wcs_buffer, FIND_LENGTH);
/* Did the user specify a .make.machines file on the command line? */
default_make_machines = false;
if (make_machines_name == NULL) {
/* Try reading the default .make.machines file, in $(HOME). */
homedir = getenv("HOME");
if ((homedir != NULL) && (strlen(homedir) < (sizeof(mb_make_machines_path) - 16))) {
sprintf(mb_make_machines_path,
"%s/.make.machines", homedir);
MBSTOWCS(make_machines_path, mb_make_machines_path);
make_machines_name = GETNAME(make_machines_path, FIND_LENGTH);
default_make_machines = true;
}
if (make_machines_name == NULL) {
/*
* No $(HOME)/.make.machines file.
* Return 0 for PMake max jobs.
*/
return(0);
}
}
/*
make_machines_list_mb = getenv(MAKE_MACHINES->string_mb);
*/
/* Open the .make.machines file. */
if ((make_machines_file = fopen(make_machines_name->string_mb, "r")) == NULL) {
if (!default_make_machines) {
/* Error opening .make.machines file. */
fatal(gettext("Open of %s failed: %s"),
make_machines_name->string_mb,
errmsg(errno));
} else {
/*
* No $(HOME)/.make.machines file.
* Return 0 for PMake max jobs.
*/
return(0);
}
/* Stat the .make.machines file to get the size of the file. */
} else if (fstat(fileno(make_machines_file), &make_machines_buf) < 0) {
/* Error stat'ing .make.machines file. */
fatal(gettext("Stat of %s failed: %s"),
make_machines_name->string_mb,
errmsg(errno));
} else {
/* Allocate memory for "MAKE_MACHINES=<contents of .m.m>" */
make_machines_list_mb =
(char *) getmem((int) (strlen(MAKE_MACHINES->string_mb) +
2 +
make_machines_buf.st_size));
sprintf(make_machines_list_mb,
"%s=",
MAKE_MACHINES->string_mb);
/* Read in the .make.machines file. */
if (fread(make_machines_list_mb + strlen(MAKE_MACHINES->string_mb) + 1,
sizeof(char),
(int) make_machines_buf.st_size,
make_machines_file) != make_machines_buf.st_size) {
/*
* Error reading .make.machines file.
* Return 0 for PMake max jobs.
*/
warning(gettext("Unable to read %s"),
make_machines_name->string_mb);
(void) fclose(make_machines_file);
retmem_mb((caddr_t) make_machines_list_mb);
return(0);
} else {
(void) fclose(make_machines_file);
/* putenv "MAKE_MACHINES=<contents of .m.m>" */
*(make_machines_list_mb +
strlen(MAKE_MACHINES->string_mb) +
1 +
make_machines_buf.st_size) = (int) nul_char;
if (putenv(make_machines_list_mb) != 0) {
warning(gettext("Couldn't put contents of %s in environment"),
make_machines_name->string_mb);
} else {
make_machines_list_mb += strlen(MAKE_MACHINES->string_mb) + 1;
make_machines_list = ALLOC_WC(strlen(make_machines_list_mb) + 1);
(void) mbstowcs(make_machines_list,
make_machines_list_mb,
(strlen(make_machines_list_mb) + 1));
}
}
}
uname(&uts_info);
strcpy(local_host_mb, &uts_info.nodename[0]);
MBSTOWCS(local_host, local_host_mb);
local_host_wslen = wcslen(local_host);
// There is no getdomainname() function on Solaris.
// And netname2host() function does not work on Linux.
// So we have to use different APIs.
if (host2netname(mbs_buffer, NULL, NULL) &&
netname2host(mbs_buffer, mbs_buffer2, MAXNETNAMELEN+1)) {
MBSTOWCS(full_host, mbs_buffer2);
full_host_wslen = wcslen(full_host);
}
for (ms = make_machines_list;
(ms) && (*ms );
) {
/*
* Skip white space and comments till you reach
* a machine name.
*/
pskip_till_next_word(&ms);
/*
* If we haven't reached the end of file, process the
* machine name.
*/
if (*ms) {
/*
* If invalid machine name decrement counter
* and skip line.
*/
mp = ms;
SKIPWORD(ms);
c = *ms;
*ms++ = '\0'; /* Append null to machine name. */
/*
* If this was the beginning of a comment
* (we overwrote a # sign) and it's not
* end of line yet, shift the # sign.
*/
if ((c == '#') && (*ms != '\n') && (*ms)) {
*ms = '#';
}
WCSTOMBS(mbs_buffer, mp);
/*
* Print "Ignoring unknown host" if:
* 1) hostname is longer than MAX_HOSTNAMELEN, or
* 2) hostname is unknown
*/
if ((wcslen(mp) > MAX_HOSTNAMELEN) ||
((hp = gethostbyname(mbs_buffer)) == NULL)) {
warning(gettext("Ignoring unknown host %s"),
mbs_buffer);
SKIPTOEND(ms);
/* Increment ptr if not end of file. */
if (*ms) {
ms++;
}
} else {
/* Compare current hostname with local_host. */
if (wcslen(mp) == local_host_wslen &&
IS_WEQUALN(mp, local_host, local_host_wslen)) {
/*
* Bingo, local_host is in .make.machines.
* Continue reading.
*/
pmake_max_jobs = PMAKE_DEF_MAX_JOBS;
/* Compare current hostname with full_host. */
} else if (wcslen(mp) == full_host_wslen &&
IS_WEQUALN(mp, full_host, full_host_wslen)) {
/*
* Bingo, full_host is in .make.machines.
* Continue reading.
*/
pmake_max_jobs = PMAKE_DEF_MAX_JOBS;
} else {
if (c != '\n') {
SKIPTOEND(ms);
if (*ms) {
ms++;
}
}
continue;
}
/* If we get here, local_host is in .make.machines. */
if (c != '\n') {
/* Now look for keyword 'max'. */
MBSTOWCS(wcs_buffer, "max");
SKIPSPACE(ms);
while ((*ms != '\n') && (*ms)) {
if (*ms == '#') {
pskip_comment(&ms);
} else if (IS_WEQUALN(ms, wcs_buffer, 3)) {
/* Skip "max". */
ms += 3;
pmake_max_jobs = get_max(&ms, mp);
SKIPSPACE(ms);
} else {
warning(gettext("unknown option for host %s"), mbs_buffer);
SKIPTOEND(ms);
break;
}
}
}
break; /* out of outermost for() loop. */
}
}
}
retmem(make_machines_list);
return(pmake_max_jobs);
}
/*
* pskip_till_next_word(cp)
*
* Parameters:
* cp the address of the string pointer.
*
* On return:
* cp points to beginning of machine name.
*
*/
static void
pskip_till_next_word(wchar_t **cp)
{
/*
* Keep recursing until all combinations of white spaces
* and comments have been skipped.
*/
if (pskip_white_space(cp) || pskip_comment(cp)) {
pskip_till_next_word(cp);
}
}
/*
* pskip_white_space(cp_address)
*
* Advances the string pointer so that it points to the first
* non white character (space/tab/linefeed).
*
* Parameters:
* cp_address the address of the string pointer.
*
* Return Value:
* True if the pointer was changed.
*
*/
static Boolean
pskip_white_space(wchar_t **cp_address)
{
wchar_t *cp = *cp_address;
while (*cp && iswspace(*cp)) {
cp++;
}
/* Have we skipped any characters? */
if (cp != *cp_address) {
*cp_address = cp;
return(true);
} else {
return(false);
}
}
/*
* pskip_comment(cp_address)
*
* If cp_address is pointing to '#' (the beginning of a comment),
* increment the pointer till you reach end of line.
*
* Parameters:
* cp_address the address of the string pointer.
*
* Return Value:
* True if the pointer was changed.
*
*/
static Boolean
pskip_comment(wchar_t **cp_address)
{
wchar_t *cp = *cp_address;
/* Is this the beginning of a comment? Skip till end of line. */
if (*cp == '#') {
SKIPTOEND(cp);
}
/* Have we skipped a comment line? */
if (cp != *cp_address) {
*cp_address = cp;
return(true);
} else {
return(false);
}
}
static int
get_max(wchar_t **ms_address, wchar_t *hostname)
{
wchar_t *ms = *ms_address;
int limit = PMAKE_DEF_MAX_JOBS; /* Default setting. */
WCSTOMBS(mbs_buffer, hostname);
/* Look for `='. */
SKIPSPACE(ms);
if ((!*ms) || (*ms == '\n') || (*ms != '=')) {
SKIPTOEND(ms);
warning(gettext("expected `=' after max, ignoring rest of line for host %s"),
mbs_buffer);
*ms_address = ms;
return((int) limit);
} else {
ms++;
SKIPSPACE(ms);
if ((*ms != '\n') && (*ms != '\0')) {
/* We've found, hopefully, a valid "max" value. */
limit = (int) wcstol(ms, &ms, 10);
if (limit < 1) {
limit = PMAKE_DEF_MAX_JOBS;
warning(gettext("max value cannot be less than or equal to zero for host %s"), mbs_buffer);
}
} else {
/* No "max" value after "max=". */
warning(gettext("no max value specified for host %s"), mbs_buffer);
}
*ms_address = ms;
return(limit);
}
}