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boinc/client/cs_platforms.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2021 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// Determine which platforms are supported and provide a way
// of exposing that information to the rest of the client.
#include "cpp.h"
#ifdef _WIN32
#include "boinc_win.h"
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
LPFN_ISWOW64PROCESS fnIsWow64Process;
#else
#include "config.h"
#include <cstdio>
#include <cstdlib>
#include <signal.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#endif
#ifdef __APPLE__
#include <sys/sysctl.h>
extern int compareOSVersionTo(int toMajor, int toMinor);
#endif
#include "error_numbers.h"
#include "filesys.h"
#include "str_util.h"
#include "str_replace.h"
#include "util.h"
#include "client_types.h"
#include "client_state.h"
#include "client_msgs.h"
#include "log_flags.h"
#include "project.h"
// return the primary platform id.
//
const char* CLIENT_STATE::get_primary_platform() {
return platforms[0].name.c_str();
}
// add a platform to the vector.
//
void CLIENT_STATE::add_platform(const char* platform) {
PLATFORM pp;
pp.name = platform;
platforms.push_back(pp);
}
#if defined (__APPLE__) && defined (__arm64__)
// detect a possibly emulated x86_64 CPU and its features on a Apple Silicon M1 Mac
//
int launch_child_process_to_detect_emulated_cpu() {
int prog;
char data_dir[MAXPATHLEN];
char execpath[MAXPATHLEN];
int retval = 0;
retval = boinc_delete_file(EMULATED_CPU_INFO_FILENAME);
if (retval) {
msg_printf(0, MSG_INFO,
"Failed to delete old %s. error code %d",
EMULATED_CPU_INFO_FILENAME, retval
);
} else {
for (;;) {
if (!boinc_file_exists(EMULATED_CPU_INFO_FILENAME)) break;
boinc_sleep(0.01);
}
}
// write the EMULATED_CPU_INFO into the BOINC data dir
boinc_getcwd(data_dir);
// the execuable should be in BOINC data dir
strncpy(execpath, data_dir, sizeof(execpath));
strncat(execpath, "/" EMULATED_CPU_INFO_EXECUTABLE, sizeof(execpath) - strlen(execpath) - 1);
if (log_flags.coproc_debug) {
msg_printf(0, MSG_INFO,
"[x86_64-M1] launching child process at %s",
execpath
);
}
int argc = 1;
char* const argv[2] = {
const_cast<char *>(execpath),
NULL
};
retval = run_program(
data_dir,
execpath,
argc,
argv,
0,
prog
);
if (retval) {
if (log_flags.coproc_debug) {
msg_printf(0, MSG_INFO,
"[x86_64-M1] run_program of child process returned error %d",
retval
);
}
return retval;
}
retval = get_exit_status(prog);
if (retval) {
char buf[200];
if (WIFEXITED(retval)) {
int code = WEXITSTATUS(retval);
snprintf(buf, sizeof(buf), "process exited with status %d: %s", code, strerror(code));
} else if (WIFSIGNALED(retval)) {
int sig = WTERMSIG(retval);
snprintf(buf, sizeof(buf), "process was terminated by signal %d", sig);
} else {
snprintf(buf, sizeof(buf), "unknown status %d", retval);
}
msg_printf(0, MSG_INFO,
"Emulated CPU detection failed: %s",
buf
);
}
return retval;
}
#endif
// determine the list of supported platforms.
//
void CLIENT_STATE::detect_platforms() {
#if defined(_WIN32) && !defined(__CYGWIN32__)
#if defined(_WIN64) && defined(_M_X64)
add_platform("windows_x86_64");
add_platform("windows_intelx86");
#else
// see if 32-bit client is running on 64-bit machine
//
BOOL bIsWow64 = FALSE;
fnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(
GetModuleHandle(TEXT("kernel32")),"IsWow64Process"
);
if (fnIsWow64Process) {
if (fnIsWow64Process(GetCurrentProcess(), &bIsWow64)) {
if (bIsWow64) {
add_platform("windows_x86_64");
}
}
}
add_platform("windows_intelx86");
#endif
#elif defined(__APPLE__)
#ifdef __x86_64__
add_platform("x86_64-apple-darwin");
if (compareOSVersionTo(10, 15) < 0) {
add_platform("i686-apple-darwin");
}
#elif defined(__arm64__)
add_platform("arm64-apple-darwin");
if (!launch_child_process_to_detect_emulated_cpu()) {
add_platform("x86_64-apple-darwin");
}
#else
#error Mac client now requires a 64-bit system
#endif
#elif defined(__linux__) && ( defined(__i386__) || defined(__x86_64__) )
// Let's try to support both 32 and 64 bit applications in one client
// regardless of whether it is a 32 or 64 bit client
const char *uname[]={"/bin/uname","/usr/bin/uname",0};
int eno=0, support64=0, support32=0;
FILE *f;
char cmdline[256];
cmdline[0]=0;
// find the 'uname' executable
//
while (1) {
if (boinc_file_exists(uname[eno])) break;
eno++;
if (uname[eno] == 0) break;
}
// run it and check the kernel machine architecture.
if ( uname[eno] != 0 ) {
strlcpy(cmdline,uname[eno],256);
strlcat(cmdline," -m",256);
if ((f=popen(cmdline,"r"))) {
while (!std::feof(f)) {
if (!fgets(cmdline,256,f)) break;
if (strstr(cmdline,"x86_64")) support64=1;
}
pclose(f);
}
if (!support64) {
// we're running on a 32 bit kernel, so we will assume
// we are i686-pc-linux-gnu only.
support32=1;
} else {
// we're running on a 64 bit kernel.
// Now comes the hard part. How to tell whether we can run
// 32-bit binaries.
#if defined(__i386__) && !defined(__x86_64__)
// If we're a 32 bit binary, then we obviously can.
support32=1;
#else
// If we're a 64 bit binary, the check is a bit harder.
// We'll use the file command to check installation of
// 32 bit libraries or executables.
const char *file[]={"/usr/bin/file","/bin/file",0};
const char *libdir[]={"/lib","/lib32","/lib/32","/usr/lib","/usr/lib32","/usr/lib/32"};
const int nlibdirs=sizeof(libdir)/sizeof(char *);
// find 'file'
//
eno=0;
while (1) {
if (boinc_file_exists(file[eno])) break;
eno++;
if (file[eno] == 0) break;
}
// now try to find a 32-bit C library.
if (file[eno] != 0) {
int i;
for (i=0; i < nlibdirs; i++) {
struct dirent *entry;
DIR *a = opendir(libdir[i]);
// if dir doesn't exist, do the next one
if (a == 0) continue;
// dir exists. read each entry until you find a 32bit lib
while ((support32 == 0) && ((entry=readdir(a)) != 0)) {
strlcpy(cmdline, file[eno], 256);
strlcat(cmdline, " -L ", 256);
strlcat(cmdline, libdir[i], 256);
strlcat(cmdline, "/", 256);
strlcat(cmdline, entry->d_name, 256);
f = popen(cmdline, "r");
if (f) {
while (!std::feof(f)) {
if (!fgets(cmdline,256,f)) break;
// If the library is 32-bit ELF, then we're
// golden.
if (strstr(cmdline, "ELF") && strstr(cmdline, "32-bit")) support32=1;
}
pclose(f);
}
}
closedir(a);
if (support32) break;
}
}
#endif
}
}
if (support64) {
add_platform("x86_64-pc-linux-gnu");
}
if (support32) {
add_platform("i686-pc-linux-gnu");
}
if (!(support64 || support32)) {
// Something went wrong. Assume HOSTTYPE and HOSTTYPEALT
// are correct
add_platform(HOSTTYPE);
#ifdef HOSTTYPEALT
add_platform(HOSTTYPEALT);
#endif
}
#elif defined(sun)
// Check if we can run 64-bit binaries...
// this assumes there isn't a 64-bit only solaris. (Every 64-bit solaris can run 32 bit binaries)
#if defined(__sparc) || defined(sparc)
char *exe64=const_cast<char *>("/usr/bin/sparcv9/ls");
char *platform64=const_cast<char *>("sparc64-sun-solaris");
char *platform32=const_cast<char *>("sparc-sun-solaris");
#elif defined(__i386) || defined(i386) || defined(__amd64) || defined(__x86_64__)
char *exe64=const_cast<char *>("/usr/bin/amd64/ls");
char *platform64=const_cast<char *>("x86_64-pc-solaris");
char *platform32=const_cast<char *>("i686-pc-solaris");
#else
#define UNKNOWN_SOLARIS_PROCESSOR
#endif
#ifndef UNKNOWN_SOLARIS_PROCESSOR
FILE *f=fopen(exe64,"r");
char *argv[3];
pid_t pid;
int rv=0;
argv[0]=exe64;
argv[1]=argv[0];
argv[2]=NULL;
if (f) {
fclose(f);
if (0==(pid=fork())) {
// we are in child process
freopen("/dev/null","a",stderr);
freopen("/dev/null","a",stdout);
rv=execv(argv[0],argv);
exit(rv);
} else {
// we are in the parent process.
time_t start=time(0);
int done;
// wait 5 seconds or until the process exits.
do {
done=waitpid(pid,&rv,WNOHANG);
sleep(1);
} while (!done && ((time(0)-start)<5));
// if we timed out, kill the process
if ((time(0)-start)>=5) {
kill(pid,SIGKILL);
done=-1;
}
// if we exited with success add the 64 bit platform
if ((done == pid) && (rv == 0)) {
add_platform(platform64);
}
}
}
add_platform(platform32);
// the following platform is obsolete, but we'll add it anyway.
#if defined(__sparc) || defined(sparc)
add_platform("sparc-sun-solaris2.7");
#endif
#else // !defined(UNKNOWN_SOLARIS_PROCESSOR)
add_platform(HOSTTYPE);
#ifdef HOSTTYPEALT
add_platform(HOSTTYPEALT);
#endif
#endif // !defined(UNKNOWN_SOLARIS_PROCESSOR)
#else
// Any other platform, fall back to the previous method
add_platform(HOSTTYPE);
#ifdef HOSTTYPEALT
add_platform(HOSTTYPEALT);
#endif
#endif
if (cc_config.no_alt_platform) {
PLATFORM p = platforms[0];
platforms.clear();
platforms.push_back(p);
}
// add platforms listed in cc_config.xml AFTER the above.
//
for (unsigned int i=0; i<cc_config.alt_platforms.size(); i++) {
add_platform(cc_config.alt_platforms[i].c_str());
}
}
// write XML list of supported platforms
//
void CLIENT_STATE::write_platforms(PROJECT* p, FILE *f) {
if (p && p->anonymous_platform) {
fprintf(f, " <platform_name>anonymous</platform_name>\n");
} else {
fprintf(f,
" <platform_name>%s</platform_name>\n", get_primary_platform()
);
for (unsigned int i=1; i<platforms.size(); i++) {
PLATFORM& platform = platforms[i];
fprintf(f,
" <alt_platform>\n"
" <name>%s</name>\n"
" </alt_platform>\n",
platform.name.c_str()
);
}
}
}
bool CLIENT_STATE::is_supported_platform(const char* p) {
for (unsigned int i=0; i<platforms.size(); i++) {
PLATFORM& platform = platforms[i];
if (!strcmp(p, platform.name.c_str())) {
return true;
}
}
return false;
}
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