| Line |
Branch |
Exec |
Source |
| 1 |
|
|
/** |
| 2 |
|
|
* This file is part of the CernVM File System. |
| 3 |
|
|
* |
| 4 |
|
|
* The Fuse module entry point. Dynamically selects either the libfuse3 |
| 5 |
|
|
* cvmfs fuse module or the libfuse2 one, depending on the availability and on |
| 6 |
|
|
* the mount options. |
| 7 |
|
|
* |
| 8 |
|
|
*/ |
| 9 |
|
|
|
| 10 |
|
|
#include <dlfcn.h> |
| 11 |
|
|
#include <unistd.h> |
| 12 |
|
|
|
| 13 |
|
|
#include <cassert> |
| 14 |
|
|
#include <cstdlib> |
| 15 |
|
|
#include <cstring> |
| 16 |
|
|
#include <string> |
| 17 |
|
|
#include <vector> |
| 18 |
|
|
|
| 19 |
|
|
#include "fuse_main.h" |
| 20 |
|
|
#include "util/logging.h" |
| 21 |
|
|
#include "util/platform.h" |
| 22 |
|
|
#include "util/smalloc.h" |
| 23 |
|
|
#include "util/string.h" |
| 24 |
|
|
|
| 25 |
|
|
using namespace stub; // NOLINT |
| 26 |
|
|
|
| 27 |
|
|
|
| 28 |
|
✗ |
int main(int argc, char **argv) { |
| 29 |
|
|
// Getopt option parsing modifies globals and the argv vector |
| 30 |
|
✗ |
int opterr_save = opterr; |
| 31 |
|
✗ |
int optc = argc; |
| 32 |
|
✗ |
assert(optc > 0); |
| 33 |
|
✗ |
char **optv = reinterpret_cast<char **>(smalloc(optc * sizeof(char *))); |
| 34 |
|
✗ |
for (int i = 0; i < optc; ++i) { |
| 35 |
|
✗ |
optv[i] = strdup(argv[i]); |
| 36 |
|
|
} |
| 37 |
|
|
|
| 38 |
|
✗ |
bool debug = false; |
| 39 |
|
✗ |
unsigned enforce_libfuse = 0; |
| 40 |
|
|
int c; |
| 41 |
|
✗ |
opterr = 0; |
| 42 |
|
✗ |
while ((c = getopt(optc, optv, "do:")) != -1) { |
| 43 |
|
✗ |
switch (c) { |
| 44 |
|
✗ |
case 'd': |
| 45 |
|
✗ |
debug = true; |
| 46 |
|
✗ |
break; |
| 47 |
|
✗ |
case 'o': |
| 48 |
|
✗ |
std::vector<std::string> mount_options = SplitString(optarg, ','); |
| 49 |
|
✗ |
for (unsigned i = 0; i < mount_options.size(); ++i) { |
| 50 |
|
✗ |
if (mount_options[i] == "debug") { |
| 51 |
|
✗ |
debug = true; |
| 52 |
|
|
} |
| 53 |
|
|
|
| 54 |
|
✗ |
if (HasPrefix(mount_options[i], "libfuse=", false /*ign_case*/)) { |
| 55 |
|
✗ |
std::vector<std::string> t = SplitString(mount_options[i], '='); |
| 56 |
|
✗ |
enforce_libfuse = String2Uint64(t[1]); |
| 57 |
|
✗ |
if (debug) { |
| 58 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogDebug | kLogStdout, |
| 59 |
|
|
"Debug: enforcing libfuse version %u", enforce_libfuse); |
| 60 |
|
|
} |
| 61 |
|
|
} |
| 62 |
|
|
} |
| 63 |
|
✗ |
break; |
| 64 |
|
|
} |
| 65 |
|
|
} |
| 66 |
|
✗ |
opterr = opterr_save; |
| 67 |
|
✗ |
optind = 1; |
| 68 |
|
✗ |
for (int i = 0; i < optc; ++i) { |
| 69 |
|
✗ |
free(optv[i]); |
| 70 |
|
|
} |
| 71 |
|
✗ |
free(optv); |
| 72 |
|
|
|
| 73 |
|
✗ |
std::string libname_fuse2 = platform_libname("cvmfs_fuse_stub"); |
| 74 |
|
✗ |
std::string libname_fuse3 = platform_libname("cvmfs_fuse3_stub"); |
| 75 |
|
|
|
| 76 |
|
✗ |
std::string error_messages; |
| 77 |
|
|
|
| 78 |
|
✗ |
if (enforce_libfuse > 0) { |
| 79 |
|
✗ |
if ((enforce_libfuse < 2) || (enforce_libfuse > 3)) { |
| 80 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, |
| 81 |
|
|
"Error: invalid libfuse version '%u', valid values are 2 or 3.", |
| 82 |
|
|
enforce_libfuse); |
| 83 |
|
✗ |
return 1; |
| 84 |
|
|
} |
| 85 |
|
|
} |
| 86 |
|
|
|
| 87 |
|
✗ |
std::string local_lib_path = "./"; |
| 88 |
|
✗ |
if (getenv("CVMFS_LIBRARY_PATH") != NULL) { |
| 89 |
|
✗ |
local_lib_path = getenv("CVMFS_LIBRARY_PATH"); |
| 90 |
|
✗ |
if (!local_lib_path.empty() && (*local_lib_path.rbegin() != '/')) |
| 91 |
|
✗ |
local_lib_path.push_back('/'); |
| 92 |
|
|
} |
| 93 |
|
|
|
| 94 |
|
|
// Try loading libfuse3 module, else fallback to version 2 |
| 95 |
|
✗ |
std::vector<std::string> library_paths; |
| 96 |
|
✗ |
if ((enforce_libfuse == 0) || (enforce_libfuse == 3)) { |
| 97 |
|
✗ |
library_paths.push_back(local_lib_path + libname_fuse3); |
| 98 |
|
✗ |
library_paths.push_back("/usr/lib/" + libname_fuse3); |
| 99 |
|
✗ |
library_paths.push_back("/usr/lib64/" + libname_fuse3); |
| 100 |
|
|
#ifdef __APPLE__ |
| 101 |
|
|
library_paths.push_back("/usr/local/lib/" + libname_fuse3); |
| 102 |
|
|
#endif |
| 103 |
|
|
} |
| 104 |
|
✗ |
if ((enforce_libfuse == 0) || (enforce_libfuse == 2)) { |
| 105 |
|
✗ |
library_paths.push_back(local_lib_path + libname_fuse2); |
| 106 |
|
✗ |
library_paths.push_back("/usr/lib/" + libname_fuse2); |
| 107 |
|
✗ |
library_paths.push_back("/usr/lib64/" + libname_fuse2); |
| 108 |
|
|
#ifdef __APPLE__ |
| 109 |
|
|
library_paths.push_back("/usr/local/lib/" + libname_fuse2); |
| 110 |
|
|
#endif |
| 111 |
|
|
} |
| 112 |
|
|
|
| 113 |
|
|
void *library_handle; |
| 114 |
|
✗ |
std::vector<std::string>::const_iterator i = library_paths.begin(); |
| 115 |
|
✗ |
std::vector<std::string>::const_iterator iend = library_paths.end(); |
| 116 |
|
✗ |
for (; i != iend; ++i) { |
| 117 |
|
✗ |
library_handle = dlopen(i->c_str(), RTLD_NOW | RTLD_LOCAL); |
| 118 |
|
✗ |
if (library_handle != NULL) { |
| 119 |
|
✗ |
if (debug) { |
| 120 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogDebug | kLogStdout, "Debug: using library %s", |
| 121 |
|
|
i->c_str()); |
| 122 |
|
|
} |
| 123 |
|
✗ |
break; |
| 124 |
|
|
} |
| 125 |
|
|
|
| 126 |
|
✗ |
error_messages += std::string(dlerror()) + "\n"; |
| 127 |
|
|
} |
| 128 |
|
|
|
| 129 |
|
✗ |
if (!library_handle) { |
| 130 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, |
| 131 |
|
|
"Error: failed to load cvmfs library, tried: '%s'\n%s", |
| 132 |
|
|
JoinStrings(library_paths, "' '").c_str(), error_messages.c_str()); |
| 133 |
|
✗ |
return 1; |
| 134 |
|
|
} |
| 135 |
|
|
|
| 136 |
|
|
CvmfsStubExports **exports_ptr = reinterpret_cast<CvmfsStubExports **>( |
| 137 |
|
✗ |
dlsym(library_handle, "g_cvmfs_stub_exports")); |
| 138 |
|
✗ |
if (exports_ptr == NULL) { |
| 139 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, |
| 140 |
|
|
"Error: symbol g_cvmfs_stub_exports not found"); |
| 141 |
|
✗ |
return 1; |
| 142 |
|
|
} |
| 143 |
|
|
|
| 144 |
|
✗ |
return (*exports_ptr)->fn_main(argc, argv); |
| 145 |
|
|
} |
| 146 |
|
|
|
| 147 |
|
|
|