diff options
Diffstat (limited to 'src/common/compat.c')
| -rw-r--r-- | src/common/compat.c | 109 |
1 files changed, 71 insertions, 38 deletions
diff --git a/src/common/compat.c b/src/common/compat.c index e16dfb1d2b..9758751122 100644 --- a/src/common/compat.c +++ b/src/common/compat.c @@ -1651,7 +1651,7 @@ get_max_sockets(void) * fail by returning -1 and <b>max_out</b> is untouched. * * If we are unable to set the limit value because of setrlimit() failing, - * return -1 and <b>max_out</b> is set to the current maximum value returned + * return 0 and <b>max_out</b> is set to the current maximum value returned * by getrlimit(). * * Otherwise, return 0 and store the maximum we found inside <b>max_out</b> @@ -1716,13 +1716,14 @@ set_max_file_descriptors(rlim_t limit, int *max_out) rlim.rlim_cur = rlim.rlim_max; if (setrlimit(RLIMIT_NOFILE, &rlim) != 0) { - int bad = 1; + int couldnt_set = 1; + const int setrlimit_errno = errno; #ifdef OPEN_MAX uint64_t try_limit = OPEN_MAX - ULIMIT_BUFFER; if (errno == EINVAL && try_limit < (uint64_t) rlim.rlim_cur) { /* On some platforms, OPEN_MAX is the real limit, and getrlimit() is * full of nasty lies. I'm looking at you, OSX 10.5.... */ - rlim.rlim_cur = try_limit; + rlim.rlim_cur = MIN((rlim_t) try_limit, rlim.rlim_cur); if (setrlimit(RLIMIT_NOFILE, &rlim) == 0) { if (rlim.rlim_cur < (rlim_t)limit) { log_warn(LD_CONFIG, "We are limited to %lu file descriptors by " @@ -1737,14 +1738,13 @@ set_max_file_descriptors(rlim_t limit, int *max_out) (unsigned long)try_limit, (unsigned long)OPEN_MAX, (unsigned long)rlim.rlim_max); } - bad = 0; + couldnt_set = 0; } } #endif /* OPEN_MAX */ - if (bad) { + if (couldnt_set) { log_warn(LD_CONFIG,"Couldn't set maximum number of file descriptors: %s", - strerror(errno)); - return -1; + strerror(setrlimit_errno)); } } /* leave some overhead for logs, etc, */ @@ -2689,22 +2689,33 @@ MOCK_IMPL(const char *, get_uname, (void)) #ifdef _WIN32 OSVERSIONINFOEX info; int i; + int is_client = 0; + int is_server = 0; const char *plat = NULL; static struct { - unsigned major; unsigned minor; const char *version; + unsigned major; unsigned minor; + const char *client_version; const char *server_version; } win_version_table[] = { - { 6, 2, "Windows 8" }, - { 6, 1, "Windows 7" }, - { 6, 0, "Windows Vista" }, - { 5, 2, "Windows Server 2003" }, - { 5, 1, "Windows XP" }, - { 5, 0, "Windows 2000" }, - /* { 4, 0, "Windows NT 4.0" }, */ - { 4, 90, "Windows Me" }, - { 4, 10, "Windows 98" }, - /* { 4, 0, "Windows 95" } */ - { 3, 51, "Windows NT 3.51" }, - { 0, 0, NULL } + /* This table must be sorted in descending order. + * Sources: + * https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions + * https://docs.microsoft.com/en-us/windows/desktop/api/winnt/ + * ns-winnt-_osversioninfoexa#remarks + */ + /* Windows Server 2019 is indistinguishable from Windows Server 2016 + * using GetVersionEx(). + { 10, 0, NULL, "Windows Server 2019" }, */ + { 10, 0, "Windows 10", "Windows Server 2016" }, + { 6, 3, "Windows 8.1", "Windows Server 2012 R2" }, + { 6, 2, "Windows 8", "Windows Server 2012" }, + { 6, 1, "Windows 7", "Windows Server 2008 R2" }, + { 6, 0, "Windows Vista", "Windows Server 2008" }, + { 5, 2, "Windows XP Professional", "Windows Server 2003" }, + /* Windows XP did not have a server version, but we need something here */ + { 5, 1, "Windows XP", "Windows XP Server" }, + { 5, 0, "Windows 2000 Professional", "Windows 2000 Server" }, + /* Earlier versions are not supported by GetVersionEx(). */ + { 0, 0, NULL, NULL } }; memset(&info, 0, sizeof(info)); info.dwOSVersionInfoSize = sizeof(info); @@ -2714,25 +2725,34 @@ MOCK_IMPL(const char *, get_uname, (void)) uname_result_is_set = 1; return uname_result; } - if (info.dwMajorVersion == 4 && info.dwMinorVersion == 0) { - if (info.dwPlatformId == VER_PLATFORM_WIN32_NT) - plat = "Windows NT 4.0"; - else - plat = "Windows 95"; +#ifdef VER_NT_SERVER + if (info.wProductType == VER_NT_SERVER || + info.wProductType == VER_NT_DOMAIN_CONTROLLER) { + is_server = 1; } else { - for (i=0; win_version_table[i].major>0; ++i) { - if (win_version_table[i].major == info.dwMajorVersion && - win_version_table[i].minor == info.dwMinorVersion) { - plat = win_version_table[i].version; - break; + is_client = 1; + } +#endif + /* Search the version table for a matching version */ + for (i=0; win_version_table[i].major>0; ++i) { + if (win_version_table[i].major == info.dwMajorVersion && + win_version_table[i].minor == info.dwMinorVersion) { + if (is_server) { + plat = win_version_table[i].server_version; + } else { + /* Use client versions for clients, and when we don't know if it + * is a client or a server. */ + plat = win_version_table[i].client_version; } + break; } } if (plat) { strlcpy(uname_result, plat, sizeof(uname_result)); } else { - if (info.dwMajorVersion > 6 || - (info.dwMajorVersion==6 && info.dwMinorVersion>2)) + if (info.dwMajorVersion > win_version_table[0].major || + (info.dwMajorVersion == win_version_table[0].major && + info.dwMinorVersion > win_version_table[0].minor)) tor_snprintf(uname_result, sizeof(uname_result), "Very recent version of Windows [major=%d,minor=%d]", (int)info.dwMajorVersion,(int)info.dwMinorVersion); @@ -2741,12 +2761,25 @@ MOCK_IMPL(const char *, get_uname, (void)) "Unrecognized version of Windows [major=%d,minor=%d]", (int)info.dwMajorVersion,(int)info.dwMinorVersion); } -#ifdef VER_NT_SERVER - if (info.wProductType == VER_NT_SERVER || - info.wProductType == VER_NT_DOMAIN_CONTROLLER) { - strlcat(uname_result, " [server]", sizeof(uname_result)); - } -#endif + /* Now append extra information to the name. + * + * Microsoft's API documentation says that on Windows 8.1 and later, + * GetVersionEx returns Windows 8 (6.2) for applications without an + * app compatibility manifest (including tor's default build). + * + * But in our testing, we have seen the actual Windows version on + * Windows Server 2012 R2, even without a manifest. */ + if (info.dwMajorVersion > 6 || + (info.dwMajorVersion == 6 && info.dwMinorVersion >= 2)) { + /* When GetVersionEx() returns Windows 8, the actual OS may be any + * later version. */ + strlcat(uname_result, " [or later]", sizeof(uname_result)); + } + /* When we don't know if the OS is a client or server version, we use + * the client version, and this qualifier. */ + if (!is_server && !is_client) { + strlcat(uname_result, " [client or server]", sizeof(uname_result)); + } #else /* LCOV_EXCL_START -- can't provoke uname failure */ strlcpy(uname_result, "Unknown platform", sizeof(uname_result)); |