diff options
Diffstat (limited to 'src/common/compat.c')
| -rw-r--r-- | src/common/compat.c | 250 |
1 files changed, 136 insertions, 114 deletions
diff --git a/src/common/compat.c b/src/common/compat.c index 4d110aba35..7fe97488e3 100644 --- a/src/common/compat.c +++ b/src/common/compat.c @@ -88,12 +88,12 @@ SecureZeroMemory(PVOID ptr, SIZE_T cnt) while (cnt--) *vcptr++ = 0; } -#endif +#endif /* defined(HAVE_DECL_SECUREZEROMEMORY) && !HAVE_DECL_SECUREZEROMEMORY */ #elif defined(HAVE_READPASSPHRASE_H) #include <readpassphrase.h> #else #include "tor_readpassphrase.h" -#endif +#endif /* defined(_WIN32) || ... */ /* Includes for the process attaching prevention */ #if defined(HAVE_SYS_PRCTL_H) && defined(__linux__) @@ -102,7 +102,7 @@ SecureZeroMemory(PVOID ptr, SIZE_T cnt) #elif defined(__APPLE__) #include <sys/types.h> #include <sys/ptrace.h> -#endif +#endif /* defined(HAVE_SYS_PRCTL_H) && defined(__linux__) || ... */ #ifdef HAVE_NETDB_H #include <netdb.h> @@ -161,7 +161,7 @@ tor_open_cloexec(const char *path, int flags, unsigned mode) * are running on one without. */ if (errno != EINVAL) return -1; -#endif +#endif /* defined(O_CLOEXEC) */ log_debug(LD_FS, "Opening %s with flags %x", p, flags); fd = open(p, flags, mode); @@ -173,7 +173,7 @@ tor_open_cloexec(const char *path, int flags, unsigned mode) return -1; } } -#endif +#endif /* defined(FD_CLOEXEC) */ return fd; } @@ -191,7 +191,7 @@ tor_fopen_cloexec(const char *path, const char *mode) return NULL; } } -#endif +#endif /* defined(FD_CLOEXEC) */ return result; } @@ -212,7 +212,8 @@ tor_rename(const char *path_old, const char *path_new) #define COMPAT_HAS_MMAN_AND_PAGESIZE #endif -#if defined(COMPAT_HAS_MMAN_AND_PAGESIZE) || defined(RUNNING_DOXYGEN) +#if defined(COMPAT_HAS_MMAN_AND_PAGESIZE) || \ + defined(RUNNING_DOXYGEN) /** Try to create a memory mapping for <b>filename</b> and return it. On * failure, return NULL. Sets errno properly, using ERANGE to mean * "empty file". */ @@ -450,7 +451,7 @@ tor_munmap_file(tor_mmap_t *handle) /* Can't fail in this mmap()/munmap()-free case */ return 0; } -#endif +#endif /* defined(COMPAT_HAS_MMAN_AND_PAGESIZE) || ... || ... */ /** Replacement for snprintf. Differs from platform snprintf in two * ways: First, always NUL-terminates its output. Second, always @@ -590,7 +591,7 @@ tor_vasprintf(char **strp, const char *fmt, va_list args) } *strp = strp_tmp; return len; -#endif +#endif /* defined(HAVE_VASPRINTF) || ... */ } /** Given <b>hlen</b> bytes at <b>haystack</b> and <b>nlen</b> bytes at @@ -636,7 +637,7 @@ tor_memmem(const void *_haystack, size_t hlen, } } return NULL; -#endif +#endif /* defined(HAVE_MEMMEM) && (!defined(__GNUC__) || __GNUC__ >= 2) */ } /** @@ -774,7 +775,7 @@ tor_fix_source_file(const char *fname) } return r; } -#endif +#endif /* defined(_WIN32) */ /** * Read a 16-bit value beginning at <b>cp</b>. Equivalent to @@ -868,7 +869,7 @@ replace_file(const char *from, const char *to) return -1; } return tor_rename(from,to); -#endif +#endif /* !defined(_WIN32) */ } /** Change <b>fname</b>'s modification time to now. */ @@ -954,7 +955,7 @@ tor_lockfile_lock(const char *filename, int blocking, int *locked_out) return NULL; } } -#endif +#endif /* defined(_WIN32) || ... */ result = tor_malloc(sizeof(tor_lockfile_t)); result->filename = tor_strdup(filename); @@ -982,7 +983,7 @@ tor_lockfile_unlock(tor_lockfile_t *lockfile) } #else /* Closing the lockfile is sufficient. */ -#endif +#endif /* defined(_WIN32) || ... */ close(lockfile->fd); lockfile->fd = -1; @@ -1030,9 +1031,9 @@ tor_fd_seekend(int fd) * no need to worry. */ if (rc < 0 && errno == ESPIPE) rc = 0; -#endif +#endif /* defined(ESPIPE) */ return (rc < 0) ? -1 : 0; -#endif +#endif /* defined(_WIN32) */ } /** Move <b>fd</b> to position <b>pos</b> in the file. Return -1 on error, 0 @@ -1071,7 +1072,7 @@ tor_ftruncate(int fd) static bitarray_t *open_sockets = NULL; /** The size of <b>open_sockets</b>, in bits. */ static int max_socket = -1; -#endif +#endif /* defined(DEBUG_SOCKET_COUNTING) */ /** Count of number of sockets currently open. (Undercounts sockets opened by * eventdns and libevent.) */ @@ -1141,7 +1142,7 @@ tor_close_socket,(tor_socket_t s)) tor_assert(open_sockets && s <= max_socket); bitarray_clear(open_sockets, s); } -#endif +#endif /* defined(DEBUG_SOCKET_COUNTING) */ if (r == 0) { --n_sockets_open; } else { @@ -1151,7 +1152,7 @@ tor_close_socket,(tor_socket_t s)) #else if (r != EBADF) --n_sockets_open; // LCOV_EXCL_LINE -- EIO and EINTR too hard to force. -#endif +#endif /* defined(_WIN32) */ r = -1; } @@ -1184,9 +1185,9 @@ mark_socket_open(tor_socket_t s) } bitarray_set(open_sockets, s); } -#else +#else /* !(defined(DEBUG_SOCKET_COUNTING)) */ #define mark_socket_open(s) STMT_NIL -#endif +#endif /* defined(DEBUG_SOCKET_COUNTING) */ /** @} */ /** As socket(), but counts the number of open sockets. */ @@ -1244,7 +1245,7 @@ tor_open_socket_with_extensions(int domain, int type, int protocol, * support, we are running on one without. */ if (errno != EINVAL) return s; -#endif /* SOCK_CLOEXEC && SOCK_NONBLOCK */ +#endif /* defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK) */ s = socket(domain, type, protocol); if (! SOCKET_OK(s)) @@ -1258,9 +1259,9 @@ tor_open_socket_with_extensions(int domain, int type, int protocol, return TOR_INVALID_SOCKET; } } -#else +#else /* !(defined(FD_CLOEXEC)) */ (void)cloexec; -#endif +#endif /* defined(FD_CLOEXEC) */ if (nonblock) { if (set_socket_nonblocking(s) == -1) { @@ -1316,7 +1317,8 @@ tor_accept_socket_with_extensions(tor_socket_t sockfd, struct sockaddr *addr, return TOR_INVALID_SOCKET; } -#if defined(HAVE_ACCEPT4) && defined(SOCK_CLOEXEC) && defined(SOCK_NONBLOCK) +#if defined(HAVE_ACCEPT4) && defined(SOCK_CLOEXEC) \ + && defined(SOCK_NONBLOCK) int ext_flags = (cloexec ? SOCK_CLOEXEC : 0) | (nonblock ? SOCK_NONBLOCK : 0); s = accept4(sockfd, addr, len, ext_flags); @@ -1328,7 +1330,7 @@ tor_accept_socket_with_extensions(tor_socket_t sockfd, struct sockaddr *addr, * we are missing SOCK_CLOEXEC/SOCK_NONBLOCK support. */ if (errno != EINVAL && errno != ENOSYS) return s; -#endif +#endif /* defined(HAVE_ACCEPT4) && defined(SOCK_CLOEXEC) ... */ s = accept(sockfd, addr, len); if (!SOCKET_OK(s)) @@ -1342,9 +1344,9 @@ tor_accept_socket_with_extensions(tor_socket_t sockfd, struct sockaddr *addr, return TOR_INVALID_SOCKET; } } -#else +#else /* !(defined(FD_CLOEXEC)) */ (void)cloexec; -#endif +#endif /* defined(FD_CLOEXEC) */ if (nonblock) { if (set_socket_nonblocking(s) == -1) { @@ -1404,7 +1406,7 @@ set_socket_nonblocking(tor_socket_t sock) log_warn(LD_NET, "Couldn't set file status flags: %s", strerror(errno)); return -1; } -#endif +#endif /* defined(_WIN32) */ return 0; } @@ -1442,7 +1444,7 @@ tor_socketpair(int family, int type, int protocol, tor_socket_t fd[2]) * are running on one without. */ if (errno != EINVAL) return -errno; -#endif +#endif /* defined(SOCK_CLOEXEC) */ r = socketpair(family, type, protocol, fd); if (r < 0) @@ -1465,7 +1467,7 @@ tor_socketpair(int family, int type, int protocol, tor_socket_t fd[2]) return -errno; } } -#endif +#endif /* defined(FD_CLOEXEC) */ goto sockets_ok; /* So that sockets_ok will not be unused. */ sockets_ok: @@ -1481,9 +1483,9 @@ tor_socketpair(int family, int type, int protocol, tor_socket_t fd[2]) socket_accounting_unlock(); return 0; -#else +#else /* !(defined(HAVE_SOCKETPAIR) && !defined(_WIN32)) */ return tor_ersatz_socketpair(family, type, protocol, fd); -#endif +#endif /* defined(HAVE_SOCKETPAIR) && !defined(_WIN32) */ } #ifdef NEED_ERSATZ_SOCKETPAIR @@ -1640,7 +1642,7 @@ tor_ersatz_socketpair(int family, int type, int protocol, tor_socket_t fd[2]) #undef SIZEOF_SOCKADDR -#endif +#endif /* defined(NEED_ERSATZ_SOCKETPAIR) */ /* Return the maximum number of allowed sockets. */ int @@ -1694,7 +1696,7 @@ set_max_file_descriptors(rlim_t limit, int *max_out) #else const char *platform = "unknown platforms with no getrlimit()"; const unsigned long MAX_CONNECTIONS = 15000; -#endif +#endif /* defined(CYGWIN) || defined(__CYGWIN__) || ... */ log_fn(LOG_INFO, LD_NET, "This platform is missing getrlimit(). Proceeding."); if (limit > MAX_CONNECTIONS) { @@ -1705,7 +1707,7 @@ set_max_file_descriptors(rlim_t limit, int *max_out) return -1; } limit = MAX_CONNECTIONS; -#else /* HAVE_GETRLIMIT */ +#else /* !(!defined(HAVE_GETRLIMIT)) */ struct rlimit rlim; if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) { @@ -1754,7 +1756,7 @@ set_max_file_descriptors(rlim_t limit, int *max_out) bad = 0; } } -#endif /* OPEN_MAX */ +#endif /* defined(OPEN_MAX) */ if (bad) { log_warn(LD_CONFIG,"Couldn't set maximum number of file descriptors: %s", strerror(errno)); @@ -1763,7 +1765,7 @@ set_max_file_descriptors(rlim_t limit, int *max_out) } /* leave some overhead for logs, etc, */ limit = rlim.rlim_cur; -#endif /* HAVE_GETRLIMIT */ +#endif /* !defined(HAVE_GETRLIMIT) */ if (limit > INT_MAX) limit = INT_MAX; @@ -1801,7 +1803,7 @@ log_credential_status(void) "UID is %u (real), %u (effective), %u (saved)", (unsigned)ruid, (unsigned)euid, (unsigned)suid); } -#else +#else /* !(defined(HAVE_GETRESUID)) */ /* getresuid is not present on MacOS X, so we can't get the saved (E)UID */ ruid = getuid(); euid = geteuid(); @@ -1810,7 +1812,7 @@ log_credential_status(void) log_fn(CREDENTIAL_LOG_LEVEL, LD_GENERAL, "UID is %u (real), %u (effective), unknown (saved)", (unsigned)ruid, (unsigned)euid); -#endif +#endif /* defined(HAVE_GETRESUID) */ /* log GIDs */ #ifdef HAVE_GETRESGID @@ -1822,7 +1824,7 @@ log_credential_status(void) "GID is %u (real), %u (effective), %u (saved)", (unsigned)rgid, (unsigned)egid, (unsigned)sgid); } -#else +#else /* !(defined(HAVE_GETRESGID)) */ /* getresgid is not present on MacOS X, so we can't get the saved (E)GID */ rgid = getgid(); egid = getegid(); @@ -1830,7 +1832,7 @@ log_credential_status(void) log_fn(CREDENTIAL_LOG_LEVEL, LD_GENERAL, "GID is %u (real), %u (effective), unknown (saved)", (unsigned)rgid, (unsigned)egid); -#endif +#endif /* defined(HAVE_GETRESGID) */ /* log supplementary groups */ sup_gids_size = 64; @@ -1870,7 +1872,7 @@ log_credential_status(void) return 0; } -#endif +#endif /* !defined(_WIN32) */ #ifndef _WIN32 /** Cached struct from the last getpwname() call we did successfully. */ @@ -1970,7 +1972,7 @@ tor_getpwuid(uid_t uid) return NULL; } -#endif +#endif /* !defined(_WIN32) */ /** Return true iff we were compiled with capability support, and capabilities * seem to work. **/ @@ -1983,9 +1985,9 @@ have_capability_support(void) return 0; cap_free(caps); return 1; -#else +#else /* !(defined(HAVE_LINUX_CAPABILITIES)) */ return 0; -#endif +#endif /* defined(HAVE_LINUX_CAPABILITIES) */ } #ifdef HAVE_LINUX_CAPABILITIES @@ -2044,7 +2046,7 @@ drop_capabilities(int pre_setuid) return 0; } -#endif +#endif /* defined(HAVE_LINUX_CAPABILITIES) */ /** Call setuid and setgid to run as <b>user</b> and switch to their * primary group. Return 0 on success. On failure, log and return -1. @@ -2094,13 +2096,13 @@ switch_id(const char *user, const unsigned flags) if (drop_capabilities(1)) return -1; } -#else +#else /* !(defined(HAVE_LINUX_CAPABILITIES)) */ (void) keep_bindlow; if (warn_if_no_caps) { log_warn(LD_CONFIG, "KeepBindCapabilities set, but no capability support " "on this system."); } -#endif +#endif /* defined(HAVE_LINUX_CAPABILITIES) */ /* Properly switch egid,gid,euid,uid here or bail out */ if (setgroups(1, &pw->pw_gid)) { @@ -2160,7 +2162,7 @@ switch_id(const char *user, const unsigned flags) if (drop_capabilities(0)) return -1; } -#endif +#endif /* defined(HAVE_LINUX_CAPABILITIES) */ #if !defined(CYGWIN) && !defined(__CYGWIN__) /* If we tried to drop privilege to a group/user other than root, attempt to @@ -2184,7 +2186,7 @@ switch_id(const char *user, const unsigned flags) return -1; } } -#endif +#endif /* !defined(CYGWIN) && !defined(__CYGWIN__) */ /* Check what really happened */ if (log_credential_status()) { @@ -2193,8 +2195,8 @@ switch_id(const char *user, const unsigned flags) have_already_switched_id = 1; /* mark success so we never try again */ -#if defined(__linux__) && defined(HAVE_SYS_PRCTL_H) && defined(HAVE_PRCTL) -#ifdef PR_SET_DUMPABLE +#if defined(__linux__) && defined(HAVE_SYS_PRCTL_H) && \ + defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE) if (pw->pw_uid) { /* Re-enable core dumps if we're not running as root. */ log_info(LD_CONFIG, "Re-enabling coredumps"); @@ -2202,17 +2204,16 @@ switch_id(const char *user, const unsigned flags) log_warn(LD_CONFIG, "Unable to re-enable coredumps: %s",strerror(errno)); } } -#endif -#endif +#endif /* defined(__linux__) && defined(HAVE_SYS_PRCTL_H) && ... */ return 0; -#else +#else /* !(!defined(_WIN32)) */ (void)user; (void)flags; log_warn(LD_CONFIG, "Switching users is unsupported on your OS."); return -1; -#endif +#endif /* !defined(_WIN32) */ } /* We only use the linux prctl for now. There is no Win32 support; this may @@ -2235,35 +2236,32 @@ switch_id(const char *user, const unsigned flags) int tor_disable_debugger_attach(void) { - int r, attempted; - r = -1; - attempted = 0; + int r = -1; log_debug(LD_CONFIG, "Attemping to disable debugger attachment to Tor for " "unprivileged users."); -#if defined(__linux__) && defined(HAVE_SYS_PRCTL_H) && defined(HAVE_PRCTL) -#ifdef PR_SET_DUMPABLE - attempted = 1; +#if defined(__linux__) && defined(HAVE_SYS_PRCTL_H) \ + && defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE) +#define TRIED_TO_DISABLE r = prctl(PR_SET_DUMPABLE, 0); -#endif -#endif -#if defined(__APPLE__) && defined(PT_DENY_ATTACH) - if (r < 0) { - attempted = 1; - r = ptrace(PT_DENY_ATTACH, 0, 0, 0); - } -#endif +#elif defined(__APPLE__) && defined(PT_DENY_ATTACH) +#define TRIED_TO_ATTACH + r = ptrace(PT_DENY_ATTACH, 0, 0, 0); +#endif /* defined(__linux__) && defined(HAVE_SYS_PRCTL_H) ... || ... */ // XXX: TODO - Mac OS X has dtrace and this may be disabled. // XXX: TODO - Windows probably has something similar - if (r == 0 && attempted) { +#ifdef TRIED_TO_DISABLE + if (r == 0) { log_debug(LD_CONFIG,"Debugger attachment disabled for " "unprivileged users."); return 1; - } else if (attempted) { + } else { log_warn(LD_CONFIG, "Unable to disable debugger attaching: %s", strerror(errno)); } +#endif /* defined(TRIED_TO_DISABLE) */ +#undef TRIED_TO_DISABLE return r; } @@ -2282,7 +2280,7 @@ get_user_homedir(const char *username) } return tor_strdup(pw->pw_dir); } -#endif +#endif /* defined(HAVE_PWD_H) */ /** Modify <b>fname</b> to contain the name of its parent directory. Doesn't * actually examine the filesystem; does a purely syntactic modification. @@ -2310,7 +2308,7 @@ get_parent_directory(char *fname) if (fname[0] && fname[1] == ':') { fname += 2; } -#endif +#endif /* defined(_WIN32) */ /* Now we want to remove all path-separators at the end of the string, * and to remove the end of the string starting with the path separator * before the last non-path-separator. In perl, this would be @@ -2349,17 +2347,36 @@ get_parent_directory(char *fname) static char * alloc_getcwd(void) { -#ifdef PATH_MAX -#define MAX_CWD PATH_MAX -#else -#define MAX_CWD 4096 -#endif +#ifdef HAVE_GET_CURRENT_DIR_NAME + /* Glibc makes this nice and simple for us. */ + char *cwd = get_current_dir_name(); + char *result = NULL; + if (cwd) { + /* We make a copy here, in case tor_malloc() is not malloc(). */ + result = tor_strdup(cwd); + raw_free(cwd); // alias for free to avoid tripping check-spaces. + } + return result; +#else /* !(defined(HAVE_GET_CURRENT_DIR_NAME)) */ + size_t size = 1024; + char *buf = NULL; + char *ptr = NULL; + + while (ptr == NULL) { + buf = tor_realloc(buf, size); + ptr = getcwd(buf, size); - char path_buf[MAX_CWD]; - char *path = getcwd(path_buf, sizeof(path_buf)); - return path ? tor_strdup(path) : NULL; + if (ptr == NULL && errno != ERANGE) { + tor_free(buf); + return NULL; + } + + size *= 2; + } + return buf; +#endif /* defined(HAVE_GET_CURRENT_DIR_NAME) */ } -#endif +#endif /* !defined(_WIN32) */ /** Expand possibly relative path <b>fname</b> to an absolute path. * Return a newly allocated string, possibly equal to <b>fname</b>. */ @@ -2375,7 +2392,7 @@ make_path_absolute(char *fname) if (absfname_malloced) raw_free(absfname_malloced); return absfname; -#else +#else /* !(defined(_WIN32)) */ char *absfname = NULL, *path = NULL; tor_assert(fname); @@ -2398,7 +2415,7 @@ make_path_absolute(char *fname) } } return absfname; -#endif +#endif /* defined(_WIN32) */ } #ifndef HAVE__NSGETENVIRON @@ -2407,8 +2424,8 @@ make_path_absolute(char *fname) #ifndef RUNNING_DOXYGEN extern char **environ; #endif -#endif -#endif +#endif /* !defined(HAVE_EXTERN_ENVIRON_DECLARED) */ +#endif /* !defined(HAVE__NSGETENVIRON) */ /** Return the current environment. This is a portable replacement for * 'environ'. */ @@ -2420,9 +2437,9 @@ get_environment(void) * when we do a mostly-static build on OSX 10.7, the resulting binary won't * work on OSX 10.6. */ return *_NSGetEnviron(); -#else +#else /* !(defined(HAVE__NSGETENVIRON)) */ return environ; -#endif +#endif /* defined(HAVE__NSGETENVIRON) */ } /** Get name of current host and write it to <b>name</b> array, whose @@ -2563,6 +2580,7 @@ tor_inet_pton(int af, const char *src, void *dst) int gapPos = -1, i, setWords=0; const char *dot = strchr(src, '.'); const char *eow; /* end of words. */ + memset(words, 0xf8, sizeof(words)); if (dot == src) return 0; else if (!dot) @@ -2600,7 +2618,7 @@ tor_inet_pton(int af, const char *src, void *dst) long r = strtol(src, &next, 16); if (next == NULL || next == src) { /* The 'next == src' error case can happen on versions of openbsd - * where treats "0xfoo" as an error, rather than as "0" followed by + * which treat "0xfoo" as an error, rather than as "0" followed by * "xfoo". */ return 0; } @@ -2699,7 +2717,7 @@ get_uname,(void)) /* (Linux says 0 is success, Solaris says 1 is success) */ strlcpy(uname_result, u.sysname, sizeof(uname_result)); } else -#endif +#endif /* defined(HAVE_UNAME) */ { #ifdef _WIN32 OSVERSIONINFOEX info; @@ -2761,12 +2779,12 @@ get_uname,(void)) info.wProductType == VER_NT_DOMAIN_CONTROLLER) { strlcat(uname_result, " [server]", sizeof(uname_result)); } -#endif -#else +#endif /* defined(VER_NT_SERVER) */ +#else /* !(defined(_WIN32)) */ /* LCOV_EXCL_START -- can't provoke uname failure */ strlcpy(uname_result, "Unknown platform", sizeof(uname_result)); /* LCOV_EXCL_STOP */ -#endif +#endif /* defined(_WIN32) */ } uname_result_is_set = 1; } @@ -2822,7 +2840,7 @@ compute_num_cpus_impl(void) return -1; #else return -1; -#endif +#endif /* defined(_WIN32) || ... */ } #define MAX_DETECTABLE_CPUS 16 @@ -2985,7 +3003,7 @@ tor_localtime_r(const time_t *timep, struct tm *result) memcpy(result, r, sizeof(struct tm)); return correct_tm(1, timep, result, r); } -#endif +#endif /* defined(HAVE_LOCALTIME_R) || ... */ /** @} */ /** @{ */ @@ -3028,9 +3046,13 @@ tor_gmtime_r(const time_t *timep, struct tm *result) memcpy(result, r, sizeof(struct tm)); return correct_tm(0, timep, result, r); } -#endif +#endif /* defined(HAVE_GMTIME_R) || ... */ #if defined(HAVE_MLOCKALL) && HAVE_DECL_MLOCKALL && defined(RLIMIT_MEMLOCK) +#define HAVE_UNIX_MLOCKALL +#endif + +#ifdef HAVE_UNIX_MLOCKALL /** Attempt to raise the current and max rlimit to infinity for our process. * This only needs to be done once and can probably only be done when we have * not already dropped privileges. @@ -3061,7 +3083,7 @@ tor_set_max_memlock(void) return 0; } -#endif +#endif /* defined(HAVE_UNIX_MLOCKALL) */ /** Attempt to lock all current and all future memory pages. * This should only be called once and while we're privileged. @@ -3086,7 +3108,7 @@ tor_mlockall(void) * http://msdn.microsoft.com/en-us/library/aa366895(VS.85).aspx */ -#if defined(HAVE_MLOCKALL) && HAVE_DECL_MLOCKALL && defined(RLIMIT_MEMLOCK) +#ifdef HAVE_UNIX_MLOCKALL if (tor_set_max_memlock() == 0) { log_debug(LD_GENERAL, "RLIMIT_MEMLOCK is now set to RLIM_INFINITY."); } @@ -3107,10 +3129,10 @@ tor_mlockall(void) "pages: %s", strerror(errno)); return -1; } -#else +#else /* !(defined(HAVE_UNIX_MLOCKALL)) */ log_warn(LD_GENERAL, "Unable to lock memory pages. mlockall() unsupported?"); return -1; -#endif +#endif /* defined(HAVE_UNIX_MLOCKALL) */ } /** @@ -3138,7 +3160,7 @@ tor_socket_errno(tor_socket_t sock) } return err; } -#endif +#endif /* defined(_WIN32) */ #if defined(_WIN32) #define E(code, s) { code, (s " [" #code " ]") } @@ -3214,7 +3236,7 @@ tor_socket_strerror(int e) } return strerror(e); } -#endif +#endif /* defined(_WIN32) */ /** Called before we make any calls to network-related functions. * (Some operating systems require their network libraries to be @@ -3240,7 +3262,7 @@ network_init(void) /* WSAData.iMaxSockets might show the max sockets we're allowed to use. * We might use it to complain if we're trying to be a server but have * too few sockets available. */ -#endif +#endif /* defined(_WIN32) */ return 0; } @@ -3276,9 +3298,9 @@ format_win32_error(DWORD err) result = tor_malloc(len); wcstombs(result,str,len); result[len-1] = '\0'; -#else +#else /* !(defined(UNICODE)) */ result = tor_strdup(str); -#endif +#endif /* defined(UNICODE) */ } else { result = tor_strdup("<unformattable error>"); } @@ -3287,7 +3309,7 @@ format_win32_error(DWORD err) } return result; } -#endif +#endif /* defined(_WIN32) */ #if defined(HW_PHYSMEM64) /* This appears to be an OpenBSD thing */ @@ -3295,7 +3317,7 @@ format_win32_error(DWORD err) #elif defined(HW_MEMSIZE) /* OSX defines this one */ #define INT64_HW_MEM HW_MEMSIZE -#endif +#endif /* defined(HW_PHYSMEM64) || ... */ /** * Helper: try to detect the total system memory, and return it. On failure, @@ -3328,8 +3350,8 @@ get_total_system_memory_impl(void) tor_free(s); return result * 1024; - err: /* LCOV_EXCL_START Can't reach this unless proc is broken. */ + err: tor_free(s); close(fd); return 0; @@ -3369,7 +3391,7 @@ get_total_system_memory_impl(void) #else /* I have no clue. */ return 0; -#endif +#endif /* defined(__linux__) || ... */ } /** @@ -3402,7 +3424,7 @@ get_total_system_memory(size_t *mem_out) * size_t. */ m = SIZE_MAX; } -#endif +#endif /* SIZE_MAX != UINT64_MAX */ *mem_out = mem_cached = (size_t) m; @@ -3483,7 +3505,7 @@ tor_getpass(const char *prompt, char *output, size_t buflen) return r; #else #error "No implementation for tor_getpass found!" -#endif +#endif /* defined(HAVE_READPASSPHRASE) || ... */ } /** Return the amount of free disk space we have permission to use, in @@ -3523,6 +3545,6 @@ tor_get_avail_disk_space(const char *path) (void)path; errno = ENOSYS; return -1; -#endif +#endif /* defined(HAVE_STATVFS) || ... */ } |