diff options
Diffstat (limited to 'compat/mingw.c')
-rw-r--r-- | compat/mingw.c | 232 |
1 files changed, 219 insertions, 13 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index bed417875..0d73f15fa 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -3,7 +3,7 @@ #include <conio.h> #include "../strbuf.h" -unsigned int _CRT_fmode = _O_BINARY; +#include <shellapi.h> static int err_win_to_posix(DWORD winerr) { @@ -123,13 +123,17 @@ int mingw_open (const char *filename, int oflags, ...) { va_list args; unsigned mode; + int fd; + va_start(args, oflags); mode = va_arg(args, int); va_end(args); if (!strcmp(filename, "/dev/null")) filename = "nul"; - int fd = open(filename, oflags, mode); + + fd = open(filename, oflags, mode); + if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { DWORD attrs = GetFileAttributes(filename); if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) @@ -580,10 +584,11 @@ static char **get_path_split(void) static void free_path_split(char **path) { + char **p = path; + if (!path) return; - char **p = path; while (*p) free(*p++); free(path); @@ -824,7 +829,7 @@ void mingw_execvp(const char *cmd, char *const *argv) free_path_split(path); } -char **copy_environ() +static char **copy_environ(void) { char **env; int i = 0; @@ -861,7 +866,7 @@ static int lookup_env(char **env, const char *name, size_t nmln) /* * If name contains '=', then sets the variable, otherwise it unsets it */ -char **env_setenv(char **env, const char *name) +static char **env_setenv(char **env, const char *name) { char *eq = strchrnul(name, '='); int i = lookup_env(env, name, eq-name); @@ -886,19 +891,207 @@ char **env_setenv(char **env, const char *name) return env; } -/* this is the first function to call into WS_32; initialize it */ -#undef gethostbyname -struct hostent *mingw_gethostbyname(const char *host) +/* + * Copies global environ and adjusts variables as specified by vars. + */ +char **make_augmented_environ(const char *const *vars) +{ + char **env = copy_environ(); + + while (*vars) + env = env_setenv(env, *vars++); + return env; +} + +/* + * Note, this isn't a complete replacement for getaddrinfo. It assumes + * that service contains a numerical port, or that it it is null. It + * does a simple search using gethostbyname, and returns one IPv4 host + * if one was found. + */ +static int WSAAPI getaddrinfo_stub(const char *node, const char *service, + const struct addrinfo *hints, + struct addrinfo **res) +{ + struct hostent *h = gethostbyname(node); + struct addrinfo *ai; + struct sockaddr_in *sin; + + if (!h) + return WSAGetLastError(); + + ai = xmalloc(sizeof(struct addrinfo)); + *res = ai; + ai->ai_flags = 0; + ai->ai_family = AF_INET; + ai->ai_socktype = hints->ai_socktype; + switch (hints->ai_socktype) { + case SOCK_STREAM: + ai->ai_protocol = IPPROTO_TCP; + break; + case SOCK_DGRAM: + ai->ai_protocol = IPPROTO_UDP; + break; + default: + ai->ai_protocol = 0; + break; + } + ai->ai_addrlen = sizeof(struct sockaddr_in); + ai->ai_canonname = strdup(h->h_name); + + sin = xmalloc(ai->ai_addrlen); + memset(sin, 0, ai->ai_addrlen); + sin->sin_family = AF_INET; + if (service) + sin->sin_port = htons(atoi(service)); + sin->sin_addr = *(struct in_addr *)h->h_addr; + ai->ai_addr = (struct sockaddr *)sin; + ai->ai_next = 0; + return 0; +} + +static void WSAAPI freeaddrinfo_stub(struct addrinfo *res) +{ + free(res->ai_canonname); + free(res->ai_addr); + free(res); +} + +static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen, + char *host, DWORD hostlen, + char *serv, DWORD servlen, int flags) +{ + const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; + if (sa->sa_family != AF_INET) + return EAI_FAMILY; + if (!host && !serv) + return EAI_NONAME; + + if (host && hostlen > 0) { + struct hostent *ent = NULL; + if (!(flags & NI_NUMERICHOST)) + ent = gethostbyaddr((const char *)&sin->sin_addr, + sizeof(sin->sin_addr), AF_INET); + + if (ent) + snprintf(host, hostlen, "%s", ent->h_name); + else if (flags & NI_NAMEREQD) + return EAI_NONAME; + else + snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); + } + + if (serv && servlen > 0) { + struct servent *ent = NULL; + if (!(flags & NI_NUMERICSERV)) + ent = getservbyport(sin->sin_port, + flags & NI_DGRAM ? "udp" : "tcp"); + + if (ent) + snprintf(serv, servlen, "%s", ent->s_name); + else + snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); + } + + return 0; +} + +static HMODULE ipv6_dll = NULL; +static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res); +static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service, + const struct addrinfo *hints, + struct addrinfo **res); +static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen, + char *host, DWORD hostlen, + char *serv, DWORD servlen, int flags); +/* + * gai_strerror is an inline function in the ws2tcpip.h header, so we + * don't need to try to load that one dynamically. + */ + +static void socket_cleanup(void) +{ + WSACleanup(); + if (ipv6_dll) + FreeLibrary(ipv6_dll); + ipv6_dll = NULL; + ipv6_freeaddrinfo = freeaddrinfo_stub; + ipv6_getaddrinfo = getaddrinfo_stub; + ipv6_getnameinfo = getnameinfo_stub; +} + +static void ensure_socket_initialization(void) { WSADATA wsa; + static int initialized = 0; + const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL }; + const char **name; + + if (initialized) + return; if (WSAStartup(MAKEWORD(2,2), &wsa)) die("unable to initialize winsock subsystem, error %d", WSAGetLastError()); - atexit((void(*)(void)) WSACleanup); + + for (name = libraries; *name; name++) { + ipv6_dll = LoadLibrary(*name); + if (!ipv6_dll) + continue; + + ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *)) + GetProcAddress(ipv6_dll, "freeaddrinfo"); + ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *, + const struct addrinfo *, + struct addrinfo **)) + GetProcAddress(ipv6_dll, "getaddrinfo"); + ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *, + socklen_t, char *, DWORD, + char *, DWORD, int)) + GetProcAddress(ipv6_dll, "getnameinfo"); + if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { + FreeLibrary(ipv6_dll); + ipv6_dll = NULL; + } else + break; + } + if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { + ipv6_freeaddrinfo = freeaddrinfo_stub; + ipv6_getaddrinfo = getaddrinfo_stub; + ipv6_getnameinfo = getnameinfo_stub; + } + + atexit(socket_cleanup); + initialized = 1; +} + +#undef gethostbyname +struct hostent *mingw_gethostbyname(const char *host) +{ + ensure_socket_initialization(); return gethostbyname(host); } +void mingw_freeaddrinfo(struct addrinfo *res) +{ + ipv6_freeaddrinfo(res); +} + +int mingw_getaddrinfo(const char *node, const char *service, + const struct addrinfo *hints, struct addrinfo **res) +{ + ensure_socket_initialization(); + return ipv6_getaddrinfo(node, service, hints, res); +} + +int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen, + char *host, DWORD hostlen, char *serv, DWORD servlen, + int flags) +{ + ensure_socket_initialization(); + return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); +} + int mingw_socket(int domain, int type, int protocol) { int sockfd; @@ -983,6 +1176,18 @@ repeat: return -1; } +/* + * Note that this doesn't return the actual pagesize, but + * the allocation granularity. If future Windows specific git code + * needs the real getpagesize function, we need to find another solution. + */ +int mingw_getpagesize(void) +{ + SYSTEM_INFO si; + GetSystemInfo(&si); + return si.dwAllocationGranularity; +} + struct passwd *getpwuid(int uid) { static char user_name[100]; @@ -1012,7 +1217,7 @@ static sig_handler_t timer_fn = SIG_DFL; * length to call the signal handler. */ -static __stdcall unsigned ticktack(void *dummy) +static unsigned __stdcall ticktack(void *dummy) { while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { if (timer_fn == SIG_DFL) @@ -1108,9 +1313,9 @@ int sigaction(int sig, struct sigaction *in, struct sigaction *out) #undef signal sig_handler_t mingw_signal(int sig, sig_handler_t handler) { + sig_handler_t old = timer_fn; if (sig != SIGALRM) return signal(sig, handler); - sig_handler_t old = timer_fn; timer_fn = handler; return old; } @@ -1139,7 +1344,7 @@ void mingw_open_html(const char *unixpath) int link(const char *oldpath, const char *newpath) { - typedef BOOL WINAPI (*T)(const char*, const char*, LPSECURITY_ATTRIBUTES); + typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES); static T create_hard_link = NULL; if (!create_hard_link) { create_hard_link = (T) GetProcAddress( @@ -1197,8 +1402,9 @@ struct dirent *mingw_readdir(DIR *dir) if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0) { + DWORD lasterr; handle = FindFirstFileA(dir->dd_name, &buf); - DWORD lasterr = GetLastError(); + lasterr = GetLastError(); dir->dd_handle = (long)handle; if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) { errno = err_win_to_posix(lasterr); |