mirror of
https://github.com/genodelabs/genode.git
synced 2025-04-09 04:15:52 +00:00
libc: refactor socket operations
This commit is contained in:
Christian Helmuth
parent
47609dda40
commit
32da844f01
@ -14,7 +14,7 @@ SRC_CC = atexit.cc dummies.cc rlimit.cc sysctl.cc \
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gettimeofday.cc malloc.cc progname.cc fd_alloc.cc file_operations.cc \
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plugin.cc plugin_registry.cc select.cc exit.cc environ.cc nanosleep.cc \
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libc_mem_alloc.cc pread_pwrite.cc readv_writev.cc poll.cc \
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libc_pdbg.cc vfs_plugin.cc rtc.cc dynamic_linker.cc
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libc_pdbg.cc vfs_plugin.cc rtc.cc dynamic_linker.cc socket_operations.cc
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INC_DIR += $(REP_DIR)/src/lib/libc
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@ -13,13 +13,11 @@
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*/
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/* Genode includes */
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#include <base/printf.h>
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#include <base/env.h>
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#include <os/path.h>
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#include <util/token.h>
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/* Genode-specific libc interfaces */
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#include <libc-plugin/fd_alloc.h>
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#include <libc-plugin/plugin_registry.h>
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#include <libc-plugin/plugin.h>
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@ -33,6 +31,7 @@
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#include <unistd.h>
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/* libc-internal includes */
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#include "libc_file.h"
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#include "libc_mem_alloc.h"
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#include "libc_mmap_registry.h"
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@ -48,9 +47,6 @@ static bool const verbose = false;
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#define PDBGV(...) if (verbose) PDBG(__VA_ARGS__)
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enum { INVALID_FD = -1 };
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Libc::Mmap_registry *Libc::mmap_registry()
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{
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static Libc::Mmap_registry registry;
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@ -62,54 +58,6 @@ Libc::Mmap_registry *Libc::mmap_registry()
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** Utilities **
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***************/
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/**
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* Find plugin responsible for the specified libc file descriptor
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*
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* \param func_name function name of the caller for printing an error message
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*/
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inline File_descriptor *libc_fd_to_fd(int libc_fd, const char *func_name)
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{
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File_descriptor *fd = file_descriptor_allocator()->find_by_libc_fd(libc_fd);
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if (!fd)
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PERR("no plugin found for %s(%d)", func_name, libc_fd);
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return fd;
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}
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/**
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* Generate body of wrapper function taking a file descriptor as first argument
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*/
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#define FD_FUNC_WRAPPER_GENERIC(result_stm, result_err_val, func_name, libc_fd, ...) \
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{ \
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File_descriptor *fd = libc_fd_to_fd(libc_fd, #func_name); \
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if (!fd || !fd->plugin) { \
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errno = EBADF; \
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result_stm result_err_val; \
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} else \
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result_stm fd->plugin->func_name(fd, ##__VA_ARGS__ ); \
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}
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#define FD_FUNC_WRAPPER(func_name, libc_fd, ...) \
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FD_FUNC_WRAPPER_GENERIC(return, INVALID_FD, func_name, libc_fd, ##__VA_ARGS__ )
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/**
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* Generate body of wrapper function taking a path name as first argument
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*/
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#define FNAME_FUNC_WRAPPER_GENERIC(result_stm, func_name, path, ...) \
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{ \
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Plugin *plugin = plugin_registry()->get_plugin_for_##func_name(path, ##__VA_ARGS__); \
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if (!plugin) { \
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PERR("no plugin found for %s(\"%s\")", #func_name, path); \
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errno = ENOSYS; \
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result_stm -1; \
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} else \
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result_stm plugin->func_name(path, ##__VA_ARGS__); \
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}
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#define FNAME_FUNC_WRAPPER(func_name, path, ...) \
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FNAME_FUNC_WRAPPER_GENERIC(return, func_name, path, ##__VA_ARGS__ )
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/**
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* Current working directory
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*/
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@ -266,32 +214,6 @@ static void resolve_symlinks_except_last_element(char const *path, Absolute_path
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** Libc functions **
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********************/
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extern "C" int _accept(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
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{
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return accept(libc_fd, addr, addrlen);
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}
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extern "C" int accept(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
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{
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File_descriptor *ret_fd;
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FD_FUNC_WRAPPER_GENERIC(ret_fd =, 0, accept, libc_fd, addr, addrlen);
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return ret_fd ? ret_fd->libc_fd : INVALID_FD;
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}
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extern "C" int _bind(int libc_fd, const struct sockaddr *addr,
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socklen_t addrlen)
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{
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return bind(libc_fd, addr, addrlen);
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}
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extern "C" int bind(int libc_fd, const struct sockaddr *addr,
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socklen_t addrlen) {
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FD_FUNC_WRAPPER(bind, libc_fd, addr, addrlen); }
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extern "C" int chdir(const char *path)
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{
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struct stat stat_buf;
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@ -312,18 +234,6 @@ extern "C" int _close(int libc_fd) {
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extern "C" int close(int libc_fd) { return _close(libc_fd); }
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extern "C" int connect(int libc_fd, const struct sockaddr *addr,
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socklen_t addrlen) {
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FD_FUNC_WRAPPER(connect, libc_fd, addr, addrlen); }
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extern "C" int _connect(int libc_fd, const struct sockaddr *addr,
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socklen_t addrlen)
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{
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return connect(libc_fd, addr, addrlen);
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}
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extern "C" int _dup(int libc_fd)
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{
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File_descriptor *ret_fd;
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@ -418,21 +328,6 @@ extern "C" int _fcntl(int libc_fd, int cmd, long arg) {
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return fcntl(libc_fd, cmd, arg); }
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extern "C" void freeaddrinfo(struct addrinfo *res)
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{
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Plugin *plugin;
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plugin = plugin_registry()->get_plugin_for_freeaddrinfo(res);
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if (!plugin) {
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PERR("no plugin found for freeaddrinfo()");
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return;
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}
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plugin->freeaddrinfo(res);
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}
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extern "C" int _fstat(int libc_fd, struct stat *buf) {
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FD_FUNC_WRAPPER(fstat, libc_fd, buf); }
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@ -455,48 +350,11 @@ extern "C" int ftruncate(int libc_fd, ::off_t length) {
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FD_FUNC_WRAPPER(ftruncate, libc_fd, length); }
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extern "C" int getaddrinfo(const char *node, const char *service,
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const struct addrinfo *hints,
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struct addrinfo **res)
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{
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Plugin *plugin;
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plugin = plugin_registry()->get_plugin_for_getaddrinfo(node, service, hints, res);
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if (!plugin) {
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PERR("no plugin found for getaddrinfo()");
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return -1;
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}
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return plugin->getaddrinfo(node, service, hints, res);
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}
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extern "C" ssize_t _getdirentries(int libc_fd, char *buf, ::size_t nbytes, ::off_t *basep) {
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FD_FUNC_WRAPPER(getdirentries, libc_fd, buf, nbytes, basep); }
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extern "C" int _getpeername(int libc_fd, struct sockaddr *addr, socklen_t *addrlen) {
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FD_FUNC_WRAPPER(getpeername, libc_fd, addr, addrlen); }
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extern "C" int getpeername(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
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{
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return _getpeername(libc_fd, addr, addrlen);
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}
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extern "C" int _getsockname(int libc_fd, struct sockaddr *addr, socklen_t *addrlen) {
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FD_FUNC_WRAPPER(getsockname, libc_fd, addr, addrlen); }
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extern "C" int getsockname(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
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{
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return _getsockname(libc_fd, addr, addrlen);
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}
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extern "C" int ioctl(int libc_fd, int request, char *argp) {
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FD_FUNC_WRAPPER(ioctl, libc_fd, request, argp); }
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@ -505,16 +363,6 @@ extern "C" int _ioctl(int libc_fd, int request, char *argp) {
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FD_FUNC_WRAPPER(ioctl, libc_fd, request, argp); }
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extern "C" int _listen(int libc_fd, int backlog)
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{
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return listen(libc_fd, backlog);
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}
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extern "C" int listen(int libc_fd, int backlog) {
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FD_FUNC_WRAPPER(listen, libc_fd, backlog); }
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extern "C" ::off_t lseek(int libc_fd, ::off_t offset, int whence) {
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FD_FUNC_WRAPPER(lseek, libc_fd, offset, whence); }
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@ -698,26 +546,6 @@ extern "C" ssize_t readlink(const char *path, char *buf, size_t bufsiz)
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}
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extern "C" ssize_t recv(int libc_fd, void *buf, ::size_t len, int flags) {
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FD_FUNC_WRAPPER(recv, libc_fd, buf, len, flags); }
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extern "C" ssize_t _recvfrom(int libc_fd, void *buf, ::size_t len, int flags,
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struct sockaddr *src_addr, socklen_t *addrlen) {
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FD_FUNC_WRAPPER(recvfrom, libc_fd, buf, len, flags, src_addr, addrlen); }
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extern "C" ssize_t recvfrom(int libc_fd, void *buf, ::size_t len, int flags,
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struct sockaddr *src_addr, socklen_t *addrlen)
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{
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return _recvfrom(libc_fd, buf, len, flags, src_addr, addrlen);
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}
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extern "C" ssize_t recvmsg(int libc_fd, struct msghdr *msg, int flags) {
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FD_FUNC_WRAPPER(recvmsg, libc_fd, msg, flags); }
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extern "C" int rename(const char *oldpath, const char *newpath)
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{
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try {
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@ -743,77 +571,6 @@ extern "C" int rmdir(const char *path)
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}
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extern "C" ssize_t send(int libc_fd, const void *buf, ::size_t len, int flags) {
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FD_FUNC_WRAPPER(send, libc_fd, buf, len, flags); }
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extern "C" ssize_t _sendto(int libc_fd, const void *buf, ::size_t len, int flags,
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const struct sockaddr *dest_addr, socklen_t addrlen) {
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FD_FUNC_WRAPPER(sendto, libc_fd, buf, len, flags, dest_addr, addrlen); }
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extern "C" ssize_t sendto(int libc_fd, const void *buf, ::size_t len, int flags,
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const struct sockaddr *dest_addr, socklen_t addrlen)
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{
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return _sendto(libc_fd, buf, len, flags, dest_addr, addrlen);
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}
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extern "C" int _getsockopt(int libc_fd, int level, int optname,
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void *optval, socklen_t *optlen)
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{
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return getsockopt(libc_fd, level, optname, optval, optlen);
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}
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extern "C" int getsockopt(int libc_fd, int level, int optname,
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void *optval, socklen_t *optlen) {
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FD_FUNC_WRAPPER(getsockopt, libc_fd, level, optname, optval, optlen); }
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extern "C" int _setsockopt(int libc_fd, int level, int optname,
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const void *optval, socklen_t optlen) {
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FD_FUNC_WRAPPER(setsockopt, libc_fd, level, optname, optval, optlen); }
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extern "C" int setsockopt(int libc_fd, int level, int optname,
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const void *optval, socklen_t optlen)
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{
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return _setsockopt(libc_fd, level, optname, optval, optlen);
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}
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extern "C" int shutdown(int libc_fd, int how) {
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FD_FUNC_WRAPPER(shutdown, libc_fd, how); }
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extern "C" int socket(int domain, int type, int protocol)
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{
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Plugin *plugin;
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File_descriptor *new_fdo;
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plugin = plugin_registry()->get_plugin_for_socket(domain, type, protocol);
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if (!plugin) {
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PERR("no plugin found for socket()");
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return -1;
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}
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new_fdo = plugin->socket(domain, type, protocol);
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if (!new_fdo) {
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PERR("plugin()->socket() failed");
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return -1;
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}
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return new_fdo->libc_fd;
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}
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extern "C" int _socket(int domain, int type, int protocol)
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{
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return socket(domain, type, protocol);
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}
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extern "C" int stat(const char *path, struct stat *buf)
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{
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PDBGV("path = %s", path);
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76
repos/libports/src/lib/libc/libc_file.h
Normal file
76
repos/libports/src/lib/libc/libc_file.h
Normal file
@ -0,0 +1,76 @@
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/*
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* \brief File-operation utilities
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* \author Christian Helmuth
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* \date 2015-06-30
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*/
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/*
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* Copyright (C) 2015 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _LIBC_FILE_H_
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#define _LIBC_FILE_H_
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/* Genode includes */
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#include <base/printf.h>
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/* Genode-specific libc interfaces */
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#include <libc-plugin/fd_alloc.h>
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#include <libc-plugin/plugin_registry.h>
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enum { INVALID_FD = -1 };
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/**
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* Find plugin responsible for the specified libc file descriptor
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*
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* \param func_name function name of the caller for printing an error message
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*/
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static inline Libc::File_descriptor *libc_fd_to_fd(int libc_fd, const char *func_name)
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{
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Libc::File_descriptor *fd =
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Libc::file_descriptor_allocator()->find_by_libc_fd(libc_fd);
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if (!fd)
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PERR("no plugin found for %s(%d)", func_name, libc_fd);
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return fd;
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}
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/**
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* Generate body of wrapper function taking a file descriptor as first argument
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*/
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#define FD_FUNC_WRAPPER_GENERIC(result_stm, result_err_val, func_name, libc_fd, ...) \
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{ \
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File_descriptor *fd = libc_fd_to_fd(libc_fd, #func_name); \
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if (!fd || !fd->plugin) { \
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errno = EBADF; \
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result_stm result_err_val; \
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} else \
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result_stm fd->plugin->func_name(fd, ##__VA_ARGS__ ); \
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}
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||||
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#define FD_FUNC_WRAPPER(func_name, libc_fd, ...) \
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FD_FUNC_WRAPPER_GENERIC(return, INVALID_FD, func_name, libc_fd, ##__VA_ARGS__ )
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||||
/**
|
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* Generate body of wrapper function taking a path name as first argument
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||||
*/
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||||
#define FNAME_FUNC_WRAPPER_GENERIC(result_stm, func_name, path, ...) \
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||||
{ \
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Plugin *plugin = plugin_registry()->get_plugin_for_##func_name(path, ##__VA_ARGS__); \
|
||||
if (!plugin) { \
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PERR("no plugin found for %s(\"%s\")", #func_name, path); \
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||||
errno = ENOSYS; \
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||||
result_stm -1; \
|
||||
} else \
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||||
result_stm plugin->func_name(path, ##__VA_ARGS__); \
|
||||
}
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||||
|
||||
#define FNAME_FUNC_WRAPPER(func_name, path, ...) \
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FNAME_FUNC_WRAPPER_GENERIC(return, func_name, path, ##__VA_ARGS__ )
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||||
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||||
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||||
#endif /* _LIBC_FILE_H_ */
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||||
230
repos/libports/src/lib/libc/socket_operations.cc
Normal file
230
repos/libports/src/lib/libc/socket_operations.cc
Normal file
@ -0,0 +1,230 @@
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/*
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* \brief libc socket operations
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||||
* \author Christian Helmuth
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||||
* \author Christian Prochaska
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* \author Norman Feske
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* \date 2015-06-23
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||||
*/
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||||
|
||||
/*
|
||||
* Copyright (C) 2015 Genode Labs GmbH
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*
|
||||
* This file is part of the Genode OS framework, which is distributed
|
||||
* under the terms of the GNU General Public License version 2.
|
||||
*/
|
||||
|
||||
/* Genode includes */
|
||||
#include <base/env.h>
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||||
#include <os/path.h>
|
||||
#include <util/token.h>
|
||||
|
||||
/* libc includes */
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||||
#include <sys/types.h>
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||||
#include <sys/socket.h>
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||||
#include <errno.h>
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||||
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||||
/* libc-internal includes */
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||||
#include "libc_file.h"
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||||
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||||
using namespace Libc;
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||||
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||||
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||||
#ifdef GENODE_RELEASE
|
||||
#undef PERR
|
||||
#define PERR(...)
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||||
#endif /* GENODE_RELEASE */
|
||||
|
||||
static bool const verbose = false;
|
||||
#define PDBGV(...) if (verbose) PDBG(__VA_ARGS__)
|
||||
|
||||
|
||||
extern "C" int _accept(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
|
||||
{
|
||||
return accept(libc_fd, addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int accept(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
|
||||
{
|
||||
File_descriptor *ret_fd;
|
||||
FD_FUNC_WRAPPER_GENERIC(ret_fd =, 0, accept, libc_fd, addr, addrlen);
|
||||
return ret_fd ? ret_fd->libc_fd : INVALID_FD;
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _bind(int libc_fd, const struct sockaddr *addr,
|
||||
socklen_t addrlen)
|
||||
{
|
||||
return bind(libc_fd, addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int bind(int libc_fd, const struct sockaddr *addr,
|
||||
socklen_t addrlen) {
|
||||
FD_FUNC_WRAPPER(bind, libc_fd, addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" int connect(int libc_fd, const struct sockaddr *addr,
|
||||
socklen_t addrlen) {
|
||||
FD_FUNC_WRAPPER(connect, libc_fd, addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" int _connect(int libc_fd, const struct sockaddr *addr,
|
||||
socklen_t addrlen)
|
||||
{
|
||||
return connect(libc_fd, addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" void freeaddrinfo(struct addrinfo *res)
|
||||
{
|
||||
Plugin *plugin;
|
||||
|
||||
plugin = plugin_registry()->get_plugin_for_freeaddrinfo(res);
|
||||
|
||||
if (!plugin) {
|
||||
PERR("no plugin found for freeaddrinfo()");
|
||||
return;
|
||||
}
|
||||
|
||||
plugin->freeaddrinfo(res);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int getaddrinfo(const char *node, const char *service,
|
||||
const struct addrinfo *hints,
|
||||
struct addrinfo **res)
|
||||
{
|
||||
Plugin *plugin;
|
||||
|
||||
plugin = plugin_registry()->get_plugin_for_getaddrinfo(node, service, hints, res);
|
||||
|
||||
if (!plugin) {
|
||||
PERR("no plugin found for getaddrinfo()");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return plugin->getaddrinfo(node, service, hints, res);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _getpeername(int libc_fd, struct sockaddr *addr, socklen_t *addrlen) {
|
||||
FD_FUNC_WRAPPER(getpeername, libc_fd, addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" int getpeername(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
|
||||
{
|
||||
return _getpeername(libc_fd, addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _getsockname(int libc_fd, struct sockaddr *addr, socklen_t *addrlen) {
|
||||
FD_FUNC_WRAPPER(getsockname, libc_fd, addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" int getsockname(int libc_fd, struct sockaddr *addr, socklen_t *addrlen)
|
||||
{
|
||||
return _getsockname(libc_fd, addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _listen(int libc_fd, int backlog)
|
||||
{
|
||||
return listen(libc_fd, backlog);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int listen(int libc_fd, int backlog) {
|
||||
FD_FUNC_WRAPPER(listen, libc_fd, backlog); }
|
||||
|
||||
|
||||
extern "C" ssize_t recv(int libc_fd, void *buf, ::size_t len, int flags) {
|
||||
FD_FUNC_WRAPPER(recv, libc_fd, buf, len, flags); }
|
||||
|
||||
|
||||
extern "C" ssize_t _recvfrom(int libc_fd, void *buf, ::size_t len, int flags,
|
||||
struct sockaddr *src_addr, socklen_t *addrlen) {
|
||||
FD_FUNC_WRAPPER(recvfrom, libc_fd, buf, len, flags, src_addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" ssize_t recvfrom(int libc_fd, void *buf, ::size_t len, int flags,
|
||||
struct sockaddr *src_addr, socklen_t *addrlen)
|
||||
{
|
||||
return _recvfrom(libc_fd, buf, len, flags, src_addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" ssize_t recvmsg(int libc_fd, struct msghdr *msg, int flags) {
|
||||
FD_FUNC_WRAPPER(recvmsg, libc_fd, msg, flags); }
|
||||
|
||||
|
||||
extern "C" ssize_t send(int libc_fd, const void *buf, ::size_t len, int flags) {
|
||||
FD_FUNC_WRAPPER(send, libc_fd, buf, len, flags); }
|
||||
|
||||
|
||||
extern "C" ssize_t _sendto(int libc_fd, const void *buf, ::size_t len, int flags,
|
||||
const struct sockaddr *dest_addr, socklen_t addrlen) {
|
||||
FD_FUNC_WRAPPER(sendto, libc_fd, buf, len, flags, dest_addr, addrlen); }
|
||||
|
||||
|
||||
extern "C" ssize_t sendto(int libc_fd, const void *buf, ::size_t len, int flags,
|
||||
const struct sockaddr *dest_addr, socklen_t addrlen)
|
||||
{
|
||||
return _sendto(libc_fd, buf, len, flags, dest_addr, addrlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _getsockopt(int libc_fd, int level, int optname,
|
||||
void *optval, socklen_t *optlen)
|
||||
{
|
||||
return getsockopt(libc_fd, level, optname, optval, optlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int getsockopt(int libc_fd, int level, int optname,
|
||||
void *optval, socklen_t *optlen) {
|
||||
FD_FUNC_WRAPPER(getsockopt, libc_fd, level, optname, optval, optlen); }
|
||||
|
||||
|
||||
extern "C" int _setsockopt(int libc_fd, int level, int optname,
|
||||
const void *optval, socklen_t optlen) {
|
||||
FD_FUNC_WRAPPER(setsockopt, libc_fd, level, optname, optval, optlen); }
|
||||
|
||||
|
||||
extern "C" int setsockopt(int libc_fd, int level, int optname,
|
||||
const void *optval, socklen_t optlen)
|
||||
{
|
||||
return _setsockopt(libc_fd, level, optname, optval, optlen);
|
||||
}
|
||||
|
||||
|
||||
extern "C" int shutdown(int libc_fd, int how) {
|
||||
FD_FUNC_WRAPPER(shutdown, libc_fd, how); }
|
||||
|
||||
|
||||
extern "C" int socket(int domain, int type, int protocol)
|
||||
{
|
||||
Plugin *plugin;
|
||||
File_descriptor *new_fdo;
|
||||
|
||||
plugin = plugin_registry()->get_plugin_for_socket(domain, type, protocol);
|
||||
|
||||
if (!plugin) {
|
||||
PERR("no plugin found for socket()");
|
||||
return -1;
|
||||
}
|
||||
|
||||
new_fdo = plugin->socket(domain, type, protocol);
|
||||
if (!new_fdo) {
|
||||
PERR("plugin()->socket() failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return new_fdo->libc_fd;
|
||||
}
|
||||
|
||||
|
||||
extern "C" int _socket(int domain, int type, int protocol)
|
||||
{
|
||||
return socket(domain, type, protocol);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user