Merge branch 'ew/daemon-socket-keepalive'

Recent update to "git daemon" tries to enable the socket-level
KEEPALIVE, but when it is spawned via inetd, the standard input
file descriptor may not necessarily be connected to a socket.
Suppress an ENOTSOCK error from setsockopt().

* ew/daemon-socket-keepalive:
Windows: add missing definition of ENOTSOCK
daemon: ignore ENOTSOCK from setsockopt

diff --combined compat/mingw.h
index 233933ee86b2d069c7fca5b0dc39ea6c6badb20b,7489d2980e751f62badd6d92a40625c6023f9f76..95e128fcfd45e98c091256265c7d9bda95ec733f
--- 1/compat/mingw.h
--- 2/compat/mingw.h
+++ b/compat/mingw.h
@@@ -73,6 -73,9 +73,9 @@@ typedef int pid_t
  #ifndef ECONNABORTED
  #define ECONNABORTED WSAECONNABORTED
  #endif
+ #ifndef ENOTSOCK
+ #define ENOTSOCK WSAENOTSOCK
+ #endif
  
  struct passwd {
        char *pw_name;
@@@ -142,7 -145,6 +145,7 @@@ static inline int fcntl(int fd, int cmd
  #define sigemptyset(x) (void)0
  static inline int sigaddset(sigset_t *set, int signum)
  { return 0; }
 +#define SIG_BLOCK 0
  #define SIG_UNBLOCK 0
  static inline int sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
  { return 0; }
@@@ -407,7 -409,7 +410,7 @@@ static inline void convert_slashes(cha
  int mingw_offset_1st_component(const char *path);
  #define offset_1st_component mingw_offset_1st_component
  #define PATH_SEP ';'
 -#ifndef __MINGW64_VERSION_MAJOR
 +#if !defined(__MINGW64_VERSION_MAJOR) && (!defined(_MSC_VER) || _MSC_VER < 1800)
  #define PRIuMAX "I64u"
  #define PRId64 "I64d"
  #else
@@@ -417,6 -419,9 +420,6 @@@
  void mingw_open_html(const char *path);
  #define open_html mingw_open_html
  
 -void mingw_mark_as_git_dir(const char *dir);
 -#define mark_as_git_dir mingw_mark_as_git_dir
 -
  /**
   * Converts UTF-8 encoded string to UTF-16LE.
   *
@@@ -532,10 -537,10 +535,10 @@@ extern CRITICAL_SECTION pinfo_cs
   * A replacement of main() that adds win32 specific initialization.
   */
  
 -void mingw_startup();
 -#define main(c,v) dummy_decl_mingw_main(); \
 +void mingw_startup(void);
 +#define main(c,v) dummy_decl_mingw_main(void); \
  static int mingw_main(c,v); \
 -int main(int argc, char **argv) \
 +int main(int argc, const char **argv) \
  { \
        mingw_startup(); \
        return mingw_main(__argc, (void *)__argv); \

diff --combined daemon.c
index e647254c196f8270691cd369b51ac5132add1259,a84495113e4c4e85243937ad0306a17981003c7b..425aad0507f48ca07b11faa05828ea841bdd302f
--- 1/daemon.c
--- 2/daemon.c
+++ b/daemon.c
@@@ -1,5 -1,6 +1,5 @@@
  #include "cache.h"
  #include "pkt-line.h"
 -#include "exec_cmd.h"
  #include "run-command.h"
  #include "strbuf.h"
  #include "string-list.h"
@@@ -31,7 -32,7 +31,7 @@@ static const char daemon_usage[] 
  "           [<directory>...]";
  
  /* List of acceptable pathname prefixes */
 -static char **ok_paths;
 +static const char **ok_paths;
  static int strict_paths;
  
  /* If this is set, git-daemon-export-ok is not required */
@@@ -239,7 -240,7 +239,7 @@@ static const char *path_ok(const char *
        }
  
        if ( ok_paths && *ok_paths ) {
 -              char **pp;
 +              const char **pp;
                int pathlen = strlen(path);
  
                /* The validation is done on the paths after enter_repo
@@@ -672,9 -673,11 +672,11 @@@ static void set_keep_alive(int sockfd
  {
        int ka = 1;
  
-       if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0)
-               logerror("unable to set SO_KEEPALIVE on socket: %s",
-                       strerror(errno));
+       if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) {
+               if (errno != ENOTSOCK)
+                       logerror("unable to set SO_KEEPALIVE on socket: %s",
+                               strerror(errno));
+       }
  }
  
  static int execute(void)
@@@ -1191,7 -1194,7 +1193,7 @@@ static int serve(struct string_list *li
        return service_loop(&socklist);
  }
  
 -int main(int argc, char **argv)
 +int cmd_main(int argc, const char **argv)
  {
        int listen_port = 0;
        struct string_list listen_addr = STRING_LIST_INIT_NODUP;
@@@ -1201,8 -1204,12 +1203,8 @@@
        struct credentials *cred = NULL;
        int i;
  
 -      git_setup_gettext();
 -
 -      git_extract_argv0_path(argv[0]);
 -
        for (i = 1; i < argc; i++) {
 -              char *arg = argv[i];
 +              const char *arg = argv[i];
                const char *v;
  
                if (skip_prefix(arg, "--listen=", &v)) {
@@@ -1376,7 -1383,8 +1378,7 @@@
        if (detach) {
                if (daemonize())
                        die("--detach not supported on this platform");
 -      } else
 -              sanitize_stdfds();
 +      }
  
        if (pid_file)
                write_file(pid_file, "%"PRIuMAX, (uintmax_t) getpid());