compat/fsmonitor/fsm-settings-darwin.c

   1 #include "git-compat-util.h"
   2 #include "config.h"
   3 #include "fsmonitor-ll.h"
   4 #include "fsmonitor-ipc.h"
   5 #include "fsmonitor-settings.h"
   6 #include "fsmonitor-path-utils.h"
   7
   8  /*
   9  * For the builtin FSMonitor, we create the Unix domain socket for the
  10  * IPC in the .git directory.  If the working directory is remote,
  11  * then the socket will be created on the remote file system.  This
  12  * can fail if the remote file system does not support UDS file types
  13  * (e.g. smbfs to a Windows server) or if the remote kernel does not
  14  * allow a non-local process to bind() the socket.  (These problems
  15  * could be fixed by moving the UDS out of the .git directory and to a
  16  * well-known local directory on the client machine, but care should
  17  * be taken to ensure that $HOME is actually local and not a managed
  18  * file share.)
  19  *
  20  * FAT32 and NTFS working directories are problematic too.
  21  *
  22  * The builtin FSMonitor uses a Unix domain socket in the .git
  23  * directory for IPC.  These Windows drive formats do not support
  24  * Unix domain sockets, so mark them as incompatible for the daemon.
  25  *
  26  */
  27 static enum fsmonitor_reason check_uds_volume(struct repository *r)
  28 {
  29         struct fs_info fs;
  30         const char *ipc_path = fsmonitor_ipc__get_path(r);
  31         struct strbuf path = STRBUF_INIT;
  32         strbuf_add(&path, ipc_path, strlen(ipc_path));
  33
  34         if (fsmonitor__get_fs_info(dirname(path.buf), &fs) == -1) {
  35                 strbuf_release(&path);
  36                 return FSMONITOR_REASON_ERROR;
  37         }
  38
  39         strbuf_release(&path);
  40
  41         if (fs.is_remote ||
  42                 !strcmp(fs.typename, "msdos") ||
  43                 !strcmp(fs.typename, "ntfs")) {
  44                 free(fs.typename);
  45                 return FSMONITOR_REASON_NOSOCKETS;
  46         }
  47
  48         free(fs.typename);
  49         return FSMONITOR_REASON_OK;
  50 }
  51
  52 enum fsmonitor_reason fsm_os__incompatible(struct repository *r, int ipc)
  53 {
  54         enum fsmonitor_reason reason;
  55
  56         if (ipc) {
  57                 reason = check_uds_volume(r);
  58                 if (reason != FSMONITOR_REASON_OK)
  59                         return reason;
  60         }
  61
  62         return FSMONITOR_REASON_OK;
  63 }