compat/fsmonitor/fsm-settings-darwin.c

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