[PATCH v6 3/6] fsmonitor: relocate socket file if .git directory is remote

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From: Eric DeCosta <edecosta@xxxxxxxxxxxxx>

If the .git directory is on a remote file system, create the socket
file in 'fsmonitor.socketDir' if it is defined, else create it in $HOME.

Signed-off-by: Eric DeCosta <edecosta@xxxxxxxxxxxxx>
---
 Makefile                            |  1 +
 compat/fsmonitor/fsm-ipc-darwin.c   | 46 +++++++++++++++++++++++++++++
 compat/fsmonitor/fsm-ipc-win32.c    |  4 +++
 contrib/buildsystems/CMakeLists.txt |  2 ++
 fsmonitor-ipc.c                     |  2 --
 5 files changed, 53 insertions(+), 2 deletions(-)
 create mode 100644 compat/fsmonitor/fsm-ipc-darwin.c
 create mode 100644 compat/fsmonitor/fsm-ipc-win32.c

diff --git a/Makefile b/Makefile
index b026f3e8cf0..5cd5ad818b8 100644
--- a/Makefile
+++ b/Makefile
@@ -2033,6 +2033,7 @@ ifdef FSMONITOR_DAEMON_BACKEND
 	COMPAT_CFLAGS += -DHAVE_FSMONITOR_DAEMON_BACKEND
 	COMPAT_OBJS += compat/fsmonitor/fsm-listen-$(FSMONITOR_DAEMON_BACKEND).o
 	COMPAT_OBJS += compat/fsmonitor/fsm-health-$(FSMONITOR_DAEMON_BACKEND).o
+	COMPAT_OBJS += compat/fsmonitor/fsm-ipc-$(FSMONITOR_DAEMON_BACKEND).o
 endif
 
 ifdef FSMONITOR_OS_SETTINGS
diff --git a/compat/fsmonitor/fsm-ipc-darwin.c b/compat/fsmonitor/fsm-ipc-darwin.c
new file mode 100644
index 00000000000..afaca96dab9
--- /dev/null
+++ b/compat/fsmonitor/fsm-ipc-darwin.c
@@ -0,0 +1,46 @@
+#include "cache.h"
+#include "config.h"
+#include "strbuf.h"
+#include "fsmonitor.h"
+#include "fsmonitor-ipc.h"
+#include "fsmonitor-path-utils.h"
+
+static GIT_PATH_FUNC(fsmonitor_ipc__get_default_path, "fsmonitor--daemon.ipc")
+
+const char *fsmonitor_ipc__get_path(void)
+{
+	static const char *ipc_path;
+	SHA_CTX sha1ctx;
+	char *sock_dir;
+	struct strbuf ipc_file = STRBUF_INIT;
+	unsigned char hash[SHA_DIGEST_LENGTH];
+
+	if (ipc_path)
+		return ipc_path;
+
+	ipc_path = fsmonitor_ipc__get_default_path();
+
+	/* By default the socket file is created in the .git directory */
+	if (fsmonitor__is_fs_remote(ipc_path) < 1)
+		return ipc_path;
+
+	SHA1_Init(&sha1ctx);
+	SHA1_Update(&sha1ctx, the_repository->worktree, strlen(the_repository->worktree));
+	SHA1_Final(hash, &sha1ctx);
+
+	repo_config_get_string(the_repository, "fsmonitor.socketdir", &sock_dir);
+
+	/* Create the socket file in either socketDir or $HOME */
+	if (sock_dir && *sock_dir)
+		strbuf_addf(&ipc_file, "%s/.git-fsmonitor-%s",
+					sock_dir, hash_to_hex(hash));
+	else
+		strbuf_addf(&ipc_file, "~/.git-fsmonitor-%s", hash_to_hex(hash));
+
+	ipc_path = interpolate_path(ipc_file.buf, 1);
+	if (!ipc_path)
+		die(_("Invalid path: %s"), ipc_file.buf);
+
+	strbuf_release(&ipc_file);
+	return ipc_path;
+}
diff --git a/compat/fsmonitor/fsm-ipc-win32.c b/compat/fsmonitor/fsm-ipc-win32.c
new file mode 100644
index 00000000000..769a88639f6
--- /dev/null
+++ b/compat/fsmonitor/fsm-ipc-win32.c
@@ -0,0 +1,4 @@
+#include "cache.h"
+#include "fsmonitor-ipc.h"
+
+GIT_PATH_FUNC(fsmonitor_ipc__get_path, "fsmonitor--daemon.ipc")
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index b88494bf59b..7e7b6b9a362 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -308,6 +308,7 @@ if(SUPPORTS_SIMPLE_IPC)
 		add_compile_definitions(HAVE_FSMONITOR_DAEMON_BACKEND)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-listen-win32.c)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-health-win32.c)
+		list(APPEND compat_SOURCES compat/fsmonitor/fsm-ipc-win32.c)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-path-utils-win32.c)
 
 		add_compile_definitions(HAVE_FSMONITOR_OS_SETTINGS)
@@ -316,6 +317,7 @@ if(SUPPORTS_SIMPLE_IPC)
 		add_compile_definitions(HAVE_FSMONITOR_DAEMON_BACKEND)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-listen-darwin.c)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-health-darwin.c)
+		list(APPEND compat_SOURCES compat/fsmonitor/fsm-ipc-darwin.c)
 		list(APPEND compat_SOURCES compat/fsmonitor/fsm-path-utils-darwin.c)
 
 		add_compile_definitions(HAVE_FSMONITOR_OS_SETTINGS)
diff --git a/fsmonitor-ipc.c b/fsmonitor-ipc.c
index 789e7397baa..caad2e246a0 100644
--- a/fsmonitor-ipc.c
+++ b/fsmonitor-ipc.c
@@ -47,8 +47,6 @@ int fsmonitor_ipc__is_supported(void)
 	return 1;
 }
 
-GIT_PATH_FUNC(fsmonitor_ipc__get_path, "fsmonitor--daemon.ipc")
-
 enum ipc_active_state fsmonitor_ipc__get_state(void)
 {
 	return ipc_get_active_state(fsmonitor_ipc__get_path());
-- 
gitgitgadget




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