From 3943cad7edcafafab0b1a5c1aff25ff3518012f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Tue, 26 May 2020 20:11:38 +0200
Subject: [PATCH] client/server: implement '--hold' in footclient

---
 client.c | 13 +++++++++++++
 server.c |  4 ++++
 2 files changed, 17 insertions(+)

diff --git a/client.c b/client.c
index 1458c7cd..0d0feb49 100644
--- a/client.c
+++ b/client.c
@@ -39,6 +39,7 @@ print_usage(const char *prog_name)
            "     --fullscreen                       start in fullscreen mode\n"
            "     --login-shell                      start shell as a login shell\n"
            "  -s,--server-socket=PATH               path to the server UNIX domain socket (default=$XDG_RUNTIME_DIR/foot-$XDG_SESSION_ID.sock)\n"
+           "     --hold                             remain open after child process exits\n"
            "  -l,--log-colorize=[never|always|auto] enable/disable colorization of log output on stderr\n"
            "  -v,--version                          show the version number and quit\n");
 }
@@ -58,6 +59,7 @@ main(int argc, char *const *argv)
         {"fullscreen",    no_argument,       NULL, 'F'},
         {"login-shell",   no_argument,       NULL, 'L'},
         {"server-socket", required_argument, NULL, 's'},
+        {"hold",          no_argument,       NULL, 'H'},
         {"log-colorize",  optional_argument, NULL, 'l'},
         {"version",       no_argument,       NULL, 'v'},
         {"help",          no_argument,       NULL, 'h'},
@@ -72,6 +74,7 @@ main(int argc, char *const *argv)
     bool login_shell = false;
     bool maximized = false;
     bool fullscreen = false;
+    bool hold = false;
 
     while (true) {
         int c = getopt_long(argc, argv, "+:t:a:s:l::hv", longopts, NULL);
@@ -109,6 +112,10 @@ main(int argc, char *const *argv)
             server_socket_path = optarg;
             break;
 
+        case 'H':
+            hold = true;
+            break;
+
         case 'l':
             if (optarg == NULL || strcmp(optarg, "auto") == 0)
                 log_colorize = LOG_COLORIZE_AUTO;
@@ -212,6 +219,7 @@ main(int argc, char *const *argv)
     total_len += sizeof(app_id_len) + app_id_len;
     total_len += sizeof(uint8_t);  /* maximized */
     total_len += sizeof(uint8_t);  /* fullscreen */
+    total_len += sizeof(uint8_t);  /* hold */
     total_len += sizeof(uint8_t);  /* login_shell */
     total_len += sizeof(argc);
 
@@ -266,6 +274,11 @@ main(int argc, char *const *argv)
         goto err;
     }
 
+    if (send(fd, &(uint8_t){hold}, sizeof(uint8_t), 0) != sizeof(uint8_t)) {
+        LOG_ERRNO("failed to send hold");
+        goto err;
+    }
+
     if (send(fd, &(uint8_t){login_shell}, sizeof(uint8_t), 0) != sizeof(uint8_t)) {
         LOG_ERRNO("failed to send login-shell");
         goto err;
diff --git a/server.c b/server.c
index ab627877..c2778ad7 100644
--- a/server.c
+++ b/server.c
@@ -267,6 +267,9 @@ fdm_client(struct fdm *fdm, int fd, int events, void *data)
     CHECK_BUF(sizeof(uint8_t));
     const uint8_t fullscreen = *(const uint8_t *)p; p += sizeof(fullscreen);
 
+    CHECK_BUF(sizeof(uint8_t));
+    const uint8_t hold = *(const uint8_t *)p; p += sizeof(hold);
+
     CHECK_BUF(sizeof(uint8_t));
     const uint8_t login_shell = *(const uint8_t *)p; p += sizeof(login_shell);
 
@@ -304,6 +307,7 @@ fdm_client(struct fdm *fdm, int fd, int events, void *data)
         ? strdup(title) : strdup(server->conf->title);
     client->conf.app_id = strlen(app_id) > 0
         ? strdup(app_id) : strdup(server->conf->app_id);
+    client->conf.hold_at_exit = hold;
     client->conf.login_shell = login_shell;
 
     if (maximized)