diff options
Diffstat (limited to 'lib-src/emacsclient.c')
| -rw-r--r-- | lib-src/emacsclient.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/lib-src/emacsclient.c b/lib-src/emacsclient.c index 8fa571fd4ef..1f3e72f81db 100644 --- a/lib-src/emacsclient.c +++ b/lib-src/emacsclient.c @@ -80,9 +80,6 @@ char *w32_getenv (const char *); #include <sys/stat.h> #include <unistd.h> -#ifndef WINDOWSNT -# include <acl.h> -#endif #include <filename.h> #include <intprops.h> #include <min-max.h> @@ -94,10 +91,6 @@ char *w32_getenv (const char *); # pragma GCC diagnostic ignored "-Wformat-truncation=2" #endif -#if !defined O_PATH && !defined WINDOWSNT -# define O_PATH O_SEARCH -#endif - /* Name used to invoke this program. */ static char const *progname; @@ -123,6 +116,9 @@ static bool eval; /* True means open a new frame. --create-frame etc. */ static bool create_frame; +/* True means reuse a frame if it already exists. */ +static bool reuse_frame; + /* The display on which Emacs should work. --display. */ static char const *display; @@ -172,6 +168,7 @@ static struct option const longopts[] = { "tty", no_argument, NULL, 't' }, { "nw", no_argument, NULL, 't' }, { "create-frame", no_argument, NULL, 'c' }, + { "reuse-frame", no_argument, NULL, 'r' }, { "alternate-editor", required_argument, NULL, 'a' }, { "frame-parameters", required_argument, NULL, 'F' }, #ifdef SOCKETS_IN_FILE_SYSTEM @@ -558,6 +555,11 @@ decode_options (int argc, char **argv) create_frame = true; break; + case 'r': + create_frame = true; + reuse_frame = true; + break; + case 'p': parent_id = optarg; create_frame = true; @@ -659,6 +661,8 @@ The following OPTIONS are accepted:\n\ -nw, -t, --tty Open a new Emacs frame on the current terminal\n\ -c, --create-frame Create a new frame instead of trying to\n\ use the current Emacs frame\n\ +-r, --reuse-frame Create a new frame if none exists, otherwise\n\ + use the current Emacs frame\n\ ", "\ -F ALIST, --frame-parameters=ALIST\n\ Set the parameters of a new frame\n\ @@ -1140,6 +1144,12 @@ process_grouping (void) #ifdef SOCKETS_IN_FILE_SYSTEM +# include <acl.h> + +# ifndef O_PATH +# define O_PATH O_SEARCH +# endif + /* A local socket address. The union avoids the need to cast. */ union local_sockaddr { @@ -1406,10 +1416,8 @@ local_sockname (int s, char sockname[socknamesize], int tmpdirlen, /* Put the full address name into the buffer, since the caller might need it for diagnostics. But don't overrun the buffer. */ uintmax_t uidmax = uid; - int emacsdirlen; int suffixlen = snprintf (sockname + tmpdirlen, socknamesize - tmpdirlen, - "/emacs%"PRIuMAX"%n/%s", uidmax, &emacsdirlen, - server_name); + "/emacs%"PRIuMAX"/%s", uidmax, server_name); if (! (0 <= suffixlen && suffixlen < socknamesize - tmpdirlen)) return ENAMETOOLONG; @@ -1417,7 +1425,8 @@ local_sockname (int s, char sockname[socknamesize], int tmpdirlen, this user's directory and does not let others write to it; this fends off some symlink attacks. To avoid races, keep the parent directory open while checking. */ - char *emacsdirend = sockname + tmpdirlen + emacsdirlen; + char *emacsdirend = sockname + tmpdirlen + suffixlen - + strlen(server_name) - 1; *emacsdirend = '\0'; int dir = openat (AT_FDCWD, sockname, O_PATH | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); @@ -1948,7 +1957,7 @@ main (int argc, char **argv) if (nowait) send_to_emacs (emacs_socket, "-nowait "); - if (!create_frame) + if (!create_frame || reuse_frame) send_to_emacs (emacs_socket, "-current-frame "); if (display) |