From 22656ae1e423918eb3bbee78c463e4cd190491de Mon Sep 17 00:00:00 2001 From: Markus Ongyerth Date: Mon, 11 Sep 2017 22:32:00 +0200 Subject: [PATCH] fixes a hanging swaygrab https://github.com/SirCmpwn/sway/issues/1350 is fixed with this. The commit that change swaygrab to use fork instead of Popen tried to write to the read end of the pipe in the child branch and exec in the parent branch. This commit fixes both of those and closes the write fd after writing, so convert actually exits. --- swaygrab/main.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/swaygrab/main.c b/swaygrab/main.c index 6e851899..1b699bb9 100644 --- a/swaygrab/main.c +++ b/swaygrab/main.c @@ -58,14 +58,19 @@ void grab_and_apply_magick(const char *file, const char *payload, if ((child = fork()) < 0) { sway_log(L_ERROR, "Swaygrab failed to fork."); exit(EXIT_FAILURE); - } else if (child == 0) { + } else if (child != 0) { + close(fd[0]); + write(fd[1], pixels, len); close(fd[1]); - write(fd[0], pixels, len); free(pixels - 9); waitpid(child, NULL, 0); } else { + close(fd[1]); + if (dup2(fd[0], 0) != 0) { + sway_log(L_ERROR, "Could not fdup the pipe"); + } close(fd[0]); - execlp("convert", "-depth", "8", "-size", size, "rgba:-", "-flip", file, NULL); + execlp("convert", "convert", "-depth", "8", "-size", size, "rgba:-", "-flip", file, NULL); sway_log(L_ERROR, "Swaygrab could not run convert."); exit(EXIT_FAILURE); } @@ -104,7 +109,7 @@ void grab_and_apply_movie_magic(const char *file, const char *payload, "-video_size %dx%d -pixel_format argb " "-i pipe:0 -r %d -vf vflip %s"; char *cmd = malloc(strlen(fmt) - 8 /*args*/ - + strlen(ffmpeg_opts) + numlen(width) + numlen(height) + + strlen(ffmpeg_opts) + numlen(width) + numlen(height) + numlen(framerate) * 2 + strlen(file) + 1); sprintf(cmd, fmt, ffmpeg_opts, framerate, width, height, framerate, file);