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Use fork in swaygrab instead of popen.

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This commit is contained in:
Clar Charr 2017-06-20 16:03:40 -04:00
parent ab05f60034
commit fab5720576
1 changed files with 21 additions and 10 deletions
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29
swaygrab/main.c
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@ -9,6 +9,7 @@
#include <stdint.h>
#include <math.h>
#include <time.h>
#include <sys/wait.h>
#include <json-c/json.h>
#include "log.h"
#include "ipc-client.h"
@ -47,17 +48,27 @@ void grab_and_apply_magick(const char *file, const char *payload,
return;
}
const char *fmt = "convert -depth 8 -size %dx%d+0 rgba:- -flip %s";
char *cmd = malloc(strlen(fmt) - 6 /*args*/
+ numlen(width) + numlen(height) + strlen(file) + 1);
sprintf(cmd, fmt, width, height, file);
char size[10 + 1 + 10 + 2 + 1]; // int32_t are max 10 digits
sprintf(size, "%dx%d+0", width, height);
FILE *f = popen(cmd, "w");
fwrite(pixels, 1, len, f);
fflush(f);
fclose(f);
pid_t child;
int fd[2];
pipe(fd);
if ((child = fork()) < 0) {
sway_log(L_ERROR, "Swaygrab failed to fork.");
exit(EXIT_FAILURE);
} else if (child == 0) {
close(fd[1]);
write(fd[0], pixels, len);
free(pixels - 9);
free(cmd);
waitpid(child, NULL, 0);
} else {
close(fd[0]);
execlp("convert", "-depth", "8", "-size", size, "rgba:-", "-flip", file, NULL);
sway_log(L_ERROR, "Swaygrab could not run convert.");
exit(EXIT_FAILURE);
}
}
void grab_and_apply_movie_magic(const char *file, const char *payload,