+
+ char signature[2];
+ c = read(mb_fd, signature, 2);
+ lseek(mb_fd, 0, SEEK_SET);
+
+ if (c == 2 && !memcmp(signature, "\037\213", 2)) //gzip
+ {
+ debug("[decompressing] ");
+ int fds[2];
+ if (pipe(fds))
+ die("pipe failed: %m");
+ int pid = fork();
+ if (pid < 0)
+ die("fork failed: %m");
+ if (!pid)
+ {
+ if (dup2(mb_fd, 0) < 0 || dup2(fds[1], 1) < 0)
+ die("dup2 failed: %m");
+ close(fds[0]);
+ close(fds[1]);
+ close(mb_fd);
+ execlp("gzip", "gzip", "-cd", NULL);
+ die("Cannot execute gzip: %m");
+ }
+ close(fds[1]);
+ close(mb_fd);
+ mb_fd = fds[0];
+ compressed = 1;
+ }