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64 lines
1.1 KiB
64 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#define _GNU_SOURCE |
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#include <sys/uio.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <sys/socket.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
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#include "../../include/uapi/linux/bpf.h" |
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#include <asm/unistd.h> |
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#include "msgfmt.h" |
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FILE *debug_f; |
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static int handle_get_cmd(struct mbox_request *cmd) |
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{ |
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switch (cmd->cmd) { |
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case 0: |
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return 0; |
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default: |
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break; |
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} |
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return -ENOPROTOOPT; |
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} |
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static int handle_set_cmd(struct mbox_request *cmd) |
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{ |
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return -ENOPROTOOPT; |
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} |
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static void loop(void) |
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{ |
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while (1) { |
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struct mbox_request req; |
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struct mbox_reply reply; |
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int n; |
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n = read(0, &req, sizeof(req)); |
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if (n != sizeof(req)) { |
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fprintf(debug_f, "invalid request %d\n", n); |
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return; |
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} |
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reply.status = req.is_set ? |
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handle_set_cmd(&req) : |
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handle_get_cmd(&req); |
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n = write(1, &reply, sizeof(reply)); |
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if (n != sizeof(reply)) { |
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fprintf(debug_f, "reply failed %d\n", n); |
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return; |
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} |
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} |
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} |
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int main(void) |
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{ |
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debug_f = fopen("/dev/kmsg", "w"); |
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setvbuf(debug_f, 0, _IOLBF, 0); |
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fprintf(debug_f, "<5>Started bpfilter\n"); |
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loop(); |
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fclose(debug_f); |
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return 0; |
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}
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