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Translate cmsg_level in recvmsg()/sendmsg() - needed for passing fds over Unix sockets
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src/kernel/emulation/linux/network/recvmsg.c
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src/kernel/emulation/linux/network/recvmsg.c
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#include <linux-syscalls/linux.h>
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#include <stddef.h>
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#include "duct.h"
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#include "getsockopt.h"
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extern void *malloc(__SIZE_TYPE__ size);
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extern void free(void* ptr);
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if (lmsg.msg_controllen > 0)
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{
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bchdr->cmsg_len = lchdr->cmsg_len;
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bchdr->cmsg_level = lchdr->cmsg_level;
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bchdr->cmsg_level = socket_level_linux_to_bsd(lchdr->cmsg_level);
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bchdr->cmsg_type = lchdr->cmsg_type;
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// __simple_printf("Copy %p to %p, %d bytes (of %d)\n", lchdr->cmsg_data, bchdr->cmsg_data, lchdr->cmsg_len - sizeof(struct linux_cmsghdr), lchdr->cmsg_len);
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}
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int socket_level_bsd_to_linux(int level)
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{
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switch (level)
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{
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case BSD_SOL_SOCKET:
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return LINUX_SOL_SOCKET;
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default:
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return level;
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}
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}
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int socket_level_linux_to_bsd(int level)
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{
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switch (level)
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{
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case LINUX_SOL_SOCKET:
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return BSD_SOL_SOCKET;
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default:
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return level;
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}
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}
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src/kernel/emulation/linux/network/recvmsg.h
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src/kernel/emulation/linux/network/recvmsg.h
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long sys_recvmsg(int socket, struct bsd_msghdr* msg, int flags);
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long sys_recvmsg_nocancel(int socket, struct bsd_msghdr* msg, int flags);
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int socket_level_bsd_to_linux(int level);
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int socket_level_linux_to_bsd(int level);
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#define LINUX_SYS_RECVMSG 17
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#endif
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src/kernel/emulation/linux/network/sendmsg.c
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src/kernel/emulation/linux/network/sendmsg.c
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lmsg.msg_controllen = msg->msg_controllen + 4;
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lchdr->cmsg_len = bchdr->cmsg_len;
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lchdr->cmsg_level = bchdr->cmsg_level;
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lchdr->cmsg_level = socket_level_bsd_to_linux(bchdr->cmsg_level);
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lchdr->cmsg_type = bchdr->cmsg_type;
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memcpy(lchdr->cmsg_data, bchdr->cmsg_data,