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net: add __sys_accept4_file() helper
This is identical to __sys_accept4(), except it takes a struct file instead of an fd, and it also allows passing in extra file->f_flags flags. The latter is done to support masking in O_NONBLOCK without manipulating the original file flags. No functional changes in this patch. Cc: netdev@vger.kernel.org Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@@ -392,6 +392,9 @@ extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,
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extern int __sys_sendto(int fd, void __user *buff, size_t len,
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unsigned int flags, struct sockaddr __user *addr,
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int addr_len);
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extern int __sys_accept4_file(struct file *file, unsigned file_flags,
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struct sockaddr __user *upeer_sockaddr,
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int __user *upeer_addrlen, int flags);
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extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
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int __user *upeer_addrlen, int flags);
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extern int __sys_socket(int family, int type, int protocol);
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