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48 lines
720 B
48 lines
720 B
7 years ago
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#include "socket_close.h"
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#include <ccan/noerr/noerr.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <unistd.h>
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/*
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Simplified (minus all the error checks):
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shutdown(fd, SHUT_WR);
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for (;;) {
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char unused[64]
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sys_res = read(fd, unused, 64);
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if (sys_res == 0)
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break;
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}
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close(fd);
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*/
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bool socket_close(int fd)
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{
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char unused[64];
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int sys_res;
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sys_res = shutdown(fd, SHUT_WR);
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if (sys_res < 0) {
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close_noerr(fd);
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return false;
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}
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for (;;) {
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do {
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sys_res = read(fd, unused, sizeof(unused));
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} while (sys_res < 0 && errno == EINTR);
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if (sys_res < 0) {
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close_noerr(fd);
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return false;
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}
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if (sys_res == 0)
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break;
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}
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if (close(fd) < 0)
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return false;
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else
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return true;
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}
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