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45 lines
806 B
45 lines
806 B
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#include <unistd.h>
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#include <errno.h>
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/* -1: not now (try later), -2: con closed, -3: unexpected error */
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int iobase_write(int fd, const void* buf, int len) {
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int res = write(fd, buf, len);
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if (res >= 0) return res;
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switch (errno) {
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case EAGAIN:
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#if EAGAIN != EWOULDBLOCK
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case EWOULDBLOCK:
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#endif
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case EINTR:
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return -1;
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break;
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case ECONNRESET:
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case EPIPE:
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case ETIMEDOUT:
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return -2;
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default:
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return -3;
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}
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}
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/* 0: eof, -1: not now (try later), -2: con closed, -3: unexpected error */
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int iobase_read(int fd, void* buf, int len) {
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int res = read(fd, buf, len);
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if (res >= 0) return res;
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switch (errno) {
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case EAGAIN:
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#if EAGAIN != EWOULDBLOCK
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case EWOULDBLOCK:
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#endif
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case EINTR:
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return -1;
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break;
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case ECONNRESET:
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case ETIMEDOUT:
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return -2;
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default:
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return -3;
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}
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}
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