48e74f46fc
which can be emulated using qemu (for, hopefully, a test suite). Currently it generates images which won't run because there's no RAM.
38 lines
560 B
C
38 lines
560 B
C
#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include "libsys.h"
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int read(int fd, void* buffer, size_t count)
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{
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char i;
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/* We're only allowed to read from fd 0, 1 or 2. */
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if ((fd < 0) || (fd > 2))
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{
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errno = EBADF;
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return -1;
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}
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/* Empty buffer? */
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if (count == 0)
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return 0;
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/* Read one byte. */
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i = _sys_rawread();
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#if 0
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if ((i == '\r') && !(_sys_ttyflags & RAW))
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i = '\n';
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if (_sys_ttyflags & ECHO)
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_sys_write_tty(i);
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#endif
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if (i == '\r')
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i = '\n';
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_sys_write_tty(i);
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*(char*)buffer = i;
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return 1;
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}
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