61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
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#include <fcntl.h>
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#include <luna.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern "C"
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{
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int fclose(FILE* stream)
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{
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int status = close(stream->fd);
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free(stream); // We do not want to leak memory. man fclose(3) says that whether fclose() fails or not, any
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// further operation on the stream results in undefined behavior. So we are free to free the
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// stream.
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return status;
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}
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int fflush(FILE*)
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{
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return 0; // FIXME: Implement buffered IO.
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}
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FILE* fopen(const char* pathname, const char*)
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{
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int fd = open(pathname, O_RDONLY); // FIXME: Use the mode string.
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if (fd < 0) { return 0; }
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FILE* stream = (FILE*)malloc(sizeof(FILE));
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stream->fd = fd;
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return stream;
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}
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size_t fread(void* buf, size_t size, size_t nmemb, FILE* stream)
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{
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ssize_t status = read(stream->fd, buf, size * nmemb);
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if (status < 0)
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return 0; // FIXME: The manual says that fread() does not differentiate between EOF and error, and that
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// ferror() and feof() should be called to determine such. So right now, we just mask the error,
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// until that is implemented.
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return (size_t)status;
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}
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int fseek(FILE*, long, int)
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{
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NOT_IMPLEMENTED("fseek");
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}
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long ftell(FILE*)
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{
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NOT_IMPLEMENTED("ftell");
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}
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size_t fwrite(const void*, size_t, size_t, FILE*)
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{
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NOT_IMPLEMENTED("fwrite");
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}
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void setbuf(FILE*, char*)
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{
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NOT_IMPLEMENTED("setbuf");
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}
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}
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