52 lines
885 B
C
52 lines
885 B
C
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/unistd.h>
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#include <sys/kos_io.h>
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#include "glue.h"
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#include "io.h"
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_off_t
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_DEFUN (lseek, (fd, pos, whence),
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int fd _AND
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_off_t pos _AND
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int whence)
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{
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fileinfo_t info;
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__io_handle *ioh;
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_off_t ret;
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if( (fd < 0) || (fd >=64) )
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{
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errno = EBADF;
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return (-1);
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};
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ioh = &__io_tab[fd];
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switch(whence)
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{
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case SEEK_SET:
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ret = pos;
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break;
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case SEEK_CUR:
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ret = ioh->offset + pos;
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break;
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case SEEK_END:
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{
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get_fileinfo(ioh->name, &info);
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ret = pos + info.size;
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break;
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}
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default:
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errno = EINVAL;
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return (-1);
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};
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ioh->offset = ret;
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return( ret );
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};
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