/usr/include/gd_io.h is in libgd2-xpm-dev 2.0.36~rc1~dfsg-6ubuntu2.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | #ifdef __cplusplus
extern "C" {
#endif
#ifndef GD_IO_H
#define GD_IO_H 1
#include <stdio.h>
#ifdef VMS
#define Putchar gdPutchar
#endif
typedef struct gdIOCtx
{
int (*getC) (struct gdIOCtx *);
int (*getBuf) (struct gdIOCtx *, void *, int);
void (*putC) (struct gdIOCtx *, int);
int (*putBuf) (struct gdIOCtx *, const void *, int);
/* seek must return 1 on SUCCESS, 0 on FAILURE. Unlike fseek! */
int (*seek) (struct gdIOCtx *, const int);
long (*tell) (struct gdIOCtx *);
void (*gd_free) (struct gdIOCtx *);
}
gdIOCtx;
typedef struct gdIOCtx *gdIOCtxPtr;
void Putword (int w, gdIOCtx * ctx);
void Putchar (int c, gdIOCtx * ctx);
void gdPutC (const unsigned char c, gdIOCtx * ctx);
int gdPutBuf (const void *, int, gdIOCtx *);
void gdPutWord (int w, gdIOCtx * ctx);
void gdPutInt (int w, gdIOCtx * ctx);
int gdGetC (gdIOCtx * ctx);
int gdGetBuf (void *, int, gdIOCtx *);
int gdGetByte (int *result, gdIOCtx * ctx);
int gdGetWord (int *result, gdIOCtx * ctx);
int gdGetInt (int *result, gdIOCtx * ctx);
int gdSeek (gdIOCtx * ctx, const int offset);
long gdTell (gdIOCtx * ctx);
#endif
#ifdef __cplusplus
}
#endif
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