diff options
Diffstat (limited to 'usr/src/lib/libc/inc/file64.h')
| -rw-r--r-- | usr/src/lib/libc/inc/file64.h | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/usr/src/lib/libc/inc/file64.h b/usr/src/lib/libc/inc/file64.h index 40504d35ec..1bbc98e2bc 100644 --- a/usr/src/lib/libc/inc/file64.h +++ b/usr/src/lib/libc/inc/file64.h @@ -25,6 +25,10 @@ */ /* + * Copyright 2020 Robert Mustacchi + */ + +/* * This is the header where the internal to libc definition of the FILE * structure is defined. The exrernal defintion defines the FILE structure * as an array of longs. This prevents customers from writing code that @@ -41,8 +45,6 @@ #ifndef _FILE64_H #define _FILE64_H -#pragma ident "%Z%%M% %I% %E% SMI" - #include <synch.h> #include <stdio_tag.h> #include <wchar_impl.h> @@ -58,8 +60,25 @@ typedef __mbstate_t mbstate_t; #define rmutex_t mutex_t +typedef ssize_t (*fread_t)(__FILE *, char *, size_t); +typedef ssize_t (*fwrite_t)(__FILE *, const char *, size_t); +typedef off_t (*fseek_t)(__FILE *, off_t, int); +typedef int (*fclose_t)(__FILE *); + +typedef struct { + fread_t std_read; + fwrite_t std_write; + fseek_t std_seek; + fclose_t std_close; + void *std_data; +} stdio_ops_t; + #ifdef _LP64 +/* + * This structure cannot grow beyond its current size of 128 bytes. See the file + * lib/libc/port/stdio/README.design for more information. + */ struct __FILE_TAG { unsigned char *_ptr; /* next character from/to here in buffer */ unsigned char *_base; /* the buffer */ @@ -69,7 +88,8 @@ struct __FILE_TAG { unsigned int _flag; /* the state of the stream */ rmutex_t _lock; /* lock for this structure */ mbstate_t _state; /* mbstate_t */ - char __fill[32]; /* filler to bring size to 128 bytes */ + stdio_ops_t *_ops; /* Alternate impl ops */ + char __fill[24]; /* filler to bring size to 128 bytes */ }; #else @@ -83,6 +103,7 @@ struct xFILEdata { rmutex_t _lock; /* lock for this structure */ mbstate_t _state; /* mbstate_t */ int _altfd; /* alternate fd if > 255 */ + stdio_ops_t *_ops; /* Alternate impl ops */ }; #define XFILEINITIALIZER { 0, NULL, RECURSIVEMUTEX, DEFAULTMBSTATE } |