kolibrios/programs/develop/libraries/newlib/reent/fstatr.c
Sergey Semyonov (Serge) 0a3f4b2193 Newlib source code
git-svn-id: svn://kolibrios.org@1693 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-11-07 13:42:29 +00:00

157 lines
2.8 KiB
C

/* Reentrant versions of fstat system call. This implementation just
calls the fstat system call. */
#include <reent.h>
#include <unistd.h>
#include <sys/stat.h>
#include <_syslist.h>
#include <errno.h>
#include <string.h>
/* Some targets provides their own versions of these functions. Those
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
#ifdef _REENT_ONLY
#ifndef REENTRANT_SYSCALLS_PROVIDED
#define REENTRANT_SYSCALLS_PROVIDED
#endif
#endif
#ifdef REENTRANT_SYSCALLS_PROVIDED
int _dummy_fstat_syscalls = 1;
#else
/* We use the errno variable used by the system dependent layer. */
/*
FUNCTION
<<_fstat_r>>---Reentrant version of fstat
INDEX
_fstat_r
ANSI_SYNOPSIS
#include <reent.h>
int _fstat_r(struct _reent *<[ptr]>,
int <[fd]>, struct stat *<[pstat]>);
TRAD_SYNOPSIS
#include <reent.h>
int _fstat_r(<[ptr]>, <[fd]>, <[pstat]>)
struct _reent *<[ptr]>;
int <[fd]>;
struct stat *<[pstat]>;
DESCRIPTION
This is a reentrant version of <<fstat>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
#pragma pack(push, 1)
typedef struct
{
char sec;
char min;
char hour;
char rsv;
}detime_t;
typedef struct
{
char day;
char month;
short year;
}dedate_t;
typedef struct
{
unsigned attr;
unsigned flags;
union
{
detime_t ctime;
unsigned cr_time;
};
union
{
dedate_t cdate;
unsigned cr_date;
};
union
{
detime_t atime;
unsigned acc_time;
};
union
{
dedate_t adate;
unsigned acc_date;
};
union
{
detime_t mtime;
unsigned mod_time;
};
union
{
dedate_t mdate;
unsigned mod_date;
};
unsigned size;
unsigned size_high;
} FILEINFO;
#pragma pack(pop)
extern unsigned __NFiles;
#define __handle_check( __h, __r ) \
if( (__h) < 0 || (__h) > __NFiles ) { \
ptr->_errno = EBADF ; \
return( __r ); \
}
int
_fstat_r (ptr, fd, pstat)
struct _reent *ptr;
int fd;
struct stat *pstat;
{
FILEINFO info;
int ret;
__file_handle *fh;
__handle_check( fd, -1 );
if (fd < 3)
{
pstat->st_mode = S_IFCHR;
pstat->st_blksize = 0;
return 0;
}
fh = (__file_handle*) __getOSHandle( fd );
get_fileinfo(fh->name, &info);
memset (pstat, 0, sizeof (* pstat));
pstat->st_mode = S_IFREG;
pstat->st_blksize = 4096;
pstat->st_size = info.size;
return 0;
}
int
_DEFUN (fstat, (fd, pstat),
int fd _AND
struct stat *pstat)
{
return _fstat_r (_REENT, fd, pstat);
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */