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