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mirror of https://sourceware.org/git/glibc.git synced 2025-08-01 10:06:57 +03:00

y2038: Use a common definition for stat

Instead of replicate the same definitions from struct_stat_time64.h
on the multiple struct_stat.h, use a common header which is included
when required (struct_stat_time64_helper.h).  The 64-bit time support
is added only for LFS support.

The __USE_TIME_BITS64 is not defined internally yet, although the
internal header is used when building the 64-bit stat implementations.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Lukasz Majewski
2020-10-15 09:30:59 +02:00
committed by Adhemerval Zanella
parent 746ef78afe
commit 4e8521333b
10 changed files with 452 additions and 375 deletions

View File

@ -29,28 +29,31 @@
/* Structure describing file characteristics. */
struct stat
{
# ifdef __USE_TIME_BITS64
# include <bits/struct_stat_time64_helper.h>
# else
unsigned long int st_dev;
long int st_pad1[3];
#ifndef __USE_FILE_OFFSET64
# ifndef __USE_FILE_OFFSET64
__ino_t st_ino; /* File serial number. */
#else
# else
__ino64_t st_ino; /* File serial number. */
#endif
# endif
__mode_t st_mode; /* File mode. */
__nlink_t st_nlink; /* Link count. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
unsigned long int st_rdev; /* Device number, if device. */
#ifndef __USE_FILE_OFFSET64
# ifndef __USE_FILE_OFFSET64
long int st_pad2[2];
__off_t st_size; /* Size of file, in bytes. */
/* SVR4 added this extra long to allow for expansion of off_t. */
long int st_pad3;
#else
# else
long int st_pad2[3];
__off64_t st_size; /* Size of file, in bytes. */
#endif
#ifdef __USE_XOPEN2K8
# endif
# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@ -60,30 +63,34 @@ struct stat
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
#else
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
#endif
# endif
__blksize_t st_blksize; /* Optimal block size for I/O. */
#ifndef __USE_FILE_OFFSET64
# ifndef __USE_FILE_OFFSET64
__blkcnt_t st_blocks; /* Number of 512-byte blocks allocated. */
#else
# else
long int st_pad4;
__blkcnt64_t st_blocks; /* Number of 512-byte blocks allocated. */
#endif
# endif
long int st_pad5[14];
# endif /* __USE_TIME_BITS64 */
};
#ifdef __USE_LARGEFILE64
# ifdef __USE_LARGEFILE64
struct stat64
{
# ifdef __USE_TIME_BITS64
# include <bits/struct_stat_time64_helper.h>
# else
unsigned long int st_dev;
long int st_pad1[3];
__ino64_t st_ino; /* File serial number. */
@ -94,6 +101,56 @@ struct stat64
unsigned long int st_rdev; /* Device number, if device. */
long int st_pad2[3];
__off64_t st_size; /* Size of file, in bytes. */
# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
# endif
__blksize_t st_blksize; /* Optimal block size for I/O. */
long int st_pad3;
__blkcnt64_t st_blocks; /* Number of 512-byte blocks allocated. */
long int st_pad4[14];
# endif /* __USE_TIME_BITS64 */
};
# endif /* __USE_LARGEFILE64 */
#else /* _MIPS_SIM != _ABIO32 */
struct stat
{
__dev_t st_dev;
int st_pad1[3]; /* Reserved for st_dev expansion */
# ifndef __USE_FILE_OFFSET64
__ino_t st_ino;
# else
__ino64_t st_ino;
# endif
__mode_t st_mode;
__nlink_t st_nlink;
__uid_t st_uid;
__gid_t st_gid;
__dev_t st_rdev;
# if !defined __USE_FILE_OFFSET64
unsigned int st_pad2[2]; /* Reserved for st_rdev expansion */
__off_t st_size;
int st_pad3;
# else
unsigned int st_pad2[3]; /* Reserved for st_rdev expansion */
__off64_t st_size;
# endif
# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
@ -104,6 +161,9 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
@ -112,63 +172,13 @@ struct stat64
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
# endif
__blksize_t st_blksize; /* Optimal block size for I/O. */
long int st_pad3;
__blkcnt64_t st_blocks; /* Number of 512-byte blocks allocated. */
long int st_pad4[14];
};
#endif
#else
struct stat
{
__dev_t st_dev;
int st_pad1[3]; /* Reserved for st_dev expansion */
#ifndef __USE_FILE_OFFSET64
__ino_t st_ino;
#else
__ino64_t st_ino;
#endif
__mode_t st_mode;
__nlink_t st_nlink;
__uid_t st_uid;
__gid_t st_gid;
__dev_t st_rdev;
#if !defined __USE_FILE_OFFSET64
unsigned int st_pad2[2]; /* Reserved for st_rdev expansion */
__off_t st_size;
int st_pad3;
#else
unsigned int st_pad2[3]; /* Reserved for st_rdev expansion */
__off64_t st_size;
#endif
#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
#endif
__blksize_t st_blksize;
unsigned int st_pad4;
#ifndef __USE_FILE_OFFSET64
# ifndef __USE_FILE_OFFSET64
__blkcnt_t st_blocks;
#else
# else
__blkcnt64_t st_blocks;
#endif
# endif
int st_pad5[14];
};
@ -185,7 +195,7 @@ struct stat64
__dev_t st_rdev;
unsigned int st_pad2[3]; /* Reserved for st_rdev expansion */
__off64_t st_size;
# ifdef __USE_XOPEN2K8
# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@ -195,20 +205,21 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# else
# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
# endif
# endif
__blksize_t st_blksize;
unsigned int st_pad3;
__blkcnt64_t st_blocks;
int st_pad4[14];
};
#endif
#endif
/* Tell code we have these members. */