understanding stat module names

**Claudio Grondi** · Jan 19 '06, 12:05 AM

Re: understanding stat module names

David Bear wrote:[color=blue]
> I'm trying to use os.chmod and am refered to the stat module.
>
> Is there are explanation of:
> * S_ISUID
> * S_ISGID
> * S_ENFMT
> * S_ISVTX
> * S_IREAD
> * S_IWRITE
> * S_IEXEC
> * S_IRWXU
> * S_IRUSR
> * S_IWUSR
> * S_IXUSR
> * S_IRWXG
> * S_IRGRP
> * S_IWGRP
> * S_IXGRP
> * S_IRWXO
> * S_IROTH
> * S_IWOTH
> * S_IXOTH
>
> this isn't much help:
>
> dir(stat)
> ['ST_ATIME', 'ST_CTIME', 'ST_DEV', 'ST_GID', 'ST_INO', 'ST_MODE',
> 'ST_MTIME', 'ST_NLINK', 'ST_SIZE', 'ST_UID', 'S_ENFMT', 'S_IEXEC',
> 'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK', 'S_IFMT', 'S_IFREG',
> 'S_IFSOCK', 'S_IMODE', 'S_IREAD', 'S_IRGRP', 'S_IROTH', 'S_IRUSR',
> 'S_IRWXG', 'S_IRWXO', 'S_IRWXU', 'S_ISBLK', 'S_ISCHR', 'S_ISDIR',
> 'S_ISFIFO', 'S_ISGID', 'S_ISLNK', 'S_ISREG', 'S_ISSOCK', 'S_ISUID',
> 'S_ISVTX', 'S_IWGRP', 'S_IWOTH', 'S_IWRITE', 'S_IWUSR', 'S_IXGRP',
> 'S_IXOTH', 'S_IXUSR', '__builtins__', '__doc__', '__file__', '__name__']
>[color=green][color=darkred]
>>>>print stat.__doc__[/color][/color]
>
> Constants/functions for interpreting results of os.stat() and os.lstat().
>
> Suggested usage: from stat import *
>
>
>
>[/color]
from stat.h of Microsoft Visual C++ .NET 2003:

#define _S_IFMT 0170000 /* file type mask */
#define _S_IFDIR 0040000 /* directory */
#define _S_IFCHR 0020000 /* character special */
#define _S_IFIFO 0010000 /* pipe */
#define _S_IFREG 0100000 /* regular */
#define _S_IREAD 0000400 /* read permission, owner */
#define _S_IWRITE 0000200 /* write permission, owner */
#define _S_IEXEC 0000100 /* execute/search permission,
owner */
#define S_IFMT _S_IFMT
#define S_IFDIR _S_IFDIR
#define S_IFCHR _S_IFCHR
#define S_IFREG _S_IFREG
#define S_IREAD _S_IREAD
#define S_IWRITE _S_IWRITE
#define S_IEXEC _S_IEXEC

struct stat {
_dev_t st_dev;
_ino_t st_ino;
unsigned short st_mode;
short st_nlink;
short st_uid;
short st_gid;
_dev_t st_rdev;
_off_t st_size;
time_t st_atime;
time_t st_mtime;
time_t st_ctime;
};

From MSDN Help:

The _fstat function obtains information about the open file associated
with fd and stores it in the structure pointed to by buffer. The _stat
structure, defined in SYS\STAT.H, contains the following fields:

st_atime
Time of last file access.
st_ctime
Time of creation of file.
st_dev
If a device, fd; otherwise 0.
st_mode
Bit mask for file-mode information. The _S_IFCHR bit is set if fd refers
to a device. The _S_IFREG bit is set if fd refers to an ordinary file.
The read/write bits are set according to the file's permission mode.
_S_IFCHR and other constants are defined in SYS\STAT.H.
st_mtime
Time of last modification of file.
st_nlink
Always 1 on non-NTFS file systems.
st_rdev
If a device, fd; otherwise 0.
st_size
Size of the file in bytes.

Probably googling for the constants will show up some more useful
information , too.

Hope this helps.

Claudio

**Marius Gedminas** · Jan 19 '06, 12:45 AM

Re: understanding stat module names

David Bear wrote:[color=blue]
> I'm trying to use os.chmod and am refered to the stat module.
>
> Is there are explanation of:
> * S_ISUID[/color]
....[color=blue]
> * S_IXOTH[/color]

These come from the POSIX standard. See

http://www.opengroup.org/onlinepubs/007908799/xsh/sysstat.h.html

HTH,
Marius Gedminas

**David Bear** · Jan 19 '06, 01:35 AM

Re: understanding stat module names

Claudio Grondi wrote:
[color=blue]
> David Bear wrote:[color=green]
>> I'm trying to use os.chmod and am refered to the stat module.
>>
>> Is there are explanation of:
>> * S_ISUID
>> * S_ISGID
>> * S_ENFMT
>> * S_ISVTX
>> * S_IREAD
>> * S_IWRITE
>> * S_IEXEC
>> * S_IRWXU
>> * S_IRUSR
>> * S_IWUSR
>> * S_IXUSR
>> * S_IRWXG
>> * S_IRGRP
>> * S_IWGRP
>> * S_IXGRP
>> * S_IRWXO
>> * S_IROTH
>> * S_IWOTH
>> * S_IXOTH
>>
>> this isn't much help:
>>
>> dir(stat)
>> ['ST_ATIME', 'ST_CTIME', 'ST_DEV', 'ST_GID', 'ST_INO', 'ST_MODE',
>> 'ST_MTIME', 'ST_NLINK', 'ST_SIZE', 'ST_UID', 'S_ENFMT', 'S_IEXEC',
>> 'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK', 'S_IFMT',
>> 'S_IFREG', 'S_IFSOCK', 'S_IMODE', 'S_IREAD', 'S_IRGRP', 'S_IROTH',
>> 'S_IRUSR', 'S_IRWXG', 'S_IRWXO', 'S_IRWXU', 'S_ISBLK', 'S_ISCHR',
>> 'S_ISDIR', 'S_ISFIFO', 'S_ISGID', 'S_ISLNK', 'S_ISREG', 'S_ISSOCK',
>> 'S_ISUID', 'S_ISVTX', 'S_IWGRP', 'S_IWOTH', 'S_IWRITE', 'S_IWUSR',
>> 'S_IXGRP', 'S_IXOTH', 'S_IXUSR', '__builtins__', '__doc__', '__file__',
>> '__name__']
>>[color=darkred]
>>>>>print stat.__doc__[/color]
>>
>> Constants/functions for interpreting results of os.stat() and os.lstat().
>>
>> Suggested usage: from stat import *
>>
>>
>>
>>[/color]
> from stat.h of Microsoft Visual C++ .NET 2003:
>
> #define _S_IFMT 0170000 /* file type mask */
> #define _S_IFDIR 0040000 /* directory */
> #define _S_IFCHR 0020000 /* character special */
> #define _S_IFIFO 0010000 /* pipe */
> #define _S_IFREG 0100000 /* regular */
> #define _S_IREAD 0000400 /* read permission, owner */
> #define _S_IWRITE 0000200 /* write permission, owner */
> #define _S_IEXEC 0000100 /* execute/search permission,
> owner */
> #define S_IFMT _S_IFMT
> #define S_IFDIR _S_IFDIR
> #define S_IFCHR _S_IFCHR
> #define S_IFREG _S_IFREG
> #define S_IREAD _S_IREAD
> #define S_IWRITE _S_IWRITE
> #define S_IEXEC _S_IEXEC
>
> struct stat {
> _dev_t st_dev;
> _ino_t st_ino;
> unsigned short st_mode;
> short st_nlink;
> short st_uid;
> short st_gid;
> _dev_t st_rdev;
> _off_t st_size;
> time_t st_atime;
> time_t st_mtime;
> time_t st_ctime;
> };
>
> From MSDN Help:
>
> The _fstat function obtains information about the open file associated
> with fd and stores it in the structure pointed to by buffer. The _stat
> structure, defined in SYS\STAT.H, contains the following fields:
>
> st_atime
> Time of last file access.
> st_ctime
> Time of creation of file.
> st_dev
> If a device, fd; otherwise 0.
> st_mode
> Bit mask for file-mode information. The _S_IFCHR bit is set if fd refers
> to a device. The _S_IFREG bit is set if fd refers to an ordinary file.
> The read/write bits are set according to the file's permission mode.
> _S_IFCHR and other constants are defined in SYS\STAT.H.
> st_mtime
> Time of last modification of file.
> st_nlink
> Always 1 on non-NTFS file systems.
> st_rdev
> If a device, fd; otherwise 0.
> st_size
> Size of the file in bytes.
>
> Probably googling for the constants will show up some more useful
> information , too.
>
> Hope this helps.
>
> Claudio[/color]

Thnks for the info. I didn't even think I would have to look in a unix/c ref
manual. This was usefull.

http://www.opengroup.org/onlinepubs/007908799/xsh/sysstat.h.html

--
David Bear
-- let me buy your intellectual property, I want to own your thoughts --

understanding stat module names

understanding stat module names

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