Python Tutorial ( PDFDrive )

{'PC_MAX_INPUT': 2, 'PC_VDISABLE': 8, 'PC_SYNC_IO': 9,
'PC_SOCK_MAXBUF': 12, 'PC_NAME_MAX': 3, 'PC_MAX_CANON': 1,
'PC_PRIO_IO': 11, 'PC_CHOWN_RESTRICTED': 6, 'PC_ASYNC_IO': 10,
'PC_NO_TRUNC': 7, 'PC_FILESIZEBITS': 13, 'PC_LINK_MAX': 0,
'PC_PIPE_BUF': 5, 'PC_PATH_MAX': 4}
Maximum number of links to the file. :127
Maximum length of a filename :255
Closed the file successfully!!
os.fstat(fd)
Description
The method fstat() returns information about a file associated with the fd. Here is the structure returned by fstat
method:
• st_dev: ID of device containing file
• st_ino: inode number
• st_mode: protection
• st_nlink: number of hard links
• st_uid: user ID of owner
• st_gid: group ID of owner
• st_rdev: device ID (if special file)
• st_size: total size, in bytes
• st_blksize: blocksize for filesystem I/O
• st_blocks: number of blocks allocated
• st_atime: time of last access
• st_mtime: time of last modification
• st_ctime: time of last status change
Syntax
Following is the syntax for fstat() method:
os.fstat(fd)
Parameters
• fd -- This is the file descriptor for which system information is to be returned.
Return Value
This method returns information about a file associated with the fd.
Example
The following example shows the usage of chdir() method.
#!/usr/bin/python
import os, sys
# Open a file
fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )
# Now get the touple
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