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Python os.fpathconf() Method
Description:
This method returns system configuration information relevant to an open file.
This variable is very similar to unix system call fpathconf() and accept the similar arguments.
Syntax:
Parameters:
Here is the detail of parameters:
fd: This is the file descriptor for which system configuration information is to be returned.
name: This specifies the configuration value to retrieve; it may be a string which is the name of a defined system value; these names are specified in a number of standards (POSIX.1, Unix 95, Unix 98, and others). The names known to the host operating system are given in the os.pathconf_names dictionary.
Example:
#!/usr/bin/python
import os, sys
# Open a file
fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )
print "%s" % os.pathconf_names
# Now get maximum number of links to the file.
no = os.fpathconf(fd, 'PC_LINK_MAX')
print "Maximum number of links to the file. :%d" % no
# Now get maximum length of a filename
no = os.fpathconf(fd, 'PC_NAME_MAX')
print "Maximum length of a filename :%d" % no
# Close opened file
os.close( fd)
print "Closed the file successfully!!"
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This would produce following result:
{'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!!
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