Answered: ty parameter list c. Declare a variable…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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How would I write these functions using C?

Write function fileAttributes to do the following
a. Return type void
b. Empty parameter list
c. Declare a variable of data type struct stat to store the attribute
structure (i.e. statBuff)
d. Declare a variable of data type int to store an error code (i.e. err)
e. Declare a variable of data type struct dirent as a pointer (i.e. de)
f. Declare a variable of data type DIR as a pointer set equal to function
call opendir() passing explicit text “.” as an argument to indicate the
current directory (i.e. dr)
g. If the DIR variable is equal to NULL do the following
i. Output to the console that "Could not open current directory"
h. While reading the directory contents is NOT NULL do the following
i. Set variable err equal to function call stat() passing as
arguments
1. the d_name of the directory entry
2. struct stat statBuff
ii. Evaluate if variable err is equal to -1 (i.e. indicating the file
could not be accessed)
1. Output to the console explicit text
a. “Error in stat”
b. “Press `Enter' to continue . . .”
c. Call function getchar()
iii. Call function printAttributes() passing as arguments
1. d_name of the directory entry
2. struct stat statBuff

7. Write function printAttributes() to do the following
a. Return type void
b. Parameter list includes
i. char name[]
ii. struct stat statBuff
c. Declare a variable of data type time_t (i.e. t)
d. Declare an array of data type char, size 100, to store the time in a
string (i.e. timeStr)
e. Output the file name

f. Output the file device id
g. Output the file serial number
h. Output the file user id
i. Output the file group id
j. Output the file mode
i. Evaluate the file mode for owner permissions
1. Read
2. Write
3. Execute
ii. Evaluate the file mode for group permissions
1. Read
2. Write
3. Execute
iii. Evaluate the file mode for other permissions
1. Read
2. Write
3. Execute
k. Output the file creation date
l. Output the file last modification date
m. Output the file last accessed date
n. Output the file size

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