2.4 Homework Opening a File Below are several di erent usages of the open0 syste

Question

2.4 Homework Opening a File Below are several di erent usages of the open0 system call. Which of these possibilities does ALL of the following Opens a file for both reading AND writing. Creates a new file if it doesn't already exist. Deletes the contents of any file already in place with the same name, overwriting it with this new file. Grants the user read and write permissions. Grants only read permissions to both group and all other users Note the because of a hopefully soon-to-be-fixed bug in TopHat, the underscores in the answers below have been replaced with hyphens (and, all hyphens below are underscores). A open (new FilePath, O-RDWRIO-CREATIO TRUNC, 0644) B open(newFilePath, O RDWRIO-TRUNC, S-IRUSR I S-IWUSR), C open (newFilePath, O RDWRIO CREAT, 0622), D open (newFilePath, O RDWRIOCREATIO TRUNC, 0622) Unanswered Submit

Explanation / Answer

open(newFilePath, O_RDWR|O_CREAT|O_TRUNC, 0644);
   //Opens a file for both reading and writing.
   //Creates a file if it doesn't exist.
   //Deletes the contents of any file already in place.
   //Grants the user read and write permissions.
   //Grants only read permissions to both group and other users.
And the other options will not satisfy all the requirements.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.