Opening and Closing files: Using “Open” function, a process can open an existing file or generates a new file. This function is used to converts a filename to a file descriptor and returns the result as a descriptor number. The descriptor returned is always the lowest descriptor that is not presently open in the process. Each process in the LINUX begins life with three open files. Descriptor 0 – standard input. Descriptor 1 – standard output. Descriptor 2 – standard error. The “open” function consists of three arguments. That is “Open(filename, flags, mode)”. The argument “filename” defines the name of the given file. The argument “flags” represents how the process plans to access the file. Some flags names are as follows. O_RDONLY – it means reading only. O_WRONLY – it means writing only. O_RDWR – it means reading and writing. The “mode” argument identifies the access permission bits of new files. Example: The example for open an existing file for reading is shown below: sample1 = Open("foo1.txt", O_RDONLY, 0); From the above “open” function, The filename is “foo1.txt”. Flag name is “O_RDONLY”. Mode is “0”.

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Answer 1

Question

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

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Answer 2

Question

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

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Answer 3

Question

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

Expert Solution & Answer

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See solution

Answer 4

Question

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

Answer 6

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

Answer 7

Chapter 10.3, Problem 10.1PP

Program Plan Intro

Opening and Closing files:

Using “Open” function, a process can open an existing file or generates a new file.

This function is used to converts a filename to a file descriptor and returns the result as a descriptor number.

The descriptor returned is always the lowest descriptor that is not presently open in the process.

Each process in the LINUX begins life with three open files.

Descriptor 0 – standard input.

Descriptor 1 – standard output.

Descriptor 2 – standard error.

The “open” function consists of three arguments. That is “Open(filename, flags, mode)”.

The argument “filename” defines the name of the given file.

The argument “flags” represents how the process plans to access the file. Some flags names are as follows.

O_RDONLY – it means reading only.

O_WRONLY – it means writing only.

O_RDWR – it means reading and writing.

The “mode” argument identifies the access permission bits of new files.

Example:

The example for open an existing file for reading is shown below:

sample1 = Open("foo1.txt", O_RDONLY, 0);

From the above “open” function,

The filename is “foo1.txt”.

Flag name is “O_RDONLY”.

Mode is “0”.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 10.3 - Prob. 10.1PP Ch. 10.8 - Practice Problem 10.2 (solution page 915) Suppose...Ch. 10.8 - Practice Problem 10.3 (solution page 915) As...Ch. 10.9 - Prob. 10.4PP Ch. 10.9 - Practice Problem 10.5 (solution page 916) Assuming...Ch. 10 - Prob. 10.6HW Ch. 10 - Prob. 10.7HW Ch. 10 - Write a version of the statcheck program in Figure...Ch. 10 - Consider the following invocation of the...Ch. 10 - Prob. 10.10HW

Solution Summary: The author explains how the LINUX "Open" function converts a filename to file descriptor and returns the result as the lowest one that is not currently open.

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