Linux file function-open

Linux file function-open an open file

Function Name: Open

Function prototype:

int Open (const char *pathname, int flags) int open (const char *pathname, int flags, mode_t mode)

function function: Open or create a file or device

Owning header file:

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

Return value: Successfully returned file descriptor, failed return-1

Parameter description:

Pathname: is the path to open the file/home/hello.c

Flags

-o_rdonly: Read-only Open

-o_wronly: Write-only Open

-o_rdwr: Read and write Open

-o_append: Append

-o_creat: Create a file when the file does not exist, you should use the mode parameter

Mode: is the right to use when using-o_creat to determine which file is created

Linux file function-open