Mar 10, 2011 · File descriptor to file is not a one to one mapping. I could open () the same file 4 times and get 4 different file descriptors. Each of which could be used (depending on the flags …

Dec 13, 2021 · There are two related objects: file descriptor and file description. People often confuse these two and think they are the same. File descriptor is an integer in your application …

Mar 11, 2010 · A file descriptor is a low-level integer "handle" used to identify an opened file (or socket, or whatever) at the kernel level, in Linux and other Unix-like systems. You pass …

Nov 5, 2015 · File descriptor is a positive integer index of a process's exlusive file descriptor table. The items of the file descriptor table are references to a system-wide open file description …

Nov 16, 2015 · When you open a file using the open function, you get a file descriptor that is always the lowest-numbered file descriptor not currently open for the process. This is usually 3 …

File descriptors 0, 1 and 2 are for stdin, stdout and stderr respectively. File descriptors 3, 4, .. 9 are for additional files. In order to use them, you need to open them first. For example: exec …

This answer is incorrect. This does NOT share a file descriptor like how a file descriptor is shared when doing a fork (). This opens a new file descriptor to the same file. 1. There are many kinds …

Jul 2, 2010 · I have a FILE *, returned by a call to fopen(). I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer?

Aug 13, 2010 · In case of file descriptor, User file descriptor table->file table and finally to inode table where it checks for the file type (regular file/char/block), and reads accordingly.

Nov 14, 2012 · File descriptors are numbers that "point" (or index) records in a process' own file descriptor table (one table for each process). Each record in the table has two values -- the …