Questions tagged [bsd]
BSD is a family of Unix-like operating systems, including FreeBSD, NetBSD and OpenBSD.
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Preprocessors in the BSD and GNU make build systems
Microsoft's nmake build system has a wonderful thing called a preprocessor.
For example, if I write the following in my make file
!IFDEF SOMEMACRO
target1 : dependent1
command1
terget2 : ...
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Question to multicast concept with BSD Socket APIs
I'm relatively new to topics such as socket programming and multicast messages. I'm trying to understand this concept better.
Let's say a PC is sending Multicast messages over address 224.0.0.0 on ...
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How to handle debug and release compiler flags in BSD make
Using BSD make, I wish to use different compiler flags for the debug and release versions of my program. The version of the program to build should be defined via a MODE variable. I would like to only ...
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Are There Always-Used and Kernel-Specific System Call For BSDs and Linux?
I am currently working on a project depends on detecting which OS the executable belong to.
I am only working on ELF executable format so I tried to use e_ident[EI_OSABI] value but doesn't give ...
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GNU sed to BSD sed for bash goto function
I make extensive use of a bash goto function that works through a GNU sed command. However, the sed command is not compatible with BSD sed. How would I need to change it to function correctly in an ...
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Is It bad for performance if a bunch of threads are in a blocking state?
Does the Linux or BSD kernel slow down if a program has a bunch of threads in a blocking io state, or is the performance deficit so negligible that it can be ignored. I am writing a server program ...
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How to test for BSD on GitHub actions?
I'm working on a project that needs to work on both Linux/BSD and every once in a while a change is made that causes a regression for BSD.
How can I test BSD on GitHub actions?
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If I have a file descriptor with an integer value above 1024, can select() still work on it?
The man page for select() states:
WARNING: select() can monitor only file descriptors numbers that are less than FD_SETSIZE (1024)—an unreasonably low limit for many modern applications.
This is ...
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How can I enable Uniflex BSD sockets to be BROADCAST?
I am restoring a Tektronix 4404 running Uniflex from 1986. The BSD socket implementation is done by Network Research Corporation; there are no docs. I have header files but there are no function ...
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Django project ModuleNotFoundError: No module named '_sqlite3'
OS bsd 13.2 on dedicated rental server
csh terminal
python3.9.17 system and venv
Django 4.2.2
wanting to learn django, I set up a venv and installed django there.
all good but at (django) pyweb@os3-...
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STDIN dup2 for OpenBSD/NetBSD
I have a child using dup2:
case OPGAME:
users[userid]->userNextEntry = redirectuser( userid, 0, USERMODULES[MENU] );
pid = fork();
if ( pid == -1 )
parseerror( SYSTEMERROR )...
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How to get a user name of the interactive login session that a process is running in?
From my macOS GUI app (written in Swift and C) how do I find out the interactive user name for the login session where my process is running?
I know that I can use getuid() and geteiud() to get the ...
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pthread_mutex_lock and an abandoned shared mutex
Pardon me if I'm asking the obvious. I come from years of programming under Windows.
Currently I'm working on a project that is running under macOS. (And I believe it uses Free BSD under the hood.)
So ...
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statfs on macOS doesn't give me full disk capacity. Why?
I'm trying to get the storage drive capacity and the free space on it from my macOS app.
I do the following:
struct statfs stStg;
if(statfs(".", &stStg) == 0)
{
uint64_t total_sz = ...
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What is the required lifetime of struct kevent passed into kevent changelist?
The signature of the kevent system call for OSX and BSD is as follows:
int
kevent(int kq, const struct kevent *changelist, int nchanges, struct kevent *eventlist,
int nevents, const ...
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