Corto Maltese
Neo Member
Try https://github.com/karan/projects
There is a lot of projects to challenge yourself here.
If you up to we can try together some which are harder.
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Programming |OT| C is better than C++! No, C++ is better than C
- Thread starter Kikarian
- Start date
Try https://github.com/karan/projects
There is a lot of projects to challenge yourself here.
If you up to we can try together some which are harder.
Speaking of converting recursive functions, it's only possible to use trampolines if the function itself is tail recursive right? Like I've never seen an example of one that wasn't and I couldn't figure it out for a simple flatten function which lead me to believe this was the case.
Thank you! I'll definitely look into this.
Well, trampoline use on tail-recursive functions is trivial, so it's normal that examples are based on this. But you can use trampolines for more things than just avoiding the risk there's no TRE.
I'd say that since you can transform any recursive function into a tail-recursive function, you basically can use trampoline for everything. But it will require sometimes a LOT of rewriting, and the result may not be efficient.
cpp_is_king
Member
HLA is not even a real programming language. It's a higher level version of assembly created in order to teach real assembly. Is your ultimate goal actually to learn assembly?
Yes my intent is to learn. I worded that wrong. Im a little lost on it.
My original strategy was to write something in C then write the equivalent assembly version, but goddamn. It aint easy, so hla.
Brawly Likes to Brawl
Member
I have a tech blog, and I had an idea of writing a series of articles explaining the basic history of programming and advanced usage of PCs, starting with one about about the Command Line Interface's history. Can anybody here recommend some good sources of information of that?
cpp_is_king
Member
Assembly is just kind of a mindfuck when you're first learning it. It's like saying "well duh, of course 3 + 7 is 10" and then someone asking you "yes, but why? Can you derive it from first principles?" and you don't even know where to begin because how can you get any more basic?
I heard some people like this book, but I haven't read it so I can't really say for sure.
Best advice I can give you is to just not think about translating C to assembly and vice versa. Think about it as a completely different beast. Just learn the instruction set, and learn how to address memory, learn about stack frames, and try to write trivial programs that, for example, loop from 1 to 10 printing each number on a new line, etc. Things like that.
Eventually when you start becoming more familiar, compile some simple C programs and then disassemble them in an advanced debugger that has mixed C / assembly source listings, and see if you can make sense of why each instruction was converted the way it does, or at least convince yourself that the assembly does in fact represent the C code shown.
That's strange...
Maybe it's because I've begun with really early languages (such as Basic 1.0), but Assembly has always seemed the most natural thing to me, and the easiest language to learn.
Of course, there's plently of strange things if you want to optimize things (like the LEA dirty tricks on x86 to do fast multiplications), but still...
Spoiled Milk
Banned
I don't think assembly has anything to do with 3 + 7 being 10. Assembly is a shorthand for cpu opcodes and addition is still a primitive.
I agree assembly was onerous but I dunno if that example was good
I agree assembly was onerous but I dunno if that example was good
cpp_is_king
Member
I don't think assembly has anything to do with 3 + 7 being 10. Assembly is a shorthand for cpu opcodes and addition is still a primitive.
I agree assembly was onerous but I dunno if that example was good
idk, the analogy works well for me. It's hard to turn "3+7 = 10" into a rigorous sequence of steps involving the peano axioms, just like it's hard to turn "while (x > 5) { printf("%d", x); }" into a series of 10 or 15 assembly language instructions that are detached from the bigger picture.
In a way, assembly language is like the "axioms" of machine code (i.e. the lowest level operations you can perform), and you have to string together long sequences of them to get results that you can reason about at a high level.
I'm not sure it's that great an example, because
Code:
loop : cmp %eax, $5
jg endloop
push %eax
push formatstring
call printf
add %esp, $4
pop %eax
jmp loop
endloop :cpp_is_king
Member
Obviously it's a basic translation, but pointers are pretty simple too right? And yet somehow they're like the bane of CS 101 students' existance. Arithmetic in N is simple once you understand groups and rings
PS:
AT&T syntax is evil
Well... To be honest, it took me a lot of time to begin to understand why pointers seem difficult to many.
But after discussing with many, the ones that have troubles with pointers are the one that started algorithmics with some high-level languages that completely hide how things work.
I've encounter students that were killers in assembly and pointers and couldn't write ten lines in Java... but they avoided HL programming at first.
I really don't mind... I'm curious about this, though cpp_is_king
Member
It's not based in any kind of rationality. I just hate it. Like, WTF is this shit?
Code:
leal (%eax,%eax,2), %eaxpercents everywhere hurting my eyes, a bunch of commas that provide no insight into what's going on. And then this:
Code:
leal 8(,%eax,4), %eaxI don't even know where to start with this? In intel syntax it's almost a mirror image of the previous example, but here it looks like a completely different construct. Nonsensical.
Corto Maltese
Neo Member
This may be a silly question but i'm gonna shoot.
For my assignment for academy i have to create database and fill it with some data and then write lot of queries. But i manage to fail at start..
While i create it in a query(its T-SQL by the way in SSMS) I get this error :
Directory lookup for the file "C:\Users\user\Desktop\TSQL\DB_ASSIG1.mdf" failed with the operating system error 5(Access is denied.).
I googled it and someone mentioned that i should run it by administrator, i did it and nothing changed.
Any tips?
For my assignment for academy i have to create database and fill it with some data and then write lot of queries. But i manage to fail at start..
While i create it in a query(its T-SQL by the way in SSMS) I get this error :
Directory lookup for the file "C:\Users\user\Desktop\TSQL\DB_ASSIG1.mdf" failed with the operating system error 5(Access is denied.).
I googled it and someone mentioned that i should run it by administrator, i did it and nothing changed.
Any tips?
Make sure the file isn't read only and that your user has permissions to it. Also make sure that no other program (like a file scanner or whatever) has an open handle to it.
Usually SMSS creates databases in it's own directory. If you are using a backup of an existing database, do a restore.
Yeah it's pretty much what Somnid said.
Here is a Stack Overflow question that gives a lot of ways to fix it depending on your setup. https://stackoverflow.com/questions/18286765/sql-server-operating-system-error-5-5access-is-denied
fierrotlepou
Member
Hey guys,
I've got a super interesting job opportunity and I'd like to learn how to use git/github. I don't need perfect knowledge, but I'd like to be able to use it. Do you guys know of any great resources to learn? I have some notions of how to use it and I have a github account, but I'd like to learn some more.
Thanks in advance!
I've got a super interesting job opportunity and I'd like to learn how to use git/github. I don't need perfect knowledge, but I'd like to be able to use it. Do you guys know of any great resources to learn? I have some notions of how to use it and I have a github account, but I'd like to learn some more.
Thanks in advance!
Corto Maltese
Neo Member
Thank you both for those answers, helped me out.
That stackoverflow link solved my problem, cheers!
JeTmAn81
Member
Well... To be honest, it took me a lot of time to begin to understand why pointers seem difficult to many.
But after discussing with many, the ones that have troubles with pointers are the one that started algorithmics with some high-level languages that completely hide how things work.
I've encounter students that were killers in assembly and pointers and couldn't write ten lines in Java... but they avoided HL programming at first.
I was definitely super confused by pointers as an undergrad. And honestly I wouldn't consider myself a pointer master now, never having worked for a consistent amount of time in a language that employs them. But the concept is simple enough and easily relatable to a realworld analogue in a teaching setting (street addresses!).
For whatever reason I think the most confusing part may simply be the syntax. Referencing and derererencing operators have never seemed intuitive in the way they're used. Also, pointers are just poorly taught I think.
fierrotlepou
Member
Thank you!
TheLegendaryN
Member
What do you think of SmartGIT? I like the extra graphical layer, which makes it more accessible. I don't have any bad experiences with it.
I probably need to get used to git at some point, but it just seems so backward to be typing stuff into a command console when I have a GUI interface I use every day with SVN for my job.
cpp_is_king
Member
I'm the biggest GUI fanatic you'll ever find, but yea.. You don't fuck with another man's git. I will never use SVN again.
There's plently of GUI interfaces for Git (and also shell integration like Tortoise) but personally, I don't understand why someone would favor a GUI to a CLI tool... Well, to each its own... I know I'm in the minority when I favor Hg over git.
Lister
Banned
Regardless you should be familiar with how git works and git commands even if you do use a GUI, so you know how to handle situations where the GUI is inssuficient (and they do crop up from time to time) and understand what all the GUI settings/options actually do.
I like github desktop and SourceTree personally.
I like github desktop and SourceTree personally.
Is there anything wrong with SVN or do you just find git better to use?
Git is trivial to branch and conflicts are resolved locally instead of on the server.
Which course? I might look at it if there's another $5 sale.
Git is decentralized which makes it easier/faster to commit as there's no traffic with a remote repository until you specifically push/pull commits. It's also better at merging branches which makes it better for a CI workflow.
Downside is that Git has a bigger learning curve.
https://www.udemy.com/unrealcourse/
First section is a basic C++ primer then you get into basic stuff in unreal which is where it really gets fun. Thankfully since I already have a basic understanding of programming I've been exploring and adding my own features to the example projects we've been doing and its pretty rewarding seeing your changes come to life instantly. I think I'm more productive here at home than I am at work LOL.
Days when I work from home always feel more productive to me. I'd love my job a lot more if it was a regular thing. First day back from vacation and I've gotten way less done than I wanted to. But I'd lose the opportunity to call people over to check something out that I've been working on. Although I guess there could be ways around there.
Do you think it's worth buying for a programming newbie? I have one programming class under my belt, which used python. I've been told it's a pain in the ass to learn C++ but will have to learn it next spring anyways. Should I bite the bullet and purchase it?
cpp_is_king
Member
Svn couldn't do a merge to save its life. I remember the dreaded tree conflict which basically translates to "you're fucked". In git it's so easy to do just about everything, from reordering commits, to branching, merges are always very straightforward no matter how complicated, you can move around arbitrary commits almost as easily as copying files. Everything just works. Having multiple branches in svn requires having multiple copies of the source tree, which is patently ridiculous.
Also companies are more and more moving away from old VCSs to stuff like Git. See 2017's Stack Overflow developer survey: https://insights.stackoverflow.com/survey/2017#development-practices (scroll down a bit). Almost 70% of respondents use Git.
I know, that's why I said I personally need to get on it and learn git at some point, I was just wondering if there was some critical flaw with SVN that would cause us to switch at work as well.
SVN ain't broke for us, so we will continue to use it for the time being I think.
He does a lot of hand holding, although I feel he doesn't do a good job if you're absolutely new to programming as he just kinda breezes over some pretty complicated stuff like classes, but if you have knowledge of programming already then it really shouldn't be a problem, the first 52 videos are all about making a simple console program in c++ that you could literally follow along with him as he goes. He does put pauses in the video and challenges you to try to solve the problem on your own, then after the pause he goes and implements it himself in case you can't solve it. The videos are short ranging from probably 5 to 12 minutes so I usually try to hit at least 2-3 a day. The course starts off with making a really basic word guessing game in the console, then you move over to unreal and make a small game where you try to escape a room (very basic 4 walls and a door that opens when you step in a certain spot) then you go into making a first person shooter(just a open map with a gun and you eventually put targets on the map), then finally a very basic tank battle game. I just finished the room section and its been pretty fun So far, the console stuff was a little boring but once you get into unreal it so much more rewarding.
Though most people I know work with several copies when using git (at least for the current git version and their own branch).
The main advantate I see is that you can commit non-working things (to be able to go back and forth should something bad happen), and only push them once it's working.
Also, when you're often cut from the internet, like me (wireless in bullet trains is only for the end of the year at best), it's handy to have a local repository.
If you're able to choose your tools, Hg is easier to learn coming from SVN than Git.
Philosophies differ (I prefer Hg's) but at least, you're getting the advantages of DCVS. Once you're at ease with one, basic operations on the other are easy.
The main drawback to Hg is GitHub is Git-only...
PetriP-TNT
Member
cpp_is_king
Member
Why?
Fragamemnon
Member
Most editors and IDEs have good Git integration for simple branch/stage/commit/pull/push (90% of your commands), and merge assist help if you hit conflicts. You should only need the command line for 5-10% of stuff (mostly rebase/cherry-pick and exotic merge options).
I don't want to live in a world without lightweight branches, complete local histories, and badass merging.
I know, I've even hg-git installed, and tested it on a couple git projects (as curiosity, I believe it's better to use the tool everyone uses in a project).
It make some sense if you want to use github. But it's still using a Hg client on a git repository, so if you prefer the Hg way of doing things with respect to rewrites, that's not satisfying...
And publishing code there helps Git, so as an Hg supporter, I'm reluctant to do this, even if I can. And yes, I know it's useful for job hunting, but well... I'm not hunting currently.
Not sure... I've seen whole threads about this on the internet, usually heated ones. It's apparently a common practice.
From what I understand (either I work alone, or with really clearly defined independant tasks) it's so that you can pull the current version on a regular basis without touching your working copy, so that you can check how things evolve.
Grenouille
Member
I started programming 6 months ago. Finished my first semester in University, got good grades, surprisingly (first semester though is always easier, I suppose).
I'm always doubting myself, always afraid of increasing difficulty levels, of hitting a plateau, because I've never seen myself as being good with logic. So far it hasn't happened yet. So far, programming can be very entertaining and satisfying when things just work, and incredibly frustrating when it doesn't for hours. I wonder if the frustration and failings happen less and less the more experienced you get? I can't imagine the stress of not being able to solve a problem in a professional environment, with all that pressure.
I just got an internship as help desk. Payment is shitty, but I can't seem to get development internships right out of the gate and I heard that's the way to start, so I guess it's ok.
I'm always doubting myself, always afraid of increasing difficulty levels, of hitting a plateau, because I've never seen myself as being good with logic. So far it hasn't happened yet. So far, programming can be very entertaining and satisfying when things just work, and incredibly frustrating when it doesn't for hours. I wonder if the frustration and failings happen less and less the more experienced you get? I can't imagine the stress of not being able to solve a problem in a professional environment, with all that pressure.
I just got an internship as help desk. Payment is shitty, but I can't seem to get development internships right out of the gate and I heard that's the way to start, so I guess it's ok.
Haven't tried it myself, I've used Git Krakken though before which is similar. I like it, sometimes I guess I'm just used to the command line git and just end up using that but whatever floats your boat I'd say.
I'm still in college as well, but entering my senior year and currently interning somewhere. I still frequently hit walls and get frustrated, but always ends up panning out somehow. I'm no like principal software engineer ofc, but I'd imagine it never ends. Actually the one senior software engineer guy I work with has been for a few weeks now hitting walls setting up these Docker containers. Guy has been programming since the 80s lol. So nah, not alone. Also check your school if they have help desk jobs there too. That's where I work during the year and love it. Congrats on the internship
Spoiled Milk
Banned
It's annoying doing git stash just to check on someone else's branch, so I approve of this.
Alternatively, just learn git stash.
EDIT: I hate C. And I hate C because I hate macros. When your language doesn't have any real concept of modularity you end up with metaprogramming nonsense. C++ was supposed to fix this, theoretically but... Anyway I wanted to review the UNIX errno's. So I thought, ok, I'm including errno.h. If I want to know what the errnos are I'll just cat /usr/include/errno.h.
Code:
#ifndef _ERRNO_H
/* The includer defined __need_Emath if he wants only the definitions
of EDOM and ERANGE, and not everything else. */
#ifndef __need_Emath
# define _ERRNO_H 1
# include <features.h>
#endif
__BEGIN_DECLS
/* Get the error number constants from the system-specific file.
This file will test __need_Emath and _ERRNO_H. */
#include <bits/errno.h>
#undef __need_Emath
#ifdef _ERRNO_H
/* Declare the `errno' variable, unless it's defined as a macro by
bits/errno.h. This is the case in GNU, where it is a per-thread
variable. This redeclaration using the macro still works, but it
will be a function declaration without a prototype and may trigger
a -Wstrict-prototypes warning. */
#ifndef errno
extern int errno;
#endif
#ifdef __USE_GNU
/* The full and simple forms of the name with which the program was
invoked. These variables are set up automatically at startup based on
the value of ARGV[0] (this works only if you use GNU ld). */
extern char *program_invocation_name, *program_invocation_short_name;
#endif /* __USE_GNU */
#endif /* _ERRNO_H */
__END_DECLS
#endif /* _ERRNO_H */
/* The Hurd <bits/errno.h> defines `error_t' as an enumerated type so
that printing `error_t' values in the debugger shows the names. We
might need this definition sometimes even if this file was included
before. */
#if defined __USE_GNU || defined __need_error_t
# ifndef __error_t_defined
typedef int error_t;
# define __error_t_defined 1
# endif
# undef __need_error_t
#endifWelp, ok. I could run errno.h through the preprocessor I guess but I won't be excited by what I get.
EDIT: Clearly I don't know how to use the preprocessor because this gcc -E test.c isn't work:
Code:
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 31 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 32 "<command-line>" 2
# 1 "test.c"
# 1 "/usr/include/errno.h" 1 3 4
# 28 "/usr/include/errno.h" 3 4
# 1 "/usr/include/features.h" 1 3 4
# 410 "/usr/include/features.h" 3 4
# 1 "/usr/include/sys/cdefs.h" 1 3 4
# 441 "/usr/include/sys/cdefs.h" 3 4
# 1 "/usr/include/bits/wordsize.h" 1 3 4
# 442 "/usr/include/sys/cdefs.h" 2 3 4
# 1 "/usr/include/bits/long-double.h" 1 3 4
# 443 "/usr/include/sys/cdefs.h" 2 3 4
# 411 "/usr/include/features.h" 2 3 4
# 434 "/usr/include/features.h" 3 4
# 1 "/usr/include/gnu/stubs.h" 1 3 4
# 10 "/usr/include/gnu/stubs.h" 3 4
# 1 "/usr/include/gnu/stubs-64.h" 1 3 4
# 11 "/usr/include/gnu/stubs.h" 2 3 4
# 435 "/usr/include/features.h" 2 3 4
# 29 "/usr/include/errno.h" 2 3 4
# 1 "/usr/include/bits/errno.h" 1 3 4
# 24 "/usr/include/bits/errno.h" 3 4
# 1 "/usr/include/linux/errno.h" 1 3 4
# 1 "/usr/include/asm/errno.h" 1 3 4
# 1 "/usr/include/asm-generic/errno.h" 1 3 4
# 1 "/usr/include/asm-generic/errno-base.h" 1 3 4
# 5 "/usr/include/asm-generic/errno.h" 2 3 4
# 1 "/usr/include/asm/errno.h" 2 3 4
# 1 "/usr/include/linux/errno.h" 2 3 4
# 25 "/usr/include/bits/errno.h" 2 3 4
# 50 "/usr/include/bits/errno.h" 3 4
# 50 "/usr/include/bits/errno.h" 3 4
extern int *__errno_location (void) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__const__));
# 36 "/usr/include/errno.h" 2 3 4
# 58 "/usr/include/errno.h" 3 4
# 1 "test.c" 2...haha...helpful... :/ Oh, wait, actually, that was helpful, but I could have just read errno.h the first time.
Code:
# 1 "/usr/include/linux/errno.h" 2 3 4Yeah, that sounds like the right file.
Code:
#include <asm/errno.h>
Code:
#include <asm-generic/errno.h>
Code:
#ifndef _ASM_GENERIC_ERRNO_H
#define _ASM_GENERIC_ERRNO_H
#include <asm-generic/errno-base.h>
#define EDEADLK 35 /* Resource deadlock would occur */
#define ENAMETOOLONG 36 /* File name too long */
#define ENOLCK 37 /* No record locks available */
/*
* This error code is special: arch syscall entry code will return
* -ENOSYS if users try to call a syscall that doesn't exist. To keep
* failures of syscalls that really do exist distinguishable from
* failures due to attempts to use a nonexistent syscall, syscall
* implementations should refrain from returning -ENOSYS.
*/
#define ENOSYS 38 /* Invalid system call number */
#define ENOTEMPTY 39 /* Directory not empty */
#define ELOOP 40 /* Too many symbolic links encountered */
#define EWOULDBLOCK EAGAIN /* Operation would block */
#define ENOMSG 42 /* No message of desired type */
#define EIDRM 43 /* Identifier removed */
#define ECHRNG 44 /* Channel number out of range */
#define EL2NSYNC 45 /* Level 2 not synchronized */
#define EL3HLT 46 /* Level 3 halted */
#define EL3RST 47 /* Level 3 reset */
#define ELNRNG 48 /* Link number out of range */
#define EUNATCH 49 /* Protocol driver not attached */
#define ENOCSI 50 /* No CSI structure available */
#define EL2HLT 51 /* Level 2 halted */
#define EBADE 52 /* Invalid exchange */
#define EBADR 53 /* Invalid request descriptor */
#define EXFULL 54 /* Exchange full */
#define ENOANO 55 /* No anode */
#define EBADRQC 56 /* Invalid request code */
#define EBADSLT 57 /* Invalid slot */
#define EDEADLOCK EDEADLK
#define EBFONT 59 /* Bad font file format */
#define ENOSTR 60 /* Device not a stream */
#define ENODATA 61 /* No data available */
#define ETIME 62 /* Timer expired */
#define ENOSR 63 /* Out of streams resources */
#define ENONET 64 /* Machine is not on the network */
#define ENOPKG 65 /* Package not installed */
#define EREMOTE 66 /* Object is remote */
#define ENOLINK 67 /* Link has been severed */
#define EADV 68 /* Advertise error */
#define ESRMNT 69 /* Srmount error */
#define ECOMM 70 /* Communication error on send */
#define EPROTO 71 /* Protocol error */
#define EMULTIHOP 72 /* Multihop attempted */
#define EDOTDOT 73 /* RFS specific error */
#define EBADMSG 74 /* Not a data message */
#define EOVERFLOW 75 /* Value too large for defined data type */
#define ENOTUNIQ 76 /* Name not unique on network */
#define EBADFD 77 /* File descriptor in bad state */
#define EREMCHG 78 /* Remote address changed */
#define ELIBACC 79 /* Can not access a needed shared library */
#define ELIBBAD 80 /* Accessing a corrupted shared library */
#define ELIBSCN 81 /* .lib section in a.out corrupted */
#define ELIBMAX 82 /* Attempting to link in too many shared libraries */
#define ELIBEXEC 83 /* Cannot exec a shared library directly */
#define EILSEQ 84 /* Illegal byte sequence */
#define ERESTART 85 /* Interrupted system call should be restarted */
#define ESTRPIPE 86 /* Streams pipe error */
#define EUSERS 87 /* Too many users */
#define ENOTSOCK 88 /* Socket operation on non-socket */
#define EDESTADDRREQ 89 /* Destination address required */
#define EMSGSIZE 90 /* Message too long */
#define EPROTOTYPE 91 /* Protocol wrong type for socket */
#define ENOPROTOOPT 92 /* Protocol not available */
#define EPROTONOSUPPORT 93 /* Protocol not supported */
#define ESOCKTNOSUPPORT 94 /* Socket type not supported */
#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
#define EPFNOSUPPORT 96 /* Protocol family not supported */
#define EAFNOSUPPORT 97 /* Address family not supported by protocol */
#define EADDRINUSE 98 /* Address already in use */
#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
#define ENETDOWN 100 /* Network is down */
#define ENETUNREACH 101 /* Network is unreachable */
#define ENETRESET 102 /* Network dropped connection because of reset */
#define ECONNABORTED 103 /* Software caused connection abort */
#define ECONNRESET 104 /* Connection reset by peer */
#define ENOBUFS 105 /* No buffer space available */
#define EISCONN 106 /* Transport endpoint is already connected */
#define ENOTCONN 107 /* Transport endpoint is not connected */
#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS 109 /* Too many references: cannot splice */
#define ETIMEDOUT 110 /* Connection timed out */
#define ECONNREFUSED 111 /* Connection refused */
#define EHOSTDOWN 112 /* Host is down */
#define EHOSTUNREACH 113 /* No route to host */
#define EALREADY 114 /* Operation already in progress */
#define EINPROGRESS 115 /* Operation now in progress */
#define ESTALE 116 /* Stale file handle */
#define EUCLEAN 117 /* Structure needs cleaning */
#define ENOTNAM 118 /* Not a XENIX named type file */
#define ENAVAIL 119 /* No XENIX semaphores available */
#define EISNAM 120 /* Is a named type file */
#define EREMOTEIO 121 /* Remote I/O error */
#define EDQUOT 122 /* Quota exceeded */
#define ENOMEDIUM 123 /* No medium found */
#define EMEDIUMTYPE 124 /* Wrong medium type */
#define ECANCELED 125 /* Operation Canceled */
#define ENOKEY 126 /* Required key not available */
#define EKEYEXPIRED 127 /* Key has expired */
#define EKEYREVOKED 128 /* Key has been revoked */
#define EKEYREJECTED 129 /* Key was rejected by service */
/* for robust mutexes */
#define EOWNERDEAD 130 /* Owner died */
#define ENOTRECOVERABLE 131 /* State not recoverable */
#define ERFKILL 132 /* Operation not possible due to RF-kill */
#define EHWPOISON 133 /* Memory page has hardware error */
#endifBingo, my friends. But where's ENOENT? And other errnos I actually use? I see errno-base.h is also referenced...
Code:
#ifndef _ASM_GENERIC_ERRNO_BASE_H
#define _ASM_GENERIC_ERRNO_BASE_H
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Argument list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file number */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Try again */
#define ENOMEM 12 /* Out of memory */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
#define EBUSY 16 /* Device or resource busy */
#define EEXIST 17 /* File exists */
#define EXDEV 18 /* Cross-device link */
#define ENODEV 19 /* No such device */
#define ENOTDIR 20 /* Not a directory */
#define EISDIR 21 /* Is a directory */
#define EINVAL 22 /* Invalid argument */
#define ENFILE 23 /* File table overflow */
#define EMFILE 24 /* Too many open files */
#define ENOTTY 25 /* Not a typewriter */
#define ETXTBSY 26 /* Text file busy */
#define EFBIG 27 /* File too large */
#define ENOSPC 28 /* No space left on device */
#define ESPIPE 29 /* Illegal seek */
#define EROFS 30 /* Read-only file system */
#define EMLINK 31 /* Too many links */
#define EPIPE 32 /* Broken pipe */
#define EDOM 33 /* Math argument out of domain of func */
#define ERANGE 34 /* Math result not representable */
#endifThis has been another episode of "why didn't you just read Advanced Programming in a UNIX Environment, 3rd Edition?"
Because it's $40 and I could have just done "man errno" instead of trying to read source code. God forbid I actually read the source code to learn about the libraries I'm using. *DRAMATIC EYEROLL*.