/g/ - syscall of the day: too complicated to list - Technology

Anonymous

syscall of the day: too compli(...) 03/23/26(Mon)09:10:33 No.108436379

File: 1742503300509670.png (231 KB, 760x804)

syscall of the day: too complicated to list Anonymous 03/23/26(Mon)09:10:33 No.108436379 Archived

previous: >>108430426
#define __NR_getuid                102
#define __NR_getgid                104
#define __NR_setuid                105
#define __NR_setgid                106
#define __NR_geteuid            107
#define __NR_getegid            108
#define __NR_setpgid            109
#define __NR_getpgrp            111
#define __NR_setreuid            113
#define __NR_setregid            114
#define __NR_getgroups            115
#define __NR_setgroups            116
#define __NR_setresuid            117
#define __NR_getresuid            118
#define __NR_setresgid            119
#define __NR_getresgid            120
#define __NR_getpgid            121
i can't be bothered to link all of these
https://man7.org/linux/man-pages/man2/<your_syscall_here>.2.html

tl;dr:
get and set process ids/groups/etc

there's not much to say about these beyond what they say on the tin. the few that are unique in this bundle i skipped over so that they can get their own threads. you should go back and post in the ptrace thread. that one is a whole lot more interesting

relevant resources:
man man
man syscalls
https://man7.org/linux/man-pages/
https://linux.die.net/man/
https://elixir.bootlin.com/linux/
https://elixir.bootlin.com/musl/
https://elixir.bootlin.com/glibc/

Anonymous
03/23/26(Mon)09:12:13 No.108436390

Anonymous 03/23/26(Mon)09:12:13 No.108436390

>>108436379
kys

Anonymous
03/23/26(Mon)09:33:01 No.108436495

Anonymous 03/23/26(Mon)09:33:01 No.108436495

>>108436390
what's your beef with op?

Anonymous
03/23/26(Mon)11:01:30 No.108437049

Anonymous 03/23/26(Mon)11:01:30 No.108437049

>there's not much to say about these
we could talk about the euid and uid. when to use which?
also
>if the process has appropriate privileges, setuid() shall set the real user ID, effective user ID, and the saved set-user-ID of the calling process to uid.
>appropriate privileges
and these are? Do you have to start as root to be able to lower your privileges later or is there support for hierarchical accounts where you need to read on file at startup and then you drop that privilege?

Anonymous
03/23/26(Mon)11:05:21 No.108437080

Anonymous 03/23/26(Mon)11:05:21 No.108437080

what is a syscall?

Anonymous
03/23/26(Mon)11:52:31 No.108437376

Anonymous 03/23/26(Mon)11:52:31 No.108437376

File: 1764470124262541.jpg (266 KB, 905x881)

266 KB JPG

>>108436379
>mfw I can still recognize where this is from

Anonymous
03/23/26(Mon)12:07:42 No.108437473

Anonymous 03/23/26(Mon)12:07:42 No.108437473

>>108436379
>you should go back and post in the ptrace thread.
I will, I just wanted to tell you that I'm delighted you abstained once again from coomer images

Anonymous
03/23/26(Mon)13:15:35 No.108437955

Anonymous 03/23/26(Mon)13:15:35 No.108437955

>>108437049
>>if the process has appropriate privileges, setuid() shall set the real user ID, effective user ID, and the saved set-user-ID of the calling process to uid.
>>appropriate privileges
>and these are? Do you have to start as root to be able to lower your privileges later or is there support for hierarchical accounts where you need to read on file at startup and then you drop that privilege?
You need to either be root or have the CAP_SETUID capability. You can still call setuid(2) without these, but not really in a way that "drops" privileges. https://man7.org/linux/man-pages/man2/setuid.2.html explains this in more detail.

Anonymous
03/23/26(Mon)13:39:21 No.108438146

Anonymous 03/23/26(Mon)13:39:21 No.108438146

>>108437991
Fuufu.

Anonymous
03/23/26(Mon)14:31:40 No.108438527

Anonymous 03/23/26(Mon)14:31:40 No.108438527

>>108437991
shinchou sa max fuufu

Anonymous
03/23/26(Mon)14:40:35 No.108438584

Anonymous 03/23/26(Mon)14:40:35 No.108438584

>>108438527
Me and my japanese wife

Anonymous
03/23/26(Mon)15:04:15 No.108438751

Anonymous 03/23/26(Mon)15:04:15 No.108438751

>>108438527
>>108438146
my negroes

Anonymous
03/23/26(Mon)19:28:16 No.108440300

Anonymous 03/23/26(Mon)19:28:16 No.108440300

>>108438584
literally inspired me I'm gonna do my wife in that position later

Anonymous
03/23/26(Mon)20:28:29 No.108440611

Anonymous 03/23/26(Mon)20:28:29 No.108440611

>>108436379
Niggerlicious. Why so many?

Anonymous
03/23/26(Mon)20:40:56 No.108440675

Anonymous 03/23/26(Mon)20:40:56 No.108440675

>>108440611
Probably because someone realized that branches are expensive.

Anonymous
03/23/26(Mon)22:27:37 No.108441180

Anonymous 03/23/26(Mon)22:27:37 No.108441180

>>108437049
i guess we could also discuss how setuid can fail from a root process, and how not checking the return code is a "grave security violation"
that amuses me

Anonymous
03/23/26(Mon)22:37:02 No.108441232

Anonymous 03/23/26(Mon)22:37:02 No.108441232

>>108440300
Is your wife Japanese and <150cm?

Anonymous
03/23/26(Mon)23:26:46 No.108441456

Anonymous 03/23/26(Mon)23:26:46 No.108441456

>>108437376
It was hot as fuck

Anonymous
03/24/26(Tue)05:01:50 No.108442588

Anonymous 03/24/26(Tue)05:01:50 No.108442588

>>108437376
oh yeah, I do too

Anonymous
03/24/26(Tue)05:03:14 No.108442597

Anonymous 03/24/26(Tue)05:03:14 No.108442597

>>108441232
she's latina and 280lbs

Anonymous
03/24/26(Tue)05:08:16 No.108442620

Anonymous 03/24/26(Tue)05:08:16 No.108442620

>>108442588
nvm, I did not