7 More Discussions You Might Find Interesting
1. Programming
With a little bit of work, was able to build a nice "Wuhan Coronavirus Status" app using MQTT and the IoT-OnOff app. More on this technique here:
ESP32 (ESP-WROOM-32) as an MQTT Client Subscribed to Linux Server Load Average Messages
The result turned out nice, I think. I like the look and... (10 Replies)
Discussion started by: Neo
10 Replies
2. Solaris
Hi folks,
because of disk space problem my root is almost full..The root is mounted on rpool and i want to move /app on a new disk, is that possible without compromising any link?How can i do that?
I use solaris 10
Thank you in advance,
Matt
---------- Post updated at 04:36 PM... (8 Replies)
Discussion started by: mattpunk
8 Replies
3. Solaris
Hi folks,
i have a problem with my /app directory on solaris 10.It is mounted under rpool root and sometimes it increase dimension bringing root out of space.I want to mount /app under different position, maybe under secondary hardisk for which i have created a mount point with zfs pool...How... (10 Replies)
Discussion started by: mattpunk
10 Replies
4. AIX
Hi,
A quick question. If I build an application on AIX 6.1 TL3 using XL C/C++ 8.0 and Oracle 10g, can I then take those binaries and run them on AIX 5.3 and previous?
Regards
Kevin (3 Replies)
Discussion started by: KevB
3 Replies
5. Red Hat
Hi All,
I got this userid apache with the same userid and groupid and /sbin/nologin and the /www/a home folder is empty.
Can I just delete this userid? How can I investigate if userid have something to do with the application?
Thanks for any comment you may add. (1 Reply)
Discussion started by: itik
1 Replies
6. Solaris
The guys at SunGard want to charge a lot of $$$$ for installing Luminis and we are trying to see if this can be done without them. Their installation guide provided page #53 ( http://www.luminis.nocccd.edu/documents/Luminis%20IV/lp40000in.pdf ) doesn't really tell you much. All they say is that... (4 Replies)
Discussion started by: ceci1
4 Replies
7. Programming
Hello All -
We have a legacy C program running non stop on one of our servers, with several instances often running at once. Fairly regularly, one of the instances while stop outputting to the log file and will just deadlock/hang. They must be then 'kill'ed by myself.
When I gdb into one of... (3 Replies)
Discussion started by: markanderson
3 Replies
LEARN ABOUT LINUX
setegid
SETEUID(2) Linux Programmer's Manual SETEUID(2)
NAME
seteuid, setegid - set effective user or group ID
SYNOPSIS
#include <sys/types.h>
#include <unistd.h>
int seteuid(uid_t euid);
int setegid(gid_t egid);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
seteuid(), setegid():
_BSD_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
DESCRIPTION
seteuid() sets the effective user ID of the calling process. Unprivileged user processes may only set the effective user ID to the real
user ID, the effective user ID or the saved set-user-ID.
Precisely the same holds for setegid() with "group" instead of "user".
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EPERM The calling process is not privileged (Linux: does not have the CAP_SETUID capability in the case of seteuid(), or the CAP_SETGID
capability in the case of setegid()) and euid (respectively, egid) is not the real user (group) ID, the effective user (group) ID,
or the saved set-user-ID (saved set-group-ID).
CONFORMING TO
4.3BSD, POSIX.1-2001.
NOTES
Setting the effective user (group) ID to the saved set-user-ID (saved set-group-ID) is possible since Linux 1.1.37 (1.1.38). On an arbi-
trary system one should check _POSIX_SAVED_IDS.
Under libc4, libc5 and glibc 2.0 seteuid(euid) is equivalent to setreuid(-1, euid) and hence may change the saved set-user-ID. Under glibc
2.1 and later it is equivalent to setresuid(-1, euid, -1) and hence does not change the saved set-user-ID. Similar remarks hold for sete-
gid().
According to POSIX.1, seteuid() (setegid()) need not permit euid (egid) to be the same value as the current effective user (group) ID, and
some implementations do not permit this.
SEE ALSO
geteuid(2), setresuid(2), setreuid(2), setuid(2), capabilities(7), credentials(7)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2009-10-17 SETEUID(2)