01-13-2008
10 More Discussions You Might Find Interesting
1. Programming
Hello everybody,
I am having major problems at the moment with shared libraries and I have to little knowledge of them to solve them. So please, please help me :)
Ok this is the problem:
I have a library A, which uses B and C, and C uses again D.
If I try to run A as plugin in apache,... (0 Replies)
Discussion started by: Micky
0 Replies
2. Programming
I am compiling code which produces .a and .la libraries. How can I produce .so libraries? I know that gcc -shared does but how? (2 Replies)
Discussion started by: thalex
2 Replies
3. UNIX for Dummies Questions & Answers
I have a doubt about the shared libraries. Where do you set the path for the shared libaries, for the dynamic loader to locate. Any suggestion would be of great help. thanks (3 Replies)
Discussion started by: ramkumar_gr
3 Replies
4. Programming
Hi!
I have the following problem with C++ programs on Unix:
There is a binary executable program called, e.g. Main. It is dynamically linked with two shared libraries: Shared1 and Shared2. Both of these libraries, in turn, are statically linked with a static library called Static. This static... (0 Replies)
Discussion started by: maestro@altiris
0 Replies
5. Linux
How do i make a library shared
say i have a library a.so which i have just compiled.
I want to make it shared how do i make it
Next Queation is what is the difference between a.so.0 a.so.1 a.so.2 & a.so :rolleyes: (1 Reply)
Discussion started by: wojtyla
1 Replies
6. UNIX for Advanced & Expert Users
Hi,
I am trying to create a shared library from a .c file using
gcc -c -fpic -I/usr/local/include Chksum.C -o Chksum.o
gcc -shared -o libtclcksum.so Chksum.o
when i try to load this shared library libtclcksum.so in tclsh
% load libtclcksum.so
I get the following error:
couldn't load... (1 Reply)
Discussion started by: archana485
1 Replies
7. Programming
Hi,
Let's say there's an application compiled with a static library. So, if the application forks processes, then the static library is copied, also? Or the static library codes are shared between the processes of the application?
Thanks in advance. (2 Replies)
Discussion started by: xyzt
2 Replies
8. Programming
im used to windows dll which gets loaded at runtime, are static libraries the same? the ones i link with -l on gcc?
i mean, if my app used libpng for example, and i compiled it to a single ELF executable and took it to another pc that have no libpng on it, will it work? or it will complain... (2 Replies)
Discussion started by: JonhyM
2 Replies
9. Red Hat
hi,
while running the below query it gives the shared libraries prmblem,
$ cd /oracle/app/product/fmw/asinst_1/bin/
$ ./opmnctl status
/oracle/app/product/fmw/Oracle_IDM1/opmn/bin/opmn: error while loading shared libraries: libgcc_s.so.1: cannot open shared object file: Permission... (0 Replies)
Discussion started by: rahulsword
0 Replies
10. Solaris
Does anyone know whether it is possible to make self contained shared libraries ? (.so files). If so, what is the way to do it ?
---------- Post updated at 08:03 AM ---------- Previous update was at 07:56 AM ----------
On Solaris that is. (6 Replies)
Discussion started by: lkb
6 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)