User Tools
ubuntu:setuid
Differences
This shows you the differences between two versions of the page.
| Next revision | Previous revision | ||
|
ubuntu:setuid [2018/02/18 05:49] tschulz created |
ubuntu:setuid [2018/02/18 05:54] (current) tschulz |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== setUID ====== | ====== setUID ====== | ||
| + | ===== SetUid C source ===== | ||
| - | <file> | + | <file c setuidtest.c> |
| #include <stdio.h> | #include <stdio.h> | ||
| #include <sys/types.h> | #include <sys/types.h> | ||
| #include <unistd.h> | #include <unistd.h> | ||
| + | #include <stdlib.h> | ||
| int main(void) | int main(void) | ||
| { | { | ||
| Line 25: | Line 27: | ||
| } | } | ||
| </file> | </file> | ||
| + | |||
| + | ===== Compile and chmod ===== | ||
| + | <file bash> | ||
| + | gcc -o setuidtest setuidtest.c | ||
| + | chmod u+s setuidtest | ||
| + | </file> | ||
| + | |||
| + | ===== Read from stdin ===== | ||
| + | <file c> | ||
| + | char buf[1]; | ||
| + | |||
| + | while(read(0, buf, sizeof(buf))>0) { | ||
| + | // read() here read from stdin charachter by character | ||
| + | // the buf[0] contains the character got by read() | ||
| + | .... | ||
| + | } | ||
| + | </file> | ||
| + | |||
ubuntu/setuid.1518954583.txt.gz · Last modified: 2018/02/18 05:49 by tschulz
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
