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| Code Block | ||
|---|---|---|
| ||
/* First the options that are only allowed for root */
if (getuid() == 0 || geteuid != 0) {
/* ... */
}
|
Implementation-Specific Details
This error can often be detected through the analysis of compiler warnings. For example, when this code is compiled with some versions of the GCC compiler,
| Code Block |
|---|
#include <unistd.h>
#include <stdlib.h>
int main(void) {
geteuid ? exit(0) : exit(1);
}
|
the following warning will be generated:
| Code Block |
|---|
example.c: In function 'main':
example.c:6: warning: the address of 'geteuid', will always
evaluate as 'true'
|
Compliant Solution
The solution is to provide the open and close parentheses following the geteuid token so that the function is properly invoked.
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