madmaurice
650a576c56
seteuid sets the effective uid but at the same time retains the old effective uid as a so called saved uid, which allows the process to go back to root at a later point in time. As we don't want that, we use the function setresuid and setresgid instead, allowing to set the real, effective and saved uid/gid. We keep the real uid/gid unchanged, but set the effective and saved uid/gid to the value of the real uid. This forbids us to not regain root priviliges. |
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main.c | ||
Makefile |