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setuid.2: wfix 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2017-11-23 21:43:45 +01:00
parent 674367694c
commit defcd2c896
1 changed files with 2 additions and 3 deletions
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man2/setuid.2
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@ -56,10 +56,9 @@ privileges, do some un-privileged work, and then reengage the original
effective user ID in a secure manner. effective user ID in a secure manner.
.PP .PP
If the user is root or the program is set-user-ID-root, special care must be If the user is root or the program is set-user-ID-root, special care must be
taken. taken:
The
.BR setuid () .BR setuid ()
function checks the effective user ID of the caller and if it is checks the effective user ID of the caller and if it is
the superuser, all process-related user ID's are set to the superuser, all process-related user ID's are set to
.IR uid . .IR uid .
After this has occurred, it is impossible for the program to regain root After this has occurred, it is impossible for the program to regain root