linux 程序 打开 /dev/mem permission denied
2015-06-12 15:35
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链接:
http://www.element14.com/community/thread/19995/l/anyone-know-how-to-access-raspi-gpio-without-sudo?displayFullThread=true
Unix has a “security model”. As a normal users you can do stuff, but
you should not be able to access other people’s files on the same
computer. And as a user you should not be able to cause the computer
to stop working.
The program can be made setuid by doing
http://www.element14.com/community/thread/19995/l/anyone-know-how-to-access-raspi-gpio-without-sudo?displayFullThread=true
Unix has a “security model”. As a normal users you can do stuff, but
you should not be able to access other people’s files on the same
computer. And as a user you should not be able to cause the computer
to stop working.
The program can be made setuid by doing
sudo chown root <program name> sudo chmod 4755 <program name>
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