Manpages - setproctitle.3bsd

(See

for include usage.)

The

library routine sets the process title that appears on the

command.

The

library routine only needs to be called (before any call to

and with

arguments), if the automatic constructor support has not been linked in through the libbsd-ctor pkg-config file.

The title is set from the executable’s name, followed by the result of a

style expansion of the arguments as specified by the

argument. If the

argument begins with a

character, the executable’s name is skipped.

is NULL, the process title is restored.

To set the title on a daemon to indicate its activity:

setproctitle(“talking to %s”, inet_ntoa(addr));

The

function is implicitly non-standard. Other methods of causing the

command line to change, including copying over the argv[0] string are also implicitly non-portable. It is preferable to use an operating system supplied

if present.

Unfortunately, it is possible that there are other calling conventions to other versions of

although none have been found by the author as yet. This is believed to be the predominant convention.

It is thought that the implementation is compatible with other systems, including

and

The

function first appeared in

Other operating systems have similar functions.

The

function is a libbsd extension not present on the BSDs; avoid using it in portable code.

stole the idea from the

source code by

Never pass a string with user-supplied data as a format without using

An attacker can put format specifiers in the string to mangle your stack, leading to a possible security hole. This holds true even if the string was built using a function like

as the resulting string may still contain user-supplied conversion specifiers for later interpolation by

Always use the proper secure idiom: