Manual Reference Pages - SETPROCTITLE (3)
- set process title
setproctitle const char *fmt ...
library routine sets the process title that appears on the
The title is set from the executables name, followed by the
result of a
style expansion of the arguments as specified by the
argument begins with a
character, the executables 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));
is implicitly non-standard.
Other methods of causing the
command line to change, including copying over the argv string are
also implicitly non-portable.
It is preferable to use an operating system
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,
first appeared in
.Fx 2.2 .
Other operating systems have
.An Peter Wemm Aq peter@FreeBSD.org
stole the idea from the
source code by
.An Eric Allman Aq firstname.lastname@example.org .
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:
setproctitle( %s, string);
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