Only mangle argv[0] of the first executed process and leave the argument
vector of subsequent invocations as-is to allow child programs to properly
discover resources relative to their binary locations.
Fixes "cc1" discovery when executing the host gcc through the bundled
"ccache" executable.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
int mangle_arg0(int argc, char **argv, char **env) {
char *arg0 = getenv("RUNAS_ARG0");
- if (arg0)
+ if (arg0) {
argv[0] = arg0;
+ unsetenv("RUNAS_ARG0");
+ }
return 0;
}