diff options
Diffstat (limited to 'nixpkgs/pkgs/test/make-binary-wrapper/prefix.c')
-rw-r--r-- | nixpkgs/pkgs/test/make-binary-wrapper/prefix.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/test/make-binary-wrapper/prefix.c b/nixpkgs/pkgs/test/make-binary-wrapper/prefix.c new file mode 100644 index 000000000000..ea8fbdc64a84 --- /dev/null +++ b/nixpkgs/pkgs/test/make-binary-wrapper/prefix.c @@ -0,0 +1,26 @@ +#define _GNU_SOURCE /* See feature_test_macros(7) */ +#include <unistd.h> +#include <stdlib.h> +#include <assert.h> +#include <stdio.h> + +#define assert_success(e) do { if ((e) < 0) { perror(#e); abort(); } } while (0) + +void set_env_prefix(char *env, char *sep, char *prefix) { + char *existing = getenv(env); + if (existing) { + char *val; + assert_success(asprintf(&val, "%s%s%s", prefix, sep, existing)); + assert_success(setenv(env, val, 1)); + free(val); + } else { + assert_success(setenv(env, prefix, 1)); + } +} + +int main(int argc, char **argv) { + set_env_prefix("PATH", ":", "/usr/bin/"); + set_env_prefix("PATH", ":", "/usr/local/bin/"); + argv[0] = "/send/me/flags"; + return execv("/send/me/flags", argv); +} |