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27 lines
769 B
C
27 lines
769 B
C
#define _GNU_SOURCE /* See feature_test_macros(7) */
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#include <unistd.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <stdio.h>
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#define assert_success(e) do { if ((e) < 0) { perror(#e); abort(); } } while (0)
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void set_env_prefix(char *env, char *sep, char *prefix) {
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char *existing = getenv(env);
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if (existing) {
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char *val;
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assert_success(asprintf(&val, "%s%s%s", prefix, sep, existing));
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assert_success(setenv(env, val, 1));
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free(val);
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} else {
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assert_success(setenv(env, prefix, 1));
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}
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}
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int main(int argc, char **argv) {
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set_env_prefix("PATH", ":", "/usr/bin/");
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set_env_prefix("PATH", ":", "/usr/local/bin/");
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argv[0] = "/send/me/flags";
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return execv("/send/me/flags", argv);
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}
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