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#include <assert.h> #include <stdio.h> #include <string.h> #include <unistd.h> int main() { const char* target = "./input.txt"; const char* linkpath = "/sandbox/subdir/test_link"; char readlink_result[128]; size_t result_size = sizeof(readlink_result); assert(0 == symlink(target, linkpath)); assert(readlink(linkpath, readlink_result, result_size) == strlen(target) + 1); assert(0 == strcmp(readlink_result, target)); FILE* file = fopen(linkpath, "r"); assert(file != NULL); int c = fgetc(file); while (c != EOF) { int wrote = fputc(c, stdout); assert(wrote != EOF); c = fgetc(file); } }