Function read_file_alloc

src/pipeline/artifact.c:132–157

Read entire file into malloc'd buffer. Sets *out_len. Returns NULL on error. */

/* Read entire file into malloc'd buffer. Sets *out_len. Returns NULL on error. */
static char *read_file_alloc(const char *path, size_t *out_len) {
    FILE *fp = cbm_fopen(path, "rb");
    if (!fp) {
        return NULL;
    }
    (void)fseek(fp, 0, SEEK_END);
    long sz = ftell(fp);
    if (sz <= 0) {
        (void)fclose(fp);
        return NULL;
    }
    (void)fseek(fp, 0, SEEK_SET);
    char *buf = malloc((size_t)sz);
    if (!buf) {
        (void)fclose(fp);
        return NULL;
    }
    size_t rd = fread(buf, ART_NUL, (size_t)sz, fp);
    (void)fclose(fp);
    if ((long)rd != sz) {
        free(buf);
        return NULL;
    }
    *out_len = (size_t)sz;
    return buf;
}

/* Write buffer to file atomically (write to tmp, rename). Returns 0 on success. */
static int write_file_atomic(const char *path, const char *data, size_t len,