diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -90,13 +90,16 @@ static size_t bfs_exec_arg_max(const struct bfs_exec *execbuf) { bfs_exec_debug(execbuf, "ARG_MAX: %ld remaining after fixed arguments\n", arg_max); // Assume arguments are counted with the granularity of a single page, - // and allow two pages of headroom to account for rounding as well as - // any other data we may not be counting + // so allow a one page cushion to account for rounding up long page_size = sysconf(_SC_PAGESIZE); if (page_size < 4096) { page_size = 4096; } - arg_max -= 2*page_size; + arg_max -= page_size; + bfs_exec_debug(execbuf, "ARG_MAX: %ld remaining after page cushion\n", arg_max); + + // POSIX recommends an additional 2048 bytes of headroom + arg_max -= 2048; bfs_exec_debug(execbuf, "ARG_MAX: %ld remaining after headroom\n", arg_max); if (arg_max < 0) { |