7da1d0dde1
The functions grub_util_exec_pipe() and grub_util_exec_pipe_stderr() currently call execvp(). If the call fails for any reason, the child currently calls exit(127). This in turn executes the parents atexit() handlers from the forked child, and then the same handlers are called again from parent. This is usually not desired, and can lead to deadlocks, and undesired behavior. So, change the exit() calls to _exit() calls to avoid calling atexit() handlers from child. Fixes: e75cf4a58 (unix exec: avoid atexit handlers when child exits) Signed-off-by: Dimitri John Ledkov <xnox@ubuntu.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'