[asterisk-users] Explication for ast_safe_system

[Eric Dantie]

Can someone please explain the reason on the following code (in
asterisk.c, function ast_safe_system()):

/* Close file descriptors and launch system command */
for (x = STDERR_FILENO + 1; x < 4096; x++)
    close(x);


Why to close so many descriptors?

Thanks in advance
Éric