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Add global DEBUG_INITIALIZE_FILE environment variable for controlling

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whether the debugFile is truncated upon initialization (useful for when
children implicitly re-initialize debugging and you want children to
append to your existing debugFile).
This commit is contained in:
Devin Teske 2013-11-07 10:20:19 +00:00
parent 3e8cb79d0a
commit 57f3f6ee5d
1 changed files with 13 additions and 5 deletions
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18
usr.sbin/bsdconfig/share/common.subr
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@ -67,6 +67,14 @@ export UNAME_R="$(uname -r)" # Release Level (i.e. X.Y-RELEASE)
#
: ${DEBUG_SELF_INITIALIZE=1}
#
# Default behavior of f_debug_init() is to truncate $debugFile (set to NULL to
# disable truncating the debug file when initializing). To get child processes
# to append to the same log file, export this variarable (with a NULL value)
# and also export debugFile with the desired value.
#
: ${DEBUG_INITIALIZE_FILE=1}
#
# Define standard optstring arguments that should be supported by all programs
# using this include (unless DEBUG_SELF_INITIALIZE is set to NULL to prevent
@ -164,13 +172,13 @@ f_debug_init()
[ "$debugFile" ] && export debugFile
#
# Truncate the debug file upon. Note that we will trim a leading plus
# (`+') from the value of debugFile to support persistant meaning that
# f_dprintf() should print both to standard output and $debugFile
# (minus the leading plus, of course).
# Truncate debug file unless requested otherwise. Note that we will
# trim a leading plus (`+') from the value of debugFile to support
# persistant meaning that f_dprintf() should print both to standard
# output and $debugFile (minus the leading plus, of course).
#
local _debug_file="${debugFile#+}"
if [ "$_debug_file" ]; then
if [ "$_debug_file" -a "$DEBUG_INITIALIZE_FILE" ]; then
if ( umask 022 && :> "$_debug_file" ); then
f_dprintf "Successfully initialized debugFile \`%s'" \
"$_debug_file"