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Stop ipfw from aborting when asked to delete a table entry that

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doesn't exist or add one that is already present, if the -q flag
is set. Useful for "ipfw -q /dev/stdin" when the command above is
invoked from  something like python or TCL to feed commands
down the throat of ipfw.
MFC in: 1 week
This commit is contained in:
Julian Elischer 2006-02-14 03:10:29 +00:00
parent 085a0d43ca
commit 21899082ae
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=155639
2 changed files with 13 additions and 1 deletions
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3
sbin/ipfw/ipfw.8
View File

@ -232,7 +232,8 @@ commands in a script
.Ql sh\ /etc/rc.firewall ) ,
or by processing a file of many
.Nm
rules across a remote login session.
rules across a remote login session. It also stops a table add or delete
from failing if the entry already exists or is not present.
If a
.Cm flush
is performed in normal (verbose) mode (with the default kernel

11
sbin/ipfw/ipfw2.c
View File

@ -4815,6 +4815,17 @@ table_handler(int ac, char *av[])
ent.value = 0;
if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL,
&ent, sizeof(ent)) < 0)
/* If running silent, don't bomb out on these errors. */
if (!(do_quiet && (errno == (do_add ? EEXIST : ESRCH))))
err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)",
do_add ? "ADD" : "DEL");
/* In silent mode, react to a failed add by deleting */
if (do_add)
do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent));
if (do_cmd(IP_FW_TABLE_ADD,
&ent, sizeof(ent)) < 0)
err(EX_OSERR,
"setsockopt(IP_FW_TABLE_ADD)");
err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)",
do_add ? "ADD" : "DEL");
} else if (_substrcmp(*av, "flush") == 0) {