| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 28 Aug 2015 13:45:41 -0400
From: Andy Gospodarek <gospo@...ulusnetworks.com>
To: netdev@...r.kernel.org
Cc: Stephen Hemminger <shemming@...cade.com>,
Andy Gospodarek <gospo@...ulusnetworks.com>
Subject: [PATCH iproute2 v3] add support for brief output for link and addresses
This adds support for slightly less output than is normally provided by
'ip link show' and 'ip addr show'. This is a bit better when you have a
host with lots of interfaces. Sample output:
$ ip -br link show
lo UNKNOWN 00:00:00:00:00:00 <LOOPBACK,UP,LOWER_UP>
p2p1 UP 08:00:27:ee:0b:3b <BROADCAST,MULTICAST,UP,LOWER_UP>
p7p1 UP 08:00:27:9d:62:9f <BROADCAST,MULTICAST,UP,LOWER_UP>
p8p1 DOWN 08:00:27:dc:d8:ca <NO-CARRIER,BROADCAST,MULTICAST,UP>
p9p1 UP 08:00:27:76:d9:75 <BROADCAST,MULTICAST,UP,LOWER_UP>
p7p1.100@...1 UP 08:00:27:9d:62:9f <BROADCAST,MULTICAST,UP,LOWER_UP>
$ ip -br -4 addr show
lo UNKNOWN 127.0.0.1/8
p2p1 UP 192.168.56.2/24
p7p1 UP 70.0.0.1/24
p8p1 DOWN 80.0.0.1/24
p9p1 UP 10.0.5.15/24
p7p1.100@...1 UP 200.0.0.1/24
$ ip -br -6 addr show
lo UNKNOWN ::1/128
p2p1 UP fe80::a00:27ff:feee:b3b/64
p7p1 UP 7000::1/8 fe80::a00:27ff:fe9d:629f/64
p8p1 DOWN 8000::1/8
p9p1 UP fe80::a00:27ff:fe76:d975/64
p7p1.100@...1 UP fe80::a00:27ff:fe9d:629f/64
$ ip -br addr show p7p1
p7p1 UP 70.0.0.1/24 7000::1/8 fe80::a00:27ff:fe9d:629f/64
v2: Now with color support!
v3: Better field width estimation (except netdev names to keep output at a
decent width) and whitespace fixup.
Signed-off-by: Andy Gospodarek <gospo@...ulusnetworks.com>
---
include/utils.h | 1 +
ip/ip.c | 5 +-
ip/ip_common.h | 3 +
ip/ipaddress.c | 150 +++++++++++++++++++++++++++++++++++++++++++-------
ip/iplink.c | 5 +-
man/man8/ip-link.8.in | 3 +-
6 files changed, 143 insertions(+), 24 deletions(-)
diff --git a/include/utils.h b/include/utils.h
index 0c57ccd..f77edeb 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -19,6 +19,7 @@ extern int show_details;
extern int show_raw;
extern int resolve_hosts;
extern int oneline;
+extern int brief;
extern int timestamp;
extern int timestamp_short;
extern const char * _SL_;
diff --git a/ip/ip.c b/ip/ip.c
index e75447e..eea00b8 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -32,6 +32,7 @@ int show_stats;
int show_details;
int resolve_hosts;
int oneline;
+int brief;
int timestamp;
const char *_SL_;
int force;
@@ -55,7 +56,7 @@ static void usage(void)
" -h[uman-readable] | -iec |\n"
" -f[amily] { inet | inet6 | ipx | dnet | mpls | bridge | link } |\n"
" -4 | -6 | -I | -D | -B | -0 |\n"
-" -l[oops] { maximum-addr-flush-attempts } |\n"
+" -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n"
" -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n"
" -rc[vbuf] [size] | -n[etns] name | -a[ll] | -c[olor]}\n");
exit(-1);
@@ -250,6 +251,8 @@ int main(int argc, char **argv)
if (argc <= 1)
usage();
batch_file = argv[1];
+ } else if (matches(opt, "-brief") == 0) {
+ ++brief;
} else if (matches(opt, "-rcvbuf") == 0) {
unsigned int size;
diff --git a/ip/ip_common.h b/ip/ip_common.h
index f120f5b..f74face 100644
--- a/ip/ip_common.h
+++ b/ip/ip_common.h
@@ -2,6 +2,9 @@ extern int get_operstate(const char *name);
extern int print_linkinfo(const struct sockaddr_nl *who,
struct nlmsghdr *n,
void *arg);
+extern int print_linkinfo_brief(const struct sockaddr_nl *who,
+ struct nlmsghdr *n,
+ void *arg);
extern int print_addrinfo(const struct sockaddr_nl *who,
struct nlmsghdr *n,
void *arg);
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 13d9c46..2aa5fbf 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -138,13 +138,22 @@ static void print_operstate(FILE *f, __u8 state)
if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
fprintf(f, "state %#x ", state);
else {
- fprintf(f, "state ");
- if (strcmp(oper_states[state], "UP") == 0)
- color_fprintf(f, COLOR_OPERSTATE_UP, "%s ", oper_states[state]);
- else if (strcmp(oper_states[state], "DOWN") == 0)
- color_fprintf(f, COLOR_OPERSTATE_DOWN, "%s ", oper_states[state]);
- else
- fprintf(f, "%s ", oper_states[state]);
+ if (brief) {
+ if (strcmp(oper_states[state], "UP") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_UP, "%-14s ", oper_states[state]);
+ else if (strcmp(oper_states[state], "DOWN") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_DOWN, "%-14s ", oper_states[state]);
+ else
+ fprintf(f, "%-14s ", oper_states[state]);
+ } else {
+ fprintf(f, "state ");
+ if (strcmp(oper_states[state], "UP") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_UP, "%s ", oper_states[state]);
+ else if (strcmp(oper_states[state], "DOWN") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_DOWN, "%s ", oper_states[state]);
+ else
+ fprintf(f, "%s ", oper_states[state]);
+ }
}
}
@@ -590,6 +599,88 @@ static void print_link_stats(FILE *fp, struct nlmsghdr *n)
fprintf(fp, "%s", _SL_);
}
+int print_linkinfo_brief(const struct sockaddr_nl *who,
+ struct nlmsghdr *n, void *arg)
+{
+ FILE *fp = (FILE*)arg;
+ struct ifinfomsg *ifi = NLMSG_DATA(n);
+ struct rtattr * tb[IFLA_MAX+1];
+ int len = n->nlmsg_len;
+ char *name;
+ char buf[32] = { 0, };
+ unsigned m_flag = 0;
+
+ if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
+ return -1;
+
+ len -= NLMSG_LENGTH(sizeof(*ifi));
+ if (len < 0)
+ return -1;
+
+ if (filter.ifindex && ifi->ifi_index != filter.ifindex)
+ return -1;
+ if (filter.up && !(ifi->ifi_flags&IFF_UP))
+ return -1;
+
+ parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
+ if (tb[IFLA_IFNAME] == NULL) {
+ fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
+ }
+ if (filter.label &&
+ (!filter.family || filter.family == AF_PACKET) &&
+ fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
+ return -1;
+
+ if (tb[IFLA_GROUP]) {
+ int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
+ if (filter.group != -1 && group != filter.group)
+ return -1;
+ }
+
+ if (n->nlmsg_type == RTM_DELLINK)
+ fprintf(fp, "Deleted ");
+
+ name = (char *)(tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
+
+ if (tb[IFLA_LINK]) {
+ SPRINT_BUF(b1);
+ int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
+ if (iflink == 0)
+ snprintf(buf, sizeof(buf), "%s@...E", name);
+ else {
+ snprintf(buf, sizeof(buf),
+ "%s@%s", name, ll_idx_n2a(iflink, b1));
+ m_flag = ll_index_to_flags(iflink);
+ m_flag = !(m_flag & IFF_UP);
+ }
+ } else
+ snprintf(buf, sizeof(buf), "%s", name);
+
+ fprintf(fp, "%-16s ", buf);
+
+ if (tb[IFLA_OPERSTATE])
+ print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
+
+ if (filter.family == AF_PACKET) {
+ SPRINT_BUF(b1);
+ if (tb[IFLA_ADDRESS]) {
+ color_fprintf(fp, COLOR_MAC, "%s ",
+ ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
+ RTA_PAYLOAD(tb[IFLA_ADDRESS]),
+ ifi->ifi_type,
+ b1, sizeof(b1)));
+ }
+ }
+
+ if (filter.family == AF_PACKET)
+ print_link_flags(fp, ifi->ifi_flags, m_flag);
+
+ if (filter.family == AF_PACKET)
+ fprintf(fp, "\n");
+ fflush(fp);
+ return 0;
+}
+
int print_linkinfo(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
@@ -892,18 +983,20 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
if (n->nlmsg_type == RTM_DELADDR)
fprintf(fp, "Deleted ");
- if (filter.oneline || filter.flushb)
- fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
- if (ifa->ifa_family == AF_INET)
- fprintf(fp, " inet ");
- else if (ifa->ifa_family == AF_INET6)
- fprintf(fp, " inet6 ");
- else if (ifa->ifa_family == AF_DECnet)
- fprintf(fp, " dnet ");
- else if (ifa->ifa_family == AF_IPX)
- fprintf(fp, " ipx ");
- else
- fprintf(fp, " family %d ", ifa->ifa_family);
+ if (!brief) {
+ if (filter.oneline || filter.flushb)
+ fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
+ if (ifa->ifa_family == AF_INET)
+ fprintf(fp, " inet ");
+ else if (ifa->ifa_family == AF_INET6)
+ fprintf(fp, " inet6 ");
+ else if (ifa->ifa_family == AF_DECnet)
+ fprintf(fp, " dnet ");
+ else if (ifa->ifa_family == AF_IPX)
+ fprintf(fp, " ipx ");
+ else
+ fprintf(fp, " family %d ", ifa->ifa_family);
+ }
if (rta_tb[IFA_LOCAL]) {
if (ifa->ifa_family == AF_INET)
@@ -936,6 +1029,9 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
}
}
+ if (brief)
+ goto brief_exit;
+
if (rta_tb[IFA_BROADCAST]) {
fprintf(fp, "brd %s ",
format_host(ifa->ifa_family,
@@ -1018,6 +1114,7 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
}
}
fprintf(fp, "\n");
+brief_exit:
fflush(fp);
return 0;
}
@@ -1078,6 +1175,10 @@ static int print_selected_addrinfo(struct ifinfomsg *ifi,
print_addrinfo(NULL, n, fp);
}
+ if (brief) {
+ fprintf(fp, "\n");
+ fflush(fp);
+ }
return 0;
}
@@ -1539,9 +1640,16 @@ static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
for (l = linfo.head; l; l = l->next) {
int res = 0;
+ struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
- if (no_link || (res = print_linkinfo(NULL, &l->h, stdout)) >= 0) {
- struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
+ if (brief) {
+ if (print_linkinfo_brief(NULL, &l->h, stdout) == 0)
+ if (filter.family != AF_PACKET)
+ print_selected_addrinfo(ifi,
+ ainfo.head,
+ stdout);
+ } else if (no_link ||
+ (res = print_linkinfo(NULL, &l->h, stdout)) >= 0) {
if (filter.family != AF_PACKET)
print_selected_addrinfo(ifi,
ainfo.head, stdout);
diff --git a/ip/iplink.c b/ip/iplink.c
index 8bc9f49..633b067 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -823,7 +823,10 @@ int iplink_get(unsigned int flags, char *name, __u32 filt_mask)
if (rtnl_talk(&rth, &req.n, &answer.n, sizeof(answer)) < 0)
return -2;
- print_linkinfo(NULL, &answer.n, stdout);
+ if (brief)
+ print_linkinfo_brief(NULL, &answer.n, stdout);
+ else
+ print_linkinfo(NULL, &answer.n, stdout);
return 0;
}
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index 68baba7..1896eb6 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -21,7 +21,8 @@ ip-link \- network device configuration
\fB\-r\fR[\fIesolve\fR] |
\fB\-f\fR[\fIamily\fR] {
.BR inet " | " inet6 " | " ipx " | " dnet " | " link " } | "
-\fB\-o\fR[\fIneline\fR] }
+\fB\-o\fR[\fIneline\fR] |
+\fB\-br\fR[\fIief\fR] }
.ti -8
.BI "ip link add"
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists