Save 0.5K.
This commit is contained in:
Manuel Novoa III
parent
546f21aa2d
commit
b1d5b741ac
@ -15,7 +15,7 @@
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* that either displays or sets the characteristics of
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* one or more of the system's networking interfaces.
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*
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* Version: $Id: interface.c,v 1.18 2003/07/28 06:35:32 andersen Exp $
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* Version: $Id: interface.c,v 1.19 2003/08/02 00:04:18 mjn3 Exp $
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*
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* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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* and others. Copyright 1993 MicroWalt Corporation
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@ -87,8 +87,6 @@
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#define new(p) ((p) = xcalloc(1,sizeof(*(p))))
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#define KRELEASE(maj,min,patch) ((maj) * 65536 + (min)*256 + (patch))
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static int procnetdev_vsn = 1;
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#ifdef HAVE_HWSLIP
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#include <net/if_slip.h>
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#endif
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@ -1021,71 +1019,76 @@ static char *get_name(char *name, char *p)
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return p;
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}
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static int get_dev_fields(char *bp, struct interface *ife)
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/* If scanf supports size qualifiers for %n conversions, then we can
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* use a modified fmt that simply stores the position in the fields
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* having no associated fields in the proc string. Of course, we need
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* to zero them again when we're done. But that is smaller than the
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* old approach of multiple scanf occurrences with large numbers of
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* args. */
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/* static const char *ss_fmt[] = { */
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/* "%Ln%Lu%lu%lu%lu%lu%ln%ln%Ln%Lu%lu%lu%lu%lu%lu", */
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/* "%Lu%Lu%lu%lu%lu%lu%ln%ln%Lu%Lu%lu%lu%lu%lu%lu", */
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/* "%Lu%Lu%lu%lu%lu%lu%lu%lu%Lu%Lu%lu%lu%lu%lu%lu%lu" */
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/* }; */
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/* Lie about the size of the int pointed to for %n. */
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#if INT_MAX == LONG_MAX
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static const char *ss_fmt[] = {
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"%n%Lu%u%u%u%u%n%n%n%Lu%u%u%u%u%u",
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"%Lu%Lu%u%u%u%u%n%n%Lu%Lu%u%u%u%u%u",
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"%Lu%Lu%u%u%u%u%u%u%Lu%Lu%u%u%u%u%u%u"
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};
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#else
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static const char *ss_fmt[] = {
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"%n%Lu%lu%lu%lu%lu%n%n%n%Lu%lu%lu%lu%lu%lu",
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"%Lu%Lu%lu%lu%lu%lu%n%n%Lu%Lu%lu%lu%lu%lu%lu",
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"%Lu%Lu%lu%lu%lu%lu%lu%lu%Lu%Lu%lu%lu%lu%lu%lu%lu"
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};
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#endif
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static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn)
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{
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switch (procnetdev_vsn) {
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case 3:
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sscanf(bp,
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"%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
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&ife->stats.rx_bytes,
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memset(&ife->stats, 0, sizeof(struct user_net_device_stats));
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sscanf(bp, ss_fmt[procnetdev_vsn],
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&ife->stats.rx_bytes, /* missing for 0 */
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&ife->stats.rx_packets,
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&ife->stats.rx_errors,
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&ife->stats.rx_dropped,
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&ife->stats.rx_fifo_errors,
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&ife->stats.rx_frame_errors,
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&ife->stats.rx_compressed,
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&ife->stats.rx_multicast,
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&ife->stats.tx_bytes,
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&ife->stats.rx_compressed, /* missing for <= 1 */
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&ife->stats.rx_multicast, /* missing for <= 1 */
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&ife->stats.tx_bytes, /* missing for 0 */
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&ife->stats.tx_packets,
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&ife->stats.tx_errors,
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&ife->stats.tx_dropped,
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&ife->stats.tx_fifo_errors,
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&ife->stats.collisions,
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&ife->stats.tx_carrier_errors, &ife->stats.tx_compressed);
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break;
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case 2:
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sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
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&ife->stats.rx_bytes,
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&ife->stats.rx_packets,
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&ife->stats.rx_errors,
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&ife->stats.rx_dropped,
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&ife->stats.rx_fifo_errors,
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&ife->stats.rx_frame_errors,
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&ife->stats.tx_bytes,
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&ife->stats.tx_packets,
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&ife->stats.tx_errors,
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&ife->stats.tx_dropped,
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&ife->stats.tx_fifo_errors,
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&ife->stats.collisions, &ife->stats.tx_carrier_errors);
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ife->stats.rx_multicast = 0;
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break;
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case 1:
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sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
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&ife->stats.rx_packets,
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&ife->stats.rx_errors,
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&ife->stats.rx_dropped,
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&ife->stats.rx_fifo_errors,
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&ife->stats.rx_frame_errors,
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&ife->stats.tx_packets,
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&ife->stats.tx_errors,
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&ife->stats.tx_dropped,
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&ife->stats.tx_fifo_errors,
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&ife->stats.collisions, &ife->stats.tx_carrier_errors);
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&ife->stats.tx_carrier_errors,
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&ife->stats.tx_compressed /* missing for <= 1 */
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);
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if (procnetdev_vsn <= 1) {
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if (procnetdev_vsn == 0) {
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ife->stats.rx_bytes = 0;
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ife->stats.tx_bytes = 0;
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ife->stats.rx_multicast = 0;
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break;
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}
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return 0;
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ife->stats.rx_multicast = 0;
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ife->stats.rx_compressed = 0;
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ife->stats.tx_compressed = 0;
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}
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}
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static inline int procnetdev_version(char *buf)
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{
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if (strstr(buf, "compressed"))
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return 3;
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if (strstr(buf, "bytes"))
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return 2;
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if (strstr(buf, "bytes"))
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return 1;
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return 0;
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}
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static int if_readlist_proc(char *target)
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@ -1094,7 +1097,7 @@ static int if_readlist_proc(char *target)
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FILE *fh;
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char buf[512];
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struct interface *ife;
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int err;
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int err, procnetdev_vsn;
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if (proc_read)
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return 0;
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@ -1109,28 +1112,7 @@ static int if_readlist_proc(char *target)
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fgets(buf, sizeof buf, fh); /* eat line */
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fgets(buf, sizeof buf, fh);
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#if 0 /* pretty, but can't cope with missing fields */
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fmt = proc_gen_fmt(_PATH_PROCNET_DEV, 1, fh, "face", "", /* parsed separately */
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"bytes", "%lu",
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"packets", "%lu",
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"errs", "%lu",
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"drop", "%lu",
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"fifo", "%lu",
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"frame", "%lu",
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"compressed", "%lu",
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"multicast", "%lu",
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"bytes", "%lu",
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"packets", "%lu",
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"errs", "%lu",
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"drop", "%lu",
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"fifo", "%lu",
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"colls", "%lu",
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"carrier", "%lu", "compressed", "%lu", NULL);
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if (!fmt)
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return -1;
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#else
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procnetdev_vsn = procnetdev_version(buf);
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#endif
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err = 0;
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while (fgets(buf, sizeof buf, fh)) {
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@ -1138,7 +1120,7 @@ static int if_readlist_proc(char *target)
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s = get_name(name, buf);
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ife = add_interface(name);
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get_dev_fields(s, ife);
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get_dev_fields(s, ife, procnetdev_vsn);
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ife->statistics_valid = 1;
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if (target && !strcmp(target, name))
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break;
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@ -1148,9 +1130,6 @@ static int if_readlist_proc(char *target)
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err = -1;
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proc_read = 0;
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}
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#if 0
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free(fmt);
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#endif
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fclose(fh);
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return err;
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}
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@ -1670,7 +1649,8 @@ static void hwinit()
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#endif /* KEEP_UNUSED */
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#ifdef IFF_PORTSEL
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static const char *if_port_text[][4] = {
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#if 0
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static const char * const if_port_text[][4] = {
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/* Keep in step with <linux/netdevice.h> */
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{"unknown", NULL, NULL, NULL},
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{"10base2", "bnc", "coax", NULL},
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@ -1681,6 +1661,19 @@ static const char *if_port_text[][4] = {
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{"100baseFX", NULL, NULL, NULL},
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{NULL, NULL, NULL, NULL},
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};
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#else
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static const char * const if_port_text[] = {
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/* Keep in step with <linux/netdevice.h> */
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"unknown",
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"10base2",
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"10baseT",
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"AUI",
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"100baseT",
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"100baseTX",
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"100baseFX",
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NULL
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};
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#endif
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#endif
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/* Check our hardware type table for this type. */
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@ -1714,29 +1707,83 @@ static int hw_null_address(struct hwtype *hw, void *ap)
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return 1;
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}
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static const char TRext[] = "\0\0k\0M";
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#warning devel code
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static const char TRext[] = "\0\0\0Ki\0Mi\0Gi\0Ti";
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static void print_bytes_scaled(unsigned long long ull, const char *end)
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{
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unsigned long long int_part;
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unsigned long frac_part;
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const char *ext;
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unsigned int frac_part;
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int i;
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frac_part = 0;
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ext = TRext;
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int_part = ull;
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for (i = 0; i < 2; i++) {
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if (int_part >= 1024) {
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frac_part = ((int_part % 1024) * 10) / 1024;
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i = 4;
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do {
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#if 0
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/* This does correct rounding and is a little larger. But it
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* uses KiB as the smallest displayed unit. */
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if ((int_part < (1024*1024 - 51)) || !--i) {
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i = 0;
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int_part += 51; /* 1024*.05 = 51.2 */
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frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
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}
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int_part /= 1024;
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ext += 2; /* Kb, Mb */
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}
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ext += 3; /* KiB, MiB, GiB, TiB */
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#else
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if (int_part >= 1024) {
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frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
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int_part /= 1024;
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ext += 3; /* KiB, MiB, GiB, TiB */
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}
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--i;
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#endif
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} while (i);
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printf("X bytes:%Lu (%Lu.%lu %siB)%s", ull, int_part, frac_part, ext, end);
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printf("X bytes:%Lu (%Lu.%u %sB)%s", ull, int_part, frac_part, ext, end);
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}
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static const char * const ife_print_flags_strs[] = {
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"UP ",
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"BROADCAST ",
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"DEBUG ",
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"LOOPBACK ",
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"POINTOPOINT ",
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"NOTRAILERS ",
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"RUNNING ",
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"NOARP ",
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"PROMISC ",
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"ALLMULTI ",
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"SLAVE ",
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"MASTER ",
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"MULTICAST ",
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#ifdef HAVE_DYNAMIC
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"DYNAMIC "
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#endif
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};
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static const unsigned short ife_print_flags_mask[] = {
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IFF_UP,
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IFF_BROADCAST,
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IFF_DEBUG,
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IFF_LOOPBACK,
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IFF_POINTOPOINT,
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IFF_NOTRAILERS,
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IFF_RUNNING,
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IFF_NOARP,
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IFF_PROMISC,
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IFF_ALLMULTI,
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IFF_SLAVE,
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IFF_MASTER,
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IFF_MULTICAST,
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#ifdef HAVE_DYNAMIC
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IFF_DYNAMIC
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#endif
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0
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};
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static void ife_print(struct interface *ptr)
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{
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struct aftype *ap;
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@ -1782,7 +1829,7 @@ static void ife_print(struct interface *ptr)
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printf(_("HWaddr %s "), hw->print(ptr->hwaddr));
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#ifdef IFF_PORTSEL
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if (ptr->flags & IFF_PORTSEL) {
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printf(_("Media:%s"), if_port_text[ptr->map.port][0]);
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printf(_("Media:%s"), if_port_text[ptr->map.port] /* [0] */);
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if (ptr->flags & IFF_AUTOMEDIA)
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printf(_("(auto)"));
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}
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@ -1907,38 +1954,18 @@ static void ife_print(struct interface *ptr)
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printf(" ");
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/* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
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if (ptr->flags == 0)
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if (ptr->flags == 0) {
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printf(_("[NO FLAGS] "));
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if (ptr->flags & IFF_UP)
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printf(_("UP "));
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if (ptr->flags & IFF_BROADCAST)
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printf(_("BROADCAST "));
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if (ptr->flags & IFF_DEBUG)
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printf(_("DEBUG "));
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if (ptr->flags & IFF_LOOPBACK)
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printf(_("LOOPBACK "));
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if (ptr->flags & IFF_POINTOPOINT)
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printf(_("POINTOPOINT "));
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if (ptr->flags & IFF_NOTRAILERS)
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printf(_("NOTRAILERS "));
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if (ptr->flags & IFF_RUNNING)
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printf(_("RUNNING "));
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if (ptr->flags & IFF_NOARP)
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printf(_("NOARP "));
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if (ptr->flags & IFF_PROMISC)
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printf(_("PROMISC "));
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if (ptr->flags & IFF_ALLMULTI)
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printf(_("ALLMULTI "));
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if (ptr->flags & IFF_SLAVE)
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printf(_("SLAVE "));
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if (ptr->flags & IFF_MASTER)
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printf(_("MASTER "));
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if (ptr->flags & IFF_MULTICAST)
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printf(_("MULTICAST "));
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#ifdef HAVE_DYNAMIC
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if (ptr->flags & IFF_DYNAMIC)
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printf(_("DYNAMIC "));
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#endif
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} else {
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int i = 0;
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do {
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if (ptr->flags & ife_print_flags_mask[i]) {
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printf(_(ife_print_flags_strs[i]));
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}
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} while (ife_print_flags_mask[++i]);
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}
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/* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
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printf(_(" MTU:%d Metric:%d"), ptr->mtu, ptr->metric ? ptr->metric : 1);
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#ifdef SIOCSKEEPALIVE
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@ -1956,8 +1983,7 @@ static void ife_print(struct interface *ptr)
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*/
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printf(" ");
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printf(_
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("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
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printf(_("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
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ptr->stats.rx_packets, ptr->stats.rx_errors,
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ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
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ptr->stats.rx_frame_errors);
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@ -1965,8 +1991,7 @@ static void ife_print(struct interface *ptr)
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printf(_(" compressed:%lu\n"),
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ptr->stats.rx_compressed);
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printf(" ");
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printf(_
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("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
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printf(_("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
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ptr->stats.tx_packets, ptr->stats.tx_errors,
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ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
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ptr->stats.tx_carrier_errors);
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