mirror of
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initial commit
This commit is contained in:
longpanda
538
VBLADE/vblade-master/contrib/vblade-17-aio.2.diff
Normal file
538
VBLADE/vblade-master/contrib/vblade-17-aio.2.diff
Normal file
@@ -0,0 +1,538 @@
|
||||
diff -uprN vblade-17.orig/aoe.c vblade-17/aoe.c
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--- vblade-17.orig/aoe.c 2008-06-09 10:53:07.000000000 -0400
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+++ vblade-17/aoe.c 2008-06-09 11:05:23.000000000 -0400
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@@ -8,6 +8,9 @@
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <netinet/in.h>
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+#include <errno.h>
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+#include <aio.h>
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+#include <poll.h>
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#include "dat.h"
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#include "fns.h"
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@@ -22,6 +25,11 @@ char config[Nconfig];
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int nconfig = 0;
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int maxscnt = 2;
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char *ifname;
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+int queuepipe[2];
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+int pktlen[Nplaces], pending[Nplaces];
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+Ata *pkt[Nplaces];
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+Ataregs regs[Nplaces];
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+struct aiocb aiocb[Nplaces];
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void
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aoead(int fd) // advertise the virtual blade
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@@ -78,32 +86,52 @@ getlba(uchar *p)
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}
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int
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-aoeata(Ata *p, int pktlen) // do ATA reqeust
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+aoeata(int place) // do ATA reqeust
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{
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- Ataregs r;
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- int len = 60;
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int n;
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+ int len = 60; // minimum ethernet packet size
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- r.lba = getlba(p->lba);
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- r.sectors = p->sectors;
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- r.feature = p->err;
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- r.cmd = p->cmd;
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- if (atacmd(&r, (uchar *)(p+1), maxscnt*512, pktlen - sizeof(*p)) < 0) {
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- p->h.flags |= Error;
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- p->h.error = BadArg;
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+ regs[place].lba = getlba(pkt[place]->lba);
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+ regs[place].sectors = pkt[place]->sectors;
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+ regs[place].feature = pkt[place]->err;
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+ regs[place].cmd = pkt[place]->cmd;
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+ n = atacmd(regs + place, (uchar *)(pkt[place] + 1), maxscnt*512,
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+ pktlen[place] - sizeof(Ata), aiocb + place);
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+ if (n < 0) {
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+ pkt[place]->h.flags |= Error;
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+ pkt[place]->h.error = BadArg;
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return len;
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+ } else if (n > 0) {
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+ pending[place] = 1;
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+ return 0;
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+ }
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+ if (!(pkt[place]->aflag & Write) && (n = pkt[place]->sectors)) {
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+ n -= regs[place].sectors;
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+ len = sizeof (Ata) + (n*512);
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}
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- if (!(p->aflag & Write))
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- if ((n = p->sectors)) {
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- n -= r.sectors;
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+ pkt[place]->sectors = regs[place].sectors;
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+ pkt[place]->err = regs[place].err;
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+ pkt[place]->cmd = regs[place].status;
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+ return len;
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+}
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+
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+int aoeatacomplete(int place, int pktlen)
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+{
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+ int n;
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+ int len = 60; // minimum ethernet packet size
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+ atacmdcomplete(regs + place, aiocb + place);
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+ if (!(pkt[place]->aflag & Write) && (n = pkt[place]->sectors)) {
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+ n -= regs[place].sectors;
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len = sizeof (Ata) + (n*512);
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}
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- p->sectors = r.sectors;
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- p->err = r.err;
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- p->cmd = r.status;
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+ pkt[place]->sectors = regs[place].sectors;
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+ pkt[place]->err = regs[place].err;
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+ pkt[place]->cmd = regs[place].status;
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+ pending[place] = 0;
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return len;
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}
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+
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#define QCMD(x) ((x)->vercmd & 0xf)
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// yes, this makes unnecessary copies.
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@@ -156,8 +184,9 @@ confcmd(Conf *p, int payload) // process
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}
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void
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-doaoe(Aoehdr *p, int n)
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+doaoe(int place)
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{
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+ Aoehdr *p = (Aoehdr *) pkt[place];
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int len;
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enum { // config query header size
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CHDR_SIZ = sizeof(Conf) - sizeof(((Conf *)0)->data),
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@@ -165,14 +194,16 @@ doaoe(Aoehdr *p, int n)
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switch (p->cmd) {
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case ATAcmd:
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- if (n < sizeof(Ata))
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+ if (pktlen[place] < sizeof(Ata))
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+ return;
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+ len = aoeata(place);
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+ if (len == 0)
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return;
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- len = aoeata((Ata*)p, n);
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break;
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case Config:
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- if (n < CHDR_SIZ)
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+ if (pktlen[place] < CHDR_SIZ)
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return;
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- len = confcmd((Conf *)p, n - CHDR_SIZ);
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+ len = confcmd((Conf *)p, pktlen[place] - CHDR_SIZ);
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if (len == 0)
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return;
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break;
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@@ -193,25 +224,129 @@ doaoe(Aoehdr *p, int n)
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}
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void
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+doaoecomplete(int place)
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+{
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+ Aoehdr *p = (Aoehdr *) pkt[place];
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+ int len = aoeatacomplete(place, pktlen[place]);
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+ memmove(p->dst, p->src, 6);
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+ memmove(p->src, mac, 6);
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+ p->maj = htons(shelf);
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+ p->min = slot;
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+ p->flags |= Resp;
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+ if (putpkt(sfd, (uchar *) p, len) == -1) {
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+ perror("write to network");
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+ exit(1);
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+ }
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+
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+}
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+
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+// allocate the buffer so that the ata data area
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+// is page aligned for o_direct on linux
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+
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+void *
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+bufalloc(void **buf, long len)
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+{
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+ long psize;
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+ unsigned long n;
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+
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+ psize = sysconf(_SC_PAGESIZE);
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+ if (psize == -1) {
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+ perror("sysconf");
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+ exit(EXIT_FAILURE);
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+ }
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+ n = len/psize + 3;
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+ *buf = malloc(psize * n);
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+ if (!*buf) {
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+ perror("malloc");
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+ exit(EXIT_FAILURE);
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+ }
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+ n = (unsigned long) *buf;
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+ n += psize * 2;
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+ n &= ~(psize - 1);
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+ return (void *) (n - sizeof (Ata));
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+}
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+
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+void
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+sigio(int signo)
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+{
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+ const char dummy = 0;
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+ write(queuepipe[1], &dummy, 1);
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+}
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+
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+void
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aoe(void)
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{
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Aoehdr *p;
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- uchar *buf;
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- int n, sh;
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+ char dummy;
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+ int n, place, sh;
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enum { bufsz = 1<<16, };
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-
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- buf = malloc(bufsz);
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+ sigset_t mask, oldmask;
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+ struct sigaction sigact;
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+ struct pollfd pollfds[2];
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+ void *freeme[Nplaces];
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+
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+ for (n = 0; n < Nplaces; n++) {
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+ pkt[n] = bufalloc(freeme + n, bufsz);
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+ pending[n] = 0;
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+ }
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aoead(sfd);
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+ pipe(queuepipe);
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+ fcntl(queuepipe[0], F_SETFL, O_NONBLOCK);
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+ fcntl(queuepipe[1], F_SETFL, O_NONBLOCK);
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+
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+ sigemptyset(&sigact.sa_mask);
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+ sigact.sa_flags = 0;
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+ sigact.sa_sigaction = (void *) sigio;
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+ sigaction(SIGIO, &sigact, NULL);
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+
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+ sigemptyset(&mask);
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+ sigaddset(&mask, SIGIO);
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+ sigprocmask(SIG_BLOCK, &mask, &oldmask);
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+
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+ pollfds[0].fd = queuepipe[0];
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+ pollfds[1].fd = sfd;
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+ pollfds[0].events = pollfds[1].events = POLLIN;
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+
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for (;;) {
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- n = getpkt(sfd, buf, bufsz);
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- if (n < 0) {
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+ sigprocmask(SIG_SETMASK, &oldmask, NULL);
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+ n = poll(pollfds, 2, 1000);
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+ sigprocmask(SIG_BLOCK, &mask, NULL);
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+
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+ if (n < 0 && errno != EINTR) {
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+ perror("poll");
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+ continue;
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+ } else if (n == 0 || pollfds[0].revents & POLLIN) {
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+ while(read(queuepipe[0], &dummy, 1) > 0);
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+ for (place = 0; place < Nplaces; place++) {
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+ if (!pending[place])
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+ continue;
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+ if (aio_error(aiocb + place) == EINPROGRESS)
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+ continue;
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+ doaoecomplete(place);
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+ pollfds[1].events = POLLIN;
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+ }
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+ }
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+
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+ if ((pollfds[1].revents & POLLIN) == 0)
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+ continue;
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+
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+ for (place = 0; pending[place] && place < Nplaces; place++);
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+ if (place >= Nplaces) {
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+ pollfds[1].events = 0;
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+ continue;
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+ }
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+
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+ pktlen[place] = getpkt(sfd, (uchar *) pkt[place], bufsz);
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+ if (pktlen[place] < 0) {
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+ if (errno == EINTR)
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+ continue;
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perror("read network");
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exit(1);
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}
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- if (n < sizeof(Aoehdr))
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+ if (pktlen[place] < sizeof(Aoehdr))
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continue;
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- p = (Aoehdr *) buf;
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+ p = (Aoehdr *) pkt[place];
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if (ntohs(p->type) != 0x88a2)
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continue;
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if (p->flags & Resp)
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@@ -223,9 +358,10 @@ aoe(void)
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continue;
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if (nmasks && !maskok(p->src))
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continue;
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- doaoe(p, n);
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+ doaoe(place);
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}
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- free(buf);
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+ for (place = 0; place < Nplaces; place++)
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+ free(freeme[place]);
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}
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void
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@@ -317,7 +453,7 @@ main(int argc, char **argv)
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}
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if (s.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
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omode = O_RDWR;
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- bfd = open(argv[3], omode);
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+ bfd = opendisk(argv[3], omode);
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if (bfd == -1) {
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perror("open");
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exit(1);
|
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diff -uprN vblade-17.orig/ata.c vblade-17/ata.c
|
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--- vblade-17.orig/ata.c 2008-06-09 10:53:07.000000000 -0400
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+++ vblade-17/ata.c 2008-06-09 11:05:23.000000000 -0400
|
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@@ -3,6 +3,8 @@
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
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#include <sys/types.h>
|
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+#include <errno.h>
|
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+#include <aio.h>
|
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#include "dat.h"
|
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#include "fns.h"
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|
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@@ -98,7 +100,7 @@ atainit(void)
|
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* check for that.
|
||||
*/
|
||||
int
|
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-atacmd(Ataregs *p, uchar *dp, int ndp, int payload) // do the ata cmd
|
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+atacmd(Ataregs *p, uchar *dp, int ndp, int payload, struct aiocb *aiocb) // do the ata cmd
|
||||
{
|
||||
vlong lba;
|
||||
ushort *ip;
|
||||
@@ -155,14 +157,29 @@ atacmd(Ataregs *p, uchar *dp, int ndp, i
|
||||
return 0;
|
||||
}
|
||||
if (p->cmd == 0x20 || p->cmd == 0x24)
|
||||
- n = getsec(bfd, dp, lba, p->sectors);
|
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+ n = getsec(bfd, dp, lba, p->sectors, aiocb);
|
||||
else {
|
||||
// packet should be big enough to contain the data
|
||||
if (payload < 512 * p->sectors)
|
||||
return -1;
|
||||
- n = putsec(bfd, dp, lba, p->sectors);
|
||||
+ n = putsec(bfd, dp, lba, p->sectors, aiocb);
|
||||
}
|
||||
- n /= 512;
|
||||
+ if (n < 0) {
|
||||
+ p->err = ABRT;
|
||||
+ p->status = ERR|DRDY;
|
||||
+ p->lba += n;
|
||||
+ p->sectors -= n;
|
||||
+ return 0;
|
||||
+ }
|
||||
+ return 1; // callback expected
|
||||
+}
|
||||
+
|
||||
+
|
||||
+int
|
||||
+atacmdcomplete(Ataregs *p, struct aiocb *aiocb) // complete the ata cmd
|
||||
+{
|
||||
+ int n;
|
||||
+ n = aio_return(aiocb) / 512;
|
||||
if (n != p->sectors) {
|
||||
p->err = ABRT;
|
||||
p->status = ERR;
|
||||
@@ -173,4 +190,3 @@ atacmd(Ataregs *p, uchar *dp, int ndp, i
|
||||
p->sectors -= n;
|
||||
return 0;
|
||||
}
|
||||
-
|
||||
diff -uprN vblade-17.orig/dat.h vblade-17/dat.h
|
||||
--- vblade-17.orig/dat.h 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/dat.h 2008-06-09 11:05:23.000000000 -0400
|
||||
@@ -111,6 +111,8 @@ enum {
|
||||
Nconfig = 1024,
|
||||
|
||||
Bufcount = 16,
|
||||
+
|
||||
+ Nplaces = 32,
|
||||
};
|
||||
|
||||
int shelf, slot;
|
||||
diff -uprN vblade-17.orig/fns.h vblade-17/fns.h
|
||||
--- vblade-17.orig/fns.h 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/fns.h 2008-06-09 11:07:21.000000000 -0400
|
||||
@@ -15,7 +15,8 @@ int maskok(uchar *);
|
||||
// ata.c
|
||||
|
||||
void atainit(void);
|
||||
-int atacmd(Ataregs *, uchar *, int, int);
|
||||
+int atacmd(Ataregs *, uchar *, int, int, struct aiocb *);
|
||||
+int atacmdcomplete(Ataregs *, struct aiocb *);
|
||||
|
||||
// bpf.c
|
||||
|
||||
@@ -26,8 +27,9 @@ void free_bpf_program(void *);
|
||||
|
||||
int dial(char *);
|
||||
int getea(int, char *, uchar *);
|
||||
-int putsec(int, uchar *, vlong, int);
|
||||
-int getsec(int, uchar *, vlong, int);
|
||||
+int opendisk(const char *, int);
|
||||
+int putsec(int, uchar *, vlong, int, struct aiocb *);
|
||||
+int getsec(int, uchar *, vlong, int, struct aiocb *);
|
||||
int putpkt(int, uchar *, int);
|
||||
int getpkt(int, uchar *, int);
|
||||
vlong getsize(int);
|
||||
diff -uprN vblade-17.orig/freebsd.c vblade-17/freebsd.c
|
||||
--- vblade-17.orig/freebsd.c 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/freebsd.c 2008-06-09 11:05:23.000000000 -0400
|
||||
@@ -209,19 +209,40 @@ getea(int s, char *eth, uchar *ea)
|
||||
return(0);
|
||||
}
|
||||
|
||||
-
|
||||
int
|
||||
-getsec(int fd, uchar *place, vlong lba, int nsec)
|
||||
+opendisk(const char *disk, int omode)
|
||||
{
|
||||
- return pread(fd, place, nsec * 512, lba * 512);
|
||||
+ return open(disk, omode);
|
||||
}
|
||||
|
||||
int
|
||||
-putsec(int fd, uchar *place, vlong lba, int nsec)
|
||||
-{
|
||||
- return pwrite(fd, place, nsec * 512, lba * 512);
|
||||
+getsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
|
||||
+{
|
||||
+ bzero((char *) aiocb, sizeof(struct aiocb));
|
||||
+ aiocb->aio_fildes = fd;
|
||||
+ aiocb->aio_buf = place;
|
||||
+ aiocb->aio_nbytes = nsec * 512;
|
||||
+ aiocb->aio_offset = lba * 512;
|
||||
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
|
||||
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
|
||||
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
|
||||
+ return aio_read(aiocb);
|
||||
}
|
||||
|
||||
+int
|
||||
+putsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
|
||||
+{
|
||||
+ bzero((char *) aiocb, sizeof(struct aiocb));
|
||||
+ aiocb->aio_fildes = fd;
|
||||
+ aiocb->aio_buf = place;
|
||||
+ aiocb->aio_nbytes = nsec * 512;
|
||||
+ aiocb->aio_offset = lba * 512;
|
||||
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
|
||||
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
|
||||
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
|
||||
+ return aio_write(aiocb);
|
||||
+}
|
||||
+
|
||||
static int pktn = 0;
|
||||
static uchar *pktbp = NULL;
|
||||
|
||||
diff -uprN vblade-17.orig/linux.c vblade-17/linux.c
|
||||
--- vblade-17.orig/linux.c 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/linux.c 2008-06-09 11:05:23.000000000 -0400
|
||||
@@ -1,5 +1,6 @@
|
||||
// linux.c: low level access routines for Linux
|
||||
#include "config.h"
|
||||
+#define _GNU_SOURCE
|
||||
#include <sys/socket.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
@@ -22,6 +23,9 @@
|
||||
#include <netinet/in.h>
|
||||
#include <linux/fs.h>
|
||||
#include <sys/stat.h>
|
||||
+#include <fcntl.h>
|
||||
+#include <errno.h>
|
||||
+#include <aio.h>
|
||||
|
||||
#include "dat.h"
|
||||
#include "fns.h"
|
||||
@@ -29,8 +33,6 @@
|
||||
int getindx(int, char *);
|
||||
int getea(int, char *, uchar *);
|
||||
|
||||
-
|
||||
-
|
||||
int
|
||||
dial(char *eth) // get us a raw connection to an interface
|
||||
{
|
||||
@@ -84,7 +86,7 @@ getea(int s, char *name, uchar *ea)
|
||||
struct ifreq xx;
|
||||
int n;
|
||||
|
||||
- strcpy(xx.ifr_name, name);
|
||||
+ strcpy(xx.ifr_name, name);
|
||||
n = ioctl(s, SIOCGIFHWADDR, &xx);
|
||||
if (n == -1) {
|
||||
perror("Can't get hw addr");
|
||||
@@ -110,17 +112,37 @@ getmtu(int s, char *name)
|
||||
}
|
||||
|
||||
int
|
||||
-getsec(int fd, uchar *place, vlong lba, int nsec)
|
||||
+opendisk(const char *disk, int omode)
|
||||
+{
|
||||
+ return open(disk, omode|O_DIRECT);
|
||||
+}
|
||||
+
|
||||
+int
|
||||
+getsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
|
||||
{
|
||||
- lseek(fd, lba * 512, 0);
|
||||
- return read(fd, place, nsec * 512);
|
||||
+ bzero((char *) aiocb, sizeof(struct aiocb));
|
||||
+ aiocb->aio_fildes = fd;
|
||||
+ aiocb->aio_buf = place;
|
||||
+ aiocb->aio_nbytes = nsec * 512;
|
||||
+ aiocb->aio_offset = lba * 512;
|
||||
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
|
||||
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
|
||||
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
|
||||
+ return aio_read(aiocb);
|
||||
}
|
||||
|
||||
int
|
||||
-putsec(int fd, uchar *place, vlong lba, int nsec)
|
||||
+putsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
|
||||
{
|
||||
- lseek(fd, lba * 512, 0);
|
||||
- return write(fd, place, nsec * 512);
|
||||
+ bzero((char *) aiocb, sizeof(struct aiocb));
|
||||
+ aiocb->aio_fildes = fd;
|
||||
+ aiocb->aio_buf = place;
|
||||
+ aiocb->aio_nbytes = nsec * 512;
|
||||
+ aiocb->aio_offset = lba * 512;
|
||||
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
|
||||
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
|
||||
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
|
||||
+ return aio_write(aiocb);
|
||||
}
|
||||
|
||||
int
|
||||
diff -uprN vblade-17.orig/linux.h vblade-17/linux.h
|
||||
--- vblade-17.orig/linux.h 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/linux.h 2008-06-09 11:05:23.000000000 -0400
|
||||
@@ -6,6 +6,6 @@ typedef long long vlong;
|
||||
int dial(char *);
|
||||
int getindx(int, char *);
|
||||
int getea(int, char *, uchar *);
|
||||
-int getsec(int, uchar *, vlong, int);
|
||||
-int putsec(int, uchar *, vlong, int);
|
||||
+int getsec(int, uchar *, vlong, int, struct aiocb *);
|
||||
+int putsec(int, uchar *, vlong, int, struct aiocb *);
|
||||
vlong getsize(int);
|
||||
diff -uprN vblade-17.orig/makefile vblade-17/makefile
|
||||
--- vblade-17.orig/makefile 2008-06-09 10:53:07.000000000 -0400
|
||||
+++ vblade-17/makefile 2008-06-09 11:05:23.000000000 -0400
|
||||
@@ -13,7 +13,7 @@ CFLAGS += -Wall -g -O2
|
||||
CC = gcc
|
||||
|
||||
vblade: $O
|
||||
- ${CC} -o vblade $O
|
||||
+ ${CC} -lrt -o vblade $O
|
||||
|
||||
aoe.o : aoe.c config.h dat.h fns.h makefile
|
||||
${CC} ${CFLAGS} -c $<
|
||||
Reference in New Issue
Block a user