int
msync_f(
int argc,
char **argv)
{
off64_t offset;
ssize_t length;
void *start;
int c, flags = 0;
size_t blocksize, sectsize;
while ((c = getopt(argc, argv, "ais")) != EOF) {
switch (c) {
case 'a':
flags |= MS_ASYNC;
break;
case 'i':
flags |= MS_INVALIDATE;
break;
case 's':
flags |= MS_SYNC;
break;
default:
return command_usage(&msync_cmd);
}
}
if (optind == argc) {
offset = mapping->offset;
length = mapping->length;
} else if (optind == argc - 2) {
init_cvtnum(&blocksize, §size);
offset = cvtnum(blocksize, sectsize, argv[optind]);
if (offset < 0) {
printf(_("non-numeric offset argument -- %s\n"),
argv[optind]);
return 0;
}
optind++;
length = cvtnum(blocksize, sectsize, argv[optind]);
if (length < 0) {
printf(_("non-numeric length argument -- %s\n"),
argv[optind]);
return 0;
}
} else {
return command_usage(&msync_cmd);
}
start = check_mapping_range(mapping, offset, length, 1);
if (!start)
return 0;
if (msync(start, length, flags) < 0)
perror("msync");
return 0;
}
int
madvise_f(
int argc,
char **argv)
{
off64_t offset, llength;
size_t length;
void *start;
int advise = MADV_NORMAL, c;
size_t blocksize, sectsize;
while ((c = getopt(argc, argv, "drsw")) != EOF) {
switch (c) {
case 'd': /* Don't need these pages */
advise = MADV_DONTNEED;
break;
case 'r': /* Expect random page references */
advise = MADV_RANDOM;
break;
case 's': /* Expect sequential page references */
advise = MADV_SEQUENTIAL;
break;
case 'w': /* Will need these pages */
advise = MADV_WILLNEED;
break;
default:
return command_usage(&madvise_cmd);
}
}
if (optind == argc) {
offset = mapping->offset;
length = mapping->length;
} else if (optind == argc - 2) {
init_cvtnum(&blocksize, §size);
offset = cvtnum(blocksize, sectsize, argv[optind]);
if (offset < 0) {
printf(_("non-numeric offset argument -- %s\n"),
argv[optind]);
return 0;
}
optind++;
llength = cvtnum(blocksize, sectsize, argv[optind]);
if (llength < 0) {
printf(_("non-numeric length argument -- %s\n"),
argv[optind]);
return 0;
} else if (llength > (size_t)llength) {
printf(_("length argument too large -- %lld\n"),
(long long)llength);
return 0;
} else
length = (size_t)llength;
} else {
return command_usage(&madvise_cmd);
}
start = check_mapping_range(mapping, offset, length, 1);
if (!start)
return 0;
if (madvise(start, length, advise) < 0) {
perror("madvise");
return 0;
}
return 0;
}
int
mincore_f(
int argc,
char **argv)
{
off64_t offset, llength;
size_t length;
size_t blocksize, sectsize;
void *start;
void *current, *previous;
unsigned char *vec;
int i;
if (argc == 1) {
offset = mapping->offset;
length = mapping->length;
} else if (argc == 3) {
init_cvtnum(&blocksize, §size);
offset = cvtnum(blocksize, sectsize, argv[1]);
if (offset < 0) {
printf(_("non-numeric offset argument -- %s\n"),
argv[1]);
return 0;
}
llength = cvtnum(blocksize, sectsize, argv[2]);
if (llength < 0) {
printf(_("non-numeric length argument -- %s\n"),
argv[2]);
return 0;
} else if (llength > (size_t)llength) {
printf(_("length argument too large -- %lld\n"),
(long long)llength);
return 0;
} else
length = (size_t)llength;
} else {
return command_usage(&mincore_cmd);
}
start = check_mapping_range(mapping, offset, length, 1);
if (!start)
return 0;
vec = calloc(length/pagesize, sizeof(unsigned char));
if (!vec) {
perror("calloc");
return 0;
}
if (mincore(start, length, vec) < 0) {
perror("mincore");
free(vec);
return 0;
}
previous = NULL;
current = start;
for (i = 0; i < length/pagesize; i++, current += pagesize) {
if (vec[i]) {
if (!previous) { /* print start address */
printf("0x%lx - ", (unsigned long)current);
previous = start + (i * pagesize);
}
} else if (previous) { /* print end and page count */
printf(_("0x%lx %lu pages (%llu : %lu)\n"),
(unsigned long)current,
(unsigned long)(current - previous) / pagesize,
(unsigned long long)offset +
(unsigned long long)(previous - start),
(unsigned long)(current - previous));
previous = NULL;
}
}
if (previous)
printf(_("0x%lx %lu pages (%llu : %lu)\n"),
(unsigned long)current,
(unsigned long)(current - previous) / pagesize,
(unsigned long long)offset +
(unsigned long long)(previous - start),
(unsigned long)(current - previous));
free(vec);
return 0;
}
int
mwrite_f(
int argc,
char **argv)
{
off64_t offset, tmp;
ssize_t length;
void *start;
char *sp;
int seed = 'X';
int rflag = 0;
int c;
size_t blocksize, sectsize;
while ((c = getopt(argc, argv, "rS:")) != EOF) {
switch (c) {
case 'r':
rflag = 1;
break;
case 'S':
seed = (int)strtol(optarg, &sp, 0);
if (!sp || sp == optarg) {
printf(_("non-numeric seed -- %s\n"), optarg);
return 0;
}
break;
default:
return command_usage(&mwrite_cmd);
}
}
if (optind == argc) {
offset = mapping->offset;
length = mapping->length;
} else if (optind == argc - 2) {
init_cvtnum(&blocksize, §size);
offset = cvtnum(blocksize, sectsize, argv[optind]);
if (offset < 0) {
printf(_("non-numeric offset argument -- %s\n"),
argv[optind]);
return 0;
}
optind++;
length = cvtnum(blocksize, sectsize, argv[optind]);
if (length < 0) {
printf(_("non-numeric length argument -- %s\n"),
argv[optind]);
return 0;
}
} else {
return command_usage(&mwrite_cmd);
}
start = check_mapping_range(mapping, offset, length, 0);
if (!start)
return 0;
offset -= mapping->offset;
if (rflag) {
for (tmp = offset + length -1; tmp >= offset; tmp--)
((char *)mapping->addr)[tmp] = seed;
} else {
for (tmp = offset; tmp < offset + length; tmp++)
((char *)mapping->addr)[tmp] = seed;
}
return 0;
}
int
mread_f(
int argc,
char **argv)
{
off64_t offset, tmp, dumpoffset, printoffset;
ssize_t length;
size_t dumplen, cnt = 0;
char *bp;
void *start;
int dump = 0, rflag = 0, c;
size_t blocksize, sectsize;
while ((c = getopt(argc, argv, "frv")) != EOF) {
switch (c) {
case 'f':
dump = 2; /* file offset dump */
break;
case 'r':
rflag = 1; /* read in reverse */
break;
case 'v':
dump = 1; /* mapping offset dump */
break;
default:
return command_usage(&mread_cmd);
}
}
if (optind == argc) {
offset = mapping->offset;
length = mapping->length;
} else if (optind == argc - 2) {
init_cvtnum(&blocksize, §size);
offset = cvtnum(blocksize, sectsize, argv[optind]);
if (offset < 0) {
printf(_("non-numeric offset argument -- %s\n"),
argv[optind]);
return 0;
}
optind++;
length = cvtnum(blocksize, sectsize, argv[optind]);
if (length < 0) {
printf(_("non-numeric length argument -- %s\n"),
argv[optind]);
return 0;
}
} else {
return command_usage(&mread_cmd);
}
start = check_mapping_range(mapping, offset, length, 0);
if (!start)
return 0;
dumpoffset = offset - mapping->offset;
if (dump == 2)
printoffset = offset;
else
printoffset = dumpoffset;
if (alloc_buffer(pagesize, 0, 0) < 0)
return 0;
bp = (char *)buffer;
dumplen = length % pagesize;
if (!dumplen)
dumplen = pagesize;
if (rflag) {
for (tmp = length - 1, c = 0; tmp >= 0; tmp--, c = 1) {
*bp = *(((char *)mapping->addr) + dumpoffset + tmp);
cnt++;
if (c && cnt == dumplen) {
if (dump) {
dump_buffer(printoffset, dumplen);
printoffset += dumplen;
}
bp = (char *)buffer;
dumplen = pagesize;
cnt = 0;
} else {
bp++;
}
}
} else {
for (tmp = 0, c = 0; tmp < length; tmp++, c = 1) {
*bp = *(((char *)mapping->addr) + dumpoffset + tmp);
cnt++;
if (c && cnt == dumplen) {
if (dump)
dump_buffer(printoffset + tmp -
(dumplen - 1), dumplen);
bp = (char *)buffer;
dumplen = pagesize;
cnt = 0;
} else {
bp++;
}
}
}
return 0;
}