/*int strlenn(const char *s)
{
int a = 0;
while((s != NULL) && (*s != '\0'))
{
s++;
a++;
}
return a;
} */
int main(int argc, char *argv[])
{
printf("strlenn = %d\n", strlenn("ABSDS"));
printf("strlen(NULL) = %d\n", strlenn(NULL));
printf("strlen(\"\") = %d\n", strlenn(""));
return 0;
}
/**
* Get kmalloc'd array for full path name.
*/
static char * format_fpath(struct fatfs_inode * indir, const char * name)
{
char * fpath;
size_t fpath_size;
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG,
"format_fpath(indir \"%s\", name \"%s\")\n",
indir->in_fpath, name);
#endif
fpath_size = strlenn(name, NAME_MAX + 1) +
strlenn(indir->in_fpath, NAME_MAX + 1) + 6;
fpath = kmalloc(fpath_size);
if (!fpath)
return NULL;
ksprintf(fpath, fpath_size, "%s/%s", indir->in_fpath, name);
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG, "Formatted \"%s\" as \"%s\"\n",
name, fpath);
#endif
return fpath;
}
void * main(void * arg)
{
int r0, r1, r2;
const char tty_path[] = "/dev/ttyS0";
// char buf[80];
mkdir("/dev", S_IRWXU | S_IRGRP | S_IXGRP);
mount("", "/dev", "devfs", 0, "");
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
r0 = open(tty_path, O_RDONLY);
r1 = open(tty_path, O_WRONLY);
r2 = open(tty_path, O_WRONLY);
#if 0
ksprintf(buf, sizeof(buf), "fd: %i, %i, %i\n", r0, r1, r2);
write(STDOUT_FILENO, buf, strlenn(buf, sizeof(buf)));
#endif
write(STDOUT_FILENO, banner, sizeof(banner));
write(STDOUT_FILENO, msg, sizeof(msg));
#if configTISH != 0
tish();
#endif
while(1) {
write(STDOUT_FILENO, "init\n", 5);
sleep(10);
}
}
veryLong veryLong::operator+(veryLong n1)
{
veryLong n;
unsigned char *del;
if (!binary)
{
turn(&number);
turn(&n1.number);
del=n.number;
if ((znak=='+')&&(n1.znak=='+'))
{
n.number = summ(&number,&n1.number);
n.znak='+';
}
if ((znak=='-')&&(n1.znak=='-'))
{
n.number = summ(&number,&n1.number);
n.znak='-';
}
if ((znak=='+')&&(n1.znak=='-'))
{
if (cmp(&number,&n1.number) == 1)
{
n.number = sub(&number,&n1.number);
n.znak='+';
}
else
{
n.number = sub(&n1.number,&number);
n.znak='-';
}
}
if ((znak=='-')&&(n1.znak=='+'))
{
if (cmp(&number,&n1.number) == 1)
{
n.number = sub(&number,&n1.number);
n.znak='-';
}
else
{
n.number = sub(&n1.number,&number);
n.znak='+';
}
}
n.lenght = strlenn(&n.number);
n.binary=binary;
turn(&number);
turn(&n1.number);
turn(&n.number);
if (del != NULL)
free(del);
}
else
{
n.number = summb(&number,&n1.number,lenght,n1.lenght,&n.lenght);
n.binary=binary;
}
return n;
}
/************************************************
**递归方式实现测量
****************************************/
int strlenn(const char *s)
{
static int a = 0;
if(s == NULL)
{
return -1;
}
else
{
if(*s == '\0')
{
printf("%s \n", "end");
return 0;
}
else
{
s++;
printf("%s \n", s);
strlenn(s);
printf("%s \n", s);
a++;
return a;
}
}
}
veryLong veryLong::operator/(veryLong n1)
{
veryLong n;
unsigned char *ostatok;
int lenOst;
if (!binary)
{
if (((znak=='+')&&(n1.znak=='+'))||((znak=='-')&&(n1.znak=='-')))
{
n.number = divv(&number,&n1.number,&ostatok);
n.znak='+';
}
else
{
n.number = divv(&number,&n1.number,&ostatok);
n.znak='-';
}
n.lenght = strlenn(&n.number);
n.binary=binary;
}
else
{
turnb(&number,lenght);
turnb(&n1.number,n1.lenght);
n.number = divvb(&number,&n1.number,lenght,n1.lenght,&n.lenght,&ostatok,&lenOst);
n.binary=binary;
turnb(&number,lenght);
turnb(&n1.number,n1.lenght);
turnb(&n.number,n.lenght);
}
return n;
}
int parsenames(const char * pathname, char ** path, char ** name)
{
char * path_act;
char * fname;
size_t i, j;
KASSERT(pathname != NULL, "pathname should be set\n");
path_act = kstrdup(pathname, PATH_MAX);
fname = kmalloc(NAME_MAX);
if (!path_act || !fname) {
kfree(path_act);
kfree(fname);
return -ENOMEM;
}
i = strlenn(path_act, PATH_MAX);
if (path_act[i] != '\0')
goto fail;
while (path_act[i] != '/') {
path_act[i--] = '\0';
if ((i == 0) &&
(!(path_act[0] == '/') ||
!(path_act[0] == '.' && path_act[1] == '/'))) {
path_act[0] = '.';
path_act[1] = '/';
path_act[2] = '\0';
i--; /* little trick */
break;
}
}
for (j = 0; j < NAME_MAX;) {
i++;
if (pathname[i] == '/')
continue;
fname[j] = pathname[i];
if (fname[j] == '\0')
break;
j++;
}
if (fname[j] != '\0')
goto fail;
if (path)
*path = path_act;
if (name)
*name = fname;
return 0;
fail:
kfree(path_act);
kfree(fname);
return -ENAMETOOLONG;
}
veryLong veryLong::operator*(veryLong n1)
{
veryLong n;
if (!binary)
{
turn(&number);
if (&number != &n1.number)
turn(&n1.number);
if (((znak=='+')&&(n1.znak=='+'))||((znak=='-')&&(n1.znak=='-')))
{
n.number = mul(&number,&n1.number);
n.znak='+';
}
else
{
n.number = mul(&number,&n1.number);
n.znak='-';
}
n.lenght = strlenn(&n.number);
n.binary=binary;
turn(&number);
if (&number != &n1.number)
turn(&n1.number);
turn(&n.number);
}
else
{
n.number = mulb(&number,&n1.number,lenght,n1.lenght,&n.lenght);
n.binary=binary;
}
return n;
}
veryLong veryLong::operator-(veryLong n1)
{
veryLong n;
if (!binary)
{
turn(&number);
turn(&n1.number);
if ((znak=='+')&&(n1.znak=='+'))
{
if (cmp(&number,&n1.number) == 1)
{
n.number = sub(&number,&n1.number);
n.znak='+';
}
else
{
n.number = sub(&n1.number,&number);
n.znak='-';
}
}
if ((znak=='-')&&(n1.znak=='+'))
{
if (cmp(&number,&n1.number) == 1)
{
n.number = sub(&number,&n1.number);
n.znak='-';
}
else
{
n.number = sub(&n1.number,&number);
n.znak='+';
}
}
if ((znak=='+')&&(n1.znak=='-'))
{
n.number = summ(&number,&n1.number);
n.znak='+';
}
if ((znak=='-')&&(n1.znak=='+'))
{
n.number = summ(&number,&n1.number);
n.znak='-';
}
n.lenght = strlenn(&n.number);
n.binary=binary;
turn(&number);
turn(&n1.number);
turn(&n.number);
}
else
{
n.number = subb(&number,&n1.number,lenght,n1.lenght,&n.lenght);
n.binary=binary;
}
return n;
}
veryLong veryLong::operator=(const char* str)
{
int i;
(*this).number=(unsigned char*)malloc(block);
for (i=0;i<strlen(str);i++)
(*this).number[i]=str[i];
(*this).number[i]='\0';
(*this).lenght=strlenn(&(*this).number);
return *this;
}
I getdelim_(S *s,I *n,I d,FILE *f)
{
I m; S z;size_t o=*n;
if(getdelim(s,&o,d,f)==-1){*n=0; R -1;}
*n=o;
m=strlenn(*s,*n);
if(1<m && '\n'==(*s)[m-1] && '\r'==(*s)[m-2]) {
(*s)[--m]='\0'; (*s)[m-1]='\n'; }
z=strdupn(*s,m);
free(*s);
*s=z;
R *n=m;
}
size_t asccpyn(wchar_t* buffer, size_t buflen,
const char* source, size_t srclen) {
if (buflen <= 0)
return 0;
if (srclen == SIZE_UNKNOWN) {
srclen = strlenn(source, buflen - 1);
} else if (srclen >= buflen) {
srclen = buflen - 1;
}
#if _DEBUG
// Double check that characters are not UTF-8
for (size_t pos = 0; pos < srclen; ++pos)
ASSERT(static_cast<unsigned char>(source[pos]) < 128);
#endif // _DEBUG
std::copy(source, source + srclen, buffer);
buffer[srclen] = 0;
return srclen;
}
veryLong veryLong::operator^(veryLong n1)
{
veryLong n;
if (!binary)
{
turn(&number);
turn(&n1.number);
n.znak=znak;
n.number = stepen(&number,&n1.number,&n.znak);
n.lenght = strlenn(&n.number);
n.binary=binary;
turn(&number);
turn(&n1.number);
turn(&n.number);
}
else
{
n.number = stepenb(&number,&n1.number,lenght,n1.lenght,&n.lenght);
n.binary=binary;
}
return n;
}
veryLong veryLong::operator%(veryLong n1)
{
veryLong n;
unsigned char *ostatok;
int lenOst;
if (!binary)
{
divv(&number,&n1.number,&n.number);
n.lenght = strlenn(&n.number);
n.binary=binary;
}
else
{
turnb(&number,lenght);
turnb(&n1.number,n1.lenght);
divvb(&number,&n1.number,lenght,n1.lenght,&lenOst,&n.number,&n.lenght);
n.binary=binary;
turnb(&number,lenght);
turnb(&n1.number,n1.lenght);
turnb(&n.number,n.lenght);
}
return n;
}
void start_kernel(struct params_t *params, int choice)
{
/* we use var[] instead of *var because sizeof(var) using */
#ifdef USE_HOST_DEBUG
const char kexec_path[] = "/bin/echo";
#else
const char kexec_path[] = KEXEC_PATH;
#endif
const char mount_point[] = MOUNTPOINT;
const char str_cmdline_start[] = "--command-line=root=";
const char str_rootfstype[] = " rootfstype=";
const char str_rootwait[] = " rootwait";
const char str_ubirootdev[] = "ubi0";
const char str_ubimtd[] = " ubi.mtd="; /* max ' ubi.mtd=15' len 11 +1 = 12 */
#ifdef UBI_VID_HDR_OFFSET
const char str_ubimtd_off[] = UBI_VID_HDR_OFFSET;
#else
const char str_ubimtd_off[] = "";
#endif
char mount_dev[16];
char mount_fstype[16];
char str_mtd_id[3];
/* Tags passed from host kernel cmdline to kexec'ed kernel */
const char str_mtdparts[] = " mtdparts=";
const char str_fbcon[] = " fbcon=";
const char str_initrd_start[] = "--initrd=";
/* empty environment */
char *const envp[] = { NULL };
const char *load_argv[] = { NULL, "-l", NULL, NULL, NULL, NULL };
const char *exec_argv[] = { NULL, "-e", NULL, NULL};
char *cmdline_arg = NULL, *initrd_arg = NULL;
int n, idx, u;
struct stat sinfo;
struct boot_item_t *item;
item = params->bootcfg->list[choice];
exec_argv[0] = kexec_path;
load_argv[0] = kexec_path;
/* --command-line arg generation */
idx = 2; /* load_argv current option index */
/* fill '--command-line' option */
if (item->device) {
/* default device to mount */
strcpy(mount_dev, item->device);
/* allocate space */
n = sizeof(str_cmdline_start) + strlen(item->device) +
sizeof(str_ubirootdev) + 2 +
sizeof(str_ubimtd) + 2 + sizeof(str_ubimtd_off) + 1 +
sizeof(str_rootwait) +
sizeof(str_rootfstype) + strlen(item->fstype) + 2 +
sizeof(str_mtdparts) + strlenn(params->cfg->mtdparts) +
sizeof(str_fbcon) + strlenn(params->cfg->fbcon) +
sizeof(char) + strlenn(item->cmdline);
cmdline_arg = (char *)malloc(n);
if (NULL == cmdline_arg) {
perror("Can't allocate memory for cmdline_arg");
} else {
strcpy(cmdline_arg, str_cmdline_start); /* --command-line=root= */
if (item->fstype) {
/* default fstype to mount */
strcpy(mount_fstype, item->fstype);
/* extra tags when we detect UBI */
if (!strncmp(item->fstype,"ubi",3)) {
/* mtd id [0-15] - one or two digits */
if(isdigit(atoi(item->device+strlen(item->device)-2))) {
strcpy(str_mtd_id, item->device+strlen(item->device)-2);
strcat(str_mtd_id, item->device+strlen(item->device)-1);
} else {
strcpy(str_mtd_id, item->device+strlen(item->device)-1);
}
/* get corresponding ubi dev to mount */
u = find_attached_ubi_device(str_mtd_id);
sprintf(mount_dev, "/dev/ubi%d", u);
/* FIXME: first volume is hardcoded */
strcat(mount_dev, "_0");
/* HARDCODED: we assume it's ubifs */
strcpy(mount_fstype,"ubifs");
/* extra cmdline tags when we detect ubi */
strcat(cmdline_arg, str_ubirootdev);
/* FIXME: first volume is hardcoded */
strcat(cmdline_arg, "_0");
strcat(cmdline_arg, str_ubimtd);
strcat(cmdline_arg, str_mtd_id);
#ifdef UBI_VID_HDR_OFFSET
strcat(cmdline_arg, ",");
strcat(cmdline_arg, str_ubimtd_off);
#endif
} else {
strcat(cmdline_arg, item->device); /* root=item->device */
}
strcat(cmdline_arg, str_rootfstype);
strcat(cmdline_arg, mount_fstype);
}
strcat(cmdline_arg, str_rootwait);
if (params->cfg->mtdparts) {
strcat(cmdline_arg, str_mtdparts);
strcat(cmdline_arg, params->cfg->mtdparts);
}
if (params->cfg->fbcon) {
strcat(cmdline_arg, str_fbcon);
strcat(cmdline_arg, params->cfg->fbcon);
}
if (item->cmdline) {
strcat(cmdline_arg, " ");
strcat(cmdline_arg, item->cmdline);
}
load_argv[idx] = cmdline_arg;
++idx;
}
}
/* fill '--initrd' option */
if (item->initrd) {
/* allocate space */
n = sizeof(str_initrd_start) + strlen(item->initrd);
initrd_arg = (char *)malloc(n);
if (NULL == initrd_arg) {
perror("Can't allocate memory for initrd_arg");
} else {
strcpy(initrd_arg, str_initrd_start); /* --initrd= */
strcat(initrd_arg, item->initrd);
load_argv[idx] = initrd_arg;
++idx;
}
}
/* Append kernelpath as last arg of kexec */
load_argv[idx] = item->kernelpath;
DPRINTF("load_argv: %s, %s, %s, %s, %s", load_argv[0],
load_argv[1], load_argv[2],
load_argv[3], load_argv[4]);
/* Mount boot device */
if ( -1 == mount(mount_dev, mount_point, mount_fstype,
MS_RDONLY, NULL) ) {
perror("Can't mount boot device");
exit(-1);
}
/* Load kernel */
n = fexecw(kexec_path, (char *const *)load_argv, envp);
if (-1 == n) {
perror("Kexec can't load kernel");
exit(-1);
}
umount(mount_point);
dispose(cmdline_arg);
dispose(initrd_arg);
/* Check /proc/sys/net presence */
if ( -1 == stat("/proc/sys/net", &sinfo) ) {
if (ENOENT == errno) {
/* We have no network, don't issue ifdown() while kexec'ing */
exec_argv[2] = "-x";
DPRINTF("No network is detected, disabling ifdown()");
} else {
perror("Can't stat /proc/sys/net");
}
}
DPRINTF("exec_argv: %s, %s, %s", exec_argv[0],
exec_argv[1], exec_argv[2]);
/* Boot new kernel */
execve(kexec_path, (char *const *)exec_argv, envp);
}
/**
* gnet_vunpack
* @format: unpack data format
* @buffer: buffer to unpack from
* @length: length of @buffer
* @args: var args
*
* Var arg interface to gnet_unpack(). See gnet_unpack() for more
* information.
*
* Returns: number of bytes packed; -1 on error.
*
**/
gint
gnet_vunpack (const gchar * format, const gchar * buffer, gint length,
va_list args)
{
gint n = 0;
gchar* p = (gchar*) format;
guint mult = 0;
gint sizemode = 0; /* 1 = little, 2 = big */
g_return_val_if_fail (format, -1);
g_return_val_if_fail (buffer, -1);
switch (*p)
{
case '@': ++p; break;
case '<': sizemode = 1; ++p; break;
case '>':
case '!': sizemode = 2; ++p; break;
}
for (; *p; ++p)
{
switch (*p)
{
case 'x':
{
mult = mult? mult:1;
g_return_val_if_fail (n + mult <= length, FALSE);
buffer += mult;
n += mult;
mult = 0;
break;
}
case 'b': { UNPACK(gint8); break; }
case 'B': { UNPACK(guint8); break; }
case 'h': { UNPACK2(short, gint16); break; }
case 'H': { UNPACK2(unsigned short, guint16); break; }
case 'i': { UNPACK2(int, gint32); break; }
case 'I': { UNPACK2(unsigned int, guint32); break; }
case 'l': { UNPACK2(long, gint32); break; }
case 'L': { UNPACK2(unsigned long, guint32); break; }
case 'f': { UNPACK(float); break; }
case 'd': { UNPACK(double); break; }
case 'v': { UNPACK2(void*, void*); break; }
case 's':
{
for (mult=(mult?mult:1); mult; --mult)
{
gchar** sp;
gsize slen;
sp = va_arg (args, gchar**);
g_return_val_if_fail (sp, -1);
slen = strlenn(buffer, length - n);
g_return_val_if_fail (n + slen <= length, FALSE);
*sp = g_new(gchar, slen + 1);
memcpy (*sp, buffer, slen);
(*sp)[slen] = 0;
buffer += slen + 1;
n += slen + 1;
}
mult = 0;
break;
}
case 'S':
{
gchar** sp;
gsize slen;
g_return_val_if_fail (mult, -1);
sp = va_arg (args, gchar**);
g_return_val_if_fail (sp, -1);
slen = MIN(mult, strlenn(buffer, length - n));
g_return_val_if_fail ((n + slen) <= length, -1);
*sp = g_new(gchar, mult + 1);
memcpy (*sp, buffer, slen);
while (slen < (mult + 1)) (*sp)[slen++] = '\0';
buffer += mult;
n += mult;
mult = 0; break;
}
case 'r': /* r is the same as s, in this case. */
{
for (mult=(mult?mult:1); mult; --mult)
{
gchar** sp;
guint ln;
sp = va_arg (args, gchar**);
ln = va_arg (args, guint);
g_return_val_if_fail (sp, -1);
g_return_val_if_fail (n + ln <= length, FALSE);
*sp = g_new(char, ln);
memcpy(*sp, buffer, ln);
buffer += ln;
n += ln;
}
mult = 0; break;
}
case 'R':
{
gchar** sp;
sp = va_arg (args, gchar**);
g_return_val_if_fail (sp, -1);
g_return_val_if_fail (mult, -1);
g_return_val_if_fail (n + mult <= length, -1);
*sp = g_new(char, mult);
memcpy(*sp, buffer, mult);
buffer += mult;
n += mult;
mult = 0;
break;
}
case 'p':
{
for (mult=(mult?mult:1); mult; --mult)
{
gchar** sp;
guint slen;
sp = va_arg (args, gchar**);
g_return_val_if_fail (sp, -1);
g_return_val_if_fail (n + 1 <= length, FALSE);
slen = *buffer++;
++n;
g_return_val_if_fail (n + slen <= length, FALSE);
*sp = g_new(gchar, slen + 1);
memcpy (*sp, buffer, slen);
(*sp)[slen] = 0;
buffer += slen;
n += slen;
}
mult = 0;
break;
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
{
mult *= 10;
mult += (*p - '0');
break;
}
case ' ': case '\t': case '\n': break;
default: g_return_val_if_fail (FALSE, -1);
}
}
return n;
}
/**
* Lookup for a vnode (file/dir) in FatFs.
* First lookup form vfs_hash and if not found then read it from ff which will
* probably read it via devfs interface. After the vnode has been created it
* will be added to the vfs hashmap. In ff terminology all files and directories
* that are in hashmap are also open on a file/dir handle, thus we'll have to
* make sure we don't have too many vnodes in cache that have no references, to
* avoid hitting any ff hard limits.
*/
static int fatfs_lookup(vnode_t * dir, const char * name, vnode_t ** result)
{
struct fatfs_inode * indir = get_inode_of_vnode(dir);
struct fatfs_sb * sb = get_ffsb_of_sb(dir->sb);
char * in_fpath;
long vn_hash;
struct vnode * vn = NULL;
int err, retval = 0;
KASSERT(dir != NULL, "dir must be set");
/* Format full path */
in_fpath = format_fpath(indir, name);
if (!in_fpath)
return -ENOMEM;
/*
* Emulate . and ..
*/
if (name[0] == '.' && name[1] != '.') {
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG, "Lookup emulating \".\"\n");
#endif
(void)vref(dir);
*result = dir;
kfree(in_fpath);
return 0;
} else if (name[0] == '.' && name[1] == '.' && name[2] != '.') {
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG, "Lookup emulating \"..\"\n");
#endif
if (VN_IS_FSROOT(dir)) {
*result = dir->sb->mountpoint;
kfree(in_fpath);
return -EDOM;
} else {
size_t i = strlenn(in_fpath, NAME_MAX) - 4;
while (in_fpath[i] != '/') {
i--;
}
in_fpath[i] = '\0';
}
}
/*
* Lookup from vfs_hash
*/
vn_hash = hash32_str(in_fpath, 0);
err = vfs_hash_get(
dir->sb, /* FS superblock */
vn_hash, /* Hash */
&vn, /* Retval */
fatfs_vncmp, /* Comparator */
in_fpath /* Compared fpath */
);
if (err) {
retval = -EIO;
goto fail;
}
if (vn) { /* found it in vfs_hash */
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG, "vn found in vfs_hash (%p)\n", vn);
#endif
*result = vn;
retval = 0;
} else { /* not cached */
struct fatfs_inode * in;
#ifdef configFATFS_DEBUG
KERROR(KERROR_DEBUG, "vn not in vfs_hash\n");
#endif
/*
* Create a inode and fetch data from the device.
* This also vrefs.
*/
err = create_inode(&in, sb, in_fpath, vn_hash, O_RDWR);
if (err) {
retval = err;
goto fail;
}
in_fpath = NULL; /* shall not be freed. */
*result = &in->in_vnode;
retval = 0;
}
fail:
kfree(in_fpath);
return retval;
}