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我想问一下在linux下C程序要调用C函数时，如果被调用C函数名中间有下划线，是不是在调用时可以省略下划线之前的函数名。比如下面这个 函数我在调用它时能不能写成write(tty),
void con_write(struct tty_struct * tty)
{
int nr;
char c;
int currcons;
currcons = tty - tty_table;
if ((currcons>=MAX_CONSOLES) || (currcons<0))
panic("con_write: illegal tty";
nr = CHARS(tty->write_q);
while (nr--) {
if (tty->stopped)
break;
GETCH(tty->write_q,c);
if (c == 24 || c == 26)
state = ESnormal;
switch(state) {
case ESnormal:
if (c>31 && c<127) {
if (x>=video_num_columns) {
x -= video_num_columns;
pos -= video_size_row;
lf(currcons);
}
__asm__("movb %2,%%ah\n\t"
"movw %%ax,%1\n\t"
::"a" (translate[c-32]),
"m" (*(short *)pos),
"m" (attr)
:"ax";
pos += 2;
x++;
} else if (c==27)
state=ESesc;
else if (c==10 || c==11 || c==12)
lf(currcons);
else if (c==13)
cr(currcons);
else if (c==ERASE_CHAR(tty))
del(currcons);
else if (c== {
if (x) {
x--;
pos -= 2;
}
} else if (c==9) {
c=8-(x&7);
x += c;
pos += c<<1;
if (x>video_num_columns) {
x -= video_num_columns;
pos -= video_size_row;
lf(currcons);
}
c=9;
} else if (c==7)
sysbeep();
else if (c == 14)
translate = GRAF_TRANS;
else if (c == 15)
translate = NORM_TRANS;
break;
case ESesc:
state = ESnormal;
switch (c)
{
case '[':
state=ESsquare;
break;
case 'E':
gotoxy(currcons,0,y+1);
break;
case 'M':
ri(currcons);
break;
case 'D':
lf(currcons);
break;
case 'Z':
respond(currcons,tty);
break;
case '7':
save_cur(currcons);
break;
case '8':
restore_cur(currcons);
break;
case '(': case ')':
state = ESsetgraph;
break;
case 'P':
state = ESsetterm;
break;
case '#':
state = -1;
break;
case 'c':
tty->termios = DEF_TERMIOS;
state = restate = ESnormal;
checkin = 0;
top = 0;
bottom = video_num_lines;
break;
/* case '>': Numeric keypad */
/* case '=': Appl. keypad */
}
break;
case ESsquare:
for(npar=0;npar<NPAR;npar++)
par[npar]=0;
npar=0;
state=ESgetpars;
if (c =='[') /* Function key */
{ state=ESfunckey;
break;
}
if (ques=(c=='?'))
break;
case ESgetpars:
if (c==';' && npar<NPAR-1) {
npar++;
break;
} else if (c>='0' && c<='9') {
par[npar]=10*par[npar]+c-'0';
break;
} else state=ESgotpars;
case ESgotpars:
state = ESnormal;
if (ques)
{ ques =0;
break;
}
switch(c) {
case 'G': case '`':
if (par[0]) par[0]--;
gotoxy(currcons,par[0],y);
break;
case 'A':
if (!par[0]) par[0]++;
gotoxy(currcons,x,y-par[0]);
break;
case 'B': case 'e':
if (!par[0]) par[0]++;
gotoxy(currcons,x,y+par[0]);
break;
case 'C': case 'a':
if (!par[0]) par[0]++;
gotoxy(currcons,x+par[0],y);
break;
case 'D':
if (!par[0]) par[0]++;
gotoxy(currcons,x-par[0],y);
break;
case 'E':
if (!par[0]) par[0]++;
gotoxy(currcons,0,y+par[0]);
break;
case 'F':
if (!par[0]) par[0]++;
gotoxy(currcons,0,y-par[0]);
break;
case 'd':
if (par[0]) par[0]--;
gotoxy(currcons,x,par[0]);
break;
case 'H': case 'f':
if (par[0]) par[0]--;
if (par[1]) par[1]--;
gotoxy(currcons,par[1],par[0]);
break;
case 'J':
csi_J(currcons,par[0]);
break;
case 'K':
csi_K(currcons,par[0]);
break;
case 'L':
csi_L(currcons,par[0]);
break;
case 'M':
csi_M(currcons,par[0]);
break;
case 'P':
csi_P(currcons,par[0]);
break;
case '@':
csi_at(currcons,par[0]);
break;
case 'm':
csi_m(currcons);
break;
case 'r':
if (par[0]) par[0]--;
if (!par[1]) par[1] = video_num_lines;
if (par[0] < par[1] &&
par[1] <= video_num_lines) {
top=par[0];
bottom=par[1];
}
break;
case 's':
save_cur(currcons);
break;
case 'u':
restore_cur(currcons);
break;
case 'l': /* blank interval */
case 'b': /* bold attribute */
if (!((npar >= 2) &&
((par[1]-13) == par[0]) &&
((par[2]-17) == par[0])))
break;
if ((c=='l')&&(par[0]>=0)&&(par[0]<=60))
{
blankinterval = HZ*60*par[0];
blankcount = blankinterval;
}
if (c=='b')
vc_cons[currcons].vc_bold_attr
= par[0];
}
break;
case ESfunckey:
state = ESnormal;
break;
case ESsetterm: /* Setterm functions. */
state = ESnormal;
if (c == 'S') {
def_attr = attr;
video_erase_char = (video_erase_char&0x0ff) | (def_attr<<;
} else if (c == 'L')
; /*linewrap on*/
else if (c == 'l')
; /*linewrap off*/
break;
case ESsetgraph:
state = ESnormal;
if (c == '0')
translate = GRAF_TRANS;
else if (c == 'B')
translate = NORM_TRANS;
break;
default:
state = ESnormal;
}
}
set_cursor(currcons);
}void con_write(struct tty_struct * tty)
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发表于 2012-08-20 22:50
