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银宸时代
OS Lab Group
奖励实验
xv6-public
提交
e4d6a211
提交
e4d6a211
8月 28, 2007
创建
作者:
rsc
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
more consistent spacing
上级
c1b100e9
隐藏空白字符变更
内嵌
并排
正在显示
17 个修改的文件
包含
59 行增加
和
59 行删除
+59
-59
cat.c
cat.c
+1
-1
console.c
console.c
+3
-3
fs.c
fs.c
+18
-18
kbd.c
kbd.c
+4
-4
mkdir.c
mkdir.c
+1
-1
mp.c
mp.c
+1
-1
pipe.c
pipe.c
+1
-1
printf.c
printf.c
+10
-10
proc.c
proc.c
+3
-3
rm.c
rm.c
+1
-1
sh.c
sh.c
+1
-1
string.c
string.c
+3
-3
syscall.c
syscall.c
+1
-1
sysfile.c
sysfile.c
+1
-1
trap.c
trap.c
+1
-1
umalloc.c
umalloc.c
+8
-8
wc.c
wc.c
+1
-1
没有找到文件。
cat.c
浏览文件 @
e4d6a211
...
...
@@ -22,7 +22,7 @@ main(int argc, char *argv[])
{
int
fd
,
i
;
if
(
argc
<=
1
)
{
if
(
argc
<=
1
){
cat
(
0
);
exit
();
}
...
...
console.c
浏览文件 @
e4d6a211
...
...
@@ -91,13 +91,13 @@ printint(int xx, int base, int sgn)
if
(
sgn
&&
xx
<
0
){
neg
=
1
;
x
=
0
-
xx
;
}
else
{
}
else
{
x
=
xx
;
}
do
{
do
{
buf
[
i
++
]
=
digits
[
x
%
base
];
}
while
((
x
/=
base
)
!=
0
);
}
while
((
x
/=
base
)
!=
0
);
if
(
neg
)
buf
[
i
++
]
=
'-'
;
...
...
fs.c
浏览文件 @
e4d6a211
...
...
@@ -237,7 +237,7 @@ void
iput
(
struct
inode
*
ip
)
{
acquire
(
&
icache
.
lock
);
if
(
ip
->
ref
==
1
&&
(
ip
->
flags
&
I_VALID
)
&&
ip
->
nlink
==
0
)
{
if
(
ip
->
ref
==
1
&&
(
ip
->
flags
&
I_VALID
)
&&
ip
->
nlink
==
0
){
// inode is no longer used: truncate and free inode.
if
(
ip
->
flags
&
I_BUSY
)
panic
(
"iput busy"
);
...
...
@@ -273,10 +273,10 @@ ialloc(uint dev, short type)
struct
superblock
sb
;
readsb
(
dev
,
&
sb
);
for
(
inum
=
1
;
inum
<
sb
.
ninodes
;
inum
++
)
{
// loop over inode blocks
for
(
inum
=
1
;
inum
<
sb
.
ninodes
;
inum
++
){
// loop over inode blocks
bp
=
bread
(
dev
,
IBLOCK
(
inum
));
dip
=
(
struct
dinode
*
)
bp
->
data
+
inum
%
IPB
;
if
(
dip
->
type
==
0
)
{
// a free inode
if
(
dip
->
type
==
0
){
// a free inode
memset
(
dip
,
0
,
sizeof
(
*
dip
));
dip
->
type
=
type
;
bwrite
(
bp
);
// mark it allocated on the disk
...
...
@@ -323,8 +323,8 @@ bmap(struct inode *ip, uint bn, int alloc)
uint
addr
,
*
a
;
struct
buf
*
bp
;
if
(
bn
<
NDIRECT
)
{
if
((
addr
=
ip
->
addrs
[
bn
])
==
0
)
{
if
(
bn
<
NDIRECT
){
if
((
addr
=
ip
->
addrs
[
bn
])
==
0
){
if
(
!
alloc
)
return
-
1
;
ip
->
addrs
[
bn
]
=
addr
=
balloc
(
ip
->
dev
);
...
...
@@ -333,9 +333,9 @@ bmap(struct inode *ip, uint bn, int alloc)
}
bn
-=
NDIRECT
;
if
(
bn
<
NINDIRECT
)
{
if
(
bn
<
NINDIRECT
){
// Load indirect block, allocating if necessary.
if
((
addr
=
ip
->
addrs
[
INDIRECT
])
==
0
)
{
if
((
addr
=
ip
->
addrs
[
INDIRECT
])
==
0
){
if
(
!
alloc
)
return
-
1
;
ip
->
addrs
[
INDIRECT
]
=
addr
=
balloc
(
ip
->
dev
);
...
...
@@ -343,8 +343,8 @@ bmap(struct inode *ip, uint bn, int alloc)
bp
=
bread
(
ip
->
dev
,
addr
);
a
=
(
uint
*
)
bp
->
data
;
if
((
addr
=
a
[
bn
])
==
0
)
{
if
(
!
alloc
)
{
if
((
addr
=
a
[
bn
])
==
0
){
if
(
!
alloc
){
brelse
(
bp
);
return
-
1
;
}
...
...
@@ -367,17 +367,17 @@ itrunc(struct inode *ip)
struct
buf
*
bp
;
uint
*
a
;
for
(
i
=
0
;
i
<
NDIRECT
;
i
++
)
{
if
(
ip
->
addrs
[
i
])
{
for
(
i
=
0
;
i
<
NDIRECT
;
i
++
){
if
(
ip
->
addrs
[
i
]){
bfree
(
ip
->
dev
,
ip
->
addrs
[
i
]);
ip
->
addrs
[
i
]
=
0
;
}
}
if
(
ip
->
addrs
[
INDIRECT
])
{
if
(
ip
->
addrs
[
INDIRECT
]){
bp
=
bread
(
ip
->
dev
,
ip
->
addrs
[
INDIRECT
]);
a
=
(
uint
*
)
bp
->
data
;
for
(
j
=
0
;
j
<
NINDIRECT
;
j
++
)
{
for
(
j
=
0
;
j
<
NINDIRECT
;
j
++
){
if
(
a
[
j
])
bfree
(
ip
->
dev
,
a
[
j
]);
}
...
...
@@ -408,7 +408,7 @@ readi(struct inode *ip, char *dst, uint off, uint n)
uint
tot
,
m
;
struct
buf
*
bp
;
if
(
ip
->
type
==
T_DEV
)
{
if
(
ip
->
type
==
T_DEV
){
if
(
ip
->
major
<
0
||
ip
->
major
>=
NDEV
||
!
devsw
[
ip
->
major
].
read
)
return
-
1
;
return
devsw
[
ip
->
major
].
read
(
ip
,
dst
,
n
);
...
...
@@ -419,7 +419,7 @@ readi(struct inode *ip, char *dst, uint off, uint n)
if
(
off
+
n
>
ip
->
size
)
n
=
ip
->
size
-
off
;
for
(
tot
=
0
;
tot
<
n
;
tot
+=
m
,
off
+=
m
,
dst
+=
m
)
{
for
(
tot
=
0
;
tot
<
n
;
tot
+=
m
,
off
+=
m
,
dst
+=
m
){
bp
=
bread
(
ip
->
dev
,
bmap
(
ip
,
off
/
BSIZE
,
0
));
m
=
min
(
n
-
tot
,
BSIZE
-
off
%
BSIZE
);
memmove
(
dst
,
bp
->
data
+
off
%
BSIZE
,
m
);
...
...
@@ -436,7 +436,7 @@ writei(struct inode *ip, char *src, uint off, uint n)
uint
tot
,
m
;
struct
buf
*
bp
;
if
(
ip
->
type
==
T_DEV
)
{
if
(
ip
->
type
==
T_DEV
){
if
(
ip
->
major
<
0
||
ip
->
major
>=
NDEV
||
!
devsw
[
ip
->
major
].
write
)
return
-
1
;
return
devsw
[
ip
->
major
].
write
(
ip
,
src
,
n
);
...
...
@@ -447,7 +447,7 @@ writei(struct inode *ip, char *src, uint off, uint n)
if
(
off
+
n
>
MAXFILE
*
BSIZE
)
n
=
MAXFILE
*
BSIZE
-
off
;
for
(
tot
=
0
;
tot
<
n
;
tot
+=
m
,
off
+=
m
,
src
+=
m
)
{
for
(
tot
=
0
;
tot
<
n
;
tot
+=
m
,
off
+=
m
,
src
+=
m
){
bp
=
bread
(
ip
->
dev
,
bmap
(
ip
,
off
/
BSIZE
,
1
));
m
=
min
(
n
-
tot
,
BSIZE
-
off
%
BSIZE
);
memmove
(
bp
->
data
+
off
%
BSIZE
,
src
,
m
);
...
...
@@ -455,7 +455,7 @@ writei(struct inode *ip, char *src, uint off, uint n)
brelse
(
bp
);
}
if
(
n
>
0
&&
off
>
ip
->
size
)
{
if
(
n
>
0
&&
off
>
ip
->
size
){
ip
->
size
=
off
;
iupdate
(
ip
);
}
...
...
kbd.c
浏览文件 @
e4d6a211
...
...
@@ -17,15 +17,15 @@ kbd_getc(void)
return
-
1
;
data
=
inb
(
KBDATAP
);
if
(
data
==
0xE0
)
{
if
(
data
==
0xE0
){
shift
|=
E0ESC
;
return
0
;
}
else
if
(
data
&
0x80
)
{
}
else
if
(
data
&
0x80
)
{
// Key released
data
=
(
shift
&
E0ESC
?
data
:
data
&
0x7F
);
shift
&=
~
(
shiftcode
[
data
]
|
E0ESC
);
return
0
;
}
else
if
(
shift
&
E0ESC
)
{
}
else
if
(
shift
&
E0ESC
)
{
// Last character was an E0 escape; or with 0x80
data
|=
0x80
;
shift
&=
~
E0ESC
;
...
...
@@ -34,7 +34,7 @@ kbd_getc(void)
shift
|=
shiftcode
[
data
];
shift
^=
togglecode
[
data
];
c
=
charcode
[
shift
&
(
CTL
|
SHIFT
)][
data
];
if
(
shift
&
CAPSLOCK
)
{
if
(
shift
&
CAPSLOCK
){
if
(
'a'
<=
c
&&
c
<=
'z'
)
c
+=
'A'
-
'a'
;
else
if
(
'A'
<=
c
&&
c
<=
'Z'
)
...
...
mkdir.c
浏览文件 @
e4d6a211
...
...
@@ -13,7 +13,7 @@ main(int argc, char *argv[])
}
for
(
i
=
1
;
i
<
argc
;
i
++
){
if
(
mkdir
(
argv
[
i
])
<
0
)
{
if
(
mkdir
(
argv
[
i
])
<
0
){
printf
(
2
,
"mkdir: %s failed to create
\n
"
,
argv
[
i
]);
break
;
}
...
...
mp.c
浏览文件 @
e4d6a211
...
...
@@ -134,7 +134,7 @@ mp_init(void)
}
}
if
(
mp
->
imcrp
)
{
if
(
mp
->
imcrp
){
// Bochs doesn't support IMCR, so this doesn't run on Bochs.
// But it would on real hardware.
outb
(
0x22
,
0x70
);
// Select IMCR
...
...
pipe.c
浏览文件 @
e4d6a211
...
...
@@ -65,7 +65,7 @@ pipeclose(struct pipe *p, int writable)
if
(
writable
){
p
->
writeopen
=
0
;
wakeup
(
&
p
->
readp
);
}
else
{
}
else
{
p
->
readopen
=
0
;
wakeup
(
&
p
->
writep
);
}
...
...
printf.c
浏览文件 @
e4d6a211
...
...
@@ -20,14 +20,14 @@ printint(int fd, int xx, int base, int sgn)
if
(
sgn
&&
xx
<
0
){
neg
=
1
;
x
=
-
xx
;
}
else
{
}
else
{
x
=
xx
;
}
i
=
0
;
do
{
do
{
buf
[
i
++
]
=
digits
[
x
%
base
];
}
while
((
x
/=
base
)
!=
0
);
}
while
((
x
/=
base
)
!=
0
);
if
(
neg
)
buf
[
i
++
]
=
'-'
;
...
...
@@ -50,17 +50,17 @@ printf(int fd, char *fmt, ...)
if
(
state
==
0
){
if
(
c
==
'%'
){
state
=
'%'
;
}
else
{
}
else
{
putc
(
fd
,
c
);
}
}
else
if
(
state
==
'%'
){
}
else
if
(
state
==
'%'
){
if
(
c
==
'd'
){
printint
(
fd
,
*
ap
,
10
,
1
);
ap
++
;
}
else
if
(
c
==
'x'
||
c
==
'p'
){
}
else
if
(
c
==
'x'
||
c
==
'p'
){
printint
(
fd
,
*
ap
,
16
,
0
);
ap
++
;
}
else
if
(
c
==
's'
){
}
else
if
(
c
==
's'
){
s
=
(
char
*
)
*
ap
;
ap
++
;
if
(
s
==
0
)
...
...
@@ -69,12 +69,12 @@ printf(int fd, char *fmt, ...)
putc
(
fd
,
*
s
);
s
++
;
}
}
else
if
(
c
==
'c'
){
}
else
if
(
c
==
'c'
){
putc
(
fd
,
*
ap
);
ap
++
;
}
else
if
(
c
==
'%'
){
}
else
if
(
c
==
'%'
){
putc
(
fd
,
c
);
}
else
{
}
else
{
// Unknown % sequence. Print it to draw attention.
putc
(
fd
,
'%'
);
putc
(
fd
,
c
);
...
...
proc.c
浏览文件 @
e4d6a211
...
...
@@ -86,7 +86,7 @@ setupsegs(struct proc *p)
if
(
p
){
c
->
gdt
[
SEG_UCODE
]
=
SEG
(
STA_X
|
STA_R
,
(
uint
)
p
->
mem
,
p
->
sz
-
1
,
DPL_USER
);
c
->
gdt
[
SEG_UDATA
]
=
SEG
(
STA_W
,
(
uint
)
p
->
mem
,
p
->
sz
-
1
,
DPL_USER
);
}
else
{
}
else
{
c
->
gdt
[
SEG_UCODE
]
=
SEG_NULL
;
c
->
gdt
[
SEG_UDATA
]
=
SEG_NULL
;
}
...
...
@@ -444,7 +444,7 @@ procdump(void)
char
*
state
;
uint
pc
[
10
];
for
(
i
=
0
;
i
<
NPROC
;
i
++
)
{
for
(
i
=
0
;
i
<
NPROC
;
i
++
){
p
=
&
proc
[
i
];
if
(
p
->
state
==
UNUSED
)
continue
;
...
...
@@ -453,7 +453,7 @@ procdump(void)
else
state
=
"???"
;
cprintf
(
"%d %s %s"
,
p
->
pid
,
state
,
p
->
name
);
if
(
p
->
state
==
SLEEPING
)
{
if
(
p
->
state
==
SLEEPING
){
getcallerpcs
((
uint
*
)
p
->
context
.
ebp
+
2
,
pc
);
for
(
j
=
0
;
j
<
10
&&
pc
[
j
]
!=
0
;
j
++
)
cprintf
(
" %p"
,
pc
[
j
]);
...
...
rm.c
浏览文件 @
e4d6a211
...
...
@@ -13,7 +13,7 @@ main(int argc, char *argv[])
}
for
(
i
=
1
;
i
<
argc
;
i
++
){
if
(
unlink
(
argv
[
i
])
<
0
)
{
if
(
unlink
(
argv
[
i
])
<
0
){
printf
(
2
,
"rm: %s failed to delete
\n
"
,
argv
[
i
]);
break
;
}
...
...
sh.c
浏览文件 @
e4d6a211
...
...
@@ -156,7 +156,7 @@ main(void)
}
// Read and run input commands.
while
(
getcmd
(
buf
,
sizeof
(
buf
))
>=
0
)
{
while
(
getcmd
(
buf
,
sizeof
(
buf
))
>=
0
){
if
(
fork1
()
==
0
)
runcmd
(
parsecmd
(
buf
));
wait
();
...
...
string.c
浏览文件 @
e4d6a211
...
...
@@ -19,7 +19,7 @@ memcmp(const void *v1, const void *v2, uint n)
s1
=
v1
;
s2
=
v2
;
while
(
n
--
>
0
)
{
while
(
n
--
>
0
){
if
(
*
s1
!=
*
s2
)
return
*
s1
-
*
s2
;
s1
++
,
s2
++
;
...
...
@@ -36,12 +36,12 @@ memmove(void *dst, const void *src, uint n)
s
=
src
;
d
=
dst
;
if
(
s
<
d
&&
s
+
n
>
d
)
{
if
(
s
<
d
&&
s
+
n
>
d
){
s
+=
n
;
d
+=
n
;
while
(
n
--
>
0
)
*--
d
=
*--
s
;
}
else
}
else
while
(
n
--
>
0
)
*
d
++
=
*
s
++
;
...
...
syscall.c
浏览文件 @
e4d6a211
...
...
@@ -128,7 +128,7 @@ syscall(void)
num
=
cp
->
tf
->
eax
;
if
(
num
>=
0
&&
num
<
NELEM
(
syscalls
)
&&
syscalls
[
num
])
cp
->
tf
->
eax
=
syscalls
[
num
]();
else
{
else
{
cprintf
(
"%d %s: unknown sys call %d
\n
"
,
cp
->
pid
,
cp
->
name
,
num
);
cp
->
tf
->
eax
=
-
1
;
...
...
sysfile.c
浏览文件 @
e4d6a211
...
...
@@ -335,7 +335,7 @@ sys_chdir(void)
if
(
argstr
(
0
,
&
path
)
<
0
||
(
ip
=
namei
(
path
))
==
0
)
return
-
1
;
ilock
(
ip
);
if
(
ip
->
type
!=
T_DIR
)
{
if
(
ip
->
type
!=
T_DIR
){
iunlockput
(
ip
);
return
-
1
;
}
...
...
trap.c
浏览文件 @
e4d6a211
...
...
@@ -72,7 +72,7 @@ trap(struct trapframe *tf)
break
;
default:
if
(
cp
==
0
)
{
if
(
cp
==
0
){
// Otherwise it's our mistake.
cprintf
(
"unexpected trap %d from cpu %d eip %x
\n
"
,
tf
->
trapno
,
cpu
(),
tf
->
eip
);
...
...
umalloc.c
浏览文件 @
e4d6a211
...
...
@@ -30,15 +30,15 @@ free(void *ap)
for
(
p
=
freep
;
!
(
bp
>
p
&&
bp
<
p
->
s
.
ptr
);
p
=
p
->
s
.
ptr
)
if
(
p
>=
p
->
s
.
ptr
&&
(
bp
>
p
||
bp
<
p
->
s
.
ptr
))
break
;
if
(
bp
+
bp
->
s
.
size
==
p
->
s
.
ptr
)
{
if
(
bp
+
bp
->
s
.
size
==
p
->
s
.
ptr
){
bp
->
s
.
size
+=
p
->
s
.
ptr
->
s
.
size
;
bp
->
s
.
ptr
=
p
->
s
.
ptr
->
s
.
ptr
;
}
else
}
else
bp
->
s
.
ptr
=
p
->
s
.
ptr
;
if
(
p
+
p
->
s
.
size
==
bp
)
{
if
(
p
+
p
->
s
.
size
==
bp
){
p
->
s
.
size
+=
bp
->
s
.
size
;
p
->
s
.
ptr
=
bp
->
s
.
ptr
;
}
else
}
else
p
->
s
.
ptr
=
bp
;
freep
=
p
;
}
...
...
@@ -67,15 +67,15 @@ malloc(uint nbytes)
uint
nunits
;
nunits
=
(
nbytes
+
sizeof
(
Header
)
-
1
)
/
sizeof
(
Header
)
+
1
;
if
((
prevp
=
freep
)
==
0
)
{
if
((
prevp
=
freep
)
==
0
){
base
.
s
.
ptr
=
freep
=
prevp
=
&
base
;
base
.
s
.
size
=
0
;
}
for
(
p
=
prevp
->
s
.
ptr
;
;
prevp
=
p
,
p
=
p
->
s
.
ptr
)
{
if
(
p
->
s
.
size
>=
nunits
)
{
for
(
p
=
prevp
->
s
.
ptr
;
;
prevp
=
p
,
p
=
p
->
s
.
ptr
){
if
(
p
->
s
.
size
>=
nunits
){
if
(
p
->
s
.
size
==
nunits
)
prevp
->
s
.
ptr
=
p
->
s
.
ptr
;
else
{
else
{
p
->
s
.
size
-=
nunits
;
p
+=
p
->
s
.
size
;
p
->
s
.
size
=
nunits
;
...
...
wc.c
浏览文件 @
e4d6a211
...
...
@@ -37,7 +37,7 @@ main(int argc, char *argv[])
{
int
fd
,
i
;
if
(
argc
<=
1
)
{
if
(
argc
<=
1
){
wc
(
0
,
""
);
exit
();
}
...
...
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