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提交 e79b1659 创建 作者: rsc's avatar rsc
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上级 13491bf3
显示空白字符变更
内嵌 并排
正在显示 包含 7 行增加 和 17 行删除
sysfile.c
浏览文件 @ e79b1659
...@@ -213,7 +213,7 @@ sys_unlink(void) ...@@ -213,7 +213,7 @@ sys_unlink(void)
} }
static struct inode* static struct inode*
mkpath(char *path, int canexist, short type, short major, short minor) create(char *path, int canexist, short type, short major, short minor)
{ {
uint off; uint off;
struct inode *ip, *dp; struct inode *ip, *dp;
...@@ -240,8 +240,6 @@ mkpath(char *path, int canexist, short type, short major, short minor) ...@@ -240,8 +240,6 @@ mkpath(char *path, int canexist, short type, short major, short minor)
ilock(ip); ilock(ip);
ip->major = major; ip->major = major;
ip->minor = minor; ip->minor = minor;
ip->size = 0;
ip->nlink = 1;
iupdate(ip); iupdate(ip);
if(dirlink(dp, name, ip->inum) < 0){ if(dirlink(dp, name, ip->inum) < 0){
...@@ -256,7 +254,7 @@ mkpath(char *path, int canexist, short type, short major, short minor) ...@@ -256,7 +254,7 @@ mkpath(char *path, int canexist, short type, short major, short minor)
iupdate(dp); iupdate(dp);
// No ip->nlink++ for ".": avoid cyclic ref count. // No ip->nlink++ for ".": avoid cyclic ref count.
if(dirlink(ip, ".", ip->inum) < 0 || dirlink(ip, "..", dp->inum) < 0) if(dirlink(ip, ".", ip->inum) < 0 || dirlink(ip, "..", dp->inum) < 0)
panic("mkpath dots"); panic("create dots");
} }
iunlockput(dp); iunlockput(dp);
return ip; return ip;
...@@ -274,7 +272,7 @@ sys_open(void) ...@@ -274,7 +272,7 @@ sys_open(void)
return -1; return -1;
if(omode & O_CREATE){ if(omode & O_CREATE){
if((ip = mkpath(path, 1, T_FILE, 0, 0)) == 0) if((ip = create(path, 1, T_FILE, 0, 0)) == 0)
return -1; return -1;
}else{ }else{
if((ip = namei(path)) == 0) if((ip = namei(path)) == 0)
...@@ -297,16 +295,8 @@ sys_open(void) ...@@ -297,16 +295,8 @@ sys_open(void)
f->type = FD_INODE; f->type = FD_INODE;
f->ip = ip; f->ip = ip;
f->off = 0; f->off = 0;
if(omode & O_RDWR) { f->readable = !(omode & O_WRONLY);
f->readable = 1; f->writable = (omode & O_WRONLY) || (omode & O_RDWR);
f->writable = 1;
} else if(omode & O_WRONLY) {
f->readable = 0;
f->writable = 1;
} else {
f->readable = 1;
f->writable = 0;
}
return fd; return fd;
} }
...@@ -322,7 +312,7 @@ sys_mknod(void) ...@@ -322,7 +312,7 @@ sys_mknod(void)
if((len=argstr(0, &path)) < 0 || if((len=argstr(0, &path)) < 0 ||
argint(1, &major) < 0 || argint(1, &major) < 0 ||
argint(2, &minor) < 0 || argint(2, &minor) < 0 ||
(ip = mkpath(path, 0, T_DEV, major, minor)) == 0) (ip = create(path, 0, T_DEV, major, minor)) == 0)
return -1; return -1;
iunlockput(ip); iunlockput(ip);
return 0; return 0;
...@@ -334,7 +324,7 @@ sys_mkdir(void) ...@@ -334,7 +324,7 @@ sys_mkdir(void)
char *path; char *path;
struct inode *ip; struct inode *ip;
if(argstr(0, &path) < 0 || (ip = mkpath(path, 0, T_DIR, 0, 0)) == 0) if(argstr(0, &path) < 0 || (ip = create(path, 0, T_DIR, 0, 0)) == 0)
return -1; return -1;
iunlockput(ip); iunlockput(ip);
return 0; return 0;
......
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