sanchayanmaity/xv6-cs450
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rsc 2007-08-27 14:39:50 +00:00
parent 13491bf367
commit e79b16598c
1 changed files with 7 additions and 17 deletions
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24
sysfile.c
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@ -213,7 +213,7 @@ sys_unlink(void)
}
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;
struct inode *ip, *dp;
@ -240,8 +240,6 @@ mkpath(char *path, int canexist, short type, short major, short minor)
ilock(ip);
ip->major = major;
ip->minor = minor;
ip->size = 0;
ip->nlink = 1;
iupdate(ip);
if(dirlink(dp, name, ip->inum) < 0){
@ -256,7 +254,7 @@ mkpath(char *path, int canexist, short type, short major, short minor)
iupdate(dp);
// No ip->nlink++ for ".": avoid cyclic ref count.
if(dirlink(ip, ".", ip->inum) < 0 || dirlink(ip, "..", dp->inum) < 0)
panic("mkpath dots");
panic("create dots");
}
iunlockput(dp);
return ip;
@ -274,7 +272,7 @@ sys_open(void)
return -1;
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;
}else{
if((ip = namei(path)) == 0)
@ -297,16 +295,8 @@ sys_open(void)
f->type = FD_INODE;
f->ip = ip;
f->off = 0;
if(omode & O_RDWR) {
f->readable = 1;
f->writable = 1;
} else if(omode & O_WRONLY) {
f->readable = 0;
f->writable = 1;
} else {
f->readable = 1;
f->writable = 0;
}
f->readable = !(omode & O_WRONLY);
f->writable = (omode & O_WRONLY) || (omode & O_RDWR);
return fd;
}
@ -322,7 +312,7 @@ sys_mknod(void)
if((len=argstr(0, &path)) < 0 ||
argint(1, &major) < 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;
iunlockput(ip);
return 0;
@ -334,7 +324,7 @@ sys_mkdir(void)
char *path;
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;
iunlockput(ip);
return 0;