Imbus/xv6-riscv-kernel
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log write() data

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usertest for big write()s
push begin_trans/commit_trans down into syscalls
This commit is contained in:
Robert Morris 2011-08-12 09:25:39 -04:00
parent bd71a45046
commit 2e59046362
7 changed files with 143 additions and 43 deletions
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30
sysfile.c
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@ -121,6 +121,9 @@ sys_link(void)
iunlockput(ip);
return -1;
}
begin_trans();
ip->nlink++;
iupdate(ip);
iunlock(ip);
@ -134,6 +137,9 @@ sys_link(void)
}
iunlockput(dp);
iput(ip);
commit_trans();
return 0;
bad:
@ -141,6 +147,7 @@ bad:
ip->nlink--;
iupdate(ip);
iunlockput(ip);
commit_trans();
return -1;
}
@ -195,6 +202,8 @@ sys_unlink(void)
return -1;
}
begin_trans();
memset(&de, 0, sizeof(de));
if(writei(dp, (char*)&de, off, sizeof(de)) != sizeof(de))
panic("unlink: writei");
@ -207,6 +216,9 @@ sys_unlink(void)
ip->nlink--;
iupdate(ip);
iunlockput(ip);
commit_trans();
return 0;
}
@ -251,6 +263,7 @@ create(char *path, short type, short major, short minor)
panic("create: dirlink");
iunlockput(dp);
return ip;
}
@ -265,7 +278,10 @@ sys_open(void)
if(argstr(0, &path) < 0 || argint(1, &omode) < 0)
return -1;
if(omode & O_CREATE){
if((ip = create(path, T_FILE, 0, 0)) == 0)
begin_trans();
ip = create(path, T_FILE, 0, 0);
commit_trans();
if(ip == 0)
return -1;
} else {
if((ip = namei(path)) == 0)
@ -299,9 +315,13 @@ sys_mkdir(void)
char *path;
struct inode *ip;
if(argstr(0, &path) < 0 || (ip = create(path, T_DIR, 0, 0)) == 0)
begin_trans();
if(argstr(0, &path) < 0 || (ip = create(path, T_DIR, 0, 0)) == 0){
commit_trans();
return -1;
}
iunlockput(ip);
commit_trans();
return 0;
}
@ -313,12 +333,16 @@ sys_mknod(void)
int len;
int major, minor;
begin_trans();
if((len=argstr(0, &path)) < 0 ||
argint(1, &major) < 0 ||
argint(2, &minor) < 0 ||
(ip = create(path, T_DEV, major, minor)) == 0)
(ip = create(path, T_DEV, major, minor)) == 0){
commit_trans();
return -1;
}
iunlockput(ip);
commit_trans();
return 0;
}