diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fs.c | 3 | ||||
| -rw-r--r-- | kernel/sysfile.c | 9 |
2 files changed, 9 insertions, 3 deletions
diff --git a/kernel/fs.c b/kernel/fs.c index 247a86f..b220491 100644 --- a/kernel/fs.c +++ b/kernel/fs.c @@ -573,6 +573,7 @@ dirlookup(struct inode *dp, char *name, uint *poff) } // Write a new directory entry (name, inum) into the directory dp. +// Returns 0 on success, -1 on failure (e.g. out of disk blocks). int dirlink(struct inode *dp, char *name, uint inum) { @@ -597,7 +598,7 @@ dirlink(struct inode *dp, char *name, uint inum) strncpy(de.name, name, DIRSIZ); de.inum = inum; if(writei(dp, 0, (uint64)&de, off, sizeof(de)) != sizeof(de)) - panic("dirlink"); + return -1; return 0; } diff --git a/kernel/sysfile.c b/kernel/sysfile.c index 970a72a..4c0470e 100644 --- a/kernel/sysfile.c +++ b/kernel/sysfile.c @@ -279,8 +279,13 @@ create(char *path, short type, short major, short minor) panic("create dots"); } - if(dirlink(dp, name, ip->inum) < 0) - panic("create: dirlink"); + if(dirlink(dp, name, ip->inum) < 0){ + // oops. we don't need ip after all. + ip->nlink = 0; + iupdate(ip); + iunlockput(ip); + ip = 0; + } iunlockput(dp); |