Imbus/xv6-riscv-kernel
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support read() and write() bigger than one page

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This commit is contained in:
Robert Morris 2019-06-04 05:57:47 -04:00
parent cefe223bf5
commit 8baac76050
12 changed files with 95 additions and 62 deletions
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4
sysfile.c
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@ -173,7 +173,7 @@ isdirempty(struct inode *dp)
struct dirent de;
for(off=2*sizeof(de); off<dp->size; off+=sizeof(de)){
if(readi(dp, (char*)&de, off, sizeof(de)) != sizeof(de))
if(readi(dp, 0, (uint64)&de, off, sizeof(de)) != sizeof(de))
panic("isdirempty: readi");
if(de.inum != 0)
return 0;
@ -217,7 +217,7 @@ sys_unlink(void)
}
memset(&de, 0, sizeof(de));
if(writei(dp, (char*)&de, off, sizeof(de)) != sizeof(de))
if(writei(dp, 0, (uint64)&de, off, sizeof(de)) != sizeof(de))
panic("unlink: writei");
if(ip->type == T_DIR){
dp->nlink--;