ilo-pona/xv6-65oo2
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Activity

add alignment check of virtual address to exec()

Browse source
This commit is contained in:
MikeCAT 2015-12-19 23:43:56 +09:00 committed by Frans Kaashoek
parent a7c03bd914
commit 67a7f9597e
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
exec.c
View file

@ -46,6 +46,8 @@ exec(char *path, char **argv)
goto bad;
if((sz = allocuvm(pgdir, sz, ph.vaddr + ph.memsz)) == 0)
goto bad;
if(ph.vaddr % PGSIZE != 0)
goto bad;
if(loaduvm(pgdir, (char*)ph.vaddr, ip, ph.off, ph.filesz) < 0)
goto bad;
}