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using d_path for solution to file path.

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This commit is contained in:
Tomoki Shirasawa
2015-08-28 13:01:34 +09:00
parent afeee5432f
commit 4176c59fd3
1 changed files with 10 additions and 4 deletions
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14
executer/kernel/binfmt_mcexec.c
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@ -80,6 +80,8 @@ static int load_elf(struct linux_binprm *bprm
char buf[32];
int l;
int pass;
char pbuf[1024];
const char *path;
if(bprm->envc == 0)
return -ENOEXEC;
@ -91,7 +93,11 @@ static int load_elf(struct linux_binprm *bprm
if(elf_ex->e_ident[EI_CLASS] != ELFCLASS64)
return -ENOEXEC;
cp = strrchr(bprm->interp, '/');
path = d_path(&bprm->file->f_path, pbuf, 1024);
if(!path || IS_ERR(path))
path = bprm->interp;
cp = strrchr(path, '/');
if(!cp ||
!strcmp(cp, "/mcexec") ||
!strcmp(cp, "/ihkosctl") ||
@ -196,11 +202,11 @@ static int load_elf(struct linux_binprm *bprm
if(rc);
else if(env_mcexec_wl)
rc = !pathcheck(bprm->interp, env_mcexec_wl);
rc = !pathcheck(path, env_mcexec_wl);
else if(env_mcexec_bl)
rc = pathcheck(bprm->interp, env_mcexec_bl);
rc = pathcheck(path, env_mcexec_bl);
else
rc = pathcheck(bprm->interp, "/usr:/bin:/sbin:/opt");
rc = pathcheck(path, "/usr:/bin:/sbin:/opt");
for(ep = env; ep->name; ep++)
if(ep->val)