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authorJeff Layton <jlayton@redhat.com>2012-10-10 15:25:28 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-12 20:14:55 -0400
commit91a27b2a756784714e924e5e854b919273082d26 (patch)
tree3913246b7d6e62703ec915f481e3a7159393f0f0 /arch/blackfin/kernel
parent8e377d15078a501c4da98471f56396343c407d92 (diff)
vfs: define struct filename and have getname() return it
getname() is intended to copy pathname strings from userspace into a kernel buffer. The result is just a string in kernel space. It would however be quite helpful to be able to attach some ancillary info to the string. For instance, we could attach some audit-related info to reduce the amount of audit-related processing needed. When auditing is enabled, we could also call getname() on the string more than once and not need to recopy it from userspace. This patchset converts the getname()/putname() interfaces to return a struct instead of a string. For now, the struct just tracks the string in kernel space and the original userland pointer for it. Later, we'll add other information to the struct as it becomes convenient. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/process.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 62bcea7dcc6d..bb1cc721fcf7 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -213,14 +213,14 @@ asmlinkage int sys_execve(const char __user *name,
213 const char __user *const __user *envp) 213 const char __user *const __user *envp)
214{ 214{
215 int error; 215 int error;
216 char *filename; 216 struct filename *filename;
217 struct pt_regs *regs = (struct pt_regs *)((&name) + 6); 217 struct pt_regs *regs = (struct pt_regs *)((&name) + 6);
218 218
219 filename = getname(name); 219 filename = getname(name);
220 error = PTR_ERR(filename); 220 error = PTR_ERR(filename);
221 if (IS_ERR(filename)) 221 if (IS_ERR(filename))
222 return error; 222 return error;
223 error = do_execve(filename, argv, envp, regs); 223 error = do_execve(filename->name, argv, envp, regs);
224 putname(filename); 224 putname(filename);
225 return error; 225 return error;
226} 226}