Changeset b7fd2a0 in mainline for kernel/generic/include/ddi/ddi.h

Timestamp:

2018-01-13T03:10:29Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

a53ed3a

Parents:

36f0738

Message:

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

Although this is a massive commit, it is a simple text replacement, and thus
is very easy to verify. Simply do the following:

`
git checkout <this commit's hash>
git reset HEAD
<sup>git add .
tools/srepl '\berrno_t\b' int
git add .
tools/srepl '\bsys_errno_t\b' sysarg_t
git reset
git diff
`</sup>

While this doesn't ensure that the replacements are correct, it does ensure
that the commit doesn't do anything except those replacements. Since errno_t
is typedef'd to int in the usual case (and sys_errno_t to sysarg_t), even if
incorrect, this commit cannot change behavior.

File:

• kernel/generic/include/ddi/ddi.h (modified) (1 diff)

kernel/generic/include/ddi/ddi.h

@@ -55 +55 @@
 extern void ddi_parea_register(parea_t *);
 
-extern sysarg_t sys_physmem_map(uintptr_t, size_t, unsigned int, void *,
+extern sys_errno_t sys_physmem_map(uintptr_t, size_t, unsigned int, void *,
     uintptr_t);
-extern sysarg_t sys_physmem_unmap(uintptr_t);
+extern sys_errno_t sys_physmem_unmap(uintptr_t);
 
-extern sysarg_t sys_dmamem_map(size_t, unsigned int, unsigned int, void *,
+extern sys_errno_t sys_dmamem_map(size_t, unsigned int, unsigned int, void *,
     void *, uintptr_t);
-extern sysarg_t sys_dmamem_unmap(uintptr_t, size_t, unsigned int);
+extern sys_errno_t sys_dmamem_unmap(uintptr_t, size_t, unsigned int);
 
-extern sysarg_t sys_iospace_enable(ddi_ioarg_t *);
-extern sysarg_t sys_iospace_disable(ddi_ioarg_t *);
+extern sys_errno_t sys_iospace_enable(ddi_ioarg_t *);
+extern sys_errno_t sys_iospace_disable(ddi_ioarg_t *);
 
 /*
  * Interface to be implemented by all architectures.
  */
-extern int ddi_iospace_enable_arch(task_t *, uintptr_t, size_t);
-extern int ddi_iospace_disable_arch(task_t *, uintptr_t, size_t);
+extern errno_t ddi_iospace_enable_arch(task_t *, uintptr_t, size_t);
+extern errno_t ddi_iospace_disable_arch(task_t *, uintptr_t, size_t);
 
 #endif