Changeset 46577995 in mainline for kernel/generic/src/console/console.c

Timestamp:

2018-01-04T20:50:52Z (8 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

e211ea04

Parents:

facacc71

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:47:53)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-01-04 20:50:52)

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.

After this commit, HelenOS is free of code that mixes error codes with non-error
values on the assumption that error codes are negative.

File:

• kernel/generic/src/console/console.c (modified) (2 diffs)

kernel/generic/src/console/console.c

@@ -391 +391 @@
  *
  */
-sysarg_t sys_kio(int cmd, const void *buf, size_t size)
+sys_errno_t sys_kio(int cmd, const void *buf, size_t size)
 {
         char *data;
-        int rc;
+        errno_t rc;
 
         switch (cmd) {
@@ -408 +408 @@
 
         if (size > PAGE_SIZE)
-                return (sysarg_t) ELIMIT;
+                return (sys_errno_t) ELIMIT;
         
         if (size > 0) {
                 data = (char *) malloc(size + 1, 0);
                 if (!data)
-                        return (sysarg_t) ENOMEM;
+                        return (sys_errno_t) ENOMEM;
                 
                 rc = copy_from_uspace(data, buf, size);
                 if (rc) {
                         free(data);
-                        return (sysarg_t) rc;
+                        return (sys_errno_t) rc;
                 }
                 data[size] = 0;