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author | 2005-04-16 15:20:36 -0700 | |
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committer | 2005-04-16 15:20:36 -0700 | |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/err.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/err.h')
-rw-r--r-- | include/linux/err.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/err.h b/include/linux/err.h new file mode 100644 index 000000000000..17c55df13615 --- /dev/null +++ b/include/linux/err.h @@ -0,0 +1,31 @@ +#ifndef _LINUX_ERR_H +#define _LINUX_ERR_H + +#include <linux/compiler.h> + +#include <asm/errno.h> + +/* + * Kernel pointers have redundant information, so we can use a + * scheme where we can return either an error code or a dentry + * pointer with the same return value. + * + * This should be a per-architecture thing, to allow different + * error and pointer decisions. + */ +static inline void *ERR_PTR(long error) +{ + return (void *) error; +} + +static inline long PTR_ERR(const void *ptr) +{ + return (long) ptr; +} + +static inline long IS_ERR(const void *ptr) +{ + return unlikely((unsigned long)ptr > (unsigned long)-1000L); +} + +#endif /* _LINUX_ERR_H */ |