scripts/dtc/libfdt/fdt_strerror.c

Source file repositories/reference/linux-study-clean/scripts/dtc/libfdt/fdt_strerror.c

File Facts

System
Linux kernel
Corpus path
scripts/dtc/libfdt/fdt_strerror.c
Extension
.c
Size
1485 bytes
Lines
61
Domain
Support Tooling And Documentation
Bucket
scripts
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct fdt_errtabent {
	const char *str;
};

#define FDT_ERRTABENT(val) \
	[(val)] = { .str = #val, }

static struct fdt_errtabent fdt_errtable[] = {
	FDT_ERRTABENT(FDT_ERR_NOTFOUND),
	FDT_ERRTABENT(FDT_ERR_EXISTS),
	FDT_ERRTABENT(FDT_ERR_NOSPACE),

	FDT_ERRTABENT(FDT_ERR_BADOFFSET),
	FDT_ERRTABENT(FDT_ERR_BADPATH),
	FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
	FDT_ERRTABENT(FDT_ERR_BADSTATE),

	FDT_ERRTABENT(FDT_ERR_TRUNCATED),
	FDT_ERRTABENT(FDT_ERR_BADMAGIC),
	FDT_ERRTABENT(FDT_ERR_BADVERSION),
	FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
	FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
	FDT_ERRTABENT(FDT_ERR_INTERNAL),
	FDT_ERRTABENT(FDT_ERR_BADNCELLS),
	FDT_ERRTABENT(FDT_ERR_BADVALUE),
	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
	FDT_ERRTABENT(FDT_ERR_BADFLAGS),
	FDT_ERRTABENT(FDT_ERR_ALIGNMENT),
};
#define FDT_ERRTABSIZE	((int)(sizeof(fdt_errtable) / sizeof(fdt_errtable[0])))

const char *fdt_strerror(int errval)
{
	if (errval > 0)
		return "<valid offset/length>";
	else if (errval == 0)
		return "<no error>";
	else if (-errval < FDT_ERRTABSIZE) {
		const char *s = fdt_errtable[-errval].str;

		if (s)
			return s;
	}

	return "<unknown error>";
}

Annotation

Implementation Notes