lib/errname.c

Source file repositories/reference/linux-study-clean/lib/errname.c

File Facts

System
Linux kernel
Corpus path
lib/errname.c
Extension
.c
Size
3908 bytes
Lines
226
Domain
Kernel Services
Bucket
lib
Inferred role
Kernel Services: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
#include <linux/build_bug.h>
#include <linux/errno.h>
#include <linux/errname.h>
#include <linux/kernel.h>
#include <linux/math.h>

/*
 * Ensure these tables do not accidentally become gigantic if some
 * huge errno makes it in. On most architectures, the first table will
 * only have about 140 entries, but mips and parisc have more sparsely
 * allocated errnos (with EHWPOISON = 257 on parisc, and EDQUOT = 1133
 * on mips), so this wastes a bit of space on those - though we
 * special case the EDQUOT case.
 */
#define E(err) [err + BUILD_BUG_ON_ZERO(err <= 0 || err > 300)] = "-" #err
static const char *names_0[] = {
	E(E2BIG),
	E(EACCES),
	E(EADDRINUSE),
	E(EADDRNOTAVAIL),
	E(EADV),
	E(EAFNOSUPPORT),
	E(EAGAIN), /* EWOULDBLOCK */
	E(EALREADY),
	E(EBADE),
	E(EBADF),
	E(EBADFD),
	E(EBADMSG),
	E(EBADR),
	E(EBADRQC),
	E(EBADSLT),
	E(EBFONT),
	E(EBUSY),
	E(ECANCELED), /* ECANCELLED */
	E(ECHILD),
	E(ECHRNG),
	E(ECOMM),
	E(ECONNABORTED),
	E(ECONNREFUSED), /* EREFUSED */
	E(ECONNRESET),
	E(EDEADLK), /* EDEADLOCK */
#if EDEADLK != EDEADLOCK /* mips, sparc, powerpc */
	E(EDEADLOCK),
#endif
	E(EDESTADDRREQ),
	E(EDOM),
	E(EDOTDOT),
#ifndef CONFIG_MIPS
	E(EDQUOT),
#endif
	E(EEXIST),
	E(EFAULT),
	E(EFBIG),
	E(EHOSTDOWN),
	E(EHOSTUNREACH),
	E(EHWPOISON),
	E(EIDRM),
	E(EILSEQ),
#ifdef EINIT
	E(EINIT),
#endif
	E(EINPROGRESS),
	E(EINTR),
	E(EINVAL),
	E(EIO),
	E(EISCONN),
	E(EISDIR),
	E(EISNAM),
	E(EKEYEXPIRED),
	E(EKEYREJECTED),
	E(EKEYREVOKED),
	E(EL2HLT),
	E(EL2NSYNC),
	E(EL3HLT),
	E(EL3RST),
	E(ELIBACC),
	E(ELIBBAD),
	E(ELIBEXEC),
	E(ELIBMAX),
	E(ELIBSCN),
	E(ELNRNG),
	E(ELOOP),
	E(EMEDIUMTYPE),
	E(EMFILE),
	E(EMLINK),
	E(EMSGSIZE),
	E(EMULTIHOP),
	E(ENAMETOOLONG),
	E(ENAVAIL),

Annotation

Implementation Notes