Revision 050a4f341f35bf51db321c7f68700f9e0b1a7552 authored by Jens Axboe on 04 January 2023, 21:44:02 UTC, committed by Jens Axboe on 04 January 2023, 21:44:02 UTC
This reverts commit 85d6ce58e493ac8b7122e2fbe3f41b94d6ebdc11. We're reinstating the pktcdvd driver, which needs this API. Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent ee4b4e2
errname.c
// 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(EALREADY),
E(EBADE),
E(EBADF),
E(EBADFD),
E(EBADMSG),
E(EBADR),
E(EBADRQC),
E(EBADSLT),
E(EBFONT),
E(EBUSY),
#ifdef ECANCELLED
E(ECANCELLED),
#endif
E(ECHILD),
E(ECHRNG),
E(ECOMM),
E(ECONNABORTED),
E(ECONNRESET),
E(EDEADLOCK),
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),
E(ENETDOWN),
E(ENETRESET),
E(ENETUNREACH),
E(ENFILE),
E(ENOANO),
E(ENOBUFS),
E(ENOCSI),
E(ENODATA),
E(ENODEV),
E(ENOENT),
E(ENOEXEC),
E(ENOKEY),
E(ENOLCK),
E(ENOLINK),
E(ENOMEDIUM),
E(ENOMEM),
E(ENOMSG),
E(ENONET),
E(ENOPKG),
E(ENOPROTOOPT),
E(ENOSPC),
E(ENOSR),
E(ENOSTR),
#ifdef ENOSYM
E(ENOSYM),
#endif
E(ENOSYS),
E(ENOTBLK),
E(ENOTCONN),
E(ENOTDIR),
E(ENOTEMPTY),
E(ENOTNAM),
E(ENOTRECOVERABLE),
E(ENOTSOCK),
E(ENOTTY),
E(ENOTUNIQ),
E(ENXIO),
E(EOPNOTSUPP),
E(EOVERFLOW),
E(EOWNERDEAD),
E(EPERM),
E(EPFNOSUPPORT),
E(EPIPE),
#ifdef EPROCLIM
E(EPROCLIM),
#endif
E(EPROTO),
E(EPROTONOSUPPORT),
E(EPROTOTYPE),
E(ERANGE),
E(EREMCHG),
#ifdef EREMDEV
E(EREMDEV),
#endif
E(EREMOTE),
E(EREMOTEIO),
#ifdef EREMOTERELEASE
E(EREMOTERELEASE),
#endif
E(ERESTART),
E(ERFKILL),
E(EROFS),
#ifdef ERREMOTE
E(ERREMOTE),
#endif
E(ESHUTDOWN),
E(ESOCKTNOSUPPORT),
E(ESPIPE),
E(ESRCH),
E(ESRMNT),
E(ESTALE),
E(ESTRPIPE),
E(ETIME),
E(ETIMEDOUT),
E(ETOOMANYREFS),
E(ETXTBSY),
E(EUCLEAN),
E(EUNATCH),
E(EUSERS),
E(EXDEV),
E(EXFULL),
E(ECANCELED), /* ECANCELLED */
E(EAGAIN), /* EWOULDBLOCK */
E(ECONNREFUSED), /* EREFUSED */
E(EDEADLK), /* EDEADLOCK */
};
#undef E
#define E(err) [err - 512 + BUILD_BUG_ON_ZERO(err < 512 || err > 550)] = "-" #err
static const char *names_512[] = {
E(ERESTARTSYS),
E(ERESTARTNOINTR),
E(ERESTARTNOHAND),
E(ENOIOCTLCMD),
E(ERESTART_RESTARTBLOCK),
E(EPROBE_DEFER),
E(EOPENSTALE),
E(ENOPARAM),
E(EBADHANDLE),
E(ENOTSYNC),
E(EBADCOOKIE),
E(ENOTSUPP),
E(ETOOSMALL),
E(ESERVERFAULT),
E(EBADTYPE),
E(EJUKEBOX),
E(EIOCBQUEUED),
E(ERECALLCONFLICT),
};
#undef E
static const char *__errname(unsigned err)
{
if (err < ARRAY_SIZE(names_0))
return names_0[err];
if (err >= 512 && err - 512 < ARRAY_SIZE(names_512))
return names_512[err - 512];
/* But why? */
if (IS_ENABLED(CONFIG_MIPS) && err == EDQUOT) /* 1133 */
return "-EDQUOT";
return NULL;
}
/*
* errname(EIO) -> "EIO"
* errname(-EIO) -> "-EIO"
*/
const char *errname(int err)
{
const char *name = __errname(abs(err));
if (!name)
return NULL;
return err > 0 ? name + 1 : name;
}
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