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Build the SMB2 maperror KUnit tests as `smb2maperror_test.ko`. Link: https://lore.kernel.org/linux-cifs/20260210081040.4156383-1-geert@linux-m68k.org/ Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com>
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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*
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* Functions which do error mapping of SMB2 status codes to POSIX errors
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*
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* Copyright (C) International Business Machines Corp., 2009
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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*/
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#include <linux/errno.h>
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "smb2proto.h"
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#include "smb2glob.h"
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#include "../common/smb2status.h"
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#include "trace.h"
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static const struct status_to_posix_error smb2_error_map_table[] = {
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/*
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* Automatically generated by the `gen_smb2_mapping` script,
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* sorted by NT status code (cpu-endian, ascending)
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*/
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#include "smb2_mapping_table.c"
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};
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static __always_inline int cmp_smb2_status(const void *_key, const void *_pivot)
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{
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__u32 key = *(__u32 *)_key;
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const struct status_to_posix_error *pivot = _pivot;
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if (key < pivot->smb2_status)
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return -1;
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if (key > pivot->smb2_status)
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return 1;
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return 0;
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}
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static const struct status_to_posix_error *smb2_get_err_map(__u32 smb2_status)
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{
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const struct status_to_posix_error *err_map;
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err_map = __inline_bsearch(&smb2_status, smb2_error_map_table,
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ARRAY_SIZE(smb2_error_map_table),
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sizeof(struct status_to_posix_error),
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cmp_smb2_status);
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return err_map;
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}
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int
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map_smb2_to_linux_error(char *buf, bool log_err)
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{
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struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
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int rc = -EIO;
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__le32 smb2err = shdr->Status;
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const struct status_to_posix_error *err_map;
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if (smb2err == 0) {
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trace_smb3_cmd_done(le32_to_cpu(shdr->Id.SyncId.TreeId),
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le64_to_cpu(shdr->SessionId),
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le16_to_cpu(shdr->Command),
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le64_to_cpu(shdr->MessageId));
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return 0;
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}
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log_err = (log_err && (smb2err != STATUS_MORE_PROCESSING_REQUIRED) &&
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(smb2err != STATUS_END_OF_FILE)) ||
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(cifsFYI & CIFS_RC);
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err_map = smb2_get_err_map(le32_to_cpu(smb2err));
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if (!err_map)
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goto out;
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rc = err_map->posix_error;
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if (log_err)
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pr_notice("Status code returned 0x%08x %s\n",
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err_map->smb2_status, err_map->status_string);
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out:
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/* on error mapping not found - return EIO */
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cifs_dbg(FYI, "Mapping SMB2 status code 0x%08x to POSIX err %d\n",
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le32_to_cpu(smb2err), rc);
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trace_smb3_cmd_err(le32_to_cpu(shdr->Id.SyncId.TreeId),
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le64_to_cpu(shdr->SessionId),
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le16_to_cpu(shdr->Command),
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le64_to_cpu(shdr->MessageId),
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le32_to_cpu(smb2err), rc);
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if (rc == -EIO)
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smb_EIO1(smb_eio_trace_smb2_received_error, le32_to_cpu(smb2err));
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return rc;
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}
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int __init smb2_init_maperror(void)
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{
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unsigned int i;
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/* Check whether the array is sorted in ascending order */
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for (i = 1; i < ARRAY_SIZE(smb2_error_map_table); i++) {
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if (smb2_error_map_table[i].smb2_status >=
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smb2_error_map_table[i - 1].smb2_status)
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continue;
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pr_err("smb2_error_map_table array order is incorrect\n");
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return -EINVAL;
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}
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return 0;
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}
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#if IS_ENABLED(CONFIG_SMB_KUNIT_TESTS)
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/* Previous prototype for eliminating the build warning. */
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const struct status_to_posix_error *smb2_get_err_map_test(__u32 smb2_status);
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const struct status_to_posix_error *smb2_get_err_map_test(__u32 smb2_status)
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{
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return smb2_get_err_map(smb2_status);
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}
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EXPORT_SYMBOL_GPL(smb2_get_err_map_test);
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const struct status_to_posix_error *smb2_error_map_table_test = smb2_error_map_table;
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EXPORT_SYMBOL_GPL(smb2_error_map_table_test);
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unsigned int smb2_error_map_num = ARRAY_SIZE(smb2_error_map_table);
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EXPORT_SYMBOL_GPL(smb2_error_map_num);
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#endif
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