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scsi: qla4xxx: Replace all non-returning strlcpy() with strscpy()

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strlcpy() reads the entire source buffer first.  This read may exceed the
destination size limit.  This is both inefficient and can lead to linear
read overflows if a source string is not NUL-terminated [1].  In an effort
to remove strlcpy() completely [2], replace strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Link: https://lore.kernel.org/r/20230516025355.2835898-1-azeemshaikh38@gmail.com
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Azeem Shaikh 2023-05-16 02:53:55 +00:00 committed by Martin K. Petersen
parent 0871237a94
commit 41300cc989
2 changed files with 11 additions and 11 deletions
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8
drivers/scsi/qla4xxx/ql4_mbx.c
View File

@ -1611,8 +1611,8 @@ int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
goto exit_get_chap;
}
strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
strscpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
strscpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
chap_table->cookie = cpu_to_le16(CHAP_VALID_COOKIE);
exit_get_chap:
@ -1732,8 +1732,8 @@ int qla4xxx_get_uni_chap_at_index(struct scsi_qla_host *ha, char *username,
goto exit_unlock_uni_chap;
}
strlcpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
strlcpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
strscpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
strscpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
rval = QLA_SUCCESS;

14
drivers/scsi/qla4xxx/ql4_os.c
View File

@ -798,9 +798,9 @@ static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
continue;
chap_rec->chap_tbl_idx = i;
strlcpy(chap_rec->username, chap_table->name,
strscpy(chap_rec->username, chap_table->name,
ISCSI_CHAP_AUTH_NAME_MAX_LEN);
strlcpy(chap_rec->password, chap_table->secret,
strscpy(chap_rec->password, chap_table->secret,
QL4_CHAP_MAX_SECRET_LEN);
chap_rec->password_length = chap_table->secret_len;
@ -6052,8 +6052,8 @@ static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
if (!(chap_table->flags & BIT_6)) /* Not BIDI */
continue;
strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
strscpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
strscpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
ret = 0;
break;
}
@ -6281,8 +6281,8 @@ static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
tddb->tpgt = sess->tpgt;
tddb->port = conn->persistent_port;
strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
strscpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
strscpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
}
static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
@ -7781,7 +7781,7 @@ static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
goto exit_ddb_logout;
}
strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
strscpy(flash_tddb->iscsi_name, fnode_sess->targetname,
ISCSI_NAME_SIZE);
if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))