1 #include <host-ipmid/ipmid-api.h>
2 #include <stdio.h>
3 #include <string.h>
4 #include <unistd.h>
5 #include "writefrudata.hpp"
6 
7 void register_netfn_storage_write_fru() __attribute__((constructor));
8 
9 sd_bus* ipmid_get_sd_bus_connection(void);
10 
11 ///-------------------------------------------------------
12 // Called by IPMI netfn router for write fru data command
13 //--------------------------------------------------------
14 ipmi_ret_t ipmi_storage_write_fru_data(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
15                               ipmi_request_t request, ipmi_response_t response,
16                               ipmi_data_len_t data_len, ipmi_context_t context)
17 {
18     FILE *fp = NULL;
19     char fru_file_name[16] = {0};
20     uint8_t offset = 0;
21     uint16_t len = 0;
22     ipmi_ret_t rc = IPMI_CC_INVALID;
23     const char *mode = NULL;
24 
25     // From the payload, extract the header that has fruid and the offsets
26     write_fru_data_t *reqptr = (write_fru_data_t*)request;
27 
28     // Maintaining a temporary file to pump the data
29     sprintf(fru_file_name, "%s%02x", "/tmp/ipmifru", reqptr->frunum);
30 
31     offset = ((uint16_t)reqptr->offsetms) << 8 | reqptr->offsetls;
32 
33     // Length is the number of request bytes minus the header itself.
34     // The header contains an extra byte to indicate the start of
35     // the data (so didn't need to worry about word/byte boundaries)
36     // hence the -1...
37     len = ((uint16_t)*data_len) - (sizeof(write_fru_data_t)-1);
38 
39     // On error there is no response data for this command.
40     *data_len = 0;
41 
42 #ifdef __IPMI__DEBUG__
43     printf("IPMI WRITE-FRU-DATA for [%s]  Offset = [%d] Length = [%d]\n",
44             fru_file_name, offset, len);
45 #endif
46 
47 
48     if( access( fru_file_name, F_OK ) == -1 ) {
49         mode = "wb";
50     } else {
51         mode = "rb+";
52     }
53 
54     if ((fp = fopen(fru_file_name, mode)) != NULL)
55     {
56         if(fseek(fp, offset, SEEK_SET))
57         {
58             perror("Error:");
59             fclose(fp);
60             return rc;
61         }
62 
63         if(fwrite(&reqptr->data, len, 1, fp) != 1)
64         {
65             perror("Error:");
66             fclose(fp);
67             return rc;
68         }
69 
70         fclose(fp);
71     }
72     else
73     {
74         fprintf(stderr, "Error trying to write to fru file %s\n",fru_file_name);
75         return rc;
76     }
77 
78 
79     // If we got here then set the resonse byte
80     // to the number of bytes written
81     memcpy(response, &len, 1);
82     *data_len = 1;
83     rc = IPMI_CC_OK;
84 
85     // Get the reference to global sd_bus object
86     sd_bus *bus_type = ipmid_get_sd_bus_connection();
87 
88     // We received some bytes. It may be full or partial. Send a valid
89     // FRU file to the inventory controller on DBus for the correct number
90     bool bmc_fru = false;
91     ipmi_validate_fru_area(reqptr->frunum, fru_file_name, bus_type, bmc_fru);
92 
93     return rc;
94 }
95 
96 //-------------------------------------------------------
97 // Registering WRITE FRU DATA command handler with daemon
98 //-------------------------------------------------------
99 void register_netfn_storage_write_fru()
100 {
101     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_STORAGE, IPMI_CMD_WRITE_FRU_DATA);
102     ipmi_register_callback(NETFUN_STORAGE, IPMI_CMD_WRITE_FRU_DATA, NULL, ipmi_storage_write_fru_data,
103                            SYSTEM_INTERFACE);
104 }
105