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Lines 92-103
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| 92 |
*/ |
92 |
*/ |
| 93 |
struct rtattr *tb[CTRL_ATTR_MAX + 1]; |
93 |
struct rtattr *tb[CTRL_ATTR_MAX + 1]; |
| 94 |
/* pointer to the generic netlink header in the incoming message */ |
94 |
/* pointer to the generic netlink header in the incoming message */ |
| 95 |
struct genlmsghdr *ghdr = NLMSG_DATA(n); |
95 |
struct genlmsghdr ghdr; |
| 96 |
/* length of the attribute and payload */ |
96 |
/* length of the attribute and payload */ |
| 97 |
int len = n->nlmsg_len - NLMSG_LENGTH(GENL_HDRLEN); |
97 |
int len = n->nlmsg_len - NLMSG_LENGTH(GENL_HDRLEN); |
| 98 |
/* Pointer to the attribute portion of the message */ |
98 |
/* Pointer to the attribute portion of the message */ |
| 99 |
struct rtattr *attrs; |
99 |
struct rtattr *attrs; |
| 100 |
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101 |
memcpy(&ghdr, NLMSG_DATA(n), sizeof(ghdr)); |
| 101 |
if (len < 0) { |
102 |
if (len < 0) { |
| 102 |
fprintf(stderr, "%s: netlink CTRL_CMD_GETFAMILY response, " |
103 |
fprintf(stderr, "%s: netlink CTRL_CMD_GETFAMILY response, " |
| 103 |
"wrong controller message len: %d\n", progname, len); |
104 |
"wrong controller message len: %d\n", progname, len); |
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Lines 111-128
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| 111 |
return 0; |
112 |
return 0; |
| 112 |
} |
113 |
} |
| 113 |
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114 |
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| 114 |
if (ghdr->cmd != CTRL_CMD_GETFAMILY && |
115 |
if (ghdr.cmd != CTRL_CMD_GETFAMILY && |
| 115 |
ghdr->cmd != CTRL_CMD_DELFAMILY && |
116 |
ghdr.cmd != CTRL_CMD_DELFAMILY && |
| 116 |
ghdr->cmd != CTRL_CMD_NEWFAMILY && |
117 |
ghdr.cmd != CTRL_CMD_NEWFAMILY && |
| 117 |
ghdr->cmd != CTRL_CMD_NEWMCAST_GRP && |
118 |
ghdr.cmd != CTRL_CMD_NEWMCAST_GRP && |
| 118 |
ghdr->cmd != CTRL_CMD_DELMCAST_GRP) { |
119 |
ghdr.cmd != CTRL_CMD_DELMCAST_GRP) { |
| 119 |
fprintf(stderr, "%s: unknown netlink controller command %d\n", |
120 |
fprintf(stderr, "%s: unknown netlink controller command %d\n", |
| 120 |
progname, ghdr->cmd); |
121 |
progname, ghdr.cmd); |
| 121 |
return 0; |
122 |
return 0; |
| 122 |
} |
123 |
} |
| 123 |
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| 124 |
/* set attrs to point to the attribute */ |
125 |
/* set attrs to point to the attribute */ |
| 125 |
attrs = (struct rtattr *)((char *)ghdr + GENL_HDRLEN); |
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attrs = (struct rtattr *)((char *)NLMSG_DATA(n) + GENL_HDRLEN); |
| 126 |
/* Read the table from the message into "tb". This actually just */ |
127 |
/* Read the table from the message into "tb". This actually just */ |
| 127 |
/* places pointers into the message into tb[]. */ |
128 |
/* places pointers into the message into tb[]. */ |
| 128 |
parse_rtattr(tb, CTRL_ATTR_MAX, attrs, len); |
129 |
parse_rtattr(tb, CTRL_ATTR_MAX, attrs, len); |
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Lines 168-174
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| 168 |
/* pointer to the nlmsghdr in req */ |
169 |
/* pointer to the nlmsghdr in req */ |
| 169 |
struct nlmsghdr *nlh; |
170 |
struct nlmsghdr *nlh; |
| 170 |
/* pointer to the generic netlink header in req */ |
171 |
/* pointer to the generic netlink header in req */ |
| 171 |
struct genlmsghdr *ghdr; |
172 |
struct genlmsghdr ghdr; |
| 172 |
/* return value */ |
173 |
/* return value */ |
| 173 |
int ret = -1; |
174 |
int ret = -1; |
| 174 |
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175 |
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Lines 183-191
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| 183 |
nlh->nlmsg_type = GENL_ID_CTRL; |
184 |
nlh->nlmsg_type = GENL_ID_CTRL; |
| 184 |
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185 |
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| 185 |
/* set up ghdr to point to the generic netlink header */ |
186 |
/* set up ghdr to point to the generic netlink header */ |
| 186 |
ghdr = NLMSG_DATA(&req.n); |
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| 187 |
/* set the command we want to run: "GETFAMILY" */ |
187 |
/* set the command we want to run: "GETFAMILY" */ |
| 188 |
ghdr->cmd = CTRL_CMD_GETFAMILY; |
188 |
ghdr.cmd = CTRL_CMD_GETFAMILY; |
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189 |
memcpy(NLMSG_DATA(&req.n), &ghdr, sizeof(ghdr)); |
| 189 |
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190 |
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| 190 |
/* the message payload is the family name */ |
191 |
/* the message payload is the family name */ |
| 191 |
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME, |
192 |
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME, |
