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increase buffer size for kernel reads

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This commit is contained in:
gdt 2004-01-06 00:36:51 +00:00
parent 2934f28ef1
commit dbee01fe8b
2 changed files with 16 additions and 1 deletions
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7
zebra/ChangeLog
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@ -1,3 +1,10 @@
2004-01-05 Greg Troxel <gdt@fnord.ir.bbn.com>
* kernel_socket.c (kernel_read): Add a sockaddr_dl to the ifmsg
structure, because on Solaris sockaddr_dl is far larger than the
base sockaddr structure. (The code had previously been failing to
read all the data.)
2004-01-05 Greg Troxel <gdt@ahi.ir.bbn.com> 2004-01-05 Greg Troxel <gdt@ahi.ir.bbn.com>
* kernel_socket.c (kernel_read): Look up interfaces by index * kernel_socket.c (kernel_read): Look up interfaces by index

10
zebra/kernel_socket.c
View File

@ -872,6 +872,13 @@ kernel_read (struct thread *thread)
int nbytes; int nbytes;
struct rt_msghdr *rtm; struct rt_msghdr *rtm;
/*
* This must be big enough for any message the kernel might send.
* The code previously used RTAX_MAX struct sockaddrs in all cases,
* but now that sockaddrs are variable size, this doesn't work
* (Solaris has 244 bytes of sdl_data!). For now, add a struct
* sockaddr_dl to the case where it is used.
*/
union union
{ {
/* Routing information. */ /* Routing information. */
@ -885,7 +892,8 @@ kernel_read (struct thread *thread)
struct struct
{ {
struct if_msghdr ifm; struct if_msghdr ifm;
struct sockaddr addr[RTAX_MAX]; struct sockaddr_dl;
struct sockaddr addr[RTAX_MAX-1];
} im; } im;
/* Interface address information. */ /* Interface address information. */