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Network card hardware sddress "C" function

kaplan060197
kaplan060197 asked
on
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Last Modified: 2013-12-23
Where I can find a "C" function that will return the
hardware address of the network card on Solaris 2.5.1
that run on X86?
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Author

Commented:
Adjusted points to 100
dhm

Commented:
There's no single function that can do this (afaik); in Solaris these days you have to send STREAMS messages to get the info.  I'm sure you've noticed that, if you run ifconfig(1M) as root, it prints out the ethernet hardware address.  Running truss(1) to trace the system calls ifconfig(1M) runs gives the output below; what it means is that you'll have to open the driver pseudo-device and do STREAMS I/O to get the hardware address.  The STREAMS message you'll need to send is DL_PHYS_ADDR_REQ; see the DLPI(7P) man page and the page for your particular network card.

Here's the relevant portion of my truss output.  "/dev/smc" is the name of the pseudo-device (I have an SMC ethernet card in my machine).

open("/dev/smc", O_RDWR)                        = 4
brk(0x080CBD78)                                 = 0
putmsg(4, 0x08047A10, 0x00000000, 0)            = 0
sigaction(SIGALRM, 0x080478B8, 0x080479B0)      = 0
sigprocmask(SIG_UNBLOCK, 0x080479E0, 0x080479D0) = 0
alarm(60)                                       = 0
getmsg(4, 0x08047A10, 0x00000000, 0x08047A0C)   = 0
alarm(0)                                        = 60
sigaction(SIGALRM, 0x080478B8, 0x080479B0)      = 0
sigprocmask(SIG_UNBLOCK, 0x080479E0, 0x080479D0) = 0
putmsg(4, 0x08047A90, 0x00000000, 0)            = 0
sigaction(SIGALRM, 0x08047938, 0x08047A30)      = 0
sigprocmask(SIG_UNBLOCK, 0x08047A60, 0x08047A50) = 0
alarm(60)                                       = 0
getmsg(4, 0x08047A90, 0x00000000, 0x08047A8C)   = 0
alarm(0)                                        = 60
sigaction(SIGALRM, 0x08047938, 0x08047A30)      = 0
sigprocmask(SIG_UNBLOCK, 0x08047A60, 0x08047A50) = 0
close(4)                                        = 0
write(1, "\t e t h e r   0 : 0 : c".., 24)      = 24

(Most of that is signal-handling stuff so that alarms can be set around functions that might hang.  The essentials are:

open("/dev/smc", O_RDWR)                        = 4
putmsg(4, 0x08047A10, 0x00000000, 0)            = 0
getmsg(4, 0x08047A10, 0x00000000, 0x08047A0C)   = 0
putmsg(4, 0x08047A90, 0x00000000, 0)            = 0
getmsg(4, 0x08047A90, 0x00000000, 0x08047A8C)   = 0
close(4)                                        = 0
write(1, "\t e t h e r   0 : 0 : c".., 24)      = 24

The last "write" statement prints out the hardware address detected by the getmsg/putmsg sequence.)

Author

Commented:
I ask to FIND exsisting user function already written and
TESTED, not adivces how to write one by try and error.
dhm

Commented:
You're welcome.

Author

Commented:
Adjusted points to 150

Author

Commented:
Adjusted points to 210
just awk it out from 'prtconf' or arp -a

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