pollsys system call, solaris, C language;

Dear Readers,
please help me if you know what the pollsys system call does;
I am trying to understand every detail  of what the following command produces:

                       truss -v all -w all -r 3 -f -a -e  ping 192.168.1.10 2>&1 | cat -n    

excerpt of output:
the only point I am missing is ``pollsys''
   ...   ...   ...

   270  645:    so_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP, "", SOV_XPG4_2) = 3
   ...   ...   ...
    276  645:            AF_INET  to = 192.168.1.10  port = 0
   277  645:    sigaction(SIGALRM, 0x08047D30, 0x08047DB0)      = 0
   278  645:        new: hand = 0xFEE461A8 mask = 0xFFBFFEFF 0x0000FFFF 0 0 flags = 0x0000
   ... ... ...
   280  645:    schedctl()                                      = 0xFED8D000
   281  645:    lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
   282  645:    alarm(1)                                        = 0
 ***  283  645:    pollsys(0x08047C70, 1, 0x00000000, 0x00000000)  = 1   ***
   284  645:            fd=3  ev=POLLRDNORM rev=POLLRDNORM
   285  645:    recvmsg(3, 0x08047DA4, 32768)                   = 84
   ...   ...   ...
   294  192.168.1.10 is alive
   295  645:    write(1, 0xFEE800EC, 22)                        = 22
   296  645:       1 9 2 . 1 6 8 . 1 . 1 0   i s   a l i v e\n
   297  645:    alarm(0)                                        = 0
   298  645:    _exit(0)

   If you could give me a link to something resembling a manual page would be great ! Be assured that I did my best to
   search for it before asking for your help;
   I think 500 points could be fair for such an obscure item (at least to me) in Unix kernel
  Thanks
 
andrew_314Asked:
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NukfrorCommented:
According to this presentation:

http://www.filibeto.org/~aduritz/truetrue/solaris10/DTrace_in_a_Day.pdf

poll was used in Solaris 9 and below.  pollsys is the "poll" call of Solaris 10.
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andrew_314Author Commented:

Thanks, the link is also very interesting !
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