sysctl: Cannot allocate memory on FreeBSD 10

[dereckson]

Output on FreeBSD 10:

• a "sysctl: Cannot allocate memory" error message
• the correct logo
• an information line with RAM information missing

FreeBSD Version 10.0-RELEASE, Compiled FreeBSD 10.0-RELEASE #0 r260789: Thu Jan 16 22:34:59 UTC 2014   
Zero  Intel(R) Atom(TM) CPU  C2750  @ 2.40GHz Processors, 0M RAM, -1.00 Bogomips Total
                               ysul.nasqueron.org

[thevilledev]

I've opened two PR's:

• Memory-handling improvements on Improved memory-handling #10
• Fix broken sysctl() calls on FreeBSD (64-bit) on Fix broken sysctl() calls on FreeBSD (64-bit) #11

As you can see, both changes are merged to my own master branch.

@dereckson, can you try it out?

[dereckson]

Ǹew output with your fixes works and shows RAM information correctly.

$ hub fetch vtorhonen
$ git checkout vtorhonen-freebsd-libsysinfo
$ git rebase vtorhonen-memory-handling
$ gmake clean all
$ ./linux_logo 
             ,        ,
            /(        )`
            \ \___   / |
            /- _  `-/  '
           (/\/ \ \   /\
           / /   | `    \
           O O   ) /    |
           `-^--'`<     '
          (_.)  _  )   /
           `.___/`    /
             `-----' /
<----.     __ / __   \
<----|====O)))==) \) /====
<----'    `--' `.__,' \
             |        |
              \       /       /\
         ______( (_  / \______/
       ,'  ,-----'   |
       `--{__________)

FreeBSD Version 10.1-RELEASE-p26, Compiled FreeBSD 10.1-RELEASE-p26 #0: Wed Jan 13 20:59:29 UTC 2016     ro
Four  Intel(R) Atom(TM) CPU  C2750  @ 2.40GHz Processors, 3.6GB RAM, -1.00 Bogomips Total
                               ysul.nasqueron.org

[tdi]

Unfortunately, there is a problem with contact with @deater, @vtorhonen I will however include your patched in the Debian package.

[thevilledev]

Thanks @tdi.

[dereckson]

I've a new one for FreeBSD, a segmentation fault for #R memory information:

(lldb) thread list
Process 37158 stopped
* thread #1: tid = 101506, 0x00000008004107dd libc.so.7`memcpy + 205, name = 'linux_logo', stop reason = signal SIGSEGV: invalid address (fault address: 0x7ffefffff240)
(lldb) thread backtrace
* thread #1, name = 'linux_logo', stop reason = signal SIGSEGV: invalid address (fault address: 0x7ffefffff240)
  * frame #0: 0x00000008004107dd libc.so.7`memcpy + 205
    frame #1: 0x000000080040e5cd libc.so.7`___lldb_unnamed_symbol1635$$libc.so.7 + 397
    frame #2: 0x00000008003a8a0c libc.so.7`___lldb_unnamed_symbol1024$$libc.so.7 + 14044
    frame #3: 0x0000000800408005 libc.so.7`snprintf + 325
    frame #4: 0x00000000002042c7 linux_logo`main [inlined] generate_sysinfo at linux_logo.c:396
    frame #5: 0x00000000002041cf linux_logo`main [inlined] draw_logo at linux_logo.c:463