> On Aug 19, 2021, at 20:02 , Chris Johns <chr...@rtems.org> wrote: > > On 20/8/21 1:45 am, junkes wrote: >> Hallo Peter, >> I do not know if this is best practice but I run the following code: >> >> static void >> default_network_dhcpcd(void) >> { >> static const char default_cfg[] = "clientid test client\n"; >> rtems_status_code sc; >> int fd; >> int rv; >> ssize_t n; >> struct stat statbuf; >> >> if (ENOENT == stat("/etc/dhcpcd.conf", &statbuf)) { >> fd = open("/etc/dhcpcd.conf", O_CREAT | O_WRONLY, >> S_IRWXU | S_IRWXG | S_IRWXO); >> assert(fd >= 0); >> >> n = write(fd, default_cfg, sizeof(default_cfg) - 1); >> assert(n == (ssize_t) sizeof(default_cfg) - 1); >> >> static const char fhi_cfg[] = >> "nodhcp6\n" >> "ipv4only\n" >> "option ntp_servers\n" >> "option rtems_cmdline\n" >> "option tftp_server_name\n" >> "option bootfile_name\n" >> "define 129 string rtems_cmdline\n" >> "timeout 0"; >> >> n = write(fd, fhi_cfg, sizeof(fhi_cfg) - 1); >> assert(n == (ssize_t) sizeof(fhi_cfg) - 1); >> >> rv = close(fd); >> assert(rv == 0); >> } >> >> sc = rtems_dhcpcd_start(NULL); >> assert(sc == RTEMS_SUCCESSFUL); >> } > Hienz, this is a good solution and using a file best solution. > > Chris
I see online that DHCP option 129 has three definitions: "PXE - undefined (vendor specific)", "Kernel options Variable length string", and "Call Server IP address". Above does "option rtems_cmdline" and "define 129 string rtems_cmdline" set option 129 to correspond to "Kernel options"? There's no "DHO_" define for 129 in dhcp.h so I assume that's why you need the "define 129". Option 17 is defined in dhcp.h ("#define DHO_ROOT_PATH 17") so I assume I just add "option root_path". I'll try it later today. Peter ----------------- Peter Dufault HD Associates, Inc. Software and System Engineering
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