search for: syslinux_adv_size

I'd like to be able to save a boolean value across reboots. I believe that being able to store to the auxiliary data vector would satisfy this need, but I'm using syslinux and that doesn't seem to be implemented. While I'm currently using a Lua script, I'm not tied to it, so if there's a way to read and write any persistent filesystem or disk, I'd be happy to switch.

...> While I'm currently using a Lua script, I'm not tied to it, so if > there's a way to read and write any persistent filesystem or disk, I'd > be happy to switch. I think the best would be adding Lua bindings for syslinux_getadv(), syslinux_setadv(), syslinux_adv_write(), syslinux_adv_size() and the BOOTONCE and MENUSAVE tags. And define some policy for allocating new tags... which is the hard part. > Reading through the source code, it seems like most filesystem > operations are read-only Yes, the filesystem drivers in Syslinux are read-only. -- Feri

This is a small set of patches for elflink branch based on feng's elflink branch. hpa, It seems that I can't log on terminus by ssh at home. So I can't push these patches on my git tree. Liu Aleaxander (4): elflink: Cleanup some warnings elflink: Fix the wrong malloc size in enter_cmdline elflink: Do clear screen even if we have no pDraw_Menu method elflink: Add Ctrl-p +

...linux/getadv.c index 456084b..5578313 100644 --- a/com32/elflink/ldlinux/getadv.c +++ b/com32/elflink/ldlinux/getadv.c @@ -39,7 +39,7 @@ const void *syslinux_getadv(int tag, size_t * size) { const uint8_t *p; - size_t left, len; + size_t left; p = syslinux_adv_ptr(); left = syslinux_adv_size(); diff --git a/com32/elflink/ldlinux/ldlinux.c b/com32/elflink/ldlinux/ldlinux.c index b5a4409..31a457f 100644 --- a/com32/elflink/ldlinux/ldlinux.c +++ b/com32/elflink/ldlinux/ldlinux.c @@ -1,6 +1,7 @@ #include <linux/list.h> #include <sys/times.h> #include <stdbool.h> +#incl...

From: Matt Fleming <matt.fleming at intel.com> Since we can't use __intcall() for EFI, and since we can now have the ELF module code resolve all our symbols at runtime, we should delete as many references to __intcall() as possible and just access the symbols directly. The most interesting patch is the support for weak symbols. We need to be able to reference derivative-specific

...t void *data) -{ - uint8_t *p, *advtmp; - size_t rleft, left; - - if ((unsigned)tag - 1 > 254) { - errno = EINVAL; - return -1; /* Impossible tag value */ - } - - if (size > 255) { - errno = ENOSPC; /* Max 255 bytes for a data item */ - return -1; - } - - rleft = left = syslinux_adv_size(); - p = advtmp = alloca(left); - memcpy(p, syslinux_adv_ptr(), left); /* Make working copy */ - - while (rleft >= 2) { - uint8_t ptag = p[0]; - size_t plen = p[1] + 2; - - if (ptag == ADV_END) - break; - - if (ptag == tag) { - /* Found our tag. Delete it. */ - - if (plen &...

...ink/ldlinux/adv.c index be38e89..7869547 100644 --- a/com32/elflink/ldlinux/adv.c +++ b/com32/elflink/ldlinux/adv.c @@ -33,15 +33,21 @@ #include <syslinux/adv.h> #include <klibc/compiler.h> +#include <inttypes.h> #include <com32.h> void *__syslinux_adv_ptr; size_t __syslinux_adv_size; -void __constructor __syslinux_get_adv(void) +extern void adv_init(void); +void __syslinux_init(void) { static com32sys_t reg; + /* Initialize the ADV structure */ + reg.eax.w[0] = 0x0025; + __intcall(0x22, &reg, NULL); + reg.eax.w[0] = 0x001c; __intcall(0x22, &amp...