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kernel
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memdisk support spaces between line markers }{ and treat initrd and/or BOOT_IMAGE options as eol and eof indicator

This commit is contained in:
Kenneth J. Davis 2012-11-05 23:37:36 -05:00
parent 0053674575
commit 9c7e161526
1 changed files with 21 additions and 7 deletions
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28
kernel/config.c
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@ -647,7 +647,7 @@ VOID DoConfig(int nPass)
if (mdsk != NULL)
{
printf("MEMDISK version %u.%02u (%lu sectors)\n", mdsk->version, mdsk->version_minor, mdsk->size);
DebugPrintf(("MEMDISK args:{%S} bootdrive=[%0Xh]\n", mdsk->cmdline, (unsigned int)drv));
DebugPrintf(("MEMDISK args:{%S}\n", mdsk->cmdline));
}
#endif
}
@ -670,11 +670,7 @@ VOID DoConfig(int nPass)
if (*mdsk_cfg != '=') continue;
++mdsk_cfg;
/* skip past any extra spaces between = and ( */
while (*mdsk_cfg == ' ')
++mdsk_cfg;
/* assume found extra config options */
break;
}
@ -768,13 +764,18 @@ VOID DoConfig(int nPass)
else if (mdsk_cfg != NULL)
{
pLine = szLine;
/* copy data to near buffer skipping { and } */
/* skip past any extra spaces before ( */
while (*mdsk_cfg == ' ')
++mdsk_cfg;
if (*mdsk_cfg != '{') /* if not at start of line */
{
mdsk_cfg = NULL; /* no longer need data, so set to NULL to flag done */
}
else
{
/* copy data to near buffer skipping { and } */
for (pLine = szLine, mdsk_cfg++; *mdsk_cfg; mdsk_cfg++, pLine++)
{
/* copy character to near buffer */
@ -787,6 +788,19 @@ VOID DoConfig(int nPass)
printf("error - line overflow line %d \n", nCfgLine);
break;
}
/* if initrd=IMAGEFILE or BOOT_IMAGE=memdisk is found, treat same as end of line & end of file */
/* we backtrack to enable use of near pointers in memcmp */
if ((*pLine == '=') && ((pLine - szLine) >= 7))
{
if ((memcmp(pLine-6, "initrd=", 7) == 0) || (memcmp(pLine-10, "BOOT_IMAGE=", 11) == 0))
{
pLine -= 6; /* backup */
if (*pLine == '_') pLine -= 4;
mdsk_cfg = NULL;
break;
}
}
/* if end of this simulated line is found, skip over EOL marker then proceed to process line */
if (*pLine == '}')