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config: allow to delete variable with empty SET command

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C. Masloch 2023-08-30 11:01:37 +02:00 committed by Kenneth J Davis
parent 3dafa54e8b
commit 24d19cd05c
1 changed files with 7 additions and 3 deletions
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10
kernel/config.c
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@ -2769,14 +2769,18 @@ STATIC VOID CmdSet(BYTE *pLine)
pLine = skipwh(pLine); /* scan() stops at the equal sign or space */ pLine = skipwh(pLine); /* scan() stops at the equal sign or space */
if (*pLine == '=') /* equal sign is required */ if (*pLine == '=') /* equal sign is required */
{ {
int size; int size, namesize;
strupr(szBuf); /* all environment variables must be uppercase */ strupr(szBuf); /* all environment variables must be uppercase */
size = strlen(szBuf); namesize = strlen(szBuf);
strcat(szBuf, "="); strcat(szBuf, "=");
deletevar(szBuf, size); deletevar(szBuf, namesize);
pLine = skipwh(++pLine); pLine = skipwh(++pLine);
strcat(szBuf, pLine); /* append the variable value (may include spaces) */ strcat(szBuf, pLine); /* append the variable value (may include spaces) */
size = strlen(szBuf); size = strlen(szBuf);
if (size == namesize + 1) {
/* empty variable ? then just delete. */
return;
}
if (size < master_env + sizeof(master_env) - envp - 1 - 2) if (size < master_env + sizeof(master_env) - envp - 1 - 2)
{ /* must end with two consequtive zeros */ { /* must end with two consequtive zeros */
fstrcpy(envp, szBuf); fstrcpy(envp, szBuf);