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Ok, MS-DOS does allow changing RSHA of a directory

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Jonathan Campbell
2020-05-11 10:26:20 -07:00
parent 1a107455c7
commit 6fa29509df
1 changed files with 5 additions and 6 deletions
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11
src/dos/dos_files.cpp
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@@ -921,17 +921,16 @@ bool DOS_SetFileAttr(char const * const name,Bit16u attr)
return false;
}
if ((old_attr ^ attr) & DOS_ATTR_VOLUME) /* change in volume label attribute */
if ((old_attr ^ attr) & DOS_ATTR_VOLUME) { /* change in volume label attribute */
LOG(LOG_DOSMISC,LOG_WARN)("Attempted to change volume label attribute of '%s' with SetFileAttr",name);
return false;
}
if ((old_attr ^ attr) & DOS_ATTR_DIRECTORY) /* change in directory attribute (ex: Windows 95 SETUP.EXE vs WINBOOT.INI) */
LOG(LOG_DOSMISC,LOG_WARN)("Attempted to change directory attribute of '%s' with SetFileAttr",name);
/* define what cannot be changed */
Bit16u attr_mask = (DOS_ATTR_VOLUME|DOS_ATTR_DIRECTORY);
/* you're not supposed to be able to change R/S/H on a directory (RBIL) */
if (old_attr & DOS_ATTR_DIRECTORY)
attr_mask |= DOS_ATTR_ARCHIVE|DOS_ATTR_READ_ONLY|DOS_ATTR_HIDDEN|DOS_ATTR_SYSTEM;
const Bit16u attr_mask = (DOS_ATTR_VOLUME|DOS_ATTR_DIRECTORY);
attr = (attr & ~attr_mask) | (old_attr & attr_mask);