diff options
Diffstat (limited to 'src/w32proc.c')
| -rw-r--r-- | src/w32proc.c | 82 |
1 files changed, 55 insertions, 27 deletions
diff --git a/src/w32proc.c b/src/w32proc.c index ab768527658..a7c2cff450d 100644 --- a/src/w32proc.c +++ b/src/w32proc.c @@ -591,6 +591,13 @@ get_result: return pid; } +/* Old versions of w32api headers don't have separate 32-bit and + 64-bit defines, but the one they have matches the 32-bit variety. */ +#ifndef IMAGE_NT_OPTIONAL_HDR32_MAGIC +# define IMAGE_NT_OPTIONAL_HDR32_MAGIC IMAGE_NT_OPTIONAL_HDR_MAGIC +# define IMAGE_OPTIONAL_HEADER32 IMAGE_OPTIONAL_HEADER +#endif + void w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app) { @@ -651,33 +658,54 @@ w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int } else if (nt_header->Signature == IMAGE_NT_SIGNATURE) { - /* Look for cygwin.dll in DLL import list. */ - IMAGE_DATA_DIRECTORY import_dir = - nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; - IMAGE_IMPORT_DESCRIPTOR * imports; - IMAGE_SECTION_HEADER * section; - - section = rva_to_section (import_dir.VirtualAddress, nt_header); - imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable); - - for ( ; imports->Name; imports++) - { - char * dllname = RVA_TO_PTR (imports->Name, section, executable); - - /* The exact name of the cygwin dll has changed with - various releases, but hopefully this will be reasonably - future proof. */ - if (strncmp (dllname, "cygwin", 6) == 0) - { - *is_cygnus_app = TRUE; - break; - } - } - - /* Check whether app is marked as a console or windowed (aka - GUI) app. Accept Posix and OS2 subsytem apps as console - apps. */ - *is_gui_app = (nt_header->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); + IMAGE_DATA_DIRECTORY *data_dir = NULL; + if (nt_header->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) + { + /* Ensure we are using the 32 bit structure. */ + IMAGE_OPTIONAL_HEADER32 *opt + = (IMAGE_OPTIONAL_HEADER32*) &(nt_header->OptionalHeader); + data_dir = opt->DataDirectory; + *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); + } + /* MingW 3.12 has the required 64 bit structs, but in case older + versions don't, only check 64 bit exes if we know how. */ +#ifdef IMAGE_NT_OPTIONAL_HDR64_MAGIC + else if (nt_header->OptionalHeader.Magic + == IMAGE_NT_OPTIONAL_HDR64_MAGIC) + { + IMAGE_OPTIONAL_HEADER64 *opt + = (IMAGE_OPTIONAL_HEADER64*) &(nt_header->OptionalHeader); + data_dir = opt->DataDirectory; + *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); + } +#endif + if (data_dir) + { + /* Look for cygwin.dll in DLL import list. */ + IMAGE_DATA_DIRECTORY import_dir = + data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT]; + IMAGE_IMPORT_DESCRIPTOR * imports; + IMAGE_SECTION_HEADER * section; + + section = rva_to_section (import_dir.VirtualAddress, nt_header); + imports = RVA_TO_PTR (import_dir.VirtualAddress, section, + executable); + + for ( ; imports->Name; imports++) + { + char * dllname = RVA_TO_PTR (imports->Name, section, + executable); + + /* The exact name of the cygwin dll has changed with + various releases, but hopefully this will be reasonably + future proof. */ + if (strncmp (dllname, "cygwin", 6) == 0) + { + *is_cygnus_app = TRUE; + break; + } + } + } } } |