ReactOS 0.4.15-dev-8236-g99f0937
ntldropts.c File Reference
#include <freeldr.h>
#include "ntldropts.h"
Include dependency graph for ntldropts.c:

Go to the source code of this file.

Functions

PCSTR NtLdrGetNextOption (IN OUT PCSTR *Options, OUT PULONG OptionLength OPTIONAL)
 
PCSTR NtLdrGetOptionExN (IN PCSTR Options, IN PCCH OptionName, IN ULONG OptNameLength, OUT PULONG OptionLength OPTIONAL)
 
PCSTR NtLdrGetOptionEx (IN PCSTR Options, IN PCSTR OptionName, OUT PULONG OptionLength OPTIONAL)
 
PCSTR NtLdrGetOption (IN PCSTR Options, IN PCSTR OptionName)
 
VOID NtLdrAddOptions (IN OUT PSTR LoadOptions, IN ULONG BufferSize, IN BOOLEAN Append, IN PCSTR NewOptions OPTIONAL)
 

Function Documentation

◆ NtLdrAddOptions()

VOID NtLdrAddOptions ( IN OUT PSTR  LoadOptions,
IN ULONG  BufferSize,
IN BOOLEAN  Append,
IN PCSTR NewOptions  OPTIONAL 
)

Definition at line 140 of file ntldropts.c.

145{
146 ULONG OptionsLength;
147 ULONG NewOptsLength;
149
150 if (!LoadOptions || (BufferSize == 0))
151 return;
152 // ASSERT(strlen(LoadOptions) + 1 <= BufferSize);
153
154 if (!NewOptions || !*NewOptions)
155 return;
156
157 if (Append)
158 {
159 OptionsLength = (ULONG)strlen(LoadOptions);
160 OptionsLength = min(OptionsLength, BufferSize-1);
161
162 /* Add a whitespace separator if needed */
163 if (OptionsLength != 0 &&
164 (LoadOptions[OptionsLength-1] != ' ') &&
165 (LoadOptions[OptionsLength-1] != '\t') &&
166 (*NewOptions != '\0') &&
167 (*NewOptions != ' ') &&
168 (*NewOptions != '\t'))
169 {
170 RtlStringCbCatA(LoadOptions, BufferSize * sizeof(CHAR), " ");
171 }
172
173 /* Append the options */
174 RtlStringCbCatA(LoadOptions, BufferSize * sizeof(CHAR), NewOptions);
175 }
176 else
177 {
178 NewOptsLength = (ULONG)strlen(NewOptions);
179 NewOptsLength = min(NewOptsLength, BufferSize-1);
180
181 /* Add a whitespace separator if needed */
183 if (NewOptsLength != 0 &&
184 (NewOptions[NewOptsLength-1] != ' ') &&
185 (NewOptions[NewOptsLength-1] != '\t') &&
186 (*LoadOptions != '\0') &&
187 (*LoadOptions != ' ') &&
188 (*LoadOptions != '\t'))
189 {
191 ++NewOptsLength;
192 }
193
194 /*
195 * Move the original load options forward (possibly truncating them
196 * at the end if the buffer is not large enough) to make place for
197 * the options to prepend.
198 */
199 OptionsLength = (ULONG)strlen(LoadOptions) + 1;
200 OptionsLength = min(OptionsLength, BufferSize - NewOptsLength);
201 RtlMoveMemory(LoadOptions + NewOptsLength,
202 LoadOptions,
203 OptionsLength * sizeof(CHAR));
204 /* NULL-terminate */
205 (LoadOptions + NewOptsLength)[OptionsLength-1] = '\0';
206
207 /* Restore the new options length back to its original value */
208 if (AddSeparator) --NewOptsLength;
209 /* Prepend the options and add the whitespace separator if needed */
210 strncpy(LoadOptions, NewOptions, NewOptsLength);
211 if (AddSeparator) LoadOptions[NewOptsLength] = ' ';
212 }
213}
unsigned char BOOLEAN
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
char * strncpy(char *DstString, const char *SrcString, ACPI_SIZE Count)
Definition: utclib.c:427
static void AddSeparator(HWND hwndToolBar)
Definition: wordpad.c:169
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define min(a, b)
Definition: monoChain.cc:55
NTSTRSAFEAPI RtlStringCbCatA(_Inout_updates_bytes_(cbDest) _Always_(_Post_z_) NTSTRSAFE_PSTR pszDest, _In_ size_t cbDest, _In_ NTSTRSAFE_PCSTR pszSrc)
Definition: ntstrsafe.h:625
#define RtlMoveMemory(Destination, Source, Length)
Definition: typedefs.h:264
uint32_t ULONG
Definition: typedefs.h:59
_In_ WDFMEMORY _Out_opt_ size_t * BufferSize
Definition: wdfmemory.h:254
char CHAR
Definition: xmlstorage.h:175

Referenced by NtLdrUpdateLoadOptions().

◆ NtLdrGetNextOption()

PCSTR NtLdrGetNextOption ( IN OUT PCSTR Options,
OUT PULONG OptionLength  OPTIONAL 
)

Definition at line 16 of file ntldropts.c.

19{
21 PCSTR Option = NULL;
22 ULONG Length = 0;
23
24 if (OptionLength)
25 *OptionLength = 0;
26
27 if (!Options || !*Options)
28 return NULL;
29
30 /* Loop over each option */
32 while (*NextOption)
33 {
34 /* Skip possible initial whitespace */
35 NextOption += strspn(NextOption, " \t");
36
37 /* Stop now if we have already found an option.
38 * NextOption points to the next following option. */
39 if (Option)
40 break;
41
42 /*
43 * Check whether a new option starts. Options are delimited
44 * with an option separator '/' or with whitespace.
45 */
46 if (*NextOption == '/')
47 ++NextOption;
48
49 /* Get the actual length of the option until
50 * the next whitespace or option separator. */
51 Length = (ULONG)strcspn(NextOption, " \t/");
52
53 /* Retrieve the option if present and go to the beginning of the next one */
54 if (Length != 0)
55 Option = NextOption;
56
57 /* Restart after the end of the option */
59 }
60
62 if (Option && OptionLength)
63 *OptionLength = Length;
64 return Option;
65}
#define NULL
Definition: types.h:112
static char * NextOption(const char *const ostr)
Definition: getopt.c:31
_In_ ULONG _In_ ULONG _In_ ULONG Length
Definition: ntddpcm.h:102
_Check_return_ _CRTIMP size_t __cdecl strspn(_In_z_ const char *_Str, _In_z_ const char *_Control)
_Check_return_ _CRTIMP size_t __cdecl strcspn(_In_z_ const char *_Str, _In_z_ const char *_Control)
const char * PCSTR
Definition: typedefs.h:52
_In_ PWDFDEVICE_INIT _In_ PWDF_REMOVE_LOCK_OPTIONS Options
Definition: wdfdevice.h:3534

Referenced by NtLdrGetHigherPriorityOptions(), NtLdrGetOptionExN(), and NtLdrUpdateLoadOptions().

◆ NtLdrGetOption()

PCSTR NtLdrGetOption ( IN PCSTR  Options,
IN PCSTR  OptionName 
)

Definition at line 128 of file ntldropts.c.

131{
132 return NtLdrGetOptionEx(Options, OptionName, NULL);
133}
PCSTR NtLdrGetOptionEx(IN PCSTR Options, IN PCSTR OptionName, OUT PULONG OptionLength OPTIONAL)
Definition: ntldropts.c:117

Referenced by GetSerialMouseDetectionBitmap(), LoadAndBootWindows(), LoadReactOSSetup(), LoadWindowsCore(), RamDiskInitialize(), and WinLdrSetupEms().

◆ NtLdrGetOptionEx()

PCSTR NtLdrGetOptionEx ( IN PCSTR  Options,
IN PCSTR  OptionName,
OUT PULONG OptionLength  OPTIONAL 
)

Definition at line 117 of file ntldropts.c.

121{
122 return NtLdrGetOptionExN(Options, OptionName,
123 (ULONG)strlen(OptionName),
124 OptionLength);
125}
PCSTR NtLdrGetOptionExN(IN PCSTR Options, IN PCCH OptionName, IN ULONG OptNameLength, OUT PULONG OptionLength OPTIONAL)
Definition: ntldropts.c:73

Referenced by GetSerialMouseDetectionBitmap(), LoadAndBootWindows(), LoadReactOSSetup(), LoadWindowsCore(), NtLdrGetOption(), and RamDiskInitialize().

◆ NtLdrGetOptionExN()

PCSTR NtLdrGetOptionExN ( IN PCSTR  Options,
IN PCCH  OptionName,
IN ULONG  OptNameLength,
OUT PULONG OptionLength  OPTIONAL 
)

Definition at line 73 of file ntldropts.c.

78{
79 PCSTR NextOptions;
80 PCSTR Option = NULL;
81 ULONG OptLength = 0;
82
83 if (OptionLength)
84 *OptionLength = 0;
85
86 if (!Options || !*Options)
87 return NULL;
88 if (!OptionName || (OptNameLength == 0) || !*OptionName)
89 return NULL;
90
91 NextOptions = Options;
92 while ((Option = NtLdrGetNextOption(&NextOptions, &OptLength)))
93 {
94 /*
95 * Check whether the option to find exactly matches the current
96 * load option, or is a prefix thereof if this is an option with
97 * appended data.
98 */
99 if ((OptLength >= OptNameLength) &&
100 (_strnicmp(Option, OptionName, OptNameLength) == 0))
101 {
102 if ((OptLength == OptNameLength) ||
103 (OptionName[OptNameLength-1] == '=') ||
104 (OptionName[OptNameLength-1] == ':'))
105 {
106 break;
107 }
108 }
109 }
110
111 if (Option && OptionLength)
112 *OptionLength = OptLength;
113 return Option;
114}
#define _strnicmp(_String1, _String2, _MaxCount)
Definition: compat.h:23
PCSTR NtLdrGetNextOption(IN OUT PCSTR *Options, OUT PULONG OptionLength OPTIONAL)
Definition: ntldropts.c:16

Referenced by NtLdrGetHigherPriorityOptions(), and NtLdrGetOptionEx().