xnu-6153.101.6.tar.gz

[apple/xnu.git] / pexpert / gen / bootargs.c

diff --git a/pexpert/gen/bootargs.c b/pexpert/gen/bootargs.c
index c5efead48273faaf190fecdbd5ff09dff00f54d9..fddac8d3e1d67497f2b4acf51354db4cd5f9c015 100644 (file)
--- a/pexpert/gen/bootargs.c
+++ b/pexpert/gen/bootargs.c
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *


@@ -32,8 +32,10 @@ typedef boolean_t (*argsep_func_t) (char c);
 
 static boolean_t isargsep( char c);
 static boolean_t israngesep( char c);
 
 static boolean_t isargsep( char c);
 static boolean_t israngesep( char c);

+#ifndef CONFIG_EMBEDDED

 static int argstrcpy(char *from, char *to);
 static int argstrcpy(char *from, char *to);

-static int argstrcpy2(char *from,char *to, unsigned maxlen);
+#endif
+static int argstrcpy2(char *from, char *to, unsigned maxlen);

 static int argnumcpy(long long val, void *to, unsigned maxlen);
 static int getval(char *s, long long *val, argsep_func_t issep, boolean_t skip_equal_sign);
 boolean_t get_range_bounds(char * c, int64_t * lower, int64_t * upper);
 static int argnumcpy(long long val, void *to, unsigned maxlen);
 static int getval(char *s, long long *val, argsep_func_t issep, boolean_t skip_equal_sign);
 boolean_t get_range_bounds(char * c, int64_t * lower, int64_t * upper);


@@ -42,129 +44,175 @@ extern int IODTGetDefault(const char *key, void *infoAddr, unsigned int infoSize
 
 
 struct i24 {
 
 
 struct i24 {

-       int32_t i24 : 24;
+       int32_t i24 : 24;

        int32_t _pad : 8;
 };
 
        int32_t _pad : 8;
 };
 

-#define        NUM     0
-#define        STR     1
-
-#if !defined(__LP64__) && !defined(__arm__)
-boolean_t
-PE_parse_boot_arg(
-       const char  *arg_string,
-       void            *arg_ptr)
-{
-       int max_len = -1;
-
+#define NUM     0
+#define STR     1

 
 

-       return PE_parse_boot_argn(arg_string, arg_ptr, max_len);
-}
-#endif
-
-boolean_t
-PE_parse_boot_argn(
-       const char      *arg_string,
-       void            *arg_ptr,
-       int                     max_len)
+static boolean_t
+PE_parse_boot_argn_internal(
+       const char *arg_string,
+       void *      arg_ptr,
+       int         max_len,
+       boolean_t   force_string)

 {
        char *args;
        char *cp, c;
        uintptr_t i;
 {
        char *args;
        char *cp, c;
        uintptr_t i;

-       long long val;
+       long long val = 0;

        boolean_t arg_boolean;
        boolean_t arg_found;
 
        args = PE_boot_args();
        boolean_t arg_boolean;
        boolean_t arg_found;
 
        args = PE_boot_args();

-       if (*args == '\0') return FALSE;
+       if (*args == '\0') {
+               return FALSE;
+       }

 
 

+#ifdef CONFIG_EMBEDDED
+       if (max_len == -1) {
+               return FALSE;
+       }
+#endif

 
        arg_found = FALSE;
 
 
        arg_found = FALSE;
 

-       while(*args && isargsep(*args)) args++;
+       while (*args && isargsep(*args)) {
+               args++;
+       }

 
 

-       while (*args)
-       {
-               if (*args == '-')
+       while (*args) {
+               if (*args == '-') {

                        arg_boolean = TRUE;
                        arg_boolean = TRUE;

-               else
+               } else {

                        arg_boolean = FALSE;
                        arg_boolean = FALSE;

+               }

 
                cp = args;
 
                cp = args;

-               while (!isargsep (*cp) && *cp != '=')
+               while (!isargsep(*cp) && *cp != '=') {

                        cp++;
                        cp++;

-               if (*cp != '=' && !arg_boolean)
+               }
+               if (*cp != '=' && !arg_boolean) {

                        goto gotit;
                        goto gotit;

+               }

 
                c = *cp;
 
 
                c = *cp;
 

-               i = cp-args;
+               i = cp - args;

                if (strncmp(args, arg_string, i) ||
                if (strncmp(args, arg_string, i) ||

-                   (i!=strlen(arg_string)))
+                   (i != strlen(arg_string))) {

                        goto gotit;
                        goto gotit;

+               }
+

                if (arg_boolean) {
                if (arg_boolean) {

-                       argnumcpy(1, arg_ptr, max_len);
-                       arg_found = TRUE;
+                       if (!force_string) {
+                               if (max_len > 0) {
+                                       argnumcpy(1, arg_ptr, max_len);/* max_len of 0 performs no copy at all*/
+                                       arg_found = TRUE;
+                               } else if (max_len == 0) {
+                                       arg_found = TRUE;
+                               }
+                       }

                        break;
                } else {
                        break;
                } else {

-                       while (*cp && isargsep (*cp))
+                       while (*cp && isargsep(*cp)) {

                                cp++;
                                cp++;

+                       }

                        if (*cp == '=' && c != '=') {
                        if (*cp == '=' && c != '=') {

-                               args = cp+1;
+                               args = cp + 1;

                                goto gotit;
                        }
                                goto gotit;
                        }

-                       if ('_' == *arg_string) /* Force a string copy if the argument name begins with an underscore */
-                       {
-                               int hacklen = 17 > max_len ? 17 : max_len;
-                               argstrcpy2 (++cp, (char *)arg_ptr, hacklen - 1); /* Hack - terminate after 16 characters */
-                               arg_found = TRUE;
+                       if ('_' == *arg_string) { /* Force a string copy if the argument name begins with an underscore */
+                               if (max_len > 0) {
+                                       int hacklen = 17 > max_len ? 17 : max_len;
+                                       argstrcpy2(++cp, (char *)arg_ptr, hacklen - 1);  /* Hack - terminate after 16 characters */
+                                       arg_found = TRUE;
+                               } else if (max_len == 0) {
+                                       arg_found = TRUE;
+                               }

                                break;
                        }
                                break;
                        }

-                       switch (getval(cp, &val, isargsep, FALSE))
-                       {
-                               case NUM:
+                       switch ((force_string && *cp == '=') ? STR : getval(cp, &val, isargsep, FALSE)) {
+                       case NUM:
+                               if (max_len > 0) {

                                        argnumcpy(val, arg_ptr, max_len);
                                        arg_found = TRUE;
                                        argnumcpy(val, arg_ptr, max_len);
                                        arg_found = TRUE;

-                                       break;
-                               case STR:
-                                       if(max_len > 0) //max_len of 0 performs no copy at all
-                                               argstrcpy2(++cp, (char *)arg_ptr, max_len - 1);
-                                       else if(max_len == -1) // unreachable on embedded
-                                               argstrcpy(++cp, (char *)arg_ptr);
+                               } else if (max_len == 0) {
+                                       arg_found = TRUE;
+                               }
+                               break;
+                       case STR:
+                               if (max_len > 0) {
+                                       argstrcpy2(++cp, (char *)arg_ptr, max_len - 1);        /*max_len of 0 performs no copy at all*/
+                                       arg_found = TRUE;
+                               } else if (max_len == 0) {
+                                       arg_found = TRUE;
+                               }
+#if !CONFIG_EMBEDDED
+                               else if (max_len == -1) {         /* unreachable on embedded */
+                                       argstrcpy(++cp, (char *)arg_ptr);

                                        arg_found = TRUE;
                                        arg_found = TRUE;

-                                       break;
+                               }
+#endif
+                               break;

                        }
                        goto gotit;
                }
 gotit:
                /* Skip over current arg */
                        }
                        goto gotit;
                }
 gotit:
                /* Skip over current arg */

-               while(!isargsep(*args)) args++;
+               while (!isargsep(*args)) {
+                       args++;
+               }

 
                /* Skip leading white space (catch end of args) */
 
                /* Skip leading white space (catch end of args) */

-               while(*args && isargsep(*args)) args++;
+               while (*args && isargsep(*args)) {
+                       args++;
+               }

        }
 
        }
 

-       return(arg_found);
+       return arg_found;
+}
+
+boolean_t
+PE_parse_boot_argn(
+       const char      *arg_string,
+       void            *arg_ptr,
+       int                     max_len)
+{
+       return PE_parse_boot_argn_internal(arg_string, arg_ptr, max_len, FALSE);
+}
+
+boolean_t
+PE_parse_boot_arg_str(
+       const char      *arg_string,
+       char            *arg_ptr,
+       int                     strlen)
+{
+       return PE_parse_boot_argn_internal(arg_string, arg_ptr, strlen, TRUE);

 }
 
 static boolean_t
 isargsep(char c)
 {
 }
 
 static boolean_t
 isargsep(char c)
 {

-       if (c == ' ' || c == '\0' || c == '\t')
-               return (TRUE);
-       else
-               return (FALSE);
+       if (c == ' ' || c == '\0' || c == '\t') {
+               return TRUE;
+       } else {
+               return FALSE;
+       }

 }
 
 static boolean_t
 israngesep(char c)
 {
 }
 
 static boolean_t
 israngesep(char c)
 {

-       if (isargsep(c) || c == '_' || c == ',')
-               return (TRUE);
-       else
-               return (FALSE);
+       if (isargsep(c) || c == '_' || c == ',') {
+               return TRUE;
+       } else {
+               return FALSE;
+       }

 }
 
 }
 

+#if !CONFIG_EMBEDDED

 static int
 argstrcpy(
        char *from,
 static int
 argstrcpy(
        char *from,


@@ -177,8 +225,9 @@ argstrcpy(
                *to++ = *from++;
        }
        *to = 0;
                *to++ = *from++;
        }
        *to = 0;

-       return(i);
+       return i;

 }
 }

+#endif

 
 static int
 argstrcpy2(
 
 static int
 argstrcpy2(


@@ -193,35 +242,36 @@ argstrcpy2(
                *to++ = *from++;
        }
        *to = 0;
                *to++ = *from++;
        }
        *to = 0;

-       return(i);
+       return i;

 }
 
 }
 

-static int argnumcpy(long long val, void *to, unsigned maxlen)
+static int
+argnumcpy(long long val, void *to, unsigned maxlen)

 {
        switch (maxlen) {
 {
        switch (maxlen) {

-               case 0:
-                       /* No write-back, caller just wants to know if arg was found */
-                       break;
-               case 1:
-                       *(int8_t *)to = val;
-                       break;
-               case 2:
-                       *(int16_t *)to = val;
-                       break;
-               case 3:
-                       /* Unlikely in practice */
-                       ((struct i24 *)to)->i24 = val;
-                       break;
-               case 4:
-                       *(int32_t *)to = val;
-                       break;
-               case 8:
-                       *(int64_t *)to = val;
-                       break;
-               default:
-                       *(int32_t *)to = val;
-                       maxlen = 4;
-                       break;
+       case 0:
+               /* No write-back, caller just wants to know if arg was found */
+               break;
+       case 1:
+               *(int8_t *)to = val;
+               break;
+       case 2:
+               *(int16_t *)to = val;
+               break;
+       case 3:
+               /* Unlikely in practice */
+               ((struct i24 *)to)->i24 = val;
+               break;
+       case 4:
+               *(int32_t *)to = val;
+               break;
+       case 8:
+               *(int64_t *)to = val;
+               break;
+       default:
+               *(int32_t *)to = val;
+               maxlen = 4;
+               break;

        }
 
        return (int)maxlen;
        }
 
        return (int)maxlen;


@@ -245,13 +295,14 @@ getval(
        }
 
        if (has_value || skip_equal_sign) {
        }
 
        if (has_value || skip_equal_sign) {

-               if (*s == '-')
-                       sign = -1, s++;
-               intval = *s++-'0';
+               if (*s == '-') {
+                       sign = -1;
+                       s++;
+               }
+               intval = *s++ - '0';

                radix = 10;
                if (intval == 0) {
                radix = 10;
                if (intval == 0) {

-                       switch(*s) {
-
+                       switch (*s) {

                        case 'x':
                                radix = 16;
                                s++;
                        case 'x':
                                radix = 16;
                                s++;


@@ -264,94 +315,108 @@ getval(
 
                        case '0': case '1': case '2': case '3':
                        case '4': case '5': case '6': case '7':
 
                        case '0': case '1': case '2': case '3':
                        case '4': case '5': case '6': case '7':

-                               intval = *s-'0';
+                               intval = *s - '0';

                                s++;
                                radix = 8;
                                break;
 
                        default:
                                s++;
                                radix = 8;
                                break;
 
                        default:

-                               if (!issep(*s))
-                                       return (STR);
+                               if (!issep(*s)) {
+                                       return STR;
+                               }
+                       }
+               } else if (intval >= radix) {
+                       return STR;
+               }
+               for (;;) {
+                       c = *s++;
+                       if (issep(c)) {
+                               break;

                        }
                        }

-                } else if (intval >= radix) {
-                    return (STR);
-                }
-               for(;;) {
-                        c = *s++;
-                        if (issep(c))
-                            break;
-                        if ((radix <= 10) &&
-                            ((c >= '0') && (c <= ('9' - (10 - radix))))) {
-                                c -= '0';
-                        } else if ((radix == 16) &&
-                                   ((c >= '0') && (c <= '9'))) {
+                       if ((radix <= 10) &&
+                           ((c >= '0') && (c <= ('9' - (10 - radix))))) {
+                               c -= '0';
+                       } else if ((radix == 16) &&
+                           ((c >= '0') && (c <= '9'))) {

                                c -= '0';
                                c -= '0';

-                        } else if ((radix == 16) &&
-                                   ((c >= 'a') && (c <= 'f'))) {
+                       } else if ((radix == 16) &&
+                           ((c >= 'a') && (c <= 'f'))) {

                                c -= 'a' - 10;
                                c -= 'a' - 10;

-                        } else if ((radix == 16) &&
-                                   ((c >= 'A') && (c <= 'F'))) {
+                       } else if ((radix == 16) &&
+                           ((c >= 'A') && (c <= 'F'))) {

                                c -= 'A' - 10;
                                c -= 'A' - 10;

-                        } else if (c == 'k' || c == 'K') {
+                       } else if (c == 'k' || c == 'K') {

                                sign *= 1024;
                                break;
                        } else if (c == 'm' || c == 'M') {
                                sign *= 1024 * 1024;
                                sign *= 1024;
                                break;
                        } else if (c == 'm' || c == 'M') {
                                sign *= 1024 * 1024;

-                                break;
+                               break;

                        } else if (c == 'g' || c == 'G') {
                                sign *= 1024 * 1024 * 1024;
                        } else if (c == 'g' || c == 'G') {
                                sign *= 1024 * 1024 * 1024;

-                                break;
+                               break;

                        } else {
                        } else {

-                               return (STR);
-                        }
-                       if (c >= radix)
-                               return (STR);
+                               return STR;
+                       }
+                       if (c >= radix) {
+                               return STR;
+                       }

                        intval *= radix;
                        intval += c;
                }
                        intval *= radix;
                        intval += c;
                }

-                if (!issep(c) && !issep(*s))
-                    return STR;
+               if (!issep(c) && !issep(*s)) {
+                       return STR;
+               }

                *val = intval * sign;
                *val = intval * sign;

-               return (NUM);
+               return NUM;

        }
        *val = 1;
        }
        *val = 1;

-       return (NUM);
+       return NUM;

 }
 
 boolean_t
 PE_imgsrc_mount_supported()
 {
 }
 
 boolean_t
 PE_imgsrc_mount_supported()
 {

+#if CONFIG_LOCKERBOOT
+       /*
+        * Booting from a locker requires that we be able to mount the containing
+        * volume inside the locker. This looks redundant, but this is here in case
+        * the other conditional needs to be modified for some reason.
+        */

        return TRUE;
        return TRUE;

+#else
+       return TRUE;
+#endif

 }
 
 boolean_t
 PE_get_default(
 }
 
 boolean_t
 PE_get_default(

-       const char      *property_name,
-       void            *property_ptr,
+       const char      *property_name,
+       void            *property_ptr,

        unsigned int max_property)
 {
        unsigned int max_property)
 {

-       DTEntry         dte;
-       void            **property_data;
+       DTEntry         dte;
+       void            **property_data;

        unsigned int property_size;
 
        /*
         * Look for the property using the PE DT support.
         */
        if (kSuccess == DTLookupEntry(NULL, "/defaults", &dte)) {
        unsigned int property_size;
 
        /*
         * Look for the property using the PE DT support.
         */
        if (kSuccess == DTLookupEntry(NULL, "/defaults", &dte)) {

-

                /*
                 * We have a /defaults node, look for the named property.
                 */
                /*
                 * We have a /defaults node, look for the named property.
                 */

-               if (kSuccess != DTGetProperty(dte, property_name, (void **)&property_data, &property_size))
+               if (kSuccess != DTGetProperty(dte, property_name, (void **)&property_data, &property_size)) {

                        return FALSE;
                        return FALSE;

+               }

 
                /*
                 * This would be a fine place to do smart argument size management for 32/64
                 * translation, but for now we'll insist that callers know how big their
                 * default values are.
                 */
 
                /*
                 * This would be a fine place to do smart argument size management for 32/64
                 * translation, but for now we'll insist that callers know how big their
                 * default values are.
                 */

-               if (property_size > max_property)
+               if (property_size > max_property) {

                        return FALSE;
                        return FALSE;

+               }

 
                /*
                 * Copy back the precisely-sized result.
 
                /*
                 * Copy back the precisely-sized result.