/*
- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
static boolean_t isargsep( char c);
static boolean_t israngesep( char c);
+#ifndef CONFIG_EMBEDDED
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);
struct i24 {
- int32_t i24 : 24;
+ int32_t i24 : 24;
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;
- long long val;
+ long long val = 0;
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;
- while(*args && isargsep(*args)) args++;
+ while (*args && isargsep(*args)) {
+ args++;
+ }
- while (*args)
- {
- if (*args == '-')
+ while (*args) {
+ if (*args == '-') {
arg_boolean = TRUE;
- else
+ } else {
arg_boolean = FALSE;
+ }
cp = args;
- while (!isargsep (*cp) && *cp != '=')
+ while (!isargsep(*cp) && *cp != '=') {
cp++;
- if (*cp != '=' && !arg_boolean)
+ }
+ if (*cp != '=' && !arg_boolean) {
goto gotit;
+ }
c = *cp;
- i = cp-args;
+ i = cp - args;
if (strncmp(args, arg_string, i) ||
- (i!=strlen(arg_string)))
+ (i != strlen(arg_string))) {
goto gotit;
+ }
+
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 {
- while (*cp && isargsep (*cp))
+ while (*cp && isargsep(*cp)) {
cp++;
+ }
if (*cp == '=' && c != '=') {
- args = cp+1;
+ args = cp + 1;
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;
}
- 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;
- 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;
- break;
+ }
+#endif
+ break;
}
goto gotit;
}
gotit:
/* Skip over current arg */
- while(!isargsep(*args)) args++;
+ while (!isargsep(*args)) {
+ 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)
{
- 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)
{
- 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,
*to++ = *from++;
}
*to = 0;
- return(i);
+ return i;
}
+#endif
static int
argstrcpy2(
*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) {
- 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;
}
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) {
- switch(*s) {
-
+ switch (*s) {
case 'x':
radix = 16;
s++;
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:
- 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';
- } else if ((radix == 16) &&
- ((c >= 'a') && (c <= 'f'))) {
+ } else if ((radix == 16) &&
+ ((c >= 'a') && (c <= 'f'))) {
c -= 'a' - 10;
- } else if ((radix == 16) &&
- ((c >= 'A') && (c <= 'F'))) {
+ } else if ((radix == 16) &&
+ ((c >= 'A') && (c <= 'F'))) {
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;
- break;
+ break;
} else if (c == 'g' || c == 'G') {
sign *= 1024 * 1024 * 1024;
- break;
+ break;
} else {
- return (STR);
- }
- if (c >= radix)
- return (STR);
+ return STR;
+ }
+ if (c >= radix) {
+ return STR;
+ }
intval *= radix;
intval += c;
}
- if (!issep(c) && !issep(*s))
- return STR;
+ if (!issep(c) && !issep(*s)) {
+ return STR;
+ }
*val = intval * sign;
- return (NUM);
+ return NUM;
}
*val = 1;
- return (NUM);
+ return NUM;
}
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;
+#else
+ return TRUE;
+#endif
}
boolean_t
PE_get_default(
- const char *property_name,
- void *property_ptr,
+ const char *property_name,
+ void *property_ptr,
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)) {
-
/*
* 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;
+ }
/*
* 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;
+ }
/*
* Copy back the precisely-sized result.
projects / apple / xnu.git / blobdiff