diff options
Diffstat (limited to 'host/include/crossystem.h')
-rw-r--r-- | host/include/crossystem.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/host/include/crossystem.h b/host/include/crossystem.h index c116b0c2..25b9cc0b 100644 --- a/host/include/crossystem.h +++ b/host/include/crossystem.h @@ -10,6 +10,12 @@ extern "C" { #endif +#include <stddef.h> + +/* Recommended size for string property buffers used with + * VbGetSystemPropertyString(). */ +#define VB_MAX_STRING_PROPERTY ((size_t) 8192) + /* Reads a system property integer. * * Returns the property value, or -1 if error. */ @@ -19,8 +25,12 @@ int VbGetSystemPropertyInt(const char* name); * specified size. Returned string will be null-terminated. If the * buffer is too small, the returned string will be truncated. * + * The caller can expect an un-truncated value if the size provided is + * at least VB_MAX_STRING_PROPERTY. + * * Returns the passed buffer, or NULL if error. */ -const char* VbGetSystemPropertyString(const char* name, char* dest, int size); +const char* VbGetSystemPropertyString(const char* name, char* dest, + size_t size); /* Sets a system property integer. * @@ -29,6 +39,9 @@ int VbSetSystemPropertyInt(const char* name, int value); /* Set a system property string. * + * The maximum length of the value accepted depends on the specific + * property, not on VB_MAX_STRING_PROPERTY. + * * Returns 0 if success, -1 if error. */ int VbSetSystemPropertyString(const char* name, const char* value); |