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Load library using file handle.

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* This patch enables dlopen by file descriptor
   instead of path/name.

Bug: 15984217
Change-Id: Ib39051e00567fb97070bf96d8ce63993877c0a01
This commit is contained in:
Dmitriy Ivanov
2014-07-01 14:10:16 -07:00
parent 4d299a2cf7
commit 04dc91ae76
7 changed files with 122 additions and 9 deletions
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9
libc/include/android/dlext.h
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@@ -49,11 +49,17 @@ enum {
*/
ANDROID_DLEXT_USE_RELRO = 0x8,
/* Instruct dlopen to use library_fd instead of opening file by name.
* The filename parameter is still used to identify the library.
*/
ANDROID_DLEXT_USE_LIBRARY_FD = 0x10,
/* Mask of valid bits */
ANDROID_DLEXT_VALID_FLAG_BITS = ANDROID_DLEXT_RESERVED_ADDRESS |
ANDROID_DLEXT_RESERVED_ADDRESS_HINT |
ANDROID_DLEXT_WRITE_RELRO |
ANDROID_DLEXT_USE_RELRO,
ANDROID_DLEXT_USE_RELRO |
ANDROID_DLEXT_USE_LIBRARY_FD,
};
typedef struct {
@@ -61,6 +67,7 @@ typedef struct {
void* reserved_addr;
size_t reserved_size;
int relro_fd;
int library_fd;
} android_dlextinfo;
extern void* android_dlopen_ext(const char* filename, int flag, const android_dlextinfo* extinfo);