#include #include extern size_t __pwrite(int fd, void *buf, size_t count, off_t a,off_t b); size_t __libc_pwrite(int fd, void *buf, size_t count, off_t offset); size_t __libc_pwrite(int fd, void *buf, size_t count, off_t offset) { return __pwrite(fd,buf,count,offset,0); } int pwrite(int fd, void *buf, size_t count, off_t offset) __attribute__((weak,alias("__libc_pwrite")));