diff options
| -rw-r--r-- | arch/um/kernel/skas/clone.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/um/kernel/skas/clone.c b/arch/um/kernel/skas/clone.c index 4dc55f1..39c0d71 100644 --- a/arch/um/kernel/skas/clone.c +++ b/arch/um/kernel/skas/clone.c @@ -13,11 +13,13 @@ /* This is in a separate file because it needs to be compiled with any * extraneous gcc flags (-pg, -fprofile-arcs, -ftest-coverage) disabled */ + +#define STUB_DATA(field) (((struct stub_data *) UML_CONFIG_STUB_DATA)->field) + void __attribute__ ((__section__ (".__syscall_stub"))) stub_clone_handler(void) { long err; - struct stub_data *from = (struct stub_data *) UML_CONFIG_STUB_DATA; err = stub_syscall2(__NR_clone, CLONE_PARENT | CLONE_FILES | SIGCHLD, UML_CONFIG_STUB_DATA + PAGE_SIZE / 2 - @@ -30,15 +32,15 @@ stub_clone_handler(void) goto out; err = stub_syscall3(__NR_setitimer, ITIMER_VIRTUAL, - (long) &from->timer, 0); + (long) &STUB_DATA(timer), 0); if(err) goto out; err = stub_syscall6(STUB_MMAP_NR, UML_CONFIG_STUB_DATA, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, - from->fd, from->offset); + STUB_DATA(fd), STUB_DATA(offset)); out: /* save current result. Parent: pid; child: retcode of mmap */ - from->err = err; + STUB_DATA(err) = err; trap_myself(); } |