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arm64: C/R PAC keys

Browse source 
PAC stands for Pointer Authentication Code. Each process has 5 PAC keys
and a mask of enabled keys. All this properties have to be C/R-ed.

As they are per-process protperties, we can save/restore them just for
one thread.

Signed-off-by: Andrei Vagin <avagin@google.com>
This commit is contained in:
AV 2025-03-03 19:14:54 +00:00 • committed by Andrei Vagin
parent c5d46d86a8
commit 8ae5db37bb
31 changed files with 244 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

2
compel/arch/aarch64/src/lib/infect.c
View file

@ -81,7 +81,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
goto err;
}
ret = save(arg, regs, fpsimd);
ret = save(pid, arg, regs, fpsimd);
err:
return ret;
}

2
compel/arch/arm/src/lib/infect.c
View file

@ -94,7 +94,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
}
}
ret = save(arg, regs, vfp);
ret = save(pid, arg, regs, vfp);
err:
return ret;
}

2
compel/arch/loongarch64/src/lib/infect.c
View file

@ -91,7 +91,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
goto err;
}
ret = save(arg, regs, fpregs);
ret = save(pid, arg, regs, fpregs);
err:
return 0;
}

2
compel/arch/mips/src/lib/infect.c
View file

@ -149,7 +149,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
regs->regs[0] = 0;
}
ret = save(arg, regs, xs);
ret = save(pid, arg, regs, xs);
return ret;
}

2
compel/arch/ppc64/src/lib/infect.c
View file

@ -400,7 +400,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
if (ret)
return ret;
return save(arg, regs, fpregs);
return save(pid, arg, regs, fpregs);
}
int compel_set_task_ext_regs(pid_t pid, user_fpregs_struct_t *ext_regs)

2
compel/arch/riscv64/src/lib/infect.c
View file

@ -92,7 +92,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
return -1;
}
ret = save(arg, regs, fpsimd);
ret = save(pid, arg, regs, fpsimd);
return ret;
}

2
compel/arch/s390/src/lib/infect.c
View file

@ -348,7 +348,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
}
}
/* Call save_task_regs() */
return save(arg, regs, fpregs);
return save(pid, arg, regs, fpregs);
}
int compel_set_task_ext_regs(pid_t pid, user_fpregs_struct_t *ext_regs)

2
compel/arch/x86/src/lib/infect.c
View file

@ -453,7 +453,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
goto err;
out:
ret = save(arg, regs, xs);
ret = save(pid, arg, regs, xs);
err:
return ret;
}

2
compel/include/uapi/infect.h
View file

@ -97,7 +97,7 @@ extern k_rtsigset_t *compel_thread_sigmask(struct parasite_thread_ctl *tctl);
struct rt_sigframe;
typedef int (*open_proc_fn)(int pid, int mode, const char *fmt, ...) __attribute__((__format__(__printf__, 3, 4)));
typedef int (*save_regs_t)(void *, user_regs_struct_t *, user_fpregs_struct_t *);
typedef int (*save_regs_t)(pid_t pid, void *, user_regs_struct_t *, user_fpregs_struct_t *);
typedef int (*make_sigframe_t)(void *, struct rt_sigframe *, struct rt_sigframe *, k_rtsigset_t *);
struct infect_ctx {

2
compel/src/lib/infect.c
View file

@ -1300,7 +1300,7 @@ struct plain_regs_struct {
user_fpregs_struct_t fpregs;
};
static int save_regs_plain(void *to, user_regs_struct_t *r, user_fpregs_struct_t *f)
static int save_regs_plain(pid_t pid, void *to, user_regs_struct_t *r, user_fpregs_struct_t *f)
{
struct plain_regs_struct *prs = to;