Differential D20720 Diff 61837 sys/amd64/linux/linux_sysvec.c

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sys/amd64/linux/linux_sysvec.c

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static void linux_vdso_install(void *param);		static void linux_vdso_install(void *param);
static void linux_vdso_deinstall(void *param);		static void linux_vdso_deinstall(void *param);
static void linux_set_syscall_retval(struct thread *td, int error);		static void linux_set_syscall_retval(struct thread *td, int error);
static int linux_fetch_syscall_args(struct thread *td);		static int linux_fetch_syscall_args(struct thread *td);
static void linux_exec_setregs(struct thread td, struct image_params imgp,		static void linux_exec_setregs(struct thread td, struct image_params imgp,
u_long stack);		u_long stack);
static int linux_vsyscall(struct thread *td);		static int linux_vsyscall(struct thread *td);

		static int linux_exec_unbranded = 0;
		SYSCTL_INT(_compat_linux, OID_AUTO, exec_unbranded, CTLFLAG_RWTUN,
		&linux_exec_unbranded, 0, "Execute binaries which lack proper brand");

#define LINUX_T_UNKNOWN 255		#define LINUX_T_UNKNOWN 255
static int _bsd_to_linux_trapcode[] = {		static int _bsd_to_linux_trapcode[] = {
LINUX_T_UNKNOWN, /* 0 */		LINUX_T_UNKNOWN, /* 0 */
6, /* 1 T_PRIVINFLT */		6, /* 1 T_PRIVINFLT */
LINUX_T_UNKNOWN, /* 2 */		LINUX_T_UNKNOWN, /* 2 */
3, /* 3 T_BPTFLT */		3, /* 3 T_BPTFLT */
LINUX_T_UNKNOWN, /* 4 */		LINUX_T_UNKNOWN, /* 4 */
LINUX_T_UNKNOWN, /* 5 */		LINUX_T_UNKNOWN, /* 5 */
▲ Show 20 Lines • Show All 670 Lines • ▼ Show 20 Lines	linux_trans_osrel(const Elf_Note note, int32_t osrel)
* (version << 16) \| (major << 8) \| (minor)		* (version << 16) \| (major << 8) \| (minor)
* See macro in linux_mib.h		* See macro in linux_mib.h
*/		*/
*osrel = LINUX_KERNVER(desc[1], desc[2], desc[3]);		*osrel = LINUX_KERNVER(desc[1], desc[2], desc[3]);

return (true);		return (true);
}		}

		static boolean_t
		linux_nobrand_supported(struct image_params *imgp)
		{

		if (linux_exec_unbranded)
		return (TRUE);

		return (FALSE);
		}

static Elf_Brandnote linux64_brandnote = {		static Elf_Brandnote linux64_brandnote = {
.hdr.n_namesz = sizeof(GNULINUX_ABI_VENDOR),		.hdr.n_namesz = sizeof(GNULINUX_ABI_VENDOR),
.hdr.n_descsz = 16,		.hdr.n_descsz = 16,
.hdr.n_type = 1,		.hdr.n_type = 1,
.vendor = GNULINUX_ABI_VENDOR,		.vendor = GNULINUX_ABI_VENDOR,
.flags = BN_TRANSLATE_OSREL,		.flags = BN_TRANSLATE_OSREL,
.trans_osrel = linux_trans_osrel		.trans_osrel = linux_trans_osrel
};		};
Show All 29 Lines	static Elf64_Brandinfo linux_muslbrand = {
.emul_path = "/compat/linux",		.emul_path = "/compat/linux",
.interp_path = "/lib/ld-musl-x86_64.so.1",		.interp_path = "/lib/ld-musl-x86_64.so.1",
.sysvec = &elf_linux_sysvec,		.sysvec = &elf_linux_sysvec,
.interp_newpath = NULL,		.interp_newpath = NULL,
.brand_note = &linux64_brandnote,		.brand_note = &linux64_brandnote,
.flags = BI_CAN_EXEC_DYN \| BI_BRAND_NOTE		.flags = BI_CAN_EXEC_DYN \| BI_BRAND_NOTE
};		};

		static Elf64_Brandinfo linux_nobrand = {
		.brand = ELFOSABI_NONE,
		.machine = EM_X86_64,
		.compat_3_brand = NULL,
		.emul_path = "/compat/linux",
		.interp_path = NULL,
		.sysvec = &elf_linux_sysvec,
		.interp_newpath = NULL,
		.brand_note = NULL,
		.flags = BI_CAN_EXEC_DYN,
		.header_supported= linux_nobrand_supported
		};

Elf64_Brandinfo *linux_brandlist[] = {		Elf64_Brandinfo *linux_brandlist[] = {
&linux_glibc2brand,		&linux_glibc2brand,
&linux_glibc2brandshort,		&linux_glibc2brandshort,
&linux_muslbrand,		&linux_muslbrand,
		&linux_nobrand,
NULL		NULL
};		};

static int		static int
linux64_elf_modevent(module_t mod, int type, void *data)		linux64_elf_modevent(module_t mod, int type, void *data)
{		{
Elf64_Brandinfo **brandinfo;		Elf64_Brandinfo **brandinfo;
int error;		int error;
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