68 static void *one_section64(struct vdso_elfinfo64 *e, const char *name,  in one_section64()  argument
75 	shdrs = (void *)e->hdr + e->hdr->e_shoff;  in one_section64()
76 	snames = (void *)e->hdr + shdrs[e->hdr->e_shstrndx].sh_offset;  in one_section64()
77 	for (i = 1; i < e->hdr->e_shnum; i++) {  in one_section64()
81 			return (void *)e->hdr + shdrs[i].sh_offset;  in one_section64()
89 	struct vdso_elfinfo64 *e = &_e->u.elf64;  in find_sections64()  local
91 	e->hdr = image->data;  in find_sections64()
92 	e->dynsym = one_section64(e, ".dynsym", &e->dynsymsize);  in find_sections64()
93 	e->dynstr = one_section64(e, ".dynstr", NULL);  in find_sections64()
95 	if (!e->dynsym || !e->dynstr) {  in find_sections64()
102 static Elf64_Sym *find_sym64(const struct vdso_elfinfo64 *e, const char *name)  in find_sym64()  argument
106 	for (i = 0; i < (e->dynsymsize / sizeof(Elf64_Sym)); i++) {  in find_sym64()
107 		Elf64_Sym *s = &e->dynsym[i];  in find_sym64()
110 		if (!strcmp(e->dynstr + s->st_name, name))  in find_sym64()
119 	struct vdso_elfinfo64 *e = &_e->u.elf64;  in patchsym64()  local
120 	Elf64_Sym *osym = find_sym64(e, orig);  in patchsym64()
121 	Elf64_Sym *nsym = find_sym64(e, new);  in patchsym64()
136 static void *one_section32(struct vdso_elfinfo32 *e, const char *name,  in one_section32()  argument
143 	shdrs = (void *)e->hdr + e->hdr->e_shoff;  in one_section32()
144 	snames = (void *)e->hdr + shdrs[e->hdr->e_shstrndx].sh_offset;  in one_section32()
145 	for (i = 1; i < e->hdr->e_shnum; i++) {  in one_section32()
149 			return (void *)e->hdr + shdrs[i].sh_offset;  in one_section32()
157 	struct vdso_elfinfo32 *e = &_e->u.elf32;  in find_sections32()  local
159 	e->hdr = image->data;  in find_sections32()
160 	e->dynsym = one_section32(e, ".dynsym", &e->dynsymsize);  in find_sections32()
161 	e->dynstr = one_section32(e, ".dynstr", NULL);  in find_sections32()
163 	if (!e->dynsym || !e->dynstr) {  in find_sections32()
170 static Elf32_Sym *find_sym32(const struct vdso_elfinfo32 *e, const char *name)  in find_sym32()  argument
174 	for (i = 0; i < (e->dynsymsize / sizeof(Elf32_Sym)); i++) {  in find_sym32()
175 		Elf32_Sym *s = &e->dynsym[i];  in find_sym32()
178 		if (!strcmp(e->dynstr + s->st_name, name))  in find_sym32()
187 	struct vdso_elfinfo32 *e = &_e->u.elf32;  in patchsym32()  local
188 	Elf32_Sym *osym = find_sym32(e, orig);  in patchsym32()
189 	Elf32_Sym *nsym = find_sym32(e, new);  in patchsym32()
204 static int find_sections(const struct vdso_image *image, struct vdso_elfinfo *e,  in find_sections()  argument
208 		return find_sections64(image, e);  in find_sections()
210 		return find_sections32(image, e);  in find_sections()
213 static int patch_one_symbol(struct vdso_elfinfo *e, const char *orig,  in patch_one_symbol()  argument
217 		return patchsym64(e, orig, new_target);  in patch_one_symbol()
219 		return patchsym32(e, orig, new_target);  in patch_one_symbol()
222 static int stick_patch(const struct vdso_image *image, struct vdso_elfinfo *e, bool elf64)  in stick_patch()  argument
226 	err = find_sections(image, e, elf64);  in stick_patch()
230 	err = patch_one_symbol(e,  in stick_patch()
236 	return patch_one_symbol(e,  in stick_patch()