Initial commit

This commit is contained in:
domenico
2025-06-24 15:51:28 +02:00
commit 22031d9dab
6862 changed files with 1462554 additions and 0 deletions

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@@ -0,0 +1,59 @@
From 4e0877a604bad684be020f68e96a05156131fd44 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 24 Jun 2018 17:05:31 +0200
Subject: [PATCH] sys/socket.h: fix SO_PEERSEC value on MIPS
Differing from all other archs supported by musl, MIPS defines SO_PEERSEC
to 30 instead of 31.
Reported-by: Andrey Jr. Mlenikov <temnota.am@gmail.com>
---
arch/mips/bits/socket.h | 2 ++
arch/mips64/bits/socket.h | 2 ++
arch/mipsn32/bits/socket.h | 2 ++
include/sys/socket.h | 3 +++
4 files changed, 9 insertions(+)
--- a/arch/mips/bits/socket.h
+++ b/arch/mips/bits/socket.h
@@ -48,5 +48,7 @@ struct cmsghdr {
#define SO_SNDBUFFORCE 31
#define SO_RCVBUFFORCE 33
+#define SO_PEERSEC 30
+
#define SOCK_NONBLOCK 0200
#define SOCK_CLOEXEC 02000000
--- a/arch/mips64/bits/socket.h
+++ b/arch/mips64/bits/socket.h
@@ -64,5 +64,7 @@ struct cmsghdr {
#define SO_SNDBUFFORCE 31
#define SO_RCVBUFFORCE 33
+#define SO_PEERSEC 30
+
#define SOCK_NONBLOCK 0200
#define SOCK_CLOEXEC 02000000
--- a/arch/mipsn32/bits/socket.h
+++ b/arch/mipsn32/bits/socket.h
@@ -48,5 +48,7 @@ struct cmsghdr {
#define SO_SNDBUFFORCE 31
#define SO_RCVBUFFORCE 33
+#define SO_PEERSEC 30
+
#define SOCK_NONBLOCK 0200
#define SOCK_CLOEXEC 02000000
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -201,7 +201,10 @@ struct linger {
#define SO_TIMESTAMP 29
#define SCM_TIMESTAMP SO_TIMESTAMP
+#ifndef SO_PEERSEC
#define SO_PEERSEC 31
+#endif
+
#define SO_PASSSEC 34
#define SO_TIMESTAMPNS 35
#define SCM_TIMESTAMPNS SO_TIMESTAMPNS

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@@ -0,0 +1,139 @@
>From a57cd35acf26ba6202ed6534a57f496464f431a1 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Sat, 10 Aug 2019 23:14:40 +0000
Subject: [PATCH] make relocation time symbol lookup and dlsym consistent
Using common code path for all symbol lookups fixes three dlsym issues:
- st_shndx of STT_TLS symbols were not checked and thus an undefined
tls symbol reference could be incorrectly treated as a definition
(the sysv hash lookup returns undefined symbols, gnu does not, so should
be rare in practice).
- symbol binding was not checked so a hidden symbol may be returned
(in principle STB_LOCAL symbols may appear in the dynamic symbol table
for hidden symbols, but linkers most likely don't produce it).
- mips specific behaviour was not applied (ARCH_SYM_REJECT_UND) so
undefined symbols may be returned on mips.
always_inline is used to avoid relocation performance regression, the
code generation for find_sym should not be affected.
BAckported to 1.1.19
---
ldso/dynlink.c | 84 +++++++++++++++++++-------------------------------
1 file changed, 31 insertions(+), 53 deletions(-)
--- a/ldso/dynlink.c
+++ b/ldso/dynlink.c
@@ -257,12 +257,16 @@ static Sym *gnu_lookup_filtered(uint32_t
#define ARCH_SYM_REJECT_UND(s) 0
#endif
-static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+#if defined(__GNUC__)
+__attribute__((always_inline))
+#endif
+static inline struct symdef find_sym2(struct dso *dso, const char *s, int need_def, int use_deps)
{
uint32_t h = 0, gh = gnu_hash(s), gho = gh / (8*sizeof(size_t)), *ght;
size_t ghm = 1ul << gh % (8*sizeof(size_t));
struct symdef def = {0};
- for (; dso; dso=dso->syms_next) {
+ struct dso **deps = use_deps ? dso->deps : 0;
+ for (; dso; dso=use_deps ? *deps++ : dso->syms_next) {
Sym *sym;
if ((ght = dso->ghashtab)) {
sym = gnu_lookup_filtered(gh, ght, dso, s, gho, ghm);
@@ -290,6 +294,11 @@ static struct symdef find_sym(struct dso
__attribute__((__visibility__("hidden")))
ptrdiff_t __tlsdesc_static(), __tlsdesc_dynamic();
+static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+{
+ return find_sym2(dso, s, need_def, 0);
+}
+
static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stride)
{
unsigned char *base = dso->base;
@@ -1872,58 +1881,27 @@ void *__tls_get_addr(tls_mod_off_t *);
static void *do_dlsym(struct dso *p, const char *s, void *ra)
{
- size_t i;
- uint32_t h = 0, gh = 0, *ght;
- Sym *sym;
- if (p == head || p == RTLD_DEFAULT || p == RTLD_NEXT) {
- if (p == RTLD_DEFAULT) {
- p = head;
- } else if (p == RTLD_NEXT) {
- p = addr2dso((size_t)ra);
- if (!p) p=head;
- p = p->next;
- }
- struct symdef def = find_sym(p, s, 0);
- if (!def.sym) goto failed;
- if ((def.sym->st_info&0xf) == STT_TLS)
- return __tls_get_addr((tls_mod_off_t []){def.dso->tls_id, def.sym->st_value});
- if (DL_FDPIC && (def.sym->st_info&0xf) == STT_FUNC)
- return def.dso->funcdescs + (def.sym - def.dso->syms);
- return laddr(def.dso, def.sym->st_value);
- }
- if (__dl_invalid_handle(p))
+ int use_deps = 0;
+ if (p == head || p == RTLD_DEFAULT) {
+ p = head;
+ } else if (p == RTLD_NEXT) {
+ p = addr2dso((size_t)ra);
+ if (!p) p=head;
+ p = p->next;
+ } else if (__dl_invalid_handle(p)) {
+ return 0;
+ } else
+ use_deps = 1;
+ struct symdef def = find_sym2(p, s, 0, use_deps);
+ if (!def.sym) {
+ error("Symbol not found: %s", s);
return 0;
- if ((ght = p->ghashtab)) {
- gh = gnu_hash(s);
- sym = gnu_lookup(gh, ght, p, s);
- } else {
- h = sysv_hash(s);
- sym = sysv_lookup(s, h, p);
}
- if (sym && (sym->st_info&0xf) == STT_TLS)
- return __tls_get_addr((tls_mod_off_t []){p->tls_id, sym->st_value});
- if (DL_FDPIC && sym && sym->st_shndx && (sym->st_info&0xf) == STT_FUNC)
- return p->funcdescs + (sym - p->syms);
- if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
- return laddr(p, sym->st_value);
- for (i=0; p->deps[i]; i++) {
- if ((ght = p->deps[i]->ghashtab)) {
- if (!gh) gh = gnu_hash(s);
- sym = gnu_lookup(gh, ght, p->deps[i], s);
- } else {
- if (!h) h = sysv_hash(s);
- sym = sysv_lookup(s, h, p->deps[i]);
- }
- if (sym && (sym->st_info&0xf) == STT_TLS)
- return __tls_get_addr((tls_mod_off_t []){p->deps[i]->tls_id, sym->st_value});
- if (DL_FDPIC && sym && sym->st_shndx && (sym->st_info&0xf) == STT_FUNC)
- return p->deps[i]->funcdescs + (sym - p->deps[i]->syms);
- if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
- return laddr(p->deps[i], sym->st_value);
- }
-failed:
- error("Symbol not found: %s", s);
- return 0;
+ if ((def.sym->st_info&0xf) == STT_TLS)
+ return __tls_get_addr((tls_mod_off_t []){def.dso->tls_id, def.sym->st_value-DTP_OFFSET});
+ if (DL_FDPIC && (def.sym->st_info&0xf) == STT_FUNC)
+ return def.dso->funcdescs + (def.sym - def.dso->syms);
+ return laddr(def.dso, def.sym->st_value);
}
int dladdr(const void *addr, Dl_info *info)

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@@ -0,0 +1,179 @@
From f3ed8bfe8a82af1870ddc8696ed4cc1d5aa6b441 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 5 Aug 2019 18:41:47 -0400
Subject: fix x87 stack imbalance in corner cases of i386 math asm
commit 31c5fb80b9eae86f801be4f46025bc6532a554c5 introduced underflow
code paths for the i386 math asm, along with checks on the fpu status
word to skip the underflow-generation instructions if the underflow
flag was already raised. unfortunately, at least one such path, in
log1p, returned with 2 items on the x87 stack rather than just 1 item
for the return value. this is a violation of the ABI's calling
convention, and could cause subsequent floating point code to produce
NANs due to x87 stack overflow. if floating point results are used in
flow control, this can lead to runaway wrong code execution.
rather than reviewing each "underflow already raised" code path for
correctness, remove them all. they're likely slower than just
performing the underflow code unconditionally, and significantly more
complex.
all of this code should be ripped out and replaced by C source files
with inline asm. doing so would preclude this kind of error by having
the compiler perform all x87 stack register allocation and stack
manipulation, and would produce comparable or better code. however
such a change is a much larger project.
---
src/math/i386/asin.s | 10 ++--------
src/math/i386/atan.s | 7 ++-----
src/math/i386/atan2.s | 5 +----
src/math/i386/atan2f.s | 5 +----
src/math/i386/atanf.s | 7 ++-----
src/math/i386/exp.s | 10 ++--------
src/math/i386/log1p.s | 7 ++-----
src/math/i386/log1pf.s | 7 ++-----
8 files changed, 14 insertions(+), 44 deletions(-)
--- a/src/math/i386/asin.s
+++ b/src/math/i386/asin.s
@@ -7,13 +7,10 @@ asinf:
cmp $0x01000000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 2f
fld %st(0)
fmul %st(1)
fstps 4(%esp)
-2: ret
+ ret
.global asinl
.type asinl,@function
@@ -30,11 +27,8 @@ asin:
cmp $0x00200000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 2f
fsts 4(%esp)
-2: ret
+ ret
1: fld %st(0)
fld1
fsub %st(0),%st(1)
--- a/src/math/i386/atan.s
+++ b/src/math/i386/atan.s
@@ -10,8 +10,5 @@ atan:
fpatan
ret
# subnormal x, return x with underflow
-1: fnstsw %ax
- and $16,%ax
- jnz 2f
- fsts 4(%esp)
-2: ret
+1: fsts 4(%esp)
+ ret
--- a/src/math/i386/atan2.s
+++ b/src/math/i386/atan2.s
@@ -10,8 +10,5 @@ atan2:
cmp $0x00200000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 1f
fsts 4(%esp)
-1: ret
+ ret
--- a/src/math/i386/atan2f.s
+++ b/src/math/i386/atan2f.s
@@ -10,10 +10,7 @@ atan2f:
cmp $0x01000000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 1f
fld %st(0)
fmul %st(1)
fstps 4(%esp)
-1: ret
+ ret
--- a/src/math/i386/atanf.s
+++ b/src/math/i386/atanf.s
@@ -10,10 +10,7 @@ atanf:
fpatan
ret
# subnormal x, return x with underflow
-1: fnstsw %ax
- and $16,%ax
- jnz 2f
- fld %st(0)
+1: fld %st(0)
fmul %st(1)
fstps 4(%esp)
-2: ret
+ ret
--- a/src/math/i386/exp.s
+++ b/src/math/i386/exp.s
@@ -7,13 +7,10 @@ expm1f:
cmp $0x01000000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 2f
fld %st(0)
fmul %st(1)
fstps 4(%esp)
-2: ret
+ ret
.global expm1l
.type expm1l,@function
@@ -30,11 +27,8 @@ expm1:
cmp $0x00200000,%eax
jae 1f
# subnormal x, return x with underflow
- fnstsw %ax
- and $16,%ax
- jnz 2f
fsts 4(%esp)
-2: ret
+ ret
1: fldl2e
fmulp
mov $0xc2820000,%eax
--- a/src/math/i386/log1p.s
+++ b/src/math/i386/log1p.s
@@ -16,9 +16,6 @@ log1p:
fyl2x
ret
# subnormal x, return x with underflow
-2: fnstsw %ax
- and $16,%ax
- jnz 1f
- fsts 4(%esp)
+2: fsts 4(%esp)
fstp %st(1)
-1: ret
+ ret
--- a/src/math/i386/log1pf.s
+++ b/src/math/i386/log1pf.s
@@ -16,10 +16,7 @@ log1pf:
fyl2x
ret
# subnormal x, return x with underflow
-2: fnstsw %ax
- and $16,%ax
- jnz 1f
- fxch
+2: fxch
fmul %st(1)
fstps 4(%esp)
-1: ret
+ ret

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@@ -0,0 +1,28 @@
From 6818c31c9bc4bbad5357f1de14bedf781e5b349e Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 5 Aug 2019 19:57:07 -0400
Subject: fix build regression in i386 asm for atan2, atan2f
commit f3ed8bfe8a82af1870ddc8696ed4cc1d5aa6b441 inadvertently removed
labels that were still needed.
---
src/math/i386/atan2.s | 2 +-
src/math/i386/atan2f.s | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/src/math/i386/atan2.s
+++ b/src/math/i386/atan2.s
@@ -11,4 +11,4 @@ atan2:
jae 1f
# subnormal x, return x with underflow
fsts 4(%esp)
- ret
+1: ret
--- a/src/math/i386/atan2f.s
+++ b/src/math/i386/atan2f.s
@@ -13,4 +13,4 @@ atan2f:
fld %st(0)
fmul %st(1)
fstps 4(%esp)
- ret
+1: ret

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@@ -0,0 +1,11 @@
--- a/include/glob.h
+++ b/include/glob.h
@@ -31,6 +31,8 @@ void globfree(glob_t *);
#define GLOB_NOESCAPE 0x40
#define GLOB_PERIOD 0x80
+#define GLOB_ONLYDIR 0x100
+
#define GLOB_NOSPACE 1
#define GLOB_ABORTED 2
#define GLOB_NOMATCH 3

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@@ -0,0 +1,28 @@
--- a/src/time/__tz.c
+++ b/src/time/__tz.c
@@ -23,6 +23,9 @@ static int r0[5], r1[5];
static const unsigned char *zi, *trans, *index, *types, *abbrevs, *abbrevs_end;
static size_t map_size;
+static const char *tzfile;
+static size_t tzfile_size;
+
static char old_tz_buf[32];
static char *old_tz = old_tz_buf;
static size_t old_tz_size = sizeof old_tz_buf;
@@ -125,6 +128,15 @@ static void do_tzset()
"/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
s = getenv("TZ");
+
+ /* if TZ is empty try to read it from /etc/TZ */
+ if (!s || !*s) {
+ if (tzfile)
+ __munmap((void*)tzfile, tzfile_size);
+
+ s = tzfile = (void *)__map_file("/etc/TZ", &tzfile_size);
+ }
+
if (!s) s = "/etc/localtime";
if (!*s) s = __utc;

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@@ -0,0 +1,50 @@
From 7ec87fbbc3cac99b4173d082dd6195f47c9a32e7 Mon Sep 17 00:00:00 2001
From: Steven Barth <steven@midlink.org>
Date: Mon, 22 Jun 2015 11:01:56 +0200
Subject: [PATCH] Add libssp_nonshared.a so GCC's is not needed
Signed-off-by: Steven Barth <steven@midlink.org>
---
Makefile | 10 ++++++++--
libssp_nonshared/__stack_chk_fail_local.c | 2 ++
2 files changed, 10 insertions(+), 2 deletions(-)
create mode 100644 libssp_nonshared/__stack_chk_fail_local.c
--- a/Makefile
+++ b/Makefile
@@ -66,7 +66,7 @@ CRT_LIBS = $(addprefix lib/,$(notdir $(C
STATIC_LIBS = lib/libc.a
SHARED_LIBS = lib/libc.so
TOOL_LIBS = lib/musl-gcc.specs
-ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
+ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS) lib/libssp_nonshared.a
ALL_TOOLS = obj/musl-gcc
WRAPCC_GCC = gcc
@@ -125,7 +125,8 @@ NOSSP_SRCS = $(wildcard crt/*.c) \
src/thread/__set_thread_area.c src/thread/$(ARCH)/__set_thread_area.c \
src/string/memset.c src/string/$(ARCH)/memset.c \
src/string/memcpy.c src/string/$(ARCH)/memcpy.c \
- ldso/dlstart.c ldso/dynlink.c
+ ldso/dlstart.c ldso/dynlink.c \
+ src/libssp_nonshared/__stack_chk_fail_local.c
$(NOSSP_SRCS:%.c=obj/%.o) $(NOSSP_SRCS:%.c=obj/%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
$(CRT_OBJS): CFLAGS_ALL += -DCRT
@@ -168,6 +169,11 @@ lib/libc.a: $(AOBJS)
$(AR) rc $@ $(AOBJS)
$(RANLIB) $@
+lib/libssp_nonshared.a: obj/src/libssp_nonshared/__stack_chk_fail_local.o
+ rm -f $@
+ $(AR) rc $@ $<
+ $(RANLIB) $@
+
$(EMPTY_LIBS):
rm -f $@
$(AR) rc $@
--- /dev/null
+++ b/src/libssp_nonshared/__stack_chk_fail_local.c
@@ -0,0 +1,2 @@
+#include "atomic.h"
+void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { a_crash(); }

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@@ -0,0 +1,11 @@
--- a/Makefile
+++ b/Makefile
@@ -217,7 +217,7 @@ $(DESTDIR)$(includedir)/%: $(srcdir)/inc
$(INSTALL) -D -m 644 $< $@
$(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
- $(INSTALL) -D -l $(libdir)/libc.so $@ || true
+ $(INSTALL) -D -l libc.so $@ || true
install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)

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@@ -0,0 +1,197 @@
From e6683d001a95d7c3d4d992496f00f77e01fcd268 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 22 Nov 2015 15:04:23 +0100
Subject: [PATCH v2] Add format attribute to some function declarations
GCC and Clang are able to check the format arguments given to a
function and warn the user if there is a error in the format arguments
or if there is a potential uncontrolled format string security problem
in the code. GCC does this automatically for some functions like
printf(), but it is also possible to annotate other functions in a way
that it will check them too. This feature is used by glibc for many
functions. This patch adds the attribute to the some functions of musl
expect for these functions where gcc automatically adds it.
GCC automatically adds checks for these functions: printf, fprintf,
sprintf, scanf, fscanf, sscanf, strftime, vprintf, vfprintf and
vsprintf.
The documentation from gcc is here:
https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
The documentation from Clang is here:
http://clang.llvm.org/docs/AttributeReference.html#format-gnu-format
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
include/err.h | 26 +++++++++++++++++---------
include/monetary.h | 12 ++++++++++--
include/stdio.h | 29 ++++++++++++++++++++---------
include/syslog.h | 12 ++++++++++--
4 files changed, 57 insertions(+), 22 deletions(-)
--- a/include/err.h
+++ b/include/err.h
@@ -8,15 +8,23 @@
extern "C" {
#endif
-void warn(const char *, ...);
-void vwarn(const char *, va_list);
-void warnx(const char *, ...);
-void vwarnx(const char *, va_list);
+#if __GNUC__ >= 3
+#define __fp(x, y) __attribute__ ((__format__ (__printf__, x, y)))
+#else
+#define __fp(x, y)
+#endif
+
+void warn(const char *, ...) __fp(1, 2);
+void vwarn(const char *, va_list) __fp(1, 0);
+void warnx(const char *, ...) __fp(1, 2);
+void vwarnx(const char *, va_list) __fp(1, 0);
+
+_Noreturn void err(int, const char *, ...) __fp(2, 3);
+_Noreturn void verr(int, const char *, va_list) __fp(2, 0);
+_Noreturn void errx(int, const char *, ...) __fp(2, 3);
+_Noreturn void verrx(int, const char *, va_list) __fp(2, 0);
-_Noreturn void err(int, const char *, ...);
-_Noreturn void verr(int, const char *, va_list);
-_Noreturn void errx(int, const char *, ...);
-_Noreturn void verrx(int, const char *, va_list);
+#undef __fp
#ifdef __cplusplus
}
--- a/include/monetary.h
+++ b/include/monetary.h
@@ -13,8 +13,16 @@ extern "C" {
#include <bits/alltypes.h>
-ssize_t strfmon(char *__restrict, size_t, const char *__restrict, ...);
-ssize_t strfmon_l(char *__restrict, size_t, locale_t, const char *__restrict, ...);
+#if __GNUC__ >= 3
+#define __fsfm(x, y) __attribute__ ((__format__ (__strfmon__, x, y)))
+#else
+#define __fsfm(x, y)
+#endif
+
+ssize_t strfmon(char *__restrict, size_t, const char *__restrict, ...) __fsfm(3, 4);
+ssize_t strfmon_l(char *__restrict, size_t, locale_t, const char *__restrict, ...) __fsfm(4, 5);
+
+#undef __fsfm
#ifdef __cplusplus
}
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -21,6 +21,14 @@ extern "C" {
#include <bits/alltypes.h>
+#if __GNUC__ >= 3
+#define __fp(x, y) __attribute__ ((__format__ (__printf__, x, y)))
+#define __fs(x, y) __attribute__ ((__format__ (__scanf__, x, y)))
+#else
+#define __fp(x, y)
+#define __fs(x, y)
+#endif
+
#ifdef __cplusplus
#define NULL 0L
#else
@@ -102,19 +110,19 @@ int puts(const char *);
int printf(const char *__restrict, ...);
int fprintf(FILE *__restrict, const char *__restrict, ...);
int sprintf(char *__restrict, const char *__restrict, ...);
-int snprintf(char *__restrict, size_t, const char *__restrict, ...);
+int snprintf(char *__restrict, size_t, const char *__restrict, ...) __fp(3, 4);
int vprintf(const char *__restrict, __isoc_va_list);
int vfprintf(FILE *__restrict, const char *__restrict, __isoc_va_list);
int vsprintf(char *__restrict, const char *__restrict, __isoc_va_list);
-int vsnprintf(char *__restrict, size_t, const char *__restrict, __isoc_va_list);
+int vsnprintf(char *__restrict, size_t, const char *__restrict, __isoc_va_list) __fp(3, 0);
int scanf(const char *__restrict, ...);
int fscanf(FILE *__restrict, const char *__restrict, ...);
int sscanf(const char *__restrict, const char *__restrict, ...);
-int vscanf(const char *__restrict, __isoc_va_list);
-int vfscanf(FILE *__restrict, const char *__restrict, __isoc_va_list);
-int vsscanf(const char *__restrict, const char *__restrict, __isoc_va_list);
+int vscanf(const char *__restrict, __isoc_va_list) __fs(1, 0);
+int vfscanf(FILE *__restrict, const char *__restrict, __isoc_va_list) __fs(2, 0);
+int vsscanf(const char *__restrict, const char *__restrict, __isoc_va_list) __fs(2, 0);
void perror(const char *);
@@ -135,8 +143,8 @@ int pclose(FILE *);
int fileno(FILE *);
int fseeko(FILE *, off_t, int);
off_t ftello(FILE *);
-int dprintf(int, const char *__restrict, ...);
-int vdprintf(int, const char *__restrict, __isoc_va_list);
+int dprintf(int, const char *__restrict, ...) __fp(2, 3);
+int vdprintf(int, const char *__restrict, __isoc_va_list) __fp(2, 0);
void flockfile(FILE *);
int ftrylockfile(FILE *);
void funlockfile(FILE *);
@@ -175,8 +183,8 @@ int fileno_unlocked(FILE *);
int getw(FILE *);
int putw(int, FILE *);
char *fgetln(FILE *, size_t *);
-int asprintf(char **, const char *, ...);
-int vasprintf(char **, const char *, __isoc_va_list);
+int asprintf(char **, const char *, ...) __fp(2, 3);
+int vasprintf(char **, const char *, __isoc_va_list) __fp(2, 0);
#endif
#ifdef _GNU_SOURCE
@@ -198,6 +206,9 @@ typedef struct _IO_cookie_io_functions_t
FILE *fopencookie(void *, const char *, cookie_io_functions_t);
#endif
+#undef __fp
+#undef __fs
+
#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
#define tmpfile64 tmpfile
#define fopen64 fopen
--- a/include/syslog.h
+++ b/include/syslog.h
@@ -56,16 +56,22 @@ extern "C" {
#define LOG_NOWAIT 0x10
#define LOG_PERROR 0x20
+#if __GNUC__ >= 3
+#define __fp(x, y) __attribute__ ((__format__ (__printf__, x, y)))
+#else
+#define __fp(x, y)
+#endif
+
void closelog (void);
void openlog (const char *, int, int);
int setlogmask (int);
-void syslog (int, const char *, ...);
+void syslog (int, const char *, ...) __fp(2, 3);
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define _PATH_LOG "/dev/log"
#define __NEED_va_list
#include <bits/alltypes.h>
-void vsyslog (int, const char *, va_list);
+void vsyslog (int, const char *, va_list) __fp(2, 0);
#if defined(SYSLOG_NAMES)
#define INTERNAL_NOPRI 0x10
#define INTERNAL_MARK (LOG_NFACILITIES<<3)
@@ -93,6 +99,8 @@ typedef struct {
#endif
#endif
+#undef __fp
+
#ifdef __cplusplus
}
#endif

View File

@@ -0,0 +1,69 @@
From e01b5939b38aea5ecbe41670643199825874b26c Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 21 May 2020 23:32:45 -0400
Subject: [PATCH 2/4] don't use libc.threads_minus_1 as relaxed atomic for
skipping locks
after all but the last thread exits, the next thread to observe
libc.threads_minus_1==0 and conclude that it can skip locking fails to
synchronize with any changes to memory that were made by the
last-exiting thread. this can produce data races.
on some archs, at least x86, memory synchronization is unlikely to be
a problem; however, with the inline locks in malloc, skipping the lock
also eliminated the compiler barrier, and caused code that needed to
re-check chunk in-use bits after obtaining the lock to reuse a stale
value, possibly from before the process became single-threaded. this
in turn produced corruption of the heap state.
some uses of libc.threads_minus_1 remain, especially for allocation of
new TLS in the dynamic linker; otherwise, it could be removed
entirely. it's made non-volatile to reflect that the remaining
accesses are only made under lock on the thread list.
instead of libc.threads_minus_1, libc.threaded is now used for
skipping locks. the difference is that libc.threaded is permanently
true once an additional thread has been created. this will produce
some performance regression in processes that are mostly
single-threaded but occasionally creating threads. in the future it
may be possible to bring back the full lock-skipping, but more care
needs to be taken to produce a safe design.
---
src/internal/libc.h | 2 +-
src/malloc/malloc.c | 2 +-
src/thread/__lock.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -21,7 +21,7 @@ struct __libc {
int can_do_threads;
int threaded;
int secure;
- volatile int threads_minus_1;
+ int threads_minus_1;
size_t *auxv;
struct tls_module *tls_head;
size_t tls_size, tls_align, tls_cnt;
--- a/src/malloc/malloc.c
+++ b/src/malloc/malloc.c
@@ -60,7 +60,7 @@ static struct {
static inline void lock(volatile int *lk)
{
- if (libc.threads_minus_1)
+ if (libc.threaded)
while(a_swap(lk, 1)) __wait(lk, lk+1, 1, 1);
}
--- a/src/thread/__lock.c
+++ b/src/thread/__lock.c
@@ -18,7 +18,7 @@
void __lock(volatile int *l)
{
- if (!libc.threads_minus_1) return;
+ if (!libc.threaded) return;
/* fast path: INT_MIN for the lock, +1 for the congestion */
int current = a_cas(l, 0, INT_MIN + 1);
if (!current) return;

View File

@@ -0,0 +1,100 @@
--- a/src/locale/iconv.c
+++ b/src/locale/iconv.c
@@ -48,6 +48,7 @@ static const unsigned char charmaps[] =
"utf16\0\0\312"
"ucs4\0utf32\0\0\313"
"ucs2\0\0\314"
+#ifdef FULL_ICONV
"eucjp\0\0\320"
"shiftjis\0sjis\0\0\321"
"iso2022jp\0\0\322"
@@ -56,6 +57,7 @@ static const unsigned char charmaps[] =
"gb2312\0\0\332"
"big5\0bigfive\0cp950\0big5hkscs\0\0\340"
"euckr\0ksc5601\0ksx1001\0cp949\0\0\350"
+#endif
#include "codepages.h"
;
@@ -66,6 +68,7 @@ static const unsigned short legacy_chars
#include "legacychars.h"
};
+#ifdef FULL_ICONV
static const unsigned short jis0208[84][94] = {
#include "jis0208.h"
};
@@ -85,6 +88,7 @@ static const unsigned short hkscs[] = {
static const unsigned short ksc[93][94] = {
#include "ksc.h"
};
+#endif
static const unsigned short rev_jis[] = {
#include "revjis.h"
@@ -205,6 +209,7 @@ static unsigned legacy_map(const unsigne
return x < 256 ? x : legacy_chars[x-256];
}
+#ifdef FULL_ICONV
static unsigned uni_to_jis(unsigned c)
{
unsigned nel = sizeof rev_jis / sizeof *rev_jis;
@@ -223,6 +228,7 @@ static unsigned uni_to_jis(unsigned c)
}
}
}
+#endif
size_t iconv(iconv_t cd, char **restrict in, size_t *restrict inb, char **restrict out, size_t *restrict outb)
{
@@ -319,6 +325,7 @@ size_t iconv(iconv_t cd, char **restrict
}
type = scd->state;
continue;
+#ifdef FULL_ICONV
case SHIFT_JIS:
if (c < 128) break;
if (c-0xa1 <= 0xdf-0xa1) {
@@ -510,6 +517,7 @@ size_t iconv(iconv_t cd, char **restrict
c = ksc[c][d];
if (!c) goto ilseq;
break;
+#endif
default:
if (!c) break;
c = legacy_map(map, c);
@@ -550,6 +558,7 @@ size_t iconv(iconv_t cd, char **restrict
}
}
goto subst;
+#ifdef FULL_ICONV
case SHIFT_JIS:
if (c < 128) goto revout;
if (c == 0xa5) {
@@ -623,6 +632,7 @@ size_t iconv(iconv_t cd, char **restrict
*(*out)++ = 'B';
*outb -= 8;
break;
+#endif
case UCS2:
totype = UCS2BE;
case UCS2BE:
--- a/src/locale/codepages.h
+++ b/src/locale/codepages.h
@@ -129,6 +129,7 @@
"\340\204\43\316\100\344\34\144\316\71\350\244\243\316\72\354\264\343\316\73"
"\21\361\44\317\74\364\30\145\17\124\146\345\243\317\76\374\134\304\327\77"
+#ifdef FULL_ICONV
"cp1250\0"
"windows1250\0"
"\0\40"
@@ -239,6 +240,7 @@
"\20\105\163\330\64\324\324\145\315\65\330\144\243\315\66\334\334\145\330\67"
"\340\204\43\316\100\344\224\143\316\71\350\244\243\316\72\205\265\343\316\73"
"\21\305\203\330\74\364\330\145\317\75\370\344\243\317\76\374\340\65\362\77"
+#endif
"koi8r\0"
"\0\40"

View File

@@ -0,0 +1,60 @@
--- a/src/crypt/crypt_r.c
+++ b/src/crypt/crypt_r.c
@@ -19,12 +19,6 @@ char *__crypt_r(const char *key, const c
if (salt[0] == '$' && salt[1] && salt[2]) {
if (salt[1] == '1' && salt[2] == '$')
return __crypt_md5(key, salt, output);
- if (salt[1] == '2' && salt[3] == '$')
- return __crypt_blowfish(key, salt, output);
- if (salt[1] == '5' && salt[2] == '$')
- return __crypt_sha256(key, salt, output);
- if (salt[1] == '6' && salt[2] == '$')
- return __crypt_sha512(key, salt, output);
}
return __crypt_des(key, salt, output);
}
--- a/src/crypt/crypt_sha512.c
+++ b/src/crypt/crypt_sha512.c
@@ -12,6 +12,7 @@
#include <stdio.h>
#include <string.h>
#include <stdint.h>
+#if 0
/* public domain sha512 implementation based on fips180-3 */
/* >=2^64 bits messages are not supported (about 2000 peta bytes) */
@@ -369,3 +370,4 @@ char *__crypt_sha512(const char *key, co
return "*";
return p;
}
+#endif
--- a/src/crypt/crypt_blowfish.c
+++ b/src/crypt/crypt_blowfish.c
@@ -50,6 +50,7 @@
#include <string.h>
#include <stdint.h>
+#if 0
typedef uint32_t BF_word;
typedef int32_t BF_word_signed;
@@ -796,3 +797,4 @@ char *__crypt_blowfish(const char *key,
return "*";
}
+#endif
--- a/src/crypt/crypt_sha256.c
+++ b/src/crypt/crypt_sha256.c
@@ -13,6 +13,7 @@
#include <string.h>
#include <stdint.h>
+#if 0
/* public domain sha256 implementation based on fips180-3 */
struct sha256 {
@@ -320,3 +321,4 @@ char *__crypt_sha256(const char *key, co
return "*";
return p;
}
+#endif