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fakeroot/SOURCES/compile-time64-wraps-with-D...

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From 5af3efd9f2987dd3a687941d12bb08322e8d19ec Mon Sep 17 00:00:00 2001
From: Shengjing Zhu <shengjing.zhu@canonical.com>
Date: Wed, 1 Mar 2023 15:40:13 +0800
Subject: [PATCH] Compile time64 wraps with -D_TIME_BITS=64
This ensures using right stat struct on 32bit architectures.
Closes: #1030638
---
Makefile.am | 13 ++-
libfakeroot.c | 74 -------------
libfakeroot_time64.c | 255 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 263 insertions(+), 79 deletions(-)
create mode 100644 libfakeroot_time64.c
diff --git a/Makefile.am b/Makefile.am
index 76210b5..4c1dfb1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,20 +2,23 @@ AUTOMAKE_OPTIONS=foreign
ACLOCAL_AMFLAGS = -I build-aux
SUBDIRS=doc scripts test
-noinst_LTLIBRARIES = libcommunicate.la libmacosx.la
+noinst_LTLIBRARIES = libcommunicate.la libmacosx.la libfakeroot_time64.la
libcommunicate_la_SOURCES = communicate.c
libmacosx_la_SOURCES = libfakeroot_inode64.c libfakeroot_unix2003.c patchattr.h
+libfakeroot_time64_la_SOURCES = libfakeroot_time64.c
+libfakeroot_time64_la_CPPFLAGS = -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64
+
lib_LTLIBRARIES=libfakeroot.la
libfakeroot_la_SOURCES=libfakeroot.c statconv/glibc/linux/alpha/stats.h wrapdef.h wrapstruct.h communicate.h
libfakeroot_la_LDFLAGS=-release 0
if MACOSX
-libfakeroot_la_DEPENDENCIES=wrapdef.h wrapstruct.h libcommunicate.la libmacosx.la $(LTLIBOBJS)
-libfakeroot_la_LIBADD = libcommunicate.la libmacosx.la $(LTLIBOBJS)
+libfakeroot_la_DEPENDENCIES=wrapdef.h wrapstruct.h libfakeroot_time64.la libcommunicate.la libmacosx.la $(LTLIBOBJS)
+libfakeroot_la_LIBADD = libfakeroot_time64.la libcommunicate.la libmacosx.la $(LTLIBOBJS)
else !MACOSX
-libfakeroot_la_DEPENDENCIES=wrapdef.h wrapstruct.h libcommunicate.la $(LTLIBOBJS)
-libfakeroot_la_LIBADD = libcommunicate.la $(LTLIBOBJS)
+libfakeroot_la_DEPENDENCIES=wrapdef.h wrapstruct.h libfakeroot_time64.la libcommunicate.la $(LTLIBOBJS)
+libfakeroot_la_LIBADD = libfakeroot_time64.la libcommunicate.la $(LTLIBOBJS)
endif !MACOSX
bin_PROGRAMS=faked
diff --git a/libfakeroot.c b/libfakeroot.c
index 26a3e90..587a472 100644
--- a/libfakeroot.c
+++ b/libfakeroot.c
@@ -2631,77 +2631,3 @@ int sysinfo(int command, char *buf, long count)
}
}
#endif
-
-#ifdef TIME64_HACK
-int WRAP_LSTAT64_TIME64 LSTAT64_TIME64_ARG(int ver,
- const char *file_name,
- struct stat64 *statbuf){
-
- int r;
-
-#ifdef LIBFAKEROOT_DEBUGGING
- if (fakeroot_debug) {
- fprintf(stderr, "lstat[time64] file_name %s\n", file_name);
- }
-#endif /* LIBFAKEROOT_DEBUGGING */
- r=NEXT_LSTAT64_TIME64(ver, file_name, statbuf);
- if(r)
- return -1;
- SEND_GET_STAT64(statbuf, ver);
- return 0;
-}
-
-
-int WRAP_STAT64_TIME64 STAT64_TIME64_ARG(int ver,
- const char *file_name,
- struct stat64 *st){
- int r;
-
-#ifdef LIBFAKEROOT_DEBUGGING
- if (fakeroot_debug) {
- fprintf(stderr, "stat64[time64] file_name %s\n", file_name);
- }
-#endif /* LIBFAKEROOT_DEBUGGING */
- r=NEXT_STAT64_TIME64(ver, file_name, st);
- if(r)
- return -1;
- SEND_GET_STAT64(st,ver);
- return 0;
-}
-
-
-int WRAP_FSTAT64_TIME64 FSTAT64_TIME64_ARG(int ver,
- int fd,
- struct stat64 *st){
-
- int r;
-
-#ifdef LIBFAKEROOT_DEBUGGING
- if (fakeroot_debug) {
- fprintf(stderr, "fstat64[time64] fd %d\n", fd);
- }
-#endif /* LIBFAKEROOT_DEBUGGING */
- r=NEXT_FSTAT64_TIME64(ver, fd, st);
- if(r)
- return -1;
- SEND_GET_STAT64(st,ver);
- return 0;
-}
-
-int WRAP_FSTATAT64_TIME64 FSTATAT64_TIME64_ARG(int ver,
- int dir_fd,
- const char *path,
- struct stat64 *st,
- int flags){
-
-
- int r;
-
- r=NEXT_FSTATAT64_TIME64(ver, dir_fd, path, st, flags);
- if(r)
- return -1;
- SEND_GET_STAT64(st,ver);
- return 0;
-}
-
-#endif /* TIME64_HACK */
diff --git a/libfakeroot_time64.c b/libfakeroot_time64.c
new file mode 100644
index 0000000..5b93a84
--- /dev/null
+++ b/libfakeroot_time64.c
@@ -0,0 +1,255 @@
+#include "config.h"
+#include "communicate.h"
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_ACL_H
+#include <sys/acl.h>
+#endif /* HAVE_SYS_ACL_H */
+#ifdef HAVE_SYS_CAPABILITY_H
+#include <sys/capability.h>
+#endif
+#if HAVE_FTS_H
+#include <fts.h>
+#endif /* HAVE_FTS_H */
+#ifdef HAVE_SYS_SYSMACROS_H
+# include <sys/sysmacros.h>
+#endif
+
+#include "wrapped.h"
+
+extern void load_library_symbols(void);
+
+#ifdef LIBFAKEROOT_DEBUGGING
+extern int fakeroot_debug;
+#endif /* LIBFAKEROOT_DEBUGGING */
+
+
+extern void send_get_fakem(struct fake_msg *buf);
+
+#ifdef TIME64_HACK
+
+#ifdef STUPID_ALPHA_HACK
+#define SEND_GET_STAT64_TIME64(a,b) send_get_stat64_time64(a,b)
+#else
+#define SEND_GET_STAT64_TIME64(a,b) send_get_stat64_time64(a)
+#endif
+
+void cpyfakemstat64_time64(struct fake_msg *f,
+ const struct stat64 *st
+#ifdef STUPID_ALPHA_HACK
+ , int ver
+#endif
+ ){
+#ifndef STUPID_ALPHA_HACK
+ f->st.mode =st->st_mode;
+ f->st.ino =st->st_ino ;
+ f->st.uid =st->st_uid ;
+ f->st.gid =st->st_gid ;
+ f->st.dev =st->st_dev ;
+ f->st.rdev =st->st_rdev;
+
+ /* DO copy the nlink count. Although the system knows this
+ one better, we need it for unlink().
+ This actually opens up a race condition, if another command
+ makes a hardlink on a file, while we try to unlink it. This
+ may cause the record to be deleted, while the link continues
+ to live on the disk. But the chance is small, and unlikely
+ to occur in practical fakeroot conditions. */
+
+ f->st.nlink=st->st_nlink;
+#else
+ switch(ver) {
+ case _STAT_VER_KERNEL:
+ f->st.mode = ((struct fakeroot_kernel_stat *)st)->st_mode;
+ f->st.ino = ((struct fakeroot_kernel_stat *)st)->st_ino;
+ f->st.uid = ((struct fakeroot_kernel_stat *)st)->st_uid;
+ f->st.gid = ((struct fakeroot_kernel_stat *)st)->st_gid;
+ f->st.dev = ((struct fakeroot_kernel_stat *)st)->st_dev;
+ f->st.rdev = ((struct fakeroot_kernel_stat *)st)->st_rdev;
+ f->st.nlink = ((struct fakeroot_kernel_stat *)st)->st_nlink;
+ break;
+ case _STAT_VER_GLIBC2:
+ f->st.mode = ((struct fakeroot_glibc2_stat *)st)->st_mode;
+ f->st.ino = ((struct fakeroot_glibc2_stat *)st)->st_ino;
+ f->st.uid = ((struct fakeroot_glibc2_stat *)st)->st_uid;
+ f->st.gid = ((struct fakeroot_glibc2_stat *)st)->st_gid;
+ f->st.dev = ((struct fakeroot_glibc2_stat *)st)->st_dev;
+ f->st.rdev = ((struct fakeroot_glibc2_stat *)st)->st_rdev;
+ f->st.nlink = ((struct fakeroot_glibc2_stat *)st)->st_nlink;
+ break;
+ case _STAT_VER_GLIBC2_1:
+ f->st.mode = ((struct fakeroot_glibc21_stat *)st)->st_mode;
+ f->st.ino = ((struct fakeroot_glibc21_stat *)st)->st_ino;
+ f->st.uid = ((struct fakeroot_glibc21_stat *)st)->st_uid;
+ f->st.gid = ((struct fakeroot_glibc21_stat *)st)->st_gid;
+ f->st.dev = ((struct fakeroot_glibc21_stat *)st)->st_dev;
+ f->st.rdev = ((struct fakeroot_glibc21_stat *)st)->st_rdev;
+ f->st.nlink = ((struct fakeroot_glibc21_stat *)st)->st_nlink;
+ break;
+ default:
+ f->st.mode = st->st_mode;
+ f->st.ino = st->st_ino;
+ f->st.uid = st->st_uid;
+ f->st.gid = st->st_gid;
+ f->st.dev = st->st_dev;
+ f->st.rdev = st->st_rdev;
+ f->st.nlink = st->st_nlink;
+ break;
+ }
+#endif
+}
+void cpystat64fakem_time64(struct stat64 *st,
+ const struct fake_msg *f
+#ifdef STUPID_ALPHA_HACK
+ , int ver
+#endif
+ ){
+#ifndef STUPID_ALPHA_HACK
+ st->st_mode =f->st.mode;
+ st->st_ino =f->st.ino ;
+ st->st_uid =f->st.uid ;
+ st->st_gid =f->st.gid ;
+ st->st_dev =f->st.dev ;
+ st->st_rdev =f->st.rdev;
+ /* DON'T copy the nlink count! The system always knows
+ this one better! */
+ /* st->st_nlink=f->st.nlink;*/
+#else
+ switch(ver) {
+ case _STAT_VER_KERNEL:
+ ((struct fakeroot_kernel_stat *)st)->st_mode = f->st.mode;
+ ((struct fakeroot_kernel_stat *)st)->st_ino = f->st.ino;
+ ((struct fakeroot_kernel_stat *)st)->st_uid = f->st.uid;
+ ((struct fakeroot_kernel_stat *)st)->st_gid = f->st.gid;
+ ((struct fakeroot_kernel_stat *)st)->st_dev = f->st.dev;
+ ((struct fakeroot_kernel_stat *)st)->st_rdev = f->st.rdev;
+ break;
+ case _STAT_VER_GLIBC2:
+ ((struct fakeroot_glibc2_stat *)st)->st_mode = f->st.mode;
+ ((struct fakeroot_glibc2_stat *)st)->st_ino = f->st.ino;
+ ((struct fakeroot_glibc2_stat *)st)->st_uid = f->st.uid;
+ ((struct fakeroot_glibc2_stat *)st)->st_gid = f->st.gid;
+ ((struct fakeroot_glibc2_stat *)st)->st_dev = f->st.dev;
+ ((struct fakeroot_glibc2_stat *)st)->st_rdev = f->st.rdev;
+ break;
+ case _STAT_VER_GLIBC2_1:
+ ((struct fakeroot_glibc21_stat *)st)->st_mode = f->st.mode;
+ ((struct fakeroot_glibc21_stat *)st)->st_ino = f->st.ino;
+ ((struct fakeroot_glibc21_stat *)st)->st_uid = f->st.uid;
+ ((struct fakeroot_glibc21_stat *)st)->st_gid = f->st.gid;
+ ((struct fakeroot_glibc21_stat *)st)->st_dev = f->st.dev;
+ ((struct fakeroot_glibc21_stat *)st)->st_rdev = f->st.rdev;
+ break;
+ default:
+ st->st_mode =f->st.mode;
+ st->st_ino =f->st.ino ;
+ st->st_uid =f->st.uid ;
+ st->st_gid =f->st.gid ;
+ st->st_dev =f->st.dev ;
+ st->st_rdev =f->st.rdev;
+ break;
+ }
+#endif
+}
+
+void send_get_stat64_time64(struct stat64 *st
+#ifdef STUPID_ALPHA_HACK
+ , int ver
+#endif
+ )
+{
+ struct fake_msg buf;
+
+#ifndef FAKEROOT_FAKENET
+ if(init_get_msg()!=-1)
+#endif /* ! FAKEROOT_FAKENET */
+ {
+#ifndef STUPID_ALPHA_HACK
+ cpyfakemstat64_time64(&buf,st);
+#else
+ cpyfakemstat64_time64(&buf,st,ver);
+#endif
+
+ buf.id=stat_func;
+ send_get_fakem(&buf);
+#ifndef STUPID_ALPHA_HACK
+ cpystat64fakem_time64(st,&buf);
+#else
+ cpystat64fakem_time64(st,&buf,ver);
+#endif
+ }
+}
+
+int WRAP_LSTAT64_TIME64 LSTAT64_TIME64_ARG(int ver,
+ const char *file_name,
+ struct stat64 *statbuf){
+
+ int r;
+
+#ifdef LIBFAKEROOT_DEBUGGING
+ if (fakeroot_debug) {
+ fprintf(stderr, "lstat[time64] file_name %s\n", file_name);
+ }
+#endif /* LIBFAKEROOT_DEBUGGING */
+ r=NEXT_LSTAT64_TIME64(ver, file_name, statbuf);
+ if(r)
+ return -1;
+ SEND_GET_STAT64_TIME64(statbuf, ver);
+ return 0;
+}
+
+
+int WRAP_STAT64_TIME64 STAT64_TIME64_ARG(int ver,
+ const char *file_name,
+ struct stat64 *st){
+ int r;
+
+#ifdef LIBFAKEROOT_DEBUGGING
+ if (fakeroot_debug) {
+ fprintf(stderr, "stat64[time64] file_name %s\n", file_name);
+ }
+#endif /* LIBFAKEROOT_DEBUGGING */
+ r=NEXT_STAT64_TIME64(ver, file_name, st);
+ if(r)
+ return -1;
+ SEND_GET_STAT64_TIME64(st,ver);
+ return 0;
+}
+
+
+int WRAP_FSTAT64_TIME64 FSTAT64_TIME64_ARG(int ver,
+ int fd,
+ struct stat64 *st){
+
+ int r;
+
+#ifdef LIBFAKEROOT_DEBUGGING
+ if (fakeroot_debug) {
+ fprintf(stderr, "fstat64[time64] fd %d\n", fd);
+ }
+#endif /* LIBFAKEROOT_DEBUGGING */
+ r=NEXT_FSTAT64_TIME64(ver, fd, st);
+ if(r)
+ return -1;
+ SEND_GET_STAT64_TIME64(st,ver);
+ return 0;
+}
+
+int WRAP_FSTATAT64_TIME64 FSTATAT64_TIME64_ARG(int ver,
+ int dir_fd,
+ const char *path,
+ struct stat64 *st,
+ int flags){
+
+
+ int r;
+
+ r=NEXT_FSTATAT64_TIME64(ver, dir_fd, path, st, flags);
+ if(r)
+ return -1;
+ SEND_GET_STAT64_TIME64(st,ver);
+ return 0;
+}
+
+#endif /* TIME64_HACK */
--
2.39.2