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-rw-r--r--apt-pkg/contrib/cmndline.cc42
-rw-r--r--apt-pkg/contrib/cmndline.h1
-rw-r--r--apt-pkg/contrib/macros.h32
-rw-r--r--apt-pkg/contrib/mmap.cc70
-rw-r--r--apt-pkg/contrib/mmap.h5
5 files changed, 122 insertions, 28 deletions
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index bfd53695e..0b16bf51a 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -135,7 +135,9 @@ bool CommandLine::Parse(int argc,const char **argv)
for (; I != argc; I++)
*Files++ = argv[I];
*Files = 0;
-
+
+ SaveInConfig(argc, argv);
+
return true;
}
/*}}}*/
@@ -351,3 +353,41 @@ bool CommandLine::DispatchArg(Dispatch *Map,bool NoMatch)
return false;
}
/*}}}*/
+// CommandLine::SaveInConfig - for output later in a logfile or so /*{{{*/
+// ---------------------------------------------------------------------
+/* We save the commandline here to have it around later for e.g. logging.
+ It feels a bit like a hack here and isn't bulletproof, but it is better
+ than nothing after all. */
+void CommandLine::SaveInConfig(unsigned int const &argc, char const * const * const argv)
+{
+ char cmdline[300];
+ unsigned int length = 0;
+ bool lastWasOption = false;
+ bool closeQuote = false;
+ for (unsigned int i = 0; i < argc; ++i, ++length)
+ {
+ for (unsigned int j = 0; argv[i][j] != '\0' && length < sizeof(cmdline)-1; ++j, ++length)
+ {
+ cmdline[length] = argv[i][j];
+ if (lastWasOption == true && argv[i][j] == '=')
+ {
+ // That is possibly an option: Quote it if it includes spaces,
+ // the benefit is that this will eliminate also most false positives
+ const char* c = &argv[i][j+1];
+ for (; *c != '\0' && *c != ' '; ++c);
+ if (*c == '\0') continue;
+ cmdline[++length] = '"';
+ closeQuote = true;
+ }
+ }
+ if (closeQuote == true)
+ cmdline[length++] = '"';
+ // Problem: detects also --hello
+ if (cmdline[length-1] == 'o')
+ lastWasOption = true;
+ cmdline[length] = ' ';
+ }
+ cmdline[--length] = '\0';
+ _config->Set("CommandLine::AsString", cmdline);
+}
+ /*}}}*/
diff --git a/apt-pkg/contrib/cmndline.h b/apt-pkg/contrib/cmndline.h
index e28071e81..7c0c71aa7 100644
--- a/apt-pkg/contrib/cmndline.h
+++ b/apt-pkg/contrib/cmndline.h
@@ -60,6 +60,7 @@ class CommandLine
Configuration *Conf;
bool HandleOpt(int &I,int argc,const char *argv[],
const char *&Opt,Args *A,bool PreceedeMatch = false);
+ void static SaveInConfig(unsigned int const &argc, char const * const * const argv);
public:
diff --git a/apt-pkg/contrib/macros.h b/apt-pkg/contrib/macros.h
index 9aeb77b81..c39caf198 100644
--- a/apt-pkg/contrib/macros.h
+++ b/apt-pkg/contrib/macros.h
@@ -56,33 +56,33 @@
// some nice optional GNUC features
#if __GNUC__ >= 3
- #define __must_check __attribute__ ((warn_unused_result))
- #define __deprecated __attribute__ ((deprecated))
- /* likely() and unlikely() can be used to mark boolean expressions
- as (not) likely true which will help the compiler to optimise */
- #define likely(x) __builtin_expect (!!(x), 1)
- #define unlikely(x) __builtin_expect (!!(x), 0)
+ #define __must_check __attribute__ ((warn_unused_result))
+ #define __deprecated __attribute__ ((deprecated))
+ /* likely() and unlikely() can be used to mark boolean expressions
+ as (not) likely true which will help the compiler to optimise */
+ #define likely(x) __builtin_expect (!!(x), 1)
+ #define unlikely(x) __builtin_expect (!!(x), 0)
#else
- #define __must_check /* no warn_unused_result */
- #define __deprecated /* no deprecated */
- #define likely(x) (x)
- #define unlikely(x) (x)
+ #define __must_check /* no warn_unused_result */
+ #define __deprecated /* no deprecated */
+ #define likely(x) (x)
+ #define unlikely(x) (x)
#endif
// cold functions are unlikely() to be called
#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
- #define __cold __attribute__ ((__cold__))
+ #define __cold __attribute__ ((__cold__))
#else
- #define __cold /* no cold marker */
+ #define __cold /* no cold marker */
#endif
#ifdef __GNUG__
// Methods have a hidden this parameter that is visible to this attribute
- #define __like_printf_1 __attribute__ ((format (printf, 2, 3)))
- #define __like_printf_2 __attribute__ ((format (printf, 3, 4)))
+ #define __like_printf_1 __attribute__ ((format (printf, 2, 3)))
+ #define __like_printf_2 __attribute__ ((format (printf, 3, 4)))
#else
- #define __like_printf_1
- #define __like_printf_2
+ #define __like_printf_1 /* no like-printf */
+ #define __like_printf_2 /* no like-printf */
#endif
#endif
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index f440f9489..b3f29032c 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -27,6 +27,7 @@
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
+#include <errno.h>
#include <cstring>
/*}}}*/
@@ -35,7 +36,7 @@
// ---------------------------------------------------------------------
/* */
MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
- Base(0)
+ Base(0), SyncToFd(NULL)
{
if ((Flags & NoImmMap) != NoImmMap)
Map(F);
@@ -45,7 +46,7 @@ MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
// ---------------------------------------------------------------------
/* */
MMap::MMap(unsigned long Flags) : Flags(Flags), iSize(0),
- Base(0)
+ Base(0), SyncToFd(NULL)
{
}
/*}}}*/
@@ -78,7 +79,24 @@ bool MMap::Map(FileFd &Fd)
// Map it.
Base = mmap(0,iSize,Prot,Map,Fd.Fd(),0);
if (Base == (void *)-1)
- return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"),iSize);
+ {
+ if (errno == ENODEV || errno == EINVAL)
+ {
+ // The filesystem doesn't support this particular kind of mmap.
+ // So we allocate a buffer and read the whole file into it.
+ int const dupped_fd = dup(Fd.Fd());
+ if (dupped_fd == -1)
+ return _error->Errno("mmap", _("Couldn't duplicate file descriptor %i"), Fd.Fd());
+
+ Base = new unsigned char[iSize];
+ SyncToFd = new FileFd (dupped_fd);
+ if (!SyncToFd->Seek(0L) || !SyncToFd->Read(Base, iSize))
+ return false;
+ }
+ else
+ return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"),
+ iSize);
+ }
return true;
}
@@ -93,10 +111,19 @@ bool MMap::Close(bool DoSync)
if (DoSync == true)
Sync();
-
- if (munmap((char *)Base,iSize) != 0)
- _error->Warning("Unable to munmap");
-
+
+ if (SyncToFd != NULL)
+ {
+ delete[] (char *)Base;
+ delete SyncToFd;
+ SyncToFd = NULL;
+ }
+ else
+ {
+ if (munmap((char *)Base, iSize) != 0)
+ _error->WarningE("mmap", _("Unable to close mmap"));
+ }
+
iSize = 0;
Base = 0;
return true;
@@ -113,8 +140,18 @@ bool MMap::Sync()
#ifdef _POSIX_SYNCHRONIZED_IO
if ((Flags & ReadOnly) != ReadOnly)
- if (msync((char *)Base,iSize,MS_SYNC) < 0)
- return _error->Errno("msync","Unable to write mmap");
+ {
+ if (SyncToFd != NULL)
+ {
+ if (!SyncToFd->Seek(0) || !SyncToFd->Write(Base, iSize))
+ return false;
+ }
+ else
+ {
+ if (msync((char *)Base, iSize, MS_SYNC) < 0)
+ return _error->Errno("msync", _("Unable to synchronize mmap"));
+ }
+ }
#endif
return true;
}
@@ -130,8 +167,19 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
#ifdef _POSIX_SYNCHRONIZED_IO
unsigned long PSize = sysconf(_SC_PAGESIZE);
if ((Flags & ReadOnly) != ReadOnly)
- if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
- return _error->Errno("msync","Unable to write mmap");
+ {
+ if (SyncToFd != 0)
+ {
+ if (!SyncToFd->Seek(0) ||
+ !SyncToFd->Write (((char *)Base)+Start, Stop-Start))
+ return false;
+ }
+ else
+ {
+ if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
+ return _error->Errno("msync", _("Unable to synchronize mmap"));
+ }
+ }
#endif
return true;
}
diff --git a/apt-pkg/contrib/mmap.h b/apt-pkg/contrib/mmap.h
index cd2b15ba2..5ca951204 100644
--- a/apt-pkg/contrib/mmap.h
+++ b/apt-pkg/contrib/mmap.h
@@ -44,6 +44,11 @@ class MMap
unsigned long iSize;
void *Base;
+ // In case mmap can not be used, we keep a dup of the file
+ // descriptor that should have been mmaped so that we can write to
+ // the file in Sync().
+ FileFd *SyncToFd;
+
bool Map(FileFd &Fd);
bool Close(bool DoSync = true);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 15:20:12 +0000