Introduce isspace_ascii() for use by parsers

[apt.git] / apt-pkg / contrib / mmap.cc

diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 8e169027ef32a8d0c7128da76318faec72c09322..4dc851c1bee7aa23bf2cf31ecb5749c83a98e3d3 100644 (file)
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -16,7 +16,7 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
 #include <config.h>
 
 #include <apt-pkg/mmap.h>
@@ -38,7 +38,7 @@
 // ---------------------------------------------------------------------
 /* */
 MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
-                     Base(0), SyncToFd(NULL)
+                     Base(nullptr), SyncToFd(nullptr)
 {
    if ((Flags & NoImmMap) != NoImmMap)
       Map(F);
@@ -48,7 +48,7 @@ MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
 // ---------------------------------------------------------------------
 /* */
 MMap::MMap(unsigned long Flags) : Flags(Flags), iSize(0),
-                     Base(0), SyncToFd(NULL)
+                     Base(nullptr), SyncToFd(nullptr)
 {
 }
                                                                        /*}}}*/
@@ -84,6 +84,8 @@ bool MMap::Map(FileFd &Fd)
       if ((Flags & ReadOnly) != ReadOnly)
         return _error->Error("Compressed file %s can only be mapped readonly", Fd.Name().c_str());
       Base = malloc(iSize);
+      if (unlikely(Base == nullptr))
+        return _error->Errno("MMap-compressed-malloc", _("Couldn't make mmap of %llu bytes"), iSize);
       SyncToFd = new FileFd();
       if (Fd.Seek(0L) == false || Fd.Read(Base, iSize) == false)
         return _error->Error("Compressed file %s can't be read into mmap", Fd.Name().c_str());
@@ -92,7 +94,7 @@ bool MMap::Map(FileFd &Fd)
 
    // Map it.
    Base = (Flags & Fallback) ? MAP_FAILED : mmap(0,iSize,Prot,Map,Fd.Fd(),0);
-   if (Base == (void *)-1)
+   if (Base == MAP_FAILED)
    {
       if (errno == ENODEV || errno == EINVAL || (Flags & Fallback))
       {
@@ -102,6 +104,8 @@ bool MMap::Map(FileFd &Fd)
         {
            // for readonly, we don't need sync, so make it simple
            Base = malloc(iSize);
+           if (unlikely(Base == nullptr))
+              return _error->Errno("MMap-malloc", _("Couldn't make mmap of %llu bytes"), iSize);
            SyncToFd = new FileFd();
            return Fd.Read(Base, iSize);
         }
@@ -111,13 +115,14 @@ bool MMap::Map(FileFd &Fd)
            return _error->Errno("mmap", _("Couldn't duplicate file descriptor %i"), Fd.Fd());
 
         Base = calloc(iSize, 1);
+        if (unlikely(Base == nullptr))
+           return _error->Errno("MMap-calloc", _("Couldn't make mmap of %llu bytes"), 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 %llu bytes"),
-                             iSize);
+        return _error->Errno("MMap-mmap", _("Couldn't make mmap of %llu bytes"), iSize);
      }
 
    return true;