From 319790f4f86f595724fb2bd5aa6274d345469010 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Tue, 20 Mar 2012 19:23:32 +0100
Subject: * methods/rred.cc:   - check return of writev() as gcc recommends *
 methods/mirror.cc:   - check return of chdir() as gcc recommends *
 apt-pkg/deb/dpkgpm.cc:   - check return of write() a gcc recommends *
 apt-inst/deb/debfile.cc:   - check return of chdir() as gcc recommends *
 apt-inst/deb/dpkgdb.cc:   - check return of chdir() as gcc recommends

---
 apt-pkg/deb/dpkgpm.cc | 36 ++++++++++++++++++++++++++++--------
 1 file changed, 28 insertions(+), 8 deletions(-)

(limited to 'apt-pkg/deb')

diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index c46a81209..63c5a6380 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -163,6 +163,25 @@ pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
    return Ver;
 }
 									/*}}}*/
+ssize_t retry_write(int fd, const void *buf, size_t count)
+{
+   int Res;
+   ssize_t i = 0;
+   errno = 0;
+   do
+   {
+      Res = write(fd, buf, count);
+      if (Res < 0 && errno == EINTR)
+	 continue;
+      if (Res < 0)
+	 break;
+      buf = (char *)buf + Res;
+      count -= Res;
+      i += Res;
+   }
+   while (Res > 0 && count > 0);
+   return i;
+}
 
 // DPkgPM::pkgDPkgPM - Constructor					/*{{{*/
 // ---------------------------------------------------------------------
@@ -425,7 +444,7 @@ void pkgDPkgPM::DoStdin(int master)
    unsigned char input_buf[256] = {0,}; 
    ssize_t len = read(0, input_buf, sizeof(input_buf));
    if (len)
-      write(master, input_buf, len);
+      retry_write(master, input_buf, len);
    else
       d->stdin_is_dev_null = true;
 }
@@ -451,7 +470,7 @@ void pkgDPkgPM::DoTerminalPty(int master)
    }  
    if(len <= 0) 
       return;
-   write(1, term_buf, len);
+   retry_write(1, term_buf, len);
    if(d->term_out)
       fwrite(term_buf, len, sizeof(char), d->term_out);
 }
@@ -526,7 +545,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 	     << ":" << s
 	     << endl;
       if(OutStatusFd > 0)
-	 write(OutStatusFd, status.str().c_str(), status.str().size());
+	 retry_write(OutStatusFd, status.str().c_str(), status.str().size());
       if (Debug == true)
 	 std::clog << "send: '" << status.str() << "'" << endl;
 
@@ -550,7 +569,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 	     << ":" << list[3]
 	     << endl;
       if(OutStatusFd > 0)
-	 write(OutStatusFd, status.str().c_str(), status.str().size());
+	 retry_write(OutStatusFd, status.str().c_str(), status.str().size());
       if (Debug == true)
 	 std::clog << "send: '" << status.str() << "'" << endl;
       pkgFailures++;
@@ -564,7 +583,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 	     << ":" << list[3]
 	     << endl;
       if(OutStatusFd > 0)
-	 write(OutStatusFd, status.str().c_str(), status.str().size());
+	 retry_write(OutStatusFd, status.str().c_str(), status.str().size());
       if (Debug == true)
 	 std::clog << "send: '" << status.str() << "'" << endl;
       return;
@@ -592,7 +611,7 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 	     << ":" << s
 	     << endl;
       if(OutStatusFd > 0)
-	 write(OutStatusFd, status.str().c_str(), status.str().size());
+	 retry_write(OutStatusFd, status.str().c_str(), status.str().size());
       if (Debug == true)
 	 std::clog << "send: '" << status.str() << "'" << endl;
    }
@@ -1055,7 +1074,8 @@ bool pkgDPkgPM::Go(int OutStatusFd)
       }
 
       int fd[2];
-      pipe(fd);
+      if (pipe(fd) != 0)
+	 return _error->Errno("pipe","Failed to create IPC pipe to dpkg");
 
 #define ADDARG(X) Args.push_back(X); Size += strlen(X)
 #define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
@@ -1236,7 +1256,7 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 		<< (PackagesDone/float(PackagesTotal)*100.0) 
 		<< ":" << _("Running dpkg")
 		<< endl;
-	 write(OutStatusFd, status.str().c_str(), status.str().size());
+	 retry_write(OutStatusFd, status.str().c_str(), status.str().size());
       }
       Child = ExecFork();
             
-- 
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