summaryrefslogtreecommitdiff
path: root/apt-pkg/contrib/cdromutl.cc
diff options
context:
space:
mode:
Diffstat (limited to 'apt-pkg/contrib/cdromutl.cc')
-rw-r--r--apt-pkg/contrib/cdromutl.cc90
1 files changed, 54 insertions, 36 deletions
diff --git a/apt-pkg/contrib/cdromutl.cc b/apt-pkg/contrib/cdromutl.cc
index 20210ec0a..936e377fb 100644
--- a/apt-pkg/contrib/cdromutl.cc
+++ b/apt-pkg/contrib/cdromutl.cc
@@ -19,7 +19,11 @@
#include <apt-pkg/configuration.h>
#include <apt-pkg/strutl.h>
-#include <sys/wait.h>
+#include <stdlib.h>
+#include <string.h>
+#include <iostream>
+#include <string>
+#include <vector>
#include <sys/statvfs.h>
#include <dirent.h>
#include <fcntl.h>
@@ -42,11 +46,16 @@ bool IsMounted(string &Path)
{
if (Path.empty() == true)
return false;
-
+
// Need that trailing slash for directories
if (Path[Path.length() - 1] != '/')
Path += '/';
-
+
+ // if the path has a ".disk" directory we treat it as mounted
+ // this way even extracted copies of disks are recognized
+ if (DirectoryExists(Path + ".disk/") == true)
+ return true;
+
/* First we check if the path is actually mounted, we do this by
stating the path and the previous directory (careful of links!)
and comparing their device fields. */
@@ -66,7 +75,13 @@ bool IsMounted(string &Path)
leave /etc/mtab inconsitant. We drop all messages this produces. */
bool UnmountCdrom(string Path)
{
- if (IsMounted(Path) == false)
+ // do not generate errors, even if the mountpoint does not exist
+ // the mountpoint might be auto-created by the mount command
+ // and a non-existing mountpoint is surely not mounted
+ _error->PushToStack();
+ bool const mounted = IsMounted(Path);
+ _error->RevertToStack();
+ if (mounted == false)
return true;
for (int i=0;i<3;i++)
@@ -78,8 +93,9 @@ bool UnmountCdrom(string Path)
if (Child == 0)
{
// Make all the fds /dev/null
- for (int I = 0; I != 3; I++)
- dup2(open("/dev/null",O_RDWR),I);
+ int const null_fd = open("/dev/null",O_RDWR);
+ for (int I = 0; I != 3; ++I)
+ dup2(null_fd, I);
if (_config->Exists("Acquire::cdrom::"+Path+"::UMount") == true)
{
@@ -113,19 +129,24 @@ bool UnmountCdrom(string Path)
/* We fork mount and drop all messages */
bool MountCdrom(string Path, string DeviceName)
{
- if (IsMounted(Path) == true)
+ // do not generate errors, even if the mountpoint does not exist
+ // the mountpoint might be auto-created by the mount command
+ _error->PushToStack();
+ bool const mounted = IsMounted(Path);
+ _error->RevertToStack();
+ if (mounted == true)
return true;
-
+
int Child = ExecFork();
// The child
if (Child == 0)
{
// Make all the fds /dev/null
- int null_fd = open("/dev/null",O_RDWR);
- for (int I = 0; I != 3; I++)
+ int const null_fd = open("/dev/null",O_RDWR);
+ for (int I = 0; I != 3; ++I)
dup2(null_fd, I);
-
+
if (_config->Exists("Acquire::cdrom::"+Path+"::Mount") == true)
{
if (system(_config->Find("Acquire::cdrom::"+Path+"::Mount").c_str()) != 0)
@@ -242,37 +263,34 @@ bool IdentCdrom(string CD,string &Res,unsigned int Version)
return true;
}
/*}}}*/
-
// FindMountPointForDevice - Find mountpoint for the given device /*{{{*/
string FindMountPointForDevice(const char *devnode)
{
- char buf[255];
- char *out[10];
- int i=0;
-
// this is the order that mount uses as well
- const char *mount[] = { "/etc/mtab",
- "/proc/mount",
- NULL };
+ std::vector<std::string> const mounts = _config->FindVector("Dir::state::MountPoints", "/etc/mtab,/proc/mount");
- for (i=0; mount[i] != NULL; i++) {
- if (FileExists(mount[i])) {
- FILE *f=fopen(mount[i], "r");
- while ( fgets(buf, sizeof(buf), f) != NULL) {
- if (strncmp(buf, devnode, strlen(devnode)) == 0) {
- if(TokSplitString(' ', buf, out, 10))
- {
- fclose(f);
- // unescape the \0XXX chars in the path
- string mount_point = out[1];
- return DeEscapeString(mount_point);
- }
- }
- }
- fclose(f);
+ for (std::vector<std::string>::const_iterator m = mounts.begin(); m != mounts.end(); ++m)
+ if (FileExists(*m) == true)
+ {
+ char * line = NULL;
+ size_t line_len = 0;
+ FILE * f = fopen(m->c_str(), "r");
+ while(getline(&line, &line_len, f) != -1)
+ {
+ char * out[] = { NULL, NULL, NULL };
+ TokSplitString(' ', line, out, 3);
+ if (out[2] != NULL || out[1] == NULL || out[0] == NULL)
+ continue;
+ if (strcmp(out[0], devnode) != 0)
+ continue;
+ fclose(f);
+ // unescape the \0XXX chars in the path
+ string mount_point = out[1];
+ return DeEscapeString(mount_point);
+ }
+ fclose(f);
}
- }
-
+
return string();
}
/*}}}*/