diff options
Diffstat (limited to 'apt-pkg/contrib/cdromutl.cc')
| -rw-r--r-- | apt-pkg/contrib/cdromutl.cc | 94 |
1 files changed, 56 insertions, 38 deletions
diff --git a/apt-pkg/contrib/cdromutl.cc b/apt-pkg/contrib/cdromutl.cc index afa01a562..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> @@ -42,13 +46,18 @@ bool IsMounted(string &Path) { if (Path.empty() == true) return false; - + // Need that trailing slash for directories if (Path[Path.length() - 1] != '/') Path += '/'; - - /* First we check if the path is actualy mounted, we do this by - stating the path and the previous directory (carefull of links!) + + // 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. */ struct stat Buf,Buf2; if (stat(Path.c_str(),&Buf) != 0 || @@ -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(); } /*}}}*/ |