X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/f39daeb1f66b8910f91274055bf07c3d008cdc50..fce9f472046344d15d4f4df281a003d837cf4177:/apt-pkg/contrib/fileutl.cc diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 0f88923cf..7fbe4d604 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -41,6 +41,8 @@ #include #include #include +#include + #include #include @@ -244,17 +246,20 @@ int GetLock(string File,bool Errors) fl.l_len = 0; if (fcntl(FD,F_SETLK,&fl) == -1) { + // always close to not leak resources + int Tmp = errno; + close(FD); + errno = Tmp; + if (errno == ENOLCK) { _error->Warning(_("Not using locking for nfs mounted lock file %s"),File.c_str()); return dup(0); // Need something for the caller to close - } + } + if (Errors == true) _error->Errno("open",_("Could not get lock %s"),File.c_str()); - int Tmp = errno; - close(FD); - errno = Tmp; return -1; } @@ -651,9 +656,9 @@ string flNoLink(string File) while (1) { // Read the link - int Res; + ssize_t Res; if ((Res = readlink(NFile.c_str(),Buffer,sizeof(Buffer))) <= 0 || - (unsigned)Res >= sizeof(Buffer)) + (size_t)Res >= sizeof(Buffer)) return File; // Append or replace the previous path @@ -755,12 +760,42 @@ bool WaitFd(int Fd,bool write,unsigned long timeout) return true; } /*}}}*/ +// MergeKeepFdsFromConfiguration - Merge APT::Keep-Fds configuration /*{{{*/ +// --------------------------------------------------------------------- +/* This is used to merge the APT::Keep-Fds with the provided KeepFDs + * set. + */ +void MergeKeepFdsFromConfiguration(std::set &KeepFDs) +{ + Configuration::Item const *Opts = _config->Tree("APT::Keep-Fds"); + if (Opts != 0 && Opts->Child != 0) + { + Opts = Opts->Child; + for (; Opts != 0; Opts = Opts->Next) + { + if (Opts->Value.empty() == true) + continue; + int fd = atoi(Opts->Value.c_str()); + KeepFDs.insert(fd); + } + } +} + /*}}}*/ // ExecFork - Magical fork that sanitizes the context before execing /*{{{*/ // --------------------------------------------------------------------- /* This is used if you want to cleanse the environment for the forked child, it fixes up the important signals and nukes all of the fds, otherwise acts like normal fork. */ pid_t ExecFork() +{ + set KeepFDs; + // we need to merge the Keep-Fds as external tools like + // debconf-apt-progress use it + MergeKeepFdsFromConfiguration(KeepFDs); + return ExecFork(KeepFDs); +} + +pid_t ExecFork(std::set KeepFDs) { // Fork off the process pid_t Process = fork(); @@ -781,22 +816,8 @@ pid_t ExecFork() signal(SIGCONT,SIG_DFL); signal(SIGTSTP,SIG_DFL); - set KeepFDs; - Configuration::Item const *Opts = _config->Tree("APT::Keep-Fds"); - if (Opts != 0 && Opts->Child != 0) - { - Opts = Opts->Child; - for (; Opts != 0; Opts = Opts->Next) - { - if (Opts->Value.empty() == true) - continue; - int fd = atoi(Opts->Value.c_str()); - KeepFDs.insert(fd); - } - } - // Close all of our FDs - just in case - for (int K = 3; K != 40; K++) + for (int K = 3; K != sysconf(_SC_OPEN_MAX); K++) { if(KeepFDs.find(K) == KeepFDs.end()) fcntl(K,F_SETFD,FD_CLOEXEC); @@ -941,9 +962,6 @@ bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Co if ((Mode & Atomic) == Atomic) { Flags |= Replace; - char *name = strdup((FileName + ".XXXXXX").c_str()); - TemporaryFileName = string(mktemp(name)); - free(name); } else if ((Mode & (Exclusive | Create)) == (Exclusive | Create)) { @@ -966,11 +984,24 @@ bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Co if_FLAGGED_SET(Create, O_CREAT); if_FLAGGED_SET(Empty, O_TRUNC); if_FLAGGED_SET(Exclusive, O_EXCL); - else if_FLAGGED_SET(Atomic, O_EXCL); #undef if_FLAGGED_SET - if (TemporaryFileName.empty() == false) - iFd = open(TemporaryFileName.c_str(), fileflags, Perms); + if ((Mode & Atomic) == Atomic) + { + char *name = strdup((FileName + ".XXXXXX").c_str()); + + if((iFd = mkstemp(name)) == -1) + { + free(name); + return FileFdErrno("mkstemp", "Could not create temporary file for %s", FileName.c_str()); + } + + TemporaryFileName = string(name); + free(name); + + if(Perms != 600 && fchmod(iFd, Perms) == -1) + return FileFdErrno("fchmod", "Could not change permissions for temporary file %s", TemporaryFileName.c_str()); + } else iFd = open(FileName.c_str(), fileflags, Perms); @@ -1218,11 +1249,9 @@ FileFd::~FileFd() { Close(); if (d != NULL) - { d->CloseDown(FileName); - delete d; - d = NULL; - } + delete d; + d = NULL; } /*}}}*/ // FileFd::Read - Read a bit of the file /*{{{*/ @@ -1231,7 +1260,7 @@ FileFd::~FileFd() gracefully. */ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) { - int Res; + ssize_t Res; errno = 0; if (Actual != 0) *Actual = 0; @@ -1331,7 +1360,7 @@ char* FileFd::ReadLine(char *To, unsigned long long const Size) /* */ bool FileFd::Write(const void *From,unsigned long long Size) { - int Res; + ssize_t Res; errno = 0; do { @@ -1385,7 +1414,7 @@ bool FileFd::Write(const void *From,unsigned long long Size) } bool FileFd::Write(int Fd, const void *From, unsigned long long Size) { - int Res; + ssize_t Res; errno = 0; do { @@ -1458,14 +1487,14 @@ bool FileFd::Seek(unsigned long long To) d->seekpos = To; return true; } - int res; + off_t res; #ifdef HAVE_ZLIB if (d != NULL && d->gz) res = gzseek(d->gz,To,SEEK_SET); else #endif res = lseek(iFd,To,SEEK_SET); - if (res != (signed)To) + if (res != (off_t)To) return FileFdError("Unable to seek to %llu", To); if (d != NULL) @@ -1496,7 +1525,7 @@ bool FileFd::Skip(unsigned long long Over) return true; } - int res; + off_t res; #ifdef HAVE_ZLIB if (d != NULL && d->gz != NULL) res = gzseek(d->gz,Over,SEEK_CUR); @@ -1516,6 +1545,9 @@ bool FileFd::Skip(unsigned long long Over) /* */ bool FileFd::Truncate(unsigned long long To) { + // truncating /dev/null is always successful - as we get an error otherwise + if (To == 0 && FileName == "/dev/null") + return true; #if defined HAVE_ZLIB || defined HAVE_BZ2 if (d != NULL && (d->gz != NULL || d->bz2 != NULL)) return FileFdError("Truncating compressed files is not implemented (%s)", FileName.c_str()); @@ -1598,7 +1630,11 @@ unsigned long long FileFd::Size() char ignore[1000]; unsigned long long read = 0; do { - Read(ignore, sizeof(ignore), &read); + if (Read(ignore, sizeof(ignore), &read) == false) + { + Seek(oldSeek); + return 0; + } } while(read != 0); size = Tell(); Seek(oldSeek); @@ -1615,10 +1651,16 @@ unsigned long long FileFd::Size() * bits of the file */ // FIXME: Size for gz-files is limited by 32bit… no largefile support if (lseek(iFd, -4, SEEK_END) < 0) - return FileFdErrno("lseek","Unable to seek to end of gzipped file"); - size = 0L; + { + FileFdErrno("lseek","Unable to seek to end of gzipped file"); + return 0; + } + size = 0; if (read(iFd, &size, 4) != 4) - return FileFdErrno("read","Unable to read original size of gzipped file"); + { + FileFdErrno("read","Unable to read original size of gzipped file"); + return 0; + } #ifdef WORDS_BIGENDIAN uint32_t tmp_size = size; @@ -1628,7 +1670,10 @@ unsigned long long FileFd::Size() #endif if (lseek(iFd, oldPos, SEEK_SET) < 0) - return FileFdErrno("lseek","Unable to seek in gzipped file"); + { + FileFdErrno("lseek","Unable to seek in gzipped file"); + return 0; + } return size; } @@ -1752,3 +1797,33 @@ bool FileFd::FileFdError(const char *Description,...) { /*}}}*/ gzFile FileFd::gzFd() { return (gzFile) d->gz; } + + +// Glob - wrapper around "glob()" /*{{{*/ +// --------------------------------------------------------------------- +/* */ +std::vector Glob(std::string const &pattern, int flags) +{ + std::vector result; + glob_t globbuf; + int glob_res; + unsigned int i; + + glob_res = glob(pattern.c_str(), flags, NULL, &globbuf); + + if (glob_res != 0) + { + if(glob_res != GLOB_NOMATCH) { + _error->Errno("glob", "Problem with glob"); + return result; + } + } + + // append results + for(i=0;i