diff options
Diffstat (limited to 'contrib/atf/atf-c++/detail/fs.cpp')
| -rw-r--r-- | contrib/atf/atf-c++/detail/fs.cpp | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/contrib/atf/atf-c++/detail/fs.cpp b/contrib/atf/atf-c++/detail/fs.cpp new file mode 100644 index 000000000000..bcef9204d129 --- /dev/null +++ b/contrib/atf/atf-c++/detail/fs.cpp @@ -0,0 +1,513 @@ +// Copyright (c) 2007 The NetBSD Foundation, Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND +// CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, +// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +// IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY +// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE +// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER +// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR +// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN +// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include "atf-c++/detail/fs.hpp" + +#if defined(HAVE_CONFIG_H) +#include "config.h" +#endif + +extern "C" { +#include <sys/param.h> +#include <sys/types.h> +#include <sys/mount.h> +#include <sys/stat.h> +#include <sys/wait.h> +#include <dirent.h> +#include <libgen.h> +#include <unistd.h> +} + +#include <cerrno> +#include <cstdlib> +#include <cstring> + +extern "C" { +#include "atf-c/error.h" +} + +#include "atf-c++/detail/env.hpp" +#include "atf-c++/detail/exceptions.hpp" +#include "atf-c++/detail/process.hpp" +#include "atf-c++/detail/sanity.hpp" +#include "atf-c++/detail/text.hpp" +#include "atf-c++/utils.hpp" + +namespace impl = atf::fs; +#define IMPL_NAME "atf::fs" + +// ------------------------------------------------------------------------ +// Auxiliary functions. +// ------------------------------------------------------------------------ + +static bool safe_access(const impl::path&, int, int); + +//! +//! \brief A controlled version of access(2). +//! +//! This function reimplements the standard access(2) system call to +//! safely control its exit status and raise an exception in case of +//! failure. +//! +static +bool +safe_access(const impl::path& p, int mode, int experr) +{ + bool ok; + + atf_error_t err = atf_fs_eaccess(p.c_path(), mode); + if (atf_is_error(err)) { + if (atf_error_is(err, "libc")) { + if (atf_libc_error_code(err) == experr) { + atf_error_free(err); + ok = false; + } else { + atf::throw_atf_error(err); + // XXX Silence warning; maybe throw_atf_error should be + // an exception and not a function. + ok = false; + } + } else { + atf::throw_atf_error(err); + // XXX Silence warning; maybe throw_atf_error should be + // an exception and not a function. + ok = false; + } + } else + ok = true; + + return ok; +} + +// ------------------------------------------------------------------------ +// The "path" class. +// ------------------------------------------------------------------------ + +impl::path::path(const std::string& s) +{ + atf_error_t err = atf_fs_path_init_fmt(&m_path, "%s", s.c_str()); + if (atf_is_error(err)) + throw_atf_error(err); +} + +impl::path::path(const path& p) +{ + atf_error_t err = atf_fs_path_copy(&m_path, &p.m_path); + if (atf_is_error(err)) + throw_atf_error(err); +} + +impl::path::path(const atf_fs_path_t *p) +{ + atf_error_t err = atf_fs_path_copy(&m_path, p); + if (atf_is_error(err)) + throw_atf_error(err); +} + +impl::path::~path(void) +{ + atf_fs_path_fini(&m_path); +} + +const char* +impl::path::c_str(void) + const +{ + return atf_fs_path_cstring(&m_path); +} + +const atf_fs_path_t* +impl::path::c_path(void) + const +{ + return &m_path; +} + +std::string +impl::path::str(void) + const +{ + return c_str(); +} + +bool +impl::path::is_absolute(void) + const +{ + return atf_fs_path_is_absolute(&m_path); +} + +bool +impl::path::is_root(void) + const +{ + return atf_fs_path_is_root(&m_path); +} + +impl::path +impl::path::branch_path(void) + const +{ + atf_fs_path_t bp; + atf_error_t err; + + err = atf_fs_path_branch_path(&m_path, &bp); + if (atf_is_error(err)) + throw_atf_error(err); + + path p(atf_fs_path_cstring(&bp)); + atf_fs_path_fini(&bp); + return p; +} + +std::string +impl::path::leaf_name(void) + const +{ + atf_dynstr_t ln; + atf_error_t err; + + err = atf_fs_path_leaf_name(&m_path, &ln); + if (atf_is_error(err)) + throw_atf_error(err); + + std::string s(atf_dynstr_cstring(&ln)); + atf_dynstr_fini(&ln); + return s; +} + +impl::path +impl::path::to_absolute(void) + const +{ + atf_fs_path_t pa; + + atf_error_t err = atf_fs_path_to_absolute(&m_path, &pa); + if (atf_is_error(err)) + throw_atf_error(err); + + path p(atf_fs_path_cstring(&pa)); + atf_fs_path_fini(&pa); + return p; +} + +impl::path& +impl::path::operator=(const path& p) +{ + atf_fs_path_t tmp; + + atf_error_t err = atf_fs_path_init_fmt(&tmp, "%s", p.c_str()); + if (atf_is_error(err)) + throw_atf_error(err); + else { + atf_fs_path_fini(&m_path); + m_path = tmp; + } + + return *this; +} + +bool +impl::path::operator==(const path& p) + const +{ + return atf_equal_fs_path_fs_path(&m_path, &p.m_path); +} + +bool +impl::path::operator!=(const path& p) + const +{ + return !atf_equal_fs_path_fs_path(&m_path, &p.m_path); +} + +impl::path +impl::path::operator/(const std::string& p) + const +{ + path p2 = *this; + + atf_error_t err = atf_fs_path_append_fmt(&p2.m_path, "%s", p.c_str()); + if (atf_is_error(err)) + throw_atf_error(err); + + return p2; +} + +impl::path +impl::path::operator/(const path& p) + const +{ + path p2 = *this; + + atf_error_t err = atf_fs_path_append_fmt(&p2.m_path, "%s", + atf_fs_path_cstring(&p.m_path)); + if (atf_is_error(err)) + throw_atf_error(err); + + return p2; +} + +bool +impl::path::operator<(const path& p) + const +{ + const char *s1 = atf_fs_path_cstring(&m_path); + const char *s2 = atf_fs_path_cstring(&p.m_path); + return std::strcmp(s1, s2) < 0; +} + +// ------------------------------------------------------------------------ +// The "file_info" class. +// ------------------------------------------------------------------------ + +const int impl::file_info::blk_type = atf_fs_stat_blk_type; +const int impl::file_info::chr_type = atf_fs_stat_chr_type; +const int impl::file_info::dir_type = atf_fs_stat_dir_type; +const int impl::file_info::fifo_type = atf_fs_stat_fifo_type; +const int impl::file_info::lnk_type = atf_fs_stat_lnk_type; +const int impl::file_info::reg_type = atf_fs_stat_reg_type; +const int impl::file_info::sock_type = atf_fs_stat_sock_type; +const int impl::file_info::wht_type = atf_fs_stat_wht_type; + +impl::file_info::file_info(const path& p) +{ + atf_error_t err; + + err = atf_fs_stat_init(&m_stat, p.c_path()); + if (atf_is_error(err)) + throw_atf_error(err); +} + +impl::file_info::file_info(const file_info& fi) +{ + atf_fs_stat_copy(&m_stat, &fi.m_stat); +} + +impl::file_info::~file_info(void) +{ + atf_fs_stat_fini(&m_stat); +} + +dev_t +impl::file_info::get_device(void) + const +{ + return atf_fs_stat_get_device(&m_stat); +} + +ino_t +impl::file_info::get_inode(void) + const +{ + return atf_fs_stat_get_inode(&m_stat); +} + +mode_t +impl::file_info::get_mode(void) + const +{ + return atf_fs_stat_get_mode(&m_stat); +} + +off_t +impl::file_info::get_size(void) + const +{ + return atf_fs_stat_get_size(&m_stat); +} + +int +impl::file_info::get_type(void) + const +{ + return atf_fs_stat_get_type(&m_stat); +} + +bool +impl::file_info::is_owner_readable(void) + const +{ + return atf_fs_stat_is_owner_readable(&m_stat); +} + +bool +impl::file_info::is_owner_writable(void) + const +{ + return atf_fs_stat_is_owner_writable(&m_stat); +} + +bool +impl::file_info::is_owner_executable(void) + const +{ + return atf_fs_stat_is_owner_executable(&m_stat); +} + +bool +impl::file_info::is_group_readable(void) + const +{ + return atf_fs_stat_is_group_readable(&m_stat); +} + +bool +impl::file_info::is_group_writable(void) + const +{ + return atf_fs_stat_is_group_writable(&m_stat); +} + +bool +impl::file_info::is_group_executable(void) + const +{ + return atf_fs_stat_is_group_executable(&m_stat); +} + +bool +impl::file_info::is_other_readable(void) + const +{ + return atf_fs_stat_is_other_readable(&m_stat); +} + +bool +impl::file_info::is_other_writable(void) + const +{ + return atf_fs_stat_is_other_writable(&m_stat); +} + +bool +impl::file_info::is_other_executable(void) + const +{ + return atf_fs_stat_is_other_executable(&m_stat); +} + +// ------------------------------------------------------------------------ +// The "directory" class. +// ------------------------------------------------------------------------ + +impl::directory::directory(const path& p) +{ + DIR* dp = ::opendir(p.c_str()); + if (dp == NULL) + throw system_error(IMPL_NAME "::directory::directory(" + + p.str() + ")", "opendir(3) failed", errno); + + struct dirent* dep; + while ((dep = ::readdir(dp)) != NULL) { + path entryp = p / dep->d_name; + insert(value_type(dep->d_name, file_info(entryp))); + } + + if (::closedir(dp) == -1) + throw system_error(IMPL_NAME "::directory::directory(" + + p.str() + ")", "closedir(3) failed", errno); +} + +std::set< std::string > +impl::directory::names(void) + const +{ + std::set< std::string > ns; + + for (const_iterator iter = begin(); iter != end(); iter++) + ns.insert((*iter).first); + + return ns; +} + +// ------------------------------------------------------------------------ +// Free functions. +// ------------------------------------------------------------------------ + +bool +impl::exists(const path& p) +{ + atf_error_t err; + bool b; + + err = atf_fs_exists(p.c_path(), &b); + if (atf_is_error(err)) + throw_atf_error(err); + + return b; +} + +bool +impl::have_prog_in_path(const std::string& prog) +{ + PRE(prog.find('/') == std::string::npos); + + // Do not bother to provide a default value for PATH. If it is not + // there something is broken in the user's environment. + if (!atf::env::has("PATH")) + throw std::runtime_error("PATH not defined in the environment"); + std::vector< std::string > dirs = + atf::text::split(atf::env::get("PATH"), ":"); + + bool found = false; + for (std::vector< std::string >::const_iterator iter = dirs.begin(); + !found && iter != dirs.end(); iter++) { + const path& dir = path(*iter); + + if (is_executable(dir / prog)) + found = true; + } + return found; +} + +bool +impl::is_executable(const path& p) +{ + if (!exists(p)) + return false; + return safe_access(p, atf_fs_access_x, EACCES); +} + +void +impl::remove(const path& p) +{ + if (file_info(p).get_type() == file_info::dir_type) + throw atf::system_error(IMPL_NAME "::remove(" + p.str() + ")", + "Is a directory", + EPERM); + if (::unlink(p.c_str()) == -1) + throw atf::system_error(IMPL_NAME "::remove(" + p.str() + ")", + "unlink(" + p.str() + ") failed", + errno); +} + +void +impl::rmdir(const path& p) +{ + atf_error_t err = atf_fs_rmdir(p.c_path()); + if (atf_is_error(err)) + throw_atf_error(err); +} |