From 836bd5a7a24623ccebb2cfb461190617410fd553 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 29 Mar 2020 05:45:40 +0300 Subject: libcamera: ipa_module: Simplify error handling in loadIPAModuleInfo() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use the File helper class to handle cleanup of the mapped file to simplify error handling in loadIPAModuleInfo(). Signed-off-by: Laurent Pinchart Reviewed-by: Niklas Söderlund --- src/libcamera/ipa_module.cpp | 58 ++++++++++++++++---------------------------- 1 file changed, 21 insertions(+), 37 deletions(-) diff --git a/src/libcamera/ipa_module.cpp b/src/libcamera/ipa_module.cpp index a01d0757..d1c411e1 100644 --- a/src/libcamera/ipa_module.cpp +++ b/src/libcamera/ipa_module.cpp @@ -21,6 +21,7 @@ #include #include +#include "file.h" #include "log.h" #include "pipeline_handler.h" #include "utils.h" @@ -283,55 +284,38 @@ IPAModule::~IPAModule() int IPAModule::loadIPAModuleInfo() { - int fd = open(libPath_.c_str(), O_RDONLY); - if (fd < 0) { - int ret = -errno; + File file{ libPath_ }; + if (!file.open(File::ReadOnly)) { LOG(IPAModule, Error) << "Failed to open IPA library: " - << strerror(-ret); - return ret; + << strerror(-file.error()); + return file.error(); } - void *data = nullptr; - size_t dataSize; - void *map; - size_t soSize; - struct stat st; - int ret = fstat(fd, &st); - if (ret < 0) - goto close; - soSize = st.st_size; - map = mmap(NULL, soSize, PROT_READ, MAP_PRIVATE, fd, 0); - if (map == MAP_FAILED) { - ret = -errno; - goto close; + Span data = file.map(0, -1, File::MapPrivate); + int ret = elfVerifyIdent(data.data(), data.size()); + if (ret) { + LOG(IPAModule, Error) << "IPA module is not an ELF file"; + return ret; } - ret = elfVerifyIdent(map, soSize); - if (ret) - goto unmap; + void *info = nullptr; + size_t infoSize; - std::tie(data, dataSize) = elfLoadSymbol(map, soSize, "ipaModuleInfo"); - - if (data && dataSize == sizeof(info_)) - memcpy(&info_, data, dataSize); + std::tie(info, infoSize) = elfLoadSymbol(data.data(), data.size(), + "ipaModuleInfo"); + if (!info || infoSize != sizeof(info_)) { + LOG(IPAModule, Error) << "IPA module has no valid info"; + return -EINVAL; + } - if (!data) - goto unmap; + memcpy(&info_, info, infoSize); if (info_.moduleAPIVersion != IPA_MODULE_API_VERSION) { LOG(IPAModule, Error) << "IPA module API version mismatch"; - ret = -EINVAL; + return -EINVAL; } -unmap: - munmap(map, soSize); -close: - if (ret || !data) - LOG(IPAModule, Error) - << "Error loading IPA module info for " << libPath_; - - close(fd); - return ret; + return 0; } /** -- cgit v1.2.1