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还原posix fstat代码段的位置

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mutouyun 2022-02-04 18:08:17 +08:00
parent a2e5cc7804
commit 912c1bfc64
1 changed files with 6 additions and 7 deletions
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13
src/libipc/platform/posix/shm_posix.cpp
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@ -120,19 +120,18 @@ void * get_mem(id_t id, std::size_t * size) {
ipc::error("fail get_mem: invalid id (fd = -1)\n"); ipc::error("fail get_mem: invalid id (fd = -1)\n");
return nullptr; return nullptr;
} }
struct stat st;
if (::fstat(fd, &st) != 0) {
ipc::error("fail fstat[%s]: name = %s, size = %zd\n", curr_error(), ii->name_.c_str(), ii->size_);
return nullptr;
}
if (ii->size_ == 0) { if (ii->size_ == 0) {
struct stat st;
if (::fstat(fd, &st) != 0) {
ipc::error("fail fstat[%s]: name = %s, size = %zd\n", curr_error(), ii->name_.c_str(), ii->size_);
return nullptr;
}
ii->size_ = static_cast<std::size_t>(st.st_size); ii->size_ = static_cast<std::size_t>(st.st_size);
if ((ii->size_ <= sizeof(info_t)) || (ii->size_ % sizeof(info_t))) { if ((ii->size_ <= sizeof(info_t)) || (ii->size_ % sizeof(info_t))) {
ipc::error("fail get_mem: %s, invalid size = %zd\n", ii->name_.c_str(), ii->size_); ipc::error("fail get_mem: %s, invalid size = %zd\n", ii->name_.c_str(), ii->size_);
return nullptr; return nullptr;
} }
} } else {
else {
ii->size_ = calc_size(ii->size_); ii->size_ = calc_size(ii->size_);
if (::ftruncate(fd, static_cast<off_t>(ii->size_)) != 0) { if (::ftruncate(fd, static_cast<off_t>(ii->size_)) != 0) {
ipc::error("fail ftruncate[%s]: name = %s, size = %zd\n", curr_error(), ii->name_.c_str(), ii->size_); ipc::error("fail ftruncate[%s]: name = %s, size = %zd\n", curr_error(), ii->name_.c_str(), ii->size_);