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kernel: retain POSIX file descriptor close-on-exec flags

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This commit is contained in:
nmzik
2026-10-08 02:56:29 +04:00
parent de62664908
commit db41d0482f
3 changed files with 36 additions and 5 deletions
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src/kernel/fileSystem.cpp
+28 -5
View File
@@ -70,6 +70,7 @@ struct File {
std::atomic_bool writable;
std::atomic_bool append;
std::atomic_bool sync_writes;
std::atomic_bool close_on_exec;
SpecialFile special;
Common::Mutex mutex;
std::vector<uint8_t> dirents;
@@ -449,11 +450,12 @@ int KYTY_SYSV_ABI KernelOpen(const char* path, int flags, uint16_t mode) {
EXIT_IF(file == nullptr || file->opened || file->directory);
file->name = path;
file->readable = rw_mode != Common::File::Mode::Write;
file->writable = rw_mode != Common::File::Mode::Read;
file->append = append;
file->sync_writes = fsync || sync || dsync;
file->name = path;
file->readable = rw_mode != Common::File::Mode::Write;
file->writable = rw_mode != Common::File::Mode::Read;
file->append = append;
file->sync_writes = fsync || sync || dsync;
file->close_on_exec = (static_cast<uint32_t>(flags) & 0x00100000u) != 0;
if (!directory && IsRandomDevice(file->name)) {
file->real_name = file->name;
@@ -585,6 +587,27 @@ int KYTY_SYSV_ABI KernelClose(int d) {
return OK;
}
int KYTY_SYSV_ABI KernelFcntl(int d, int command, int arg) {
PRINT_NAME();
if (d < DESCRIPTOR_MIN) {
return KERNEL_ERROR_EBADF;
}
auto* file = g_files->GetFile(d);
if (file == nullptr || !file->opened) {
return KERNEL_ERROR_EBADF;
}
switch (command) {
case 1: return file->close_on_exec.load(std::memory_order_relaxed); // F_GETFD
case 2: // F_SETFD, FD_CLOEXEC
file->close_on_exec.store((arg & 1) != 0, std::memory_order_relaxed);
return OK;
default: return KERNEL_ERROR_EINVAL;
}
}
int64_t KYTY_SYSV_ABI KernelRead(int d, void* buf, size_t nbytes) {
PRINT_NAME();
src/kernel/fileSystem.h
+1
View File
@@ -59,6 +59,7 @@ std::filesystem::path GetRealFilename(const std::string& mounted_file_name);
int KYTY_SYSV_ABI KernelOpen(const char* path, int flags, uint16_t mode);
int KYTY_SYSV_ABI KernelClose(int d);
int KYTY_SYSV_ABI KernelFcntl(int d, int command, int arg);
int64_t KYTY_SYSV_ABI KernelRead(int d, void* buf, size_t nbytes);
int64_t KYTY_SYSV_ABI KernelPread(int d, void* buf, size_t nbytes, int64_t offset);
int64_t KYTY_SYSV_ABI KernelPreadv(int d, const KernelIovec* iov, int iovcnt, int64_t offset);