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author | Andre Nathan <[email protected]> | 2019-04-29 09:29:59 -0300 |
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committer | John Högberg <[email protected]> | 2019-07-12 09:06:45 +0200 |
commit | 924cd70f8b7cf1fa2256055af39723b24fd6238e (patch) | |
tree | dc50661270400d205fa83c3552cb94a8c6ee989f /erts/emulator/nifs/common | |
parent | b286b7f1de4aed13ba71b817321673eb67df941e (diff) | |
download | otp-924cd70f8b7cf1fa2256055af39723b24fd6238e.tar.gz otp-924cd70f8b7cf1fa2256055af39723b24fd6238e.tar.bz2 otp-924cd70f8b7cf1fa2256055af39723b24fd6238e.zip |
file: allow read_file_info on file descriptors
Diffstat (limited to 'erts/emulator/nifs/common')
-rw-r--r-- | erts/emulator/nifs/common/prim_file_nif.c | 53 | ||||
-rw-r--r-- | erts/emulator/nifs/common/prim_file_nif.h | 1 |
2 files changed, 37 insertions, 17 deletions
diff --git a/erts/emulator/nifs/common/prim_file_nif.c b/erts/emulator/nifs/common/prim_file_nif.c index 9e9a14844e..5c5e9a2d30 100644 --- a/erts/emulator/nifs/common/prim_file_nif.c +++ b/erts/emulator/nifs/common/prim_file_nif.c @@ -162,6 +162,7 @@ WRAP_FILE_HANDLE_EXPORT(allocate_nif) WRAP_FILE_HANDLE_EXPORT(advise_nif) WRAP_FILE_HANDLE_EXPORT(get_handle_nif) WRAP_FILE_HANDLE_EXPORT(ipread_s32bu_p32bu_nif) +WRAP_FILE_HANDLE_EXPORT(read_handle_info_nif) static ErlNifFunc nif_funcs[] = { /* File handle ops */ @@ -176,6 +177,7 @@ static ErlNifFunc nif_funcs[] = { {"truncate_nif", 1, truncate_nif, ERL_NIF_DIRTY_JOB_IO_BOUND}, {"allocate_nif", 3, allocate_nif, ERL_NIF_DIRTY_JOB_IO_BOUND}, {"advise_nif", 4, advise_nif, ERL_NIF_DIRTY_JOB_IO_BOUND}, + {"read_handle_info_nif", 1, read_handle_info_nif, ERL_NIF_DIRTY_JOB_IO_BOUND}, /* Filesystem ops */ {"make_hard_link_nif", 2, make_hard_link_nif, ERL_NIF_DIRTY_JOB_IO_BOUND}, @@ -896,6 +898,26 @@ static ERL_NIF_TERM get_handle_nif_impl(efile_data_t *d, ErlNifEnv *env, int arg return efile_get_handle(env, d); } +static ERL_NIF_TERM build_file_info(ErlNifEnv *env, efile_fileinfo_t *info) { + /* #file_info as declared in file.hrl */ + return enif_make_tuple(env, 14, + am_file_info, + enif_make_uint64(env, info->size), + efile_filetype_to_atom(info->type), + efile_access_to_atom(info->access), + enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->a_time)), + enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->m_time)), + enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->c_time)), + enif_make_uint(env, info->mode), + enif_make_uint(env, info->links), + enif_make_uint(env, info->major_device), + enif_make_uint(env, info->minor_device), + enif_make_uint(env, info->inode), + enif_make_uint(env, info->uid), + enif_make_uint(env, info->gid) + ); +} + static ERL_NIF_TERM read_info_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) { posix_errno_t posix_errno; @@ -914,23 +936,20 @@ static ERL_NIF_TERM read_info_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM a return posix_error_to_tuple(env, posix_errno); } - /* #file_info as declared in file.hrl */ - return enif_make_tuple(env, 14, - am_file_info, - enif_make_uint64(env, info.size), - efile_filetype_to_atom(info.type), - efile_access_to_atom(info.access), - enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.a_time)), - enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.m_time)), - enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info.c_time)), - enif_make_uint(env, info.mode), - enif_make_uint(env, info.links), - enif_make_uint(env, info.major_device), - enif_make_uint(env, info.minor_device), - enif_make_uint(env, info.inode), - enif_make_uint(env, info.uid), - enif_make_uint(env, info.gid) - ); + return build_file_info(env, &info); +} + +static ERL_NIF_TERM read_handle_info_nif_impl(efile_data_t *d, ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) { + posix_errno_t posix_errno; + efile_fileinfo_t info = {0}; + + ASSERT(argc == 0); + + if((posix_errno = efile_read_handle_info(d, &info))) { + return posix_error_to_tuple(env, posix_errno); + } + + return build_file_info(env, &info); } static ERL_NIF_TERM set_permissions_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) { diff --git a/erts/emulator/nifs/common/prim_file_nif.h b/erts/emulator/nifs/common/prim_file_nif.h index 020714a03b..28c1ea9d00 100644 --- a/erts/emulator/nifs/common/prim_file_nif.h +++ b/erts/emulator/nifs/common/prim_file_nif.h @@ -170,6 +170,7 @@ int efile_close(efile_data_t *d, posix_errno_t *error); /* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */ posix_errno_t efile_read_info(const efile_path_t *path, int follow_link, efile_fileinfo_t *result); +posix_errno_t efile_read_handle_info(efile_data_t *d, efile_fileinfo_t *result); /** @brief Sets the file times to the given values. Refer to efile_fileinfo_t * for a description of each. */ |