diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/tsocket/config.mk | 3 | ||||
| -rw-r--r-- | lib/tsocket/tsocket_helpers.c | 177 | ||||
| -rw-r--r-- | lib/tsocket/tsocket_internal.h | 4 |
3 files changed, 183 insertions, 1 deletions
diff --git a/lib/tsocket/config.mk b/lib/tsocket/config.mk index afc625d5db..2ba6b3969c 100644 --- a/lib/tsocket/config.mk +++ b/lib/tsocket/config.mk @@ -2,7 +2,8 @@ PRIVATE_DEPENDENCIES = LIBTALLOC LIBTEVENT LIBREPLACE_NETWORK LIBTSOCKET_OBJ_FILES = $(addprefix ../lib/tsocket/, \ - tsocket.o) + tsocket.o \ + tsocket_helpers.o) PUBLIC_HEADERS += $(addprefix ../lib/tsocket/, \ tsocket.h\ diff --git a/lib/tsocket/tsocket_helpers.c b/lib/tsocket/tsocket_helpers.c new file mode 100644 index 0000000000..b2edf43d97 --- /dev/null +++ b/lib/tsocket/tsocket_helpers.c @@ -0,0 +1,177 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Stefan Metzmacher 2009 + + ** NOTE! The following LGPL license applies to the tevent + ** library. This does NOT imply that all of Samba is released + ** under the LGPL + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see <http://www.gnu.org/licenses/>. +*/ + +#include "replace.h" +#include "system/network.h" +#include "system/filesys.h" +#include "tsocket.h" +#include "tsocket_internal.h" + +int tsocket_error_from_errno(int ret, + int sys_errno, + bool *retry) +{ + *retry = false; + + if (ret >= 0) { + return 0; + } + + if (ret != -1) { + return EIO; + } + + if (sys_errno == 0) { + return EIO; + } + + if (sys_errno == EINTR) { + *retry = true; + return sys_errno; + } + + if (sys_errno == EINPROGRESS) { + *retry = true; + return sys_errno; + } + + if (sys_errno == EAGAIN) { + *retry = true; + return sys_errno; + } + +#ifdef EWOULDBLOCK + if (sys_errno == EWOULDBLOCK) { + *retry = true; + return sys_errno; + } +#endif + + return sys_errno; +} + +int tsocket_simple_int_recv(struct tevent_req *req, int *perrno) +{ + enum tevent_req_state state; + uint64_t error; + + if (!tevent_req_is_error(req, &state, &error)) { + return 0; + } + + switch (state) { + case TEVENT_REQ_NO_MEMORY: + *perrno = ENOMEM; + return -1; + case TEVENT_REQ_TIMED_OUT: + *perrno = ETIMEDOUT; + return -1; + case TEVENT_REQ_USER_ERROR: + *perrno = (int)error; + return -1; + default: + *perrno = EIO; + return -1; + } + + *perrno = EIO; + return -1; +} + +int tsocket_common_prepare_fd(int fd, bool high_fd) +{ + int i; + int sys_errno = 0; + int fds[3]; + int num_fds = 0; + + int result, flags; + + if (fd == -1) { + return -1; + } + + /* first make a fd >= 3 */ + if (high_fd) { + while (fd < 3) { + fds[num_fds++] = fd; + fd = dup(fd); + if (fd == -1) { + sys_errno = errno; + break; + } + } + for (i=0; i<num_fds; i++) { + close(fds[i]); + } + if (fd == -1) { + errno = sys_errno; + return fd; + } + } + + /* fd should be nonblocking. */ + +#ifdef O_NONBLOCK +#define FLAG_TO_SET O_NONBLOCK +#else +#ifdef SYSV +#define FLAG_TO_SET O_NDELAY +#else /* BSD */ +#define FLAG_TO_SET FNDELAY +#endif +#endif + + if ((flags = fcntl(fd, F_GETFL)) == -1) { + goto fail; + } + + flags |= FLAG_TO_SET; + if (fcntl(fd, F_SETFL, flags) == -1) { + goto fail; + } + +#undef FLAG_TO_SET + + /* fd should be closed on exec() */ +#ifdef FD_CLOEXEC + result = flags = fcntl(fd, F_GETFD, 0); + if (flags >= 0) { + flags |= FD_CLOEXEC; + result = fcntl(fd, F_SETFD, flags); + } + if (result < 0) { + goto fail; + } +#endif + return fd; + + fail: + if (fd != -1) { + sys_errno = errno; + close(fd); + errno = sys_errno; + } + return -1; +} + diff --git a/lib/tsocket/tsocket_internal.h b/lib/tsocket/tsocket_internal.h index fccd1fbeda..e4a4908f3e 100644 --- a/lib/tsocket/tsocket_internal.h +++ b/lib/tsocket/tsocket_internal.h @@ -149,5 +149,9 @@ struct tsocket_address *_tsocket_address_create(TALLOC_CTX *mem_ctx, _tsocket_address_create(mem_ctx, ops, state, sizeof(type), \ #type, location) +int tsocket_error_from_errno(int ret, int sys_errno, bool *retry); +int tsocket_simple_int_recv(struct tevent_req *req, int *perrno); +int tsocket_common_prepare_fd(int fd, bool high_fd); + #endif /* _TSOCKET_H */ |