diff options
Diffstat (limited to 'erts/emulator/drivers/ose')
| -rw-r--r-- | erts/emulator/drivers/ose/ose_efile.c | 1125 | ||||
| -rw-r--r-- | erts/emulator/drivers/ose/ose_signal_drv.c | 897 | ||||
| -rw-r--r-- | erts/emulator/drivers/ose/ttsl_drv.c | 69 |
3 files changed, 0 insertions, 2091 deletions
diff --git a/erts/emulator/drivers/ose/ose_efile.c b/erts/emulator/drivers/ose/ose_efile.c deleted file mode 100644 index c8337a95d5..0000000000 --- a/erts/emulator/drivers/ose/ose_efile.c +++ /dev/null @@ -1,1125 +0,0 @@ -/* - * %CopyrightBegin% - * - * Copyright Ericsson AB 1997-2012. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - * %CopyrightEnd% - */ -/* - * Purpose: Provides file and directory operations for OSE. - */ -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif -#if defined(HAVE_POSIX_FALLOCATE) && !defined(__sun) && !defined(__sun__) -#define _XOPEN_SOURCE 600 -#endif -#if !defined(_GNU_SOURCE) && defined(HAVE_LINUX_FALLOC_H) -#define _GNU_SOURCE -#endif -#include "sys.h" -#include "erl_driver.h" -#include "erl_efile.h" -#if defined(DARWIN) || defined(HAVE_LINUX_FALLOC_H) || defined(HAVE_POSIX_FALLOCATE) -#include "fcntl.h" -#endif -#include "ose.h" -#include "unistd.h" -#include "sys/stat.h" -#include "dirent.h" -#include "sys/time.h" -#include "time.h" -#include "assert.h" - -/* Find a definition of MAXIOV, that is used in the code later. */ -#if defined IOV_MAX -#define MAXIOV IOV_MAX -#elif defined UIO_MAXIOV -#define MAXIOV UIO_MAXIOV -#else -#define MAXIOV 16 -#endif - -/* - * Macros for testing file types. - */ - -#define ISDIR(st) (((st).st_mode & S_IFMT) == S_IFDIR) -#define ISREG(st) (((st).st_mode & S_IFMT) == S_IFREG) -#define ISDEV(st) \ - (((st).st_mode&S_IFMT) == S_IFCHR || ((st).st_mode&S_IFMT) == S_IFBLK) -#define ISLNK(st) (((st).st_mode & S_IFLNK) == S_IFLNK) -#ifdef NO_UMASK -#define FILE_MODE 0644 -#define DIR_MODE 0755 -#else -#define FILE_MODE 0666 -#define DIR_MODE 0777 -#endif - -#define IS_DOT_OR_DOTDOT(s) \ - (s[0] == '.' && (s[1] == '\0' || (s[1] == '.' && s[2] == '\0'))) - -/* - * Macros for handling local file descriptors - * and mutexes. - * - * Handling of files like this is necessary because OSE - * does not allow seeking after the end of a file. So - * what we do it emulate this by keeping track of the size - * of the file and where the file's positions is. If a - * write happens after eof then we pad it. - * - * Given time this should be rewritten to get rid of the - * mutex and use the port lock to protect the data. This - * could be done be done by adapting the efile api for some - * calls to allow some meta-data to be associated with the - * open file. - */ - -#define L_FD_IS_VALID(fd_data) ((fd_data)->beyond_eof > 0) -#define L_FD_INVALIDATE(fd_data) (fd_data)->beyond_eof = 0 -#define L_FD_CUR(fd_data) (fd_data)->pos -#define L_FD_OFFS_BEYOND_EOF(fd_data, offs) \ - (((fd_data)->size > offs) ? 0 : 1) - -#define L_FD_FAIL -1 -#define L_FD_SUCCESS 1 -#define L_FD_PAD_SIZE 255 - -struct fd_meta { - ErlDrvMutex *meta_mtx; - struct fd_data *fd_data_list; -}; - -struct fd_data { - int fd; - struct fd_data *next; - struct fd_data *prev; - int pos; - int beyond_eof; - size_t size; -#ifdef DEBUG - PROCESS owner; -#endif -}; - -static int l_invalidate_local_fd(int fd); -static int l_pad_file(struct fd_data *fd_data, off_t offset); -static int check_error(int result, Efile_error* errInfo); -static struct fd_data* l_new_fd(void); -static int l_remove_local_fd(int fd); -static struct fd_data* l_find_local_fd(int fd); -static int l_update_local_fd(int fd, int pos, int size); - -static struct fd_meta* fdm = NULL; - - -/***************************************************************************/ - -static int -l_remove_local_fd(int fd) -{ - struct fd_data *fd_data; - fd_data = l_find_local_fd(fd); - - if (fd_data == NULL) { - return L_FD_FAIL; - } -#ifdef DEBUG - assert(fd_data->owner == current_process()); -#endif - erl_drv_mutex_lock(fdm->meta_mtx); - /* head ? */ - if (fd_data == fdm->fd_data_list) { - if (fd_data->next != NULL) { - /* remove link to head */ - fd_data->next->prev = NULL; - /* set new head */ - fdm->fd_data_list = fd_data->next; - } - else { - /* head is lonely */ - fdm->fd_data_list = NULL; - } - } - else { /* not head */ - if (fd_data->prev == NULL) { - erl_drv_mutex_unlock(fdm->meta_mtx); - return L_FD_FAIL; - } - else { - if (fd_data->next != NULL) { - fd_data->next->prev = fd_data->prev; - fd_data->prev->next = fd_data->next; - } - else { - fd_data->prev->next = NULL; - } - } - } - - /* scramble values */ - fd_data->beyond_eof = -1; - fd_data->next = NULL; - fd_data->prev = NULL; - fd_data->fd = -1; - - /* unlock and clean */ - driver_free(fd_data); - erl_drv_mutex_unlock(fdm->meta_mtx); - - return L_FD_SUCCESS; -} - -/***************************************************************************/ - -static int -l_invalidate_local_fd(int fd) { - struct fd_data *fd_data; - - if ((fd_data = l_find_local_fd(fd)) == NULL) { - return L_FD_FAIL; - } - - fd_data->beyond_eof = 0; - return L_FD_SUCCESS; -} - -/****************************************************************************/ - -static struct fd_data* -l_find_local_fd(int fd) { - struct fd_data *fd_data; - - fd_data = NULL; - erl_drv_mutex_lock(fdm->meta_mtx); - for (fd_data = fdm->fd_data_list; fd_data != NULL; ) { - if (fd_data->fd == fd) { -#ifdef DEBUG - assert(fd_data->owner == current_process()); -#endif - break; - } - fd_data = fd_data->next; - } - erl_drv_mutex_unlock(fdm->meta_mtx); - return fd_data; -} - -/***************************************************************************/ - -static struct fd_data* -l_new_fd(void) { - struct fd_data *fd_data; - - fd_data = driver_alloc(sizeof(struct fd_data)); - if (fd_data == NULL) { - return NULL; - } - erl_drv_mutex_lock(fdm->meta_mtx); - if (fdm->fd_data_list == NULL) { - fdm->fd_data_list = fd_data; - fdm->fd_data_list->prev = NULL; - fdm->fd_data_list->next = NULL; - } - else { - fd_data->next = fdm->fd_data_list; - fdm->fd_data_list = fd_data; - fdm->fd_data_list->prev = NULL; - } -#ifdef DEBUG - fd_data->owner = current_process(); -#endif - erl_drv_mutex_unlock(fdm->meta_mtx); - return fd_data; -} - -/***************************************************************************/ - -static int -l_update_local_fd(int fd, int pos, int size) { - struct fd_data *fd_data = NULL; - - fd_data = l_find_local_fd(fd); - /* new fd to handle? */ - if (fd_data == NULL) { - fd_data = l_new_fd(); - if (fd_data == NULL) { - /* out of memory */ - return L_FD_FAIL; - } - } - fd_data->size = size; - fd_data->pos = pos; - fd_data->fd = fd; - fd_data->beyond_eof = 1; - - return L_FD_SUCCESS; -} - -/***************************************************************************/ - -static int -l_pad_file(struct fd_data *fd_data, off_t offset) { - int size_dif; - int written = 0; - int ret_val = L_FD_SUCCESS; - char padding[L_FD_PAD_SIZE]; - - size_dif = (offset - fd_data->size); - memset(&padding, '\0', L_FD_PAD_SIZE); - - while (size_dif > 0) { - written = write(fd_data->fd, padding, - (size_dif < L_FD_PAD_SIZE) ? - size_dif : L_FD_PAD_SIZE); - if (written < 0 && errno != EINTR && errno != EAGAIN) { - ret_val = -1; - break; - } - size_dif -= written; - } - L_FD_INVALIDATE(fd_data); - return ret_val; -} - -/***************************************************************************/ - -static int -check_error(int result, Efile_error *errInfo) { - if (result < 0) { - errInfo->posix_errno = errInfo->os_errno = errno; - return 0; - } - return 1; -} - -/***************************************************************************/ - -int -efile_init() { - fdm = driver_alloc(sizeof(struct fd_meta)); - if (fdm == NULL) { - return L_FD_FAIL; - } - fdm->meta_mtx = erl_drv_mutex_create("ose_efile local fd mutex\n"); - erl_drv_mutex_lock(fdm->meta_mtx); - fdm->fd_data_list = NULL; - erl_drv_mutex_unlock(fdm->meta_mtx); - return L_FD_SUCCESS; -} - -/***************************************************************************/ - -int -efile_mkdir(Efile_error* errInfo, /* Where to return error codes. */ - char* name) /* Name of directory to create. */ -{ -#ifdef NO_MKDIR_MODE - return check_error(mkdir(name), errInfo); -#else - int res = mkdir(name, DIR_MODE); - if (res < 0 && errno == EINVAL) { - errno = ENOENT; - } - return check_error(res, errInfo); -#endif -} - -/***************************************************************************/ - -int -efile_rmdir(Efile_error* errInfo, /* Where to return error codes. */ - char* name) /* Name of directory to delete. */ -{ - if (rmdir(name) == 0) { - return 1; - } - if (errno == ENOTEMPTY) { - errno = EEXIST; - } - if (errno == EEXIST || errno == EINVAL) { - int saved_errno = errno; - struct stat file_stat; - struct stat cwd_stat; - - if(stat(name, &file_stat) != 0) { - errno = ENOENT; - return check_error(-1, errInfo); - } - /* - * The error code might be wrong if this is the current directory. - */ - if (stat(name, &file_stat) == 0 && stat(".", &cwd_stat) == 0 && - file_stat.st_ino == cwd_stat.st_ino && - file_stat.st_dev == cwd_stat.st_dev) { - saved_errno = EACCES; - } - errno = saved_errno; - } - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_delete_file(Efile_error* errInfo, /* Where to return error codes. */ - char* name) /* Name of file to delete. */ -{ - struct stat statbuf; - - if (stat(name, &statbuf) >= 0) { - /* Do not let unlink() remove directories */ - if (ISDIR(statbuf)) { - errno = EPERM; - return check_error(-1, errInfo); - } - - if (unlink(name) == 0) { - return 1; - } - - if (errno == EISDIR) { - errno = EPERM; - return check_error(-1, errInfo); - } - } - else { - if (errno == EINVAL) { - errno = ENOENT; - return check_error(-1, errInfo); - } - } - return check_error(-1, errInfo); -} - -/* - *--------------------------------------------------------------------------- - * - * Changes the name of an existing file or directory, from src to dst. - * If src and dst refer to the same file or directory, does nothing - * and returns success. Otherwise if dst already exists, it will be - * deleted and replaced by src subject to the following conditions: - * If src is a directory, dst may be an empty directory. - * If src is a file, dst may be a file. - * In any other situation where dst already exists, the rename will - * fail. - * - * Results: - * If the directory was successfully created, returns 1. - * Otherwise the return value is 0 and errno is set to - * indicate the error. Some possible values for errno are: - * - * EACCES: src or dst parent directory can't be read and/or written. - * EEXIST: dst is a non-empty directory. - * EINVAL: src is a root directory or dst is a subdirectory of src. - * EISDIR: dst is a directory, but src is not. - * ENOENT: src doesn't exist, or src or dst is "". - * ENOTDIR: src is a directory, but dst is not. - * EXDEV: src and dst are on different filesystems. - * - * Side effects: - * The implementation of rename may allow cross-filesystem renames, - * but the caller should be prepared to emulate it with copy and - * delete if errno is EXDEV. - * - *--------------------------------------------------------------------------- - */ - -int -efile_rename(Efile_error* errInfo, /* Where to return error codes. */ - char* src, /* Original name. */ - char* dst) /* New name. */ -{ - - /* temporary fix AFM does not recognize ./<file name> - * in destination remove pending on adaption of AFM fix - */ - - char *dot_str; - if (dst != NULL) { - dot_str = strchr(dst, '.'); - if (dot_str && dot_str == dst && dot_str[1] == '/') { - dst = dst+2; - } - } - - if (rename(src, dst) == 0) { - return 1; - } - if (errno == ENOTEMPTY) { - errno = EEXIST; - } - if (errno == EINVAL) { - struct stat file_stat; - - if (stat(dst, &file_stat)== 0) { - if (ISDIR(file_stat)) { - errno = EISDIR; - } - else if (ISREG(file_stat)) { - errno = ENOTDIR; - } - else { - errno = EINVAL; - } - } - else { - errno = EINVAL; - } - } - - if (strcmp(src, "/") == 0) { - errno = EINVAL; - } - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_chdir(Efile_error* errInfo, /* Where to return error codes. */ - char* name) /* Name of directory to make current. */ -{ - return check_error(chdir(name), errInfo); -} - -/***************************************************************************/ - -int -efile_getdcwd(Efile_error* errInfo, /* Where to return error codes. */ - int drive, /* 0 - current, 1 - A, 2 - B etc. */ - char* buffer, /* Where to return the current - directory. */ - size_t size) /* Size of buffer. */ -{ - if (drive == 0) { - if (getcwd(buffer, size) == NULL) - return check_error(-1, errInfo); - - return 1; - } - - /* - * Drives other than 0 is not supported on Unix. - */ - - errno = ENOTSUP; - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_readdir(Efile_error* errInfo, /* Where to return error codes. */ - char* name, /* Name of directory to open. */ - EFILE_DIR_HANDLE* p_dir_handle, /* Pointer to directory - handle of - open directory.*/ - char* buffer, /* Pointer to buffer for - one filename. */ - size_t *size) /* in-out Size of buffer, length - of name. */ -{ - DIR *dp; /* Pointer to directory structure. */ - struct dirent* dirp; /* Pointer to directory entry. */ - - /* - * If this is the first call, we must open the directory. - */ - - if (*p_dir_handle == NULL) { - dp = opendir(name); - if (dp == NULL) - return check_error(-1, errInfo); - *p_dir_handle = (EFILE_DIR_HANDLE) dp; - } - - /* - * Retrieve the name of the next file using the directory handle. - */ - - dp = *((DIR **)((void *)p_dir_handle)); - for (;;) { - dirp = readdir(dp); - if (dirp == NULL) { - closedir(dp); - return 0; - } - if (IS_DOT_OR_DOTDOT(dirp->d_name)) - continue; - buffer[0] = '\0'; - strncat(buffer, dirp->d_name, (*size)-1); - *size = strlen(dirp->d_name); - return 1; - } -} - -/***************************************************************************/ - -int -efile_openfile(Efile_error* errInfo, /* Where to return error codes. */ - char* name, /* Name of directory to open. */ - int flags, /* Flags to user for opening. */ - int* pfd, /* Where to store the file - descriptor. */ - Sint64 *pSize) /* Where to store the size of the - file. */ -{ - struct stat statbuf; - int fd; - int mode; /* Open mode. */ - - if (stat(name, &statbuf) >= 0 && !ISREG(statbuf)) { - errno = EISDIR; - return check_error(-1, errInfo); - } - - switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) { - case EFILE_MODE_READ: - mode = O_RDONLY; - break; - case EFILE_MODE_WRITE: - if (flags & EFILE_NO_TRUNCATE) - mode = O_WRONLY | O_CREAT; - else - mode = O_WRONLY | O_CREAT | O_TRUNC; - break; - case EFILE_MODE_READ_WRITE: - mode = O_RDWR | O_CREAT; - break; - default: - errno = EINVAL; - return check_error(-1, errInfo); - } - - - if (flags & EFILE_MODE_APPEND) { - mode &= ~O_TRUNC; - mode |= O_APPEND; - } - - if (flags & EFILE_MODE_EXCL) { - mode |= O_EXCL; - } - - fd = open(name, mode, FILE_MODE); - - if (!check_error(fd, errInfo)) - return 0; - - *pfd = fd; - if (pSize) { - *pSize = statbuf.st_size; - } - return 1; -} - -/***************************************************************************/ - -int -efile_may_openfile(Efile_error* errInfo, char *name) { - struct stat statbuf; /* Information about the file */ - int result; - - result = stat(name, &statbuf); - if (!check_error(result, errInfo)) - return 0; - if (!ISREG(statbuf)) { - errno = EISDIR; - return check_error(-1, errInfo); - } - return 1; -} - -/***************************************************************************/ - -void -efile_closefile(int fd) -{ - if (l_find_local_fd(fd) != NULL) { - l_remove_local_fd(fd); - } - close(fd); -} - -/***************************************************************************/ - -int -efile_fdatasync(Efile_error *errInfo, /* Where to return error codes. */ - int fd) /* File descriptor for file to sync data. */ -{ - return efile_fsync(errInfo, fd); -} - -/***************************************************************************/ - -int -efile_fsync(Efile_error *errInfo, /* Where to return error codes. */ - int fd) /* File descriptor for file to sync. */ -{ - return check_error(fsync(fd), errInfo); -} - -/***************************************************************************/ - -int -efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, - char* name, int info_for_link) -{ - struct stat statbuf; /* Information about the file */ - int result; - - result = stat(name, &statbuf); - if (!check_error(result, errInfo)) { - return 0; - } - -#if SIZEOF_OFF_T == 4 - pInfo->size_high = 0; -#else - pInfo->size_high = (Uint32)(statbuf.st_size >> 32); -#endif - pInfo->size_low = (Uint32)statbuf.st_size; - -#ifdef NO_ACCESS - /* Just look at read/write access for owner. */ - - pInfo->access = ((statbuf.st_mode >> 6) & 07) >> 1; - -#else - pInfo->access = FA_NONE; - if (access(name, R_OK) == 0) - pInfo->access |= FA_READ; - if (access(name, W_OK) == 0) - pInfo->access |= FA_WRITE; - -#endif - - if (ISDEV(statbuf)) - pInfo->type = FT_DEVICE; - else if (ISDIR(statbuf)) - pInfo->type = FT_DIRECTORY; - else if (ISREG(statbuf)) - pInfo->type = FT_REGULAR; - else if (ISLNK(statbuf)) - pInfo->type = FT_SYMLINK; - else - pInfo->type = FT_OTHER; - - pInfo->accessTime = statbuf.st_atime; - pInfo->modifyTime = statbuf.st_mtime; - pInfo->cTime = statbuf.st_ctime; - - pInfo->mode = statbuf.st_mode; - pInfo->links = statbuf.st_nlink; - pInfo->major_device = statbuf.st_dev; - pInfo->inode = statbuf.st_ino; - pInfo->uid = statbuf.st_uid; - pInfo->gid = statbuf.st_gid; - - return 1; -} - -/***************************************************************************/ - -int -efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name) -{ - /* - * On some systems chown will always fail for a non-root user unless - * POSIX_CHOWN_RESTRICTED is not set. Others will succeed as long as - * you don't try to chown a file to someone besides youself. - */ - if (pInfo->mode != -1) { - mode_t newMode = pInfo->mode & (S_ISUID | S_ISGID | - S_IRWXU | S_IRWXG | S_IRWXO); - if (chmod(name, newMode)) { - newMode &= ~(S_ISUID | S_ISGID); - if (chmod(name, newMode)) { - return check_error(-1, errInfo); - } - } - } - - return 1; -} - -/***************************************************************************/ - -int -efile_write(Efile_error* errInfo, /* Where to return error codes. */ - int flags, /* Flags given when file was - opened. */ - int fd, /* File descriptor to write to. */ - char* buf, /* Buffer to write. */ - size_t count) /* Number of bytes to write. */ -{ - ssize_t written; /* Bytes written in last operation. */ - struct fd_data *fd_data; - - if ((fd_data = l_find_local_fd(fd)) != NULL) { - if (L_FD_IS_VALID(fd_data)) { - /* we are beyond eof and need to pad*/ - if (l_pad_file(fd_data, L_FD_CUR(fd_data)) < 0) { - return check_error(-1, errInfo); - } - } - } - - while (count > 0) { - if ((written = write(fd, buf, count)) < 0) { - if (errno != EINTR) { - return check_error(-1, errInfo); - } - else { - written = 0; - } - } - ASSERT(written <= count); - buf += written; - count -= written; - } - return 1; -} - -/***************************************************************************/ - -int -efile_writev(Efile_error* errInfo, /* Where to return error codes */ - int flags, /* Flags given when file was - * opened */ - int fd, /* File descriptor to write to */ - SysIOVec* iov, /* Vector of buffer structs. - * The structs may be changed i.e. - * due to incomplete writes */ - int iovcnt) /* Number of structs in vector */ -{ - struct fd_data *fd_data; - int cnt = 0; /* Buffers so far written */ - - ASSERT(iovcnt >= 0); - if ((fd_data = l_find_local_fd(fd)) != NULL) { - if (L_FD_IS_VALID(fd_data)) { - /* we are beyond eof and need to pad*/ - if (l_pad_file(fd_data, L_FD_CUR(fd_data)) < 0) { - return check_error(-1, errInfo); - } - } - } - while (cnt < iovcnt) { - if ((! iov[cnt].iov_base) || (iov[cnt].iov_len <= 0)) { - /* Empty buffer - skip */ - cnt++; - } - else { /* Non-empty buffer */ - ssize_t w; /* Bytes written in this call */ - do { - w = write(fd, iov[cnt].iov_base, iov[cnt].iov_len); - } while (w < 0 && errno == EINTR); - - ASSERT(w <= iov[cnt].iov_len || w == -1); - - if (w < 0) { - return check_error(-1, errInfo); - } - /* Move forward to next buffer to write */ - for (; cnt < iovcnt && w > 0; cnt++) { - if (iov[cnt].iov_base && iov[cnt].iov_len > 0) { - if (w < iov[cnt].iov_len) { - /* Adjust the buffer for next write */ - iov[cnt].iov_len -= w; - iov[cnt].iov_base += w; - w = 0; - break; - } - else { - w -= iov[cnt].iov_len; - } - } - } - ASSERT(w == 0); - } /* else Non-empty buffer */ - } /* while (cnt< iovcnt) */ - return 1; -} - -/***************************************************************************/ - -int -efile_read(Efile_error* errInfo, /* Where to return error codes. */ - int flags, /* Flags given when file was opened. */ - int fd, /* File descriptor to read from. */ - char* buf, /* Buffer to read into. */ - size_t count, /* Number of bytes to read. */ - size_t *pBytesRead) /* Where to return number of - bytes read. */ -{ - ssize_t n; - struct fd_data *fd_data; - - if ((fd_data = l_find_local_fd(fd)) != NULL) { - if (L_FD_IS_VALID(fd_data)) { - *pBytesRead = 0; - return 1; - } - } - for (;;) { - if ((n = read(fd, buf, count)) >= 0) { - break; - } - else if (errno != EINTR) { - return check_error(-1, errInfo); - } - } - if (fd_data != NULL && L_FD_IS_VALID(fd_data)) { - L_FD_INVALIDATE(fd_data); - } - *pBytesRead = (size_t) n; - return 1; -} - -/* pread() and pwrite() */ -/* Some unix systems, notably Solaris has these syscalls */ -/* It is especially nice for i.e. the dets module to have support */ -/* for this, even if the underlying OS dosn't support it, it is */ -/* reasonably easy to work around by first calling seek, and then */ -/* calling read(). */ -/* This later strategy however changes the file pointer, which pread() */ -/* does not do. We choose to ignore this and say that the location */ -/* of the file pointer is undefined after a call to any of the p functions*/ - - -int -efile_pread(Efile_error* errInfo, /* Where to return error codes. */ - int fd, /* File descriptor to read from. */ - Sint64 offset, /* Offset in bytes from BOF. */ - char* buf, /* Buffer to read into. */ - size_t count, /* Number of bytes to read. */ - size_t *pBytesRead) /* Where to return - number of bytes read. */ -{ - int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL); - if (res) { - return efile_read(errInfo, 0, fd, buf, count, pBytesRead); - } else { - return res; - } -} - - -/***************************************************************************/ - -int -efile_pwrite(Efile_error* errInfo, /* Where to return error codes. */ - int fd, /* File descriptor to write to. */ - char* buf, /* Buffer to write. */ - size_t count, /* Number of bytes to write. */ - Sint64 offset) /* where to write it */ -{ - int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL); - - if (res) { - return efile_write(errInfo, 0, fd, buf, count); - } else { - return res; - } -} - -/***************************************************************************/ - -int -efile_seek(Efile_error* errInfo, /* Where to return error codes. */ - int fd, /* File descriptor to do the seek on. */ - Sint64 offset, /* Offset in bytes from the given - origin. */ - int origin, /* Origin of seek (SEEK_SET, SEEK_CUR, - SEEK_END). */ - Sint64 *new_location) /* Resulting new location in file. */ -{ - off_t off, result; - off = (off_t) offset; - - switch (origin) { - case EFILE_SEEK_SET: - origin = SEEK_SET; - break; - case EFILE_SEEK_CUR: - origin = SEEK_CUR; - break; - case EFILE_SEEK_END: - origin = SEEK_END; - break; - default: - errno = EINVAL; - return check_error(-1, errInfo); - } - - if (off != offset) { - errno = EINVAL; - return check_error(-1, errInfo); - } - - errno = 0; - result = lseek(fd, off, origin); - - if (result >= 0) { - l_invalidate_local_fd(fd); - } - - if (result < 0) - { - if (errno == ENOSYS) { - int size, cur_pos; - - if (off < 0) { - errno = EINVAL; - return check_error(-1, errInfo); - } - - cur_pos = lseek(fd, 0, SEEK_CUR); - size = lseek(fd, 0, SEEK_END); - - if (origin == SEEK_SET) { - result = offset; - } - else if (origin == SEEK_CUR) { - result = offset + cur_pos; - } - else if (origin == SEEK_END) { - result = size + offset; - } - - /* sanity check our result */ - if (size > result) { - return check_error(-1, errInfo); - } - - /* store the data localy */ - l_update_local_fd(fd, result, size); - - /* reset the original file position */ - if (origin != SEEK_END) { - lseek(fd, cur_pos, SEEK_SET); - } - } - else if (errno == 0) { - errno = EINVAL; - } - } - - if (new_location) { - *new_location = result; - } - - return 1; -} - -/***************************************************************************/ - -int -efile_truncate_file(Efile_error* errInfo, int *fd, int flags) -{ - off_t offset; - struct fd_data *fd_data; - - if ((fd_data = l_find_local_fd(*fd)) != NULL && L_FD_IS_VALID(fd_data)) { - offset = L_FD_CUR(fd_data); - } - else { - offset = lseek(*fd, 0, SEEK_CUR); - } - - return check_error(((offset >= 0) && - (ftruncate(*fd, offset) == 0)) ? 1 : -1, errInfo); -} - -/***************************************************************************/ - -int -efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size) -{ - errno = ENOTSUP; - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_altname(Efile_error* errInfo, char* name, char* buffer, size_t size) -{ - errno = ENOTSUP; - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_link(Efile_error* errInfo, char* old, char* new) -{ - errno = ENOTSUP; - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_symlink(Efile_error* errInfo, char* old, char* new) -{ - errno = ENOTSUP; - return check_error(-1, errInfo); -} - -/***************************************************************************/ - -int -efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset, - Sint64 length, int advise) -{ - return check_error(posix_fadvise(fd, offset, length, advise), errInfo); -} - -/***************************************************************************/ - -static int -call_posix_fallocate(int fd, Sint64 offset, Sint64 length) -{ - int ret; - - /* - * On Linux and Solaris for example, posix_fallocate() returns - * a positive error number on error and it does not set errno. - * On FreeBSD however (9.0 at least), it returns -1 on error - * and it sets errno. - */ - do { - ret = posix_fallocate(fd, (off_t) offset, (off_t) length); - if (ret > 0) { - errno = ret; - ret = -1; - } - } while (ret != 0 && errno == EINTR); - - return ret; -} - -/***************************************************************************/ - -int -efile_fallocate(Efile_error* errInfo, int fd, Sint64 offset, Sint64 length) -{ - return check_error(call_posix_fallocate(fd, offset, length), errInfo); -} diff --git a/erts/emulator/drivers/ose/ose_signal_drv.c b/erts/emulator/drivers/ose/ose_signal_drv.c deleted file mode 100644 index 2be9462a47..0000000000 --- a/erts/emulator/drivers/ose/ose_signal_drv.c +++ /dev/null @@ -1,897 +0,0 @@ -/* - * %CopyrightBegin% - * - * Copyright Ericsson AB 2013-2013. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - * %CopyrightEnd% - */ -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include "errno.h" -#include "stdio.h" -#include "string.h" -#include "stddef.h" - -#include "sys.h" -#include "erl_driver.h" -#include "ose.h" - - -#ifdef HAVE_OSE_SPI_H -#include "ose_spi/ose_spi.h" -#endif - -#define DEBUG_ATTACH 0 -#define DEBUG_HUNT 0 -#define DEBUG_SEND 0 -#define DEBUG_LISTEN 0 - -#if 0 -#define DEBUGP(FMT,...) printf(FMT, __VA_ARGS__) -#else -#define DEBUGP(FMT,...) -#endif - -#if DEBUG_ATTACH -#define DEBUGP_ATTACH(...) DEBUGP( __VA_ARGS__) -#else -#define DEBUGP_ATTACH(...) -#endif - -#if DEBUG_HUNT -#define DEBUGP_HUNT(...) DEBUGP( __VA_ARGS__) -#else -#define DEBUGP_HUNT(...) -#endif - -#if DEBUG_LISTEN -#define DEBUGP_LISTEN(...) DEBUGP( __VA_ARGS__) -#else -#define DEBUGP_LISTEN(...) -#endif - -#if DEBUG_SEND -#define DEBUGP_SEND(...) DEBUGP( __VA_ARGS__) -#else -#define DEBUGP_SEND(...) -#endif - - -#define DRIVER_NAME "ose_signal_drv" -#define GET_SPID 1 -#define GET_NAME 2 -#define HUNT 100 -#define DEHUNT 101 -#define ATTACH 102 -#define DETACH 103 -#define SEND 104 -#define SEND_W_S 105 -#define LISTEN 106 -#define OPEN 200 - -#define REF_SEGMENT_SIZE 8 - -struct async { - SIGSELECT signo; - ErlDrvTermData port; - ErlDrvTermData proc; - PROCESS spid; - PROCESS target; - Uint32 ref; -}; - -/** - * OSE signals - **/ -union SIGNAL { - SIGSELECT signo; - struct async async; -}; - -/** - * The driver's context - **/ -typedef struct _driver_context { - ErlDrvPort port; - PROCESS spid; - ErlDrvEvent perm_events[2]; - ErlDrvEvent *events; - Uint32 event_cnt; - Uint32 ref; - Uint32 *outstanding_refs; - Uint32 outstanding_refs_max; - Uint32 outstanding_refs_cnt; -} driver_context_t; - -/** - * Global variables - **/ -static ErlDrvTermData a_ok; -static ErlDrvTermData a_error; -static ErlDrvTermData a_enomem; -static ErlDrvTermData a_enoent; -static ErlDrvTermData a_badarg; -static ErlDrvTermData a_mailbox_up; -static ErlDrvTermData a_mailbox_down; -static ErlDrvTermData a_ose_drv_reply; -static ErlDrvTermData a_message; -static PROCESS proxy_proc; - - -/** - * Serialize/unserialize unsigned 32-bit values - **/ -static char *put_u32(unsigned int value, char *ptr) { - *ptr++ = (value & 0xff000000) >> 24; - *ptr++ = (value & 0x00ff0000) >> 16; - *ptr++ = (value & 0x0000ff00) >> 8; - *ptr++ = (value & 0xff); - - return ptr; -} - -static unsigned int get_u32(char *ptr) { - unsigned int result = 0; - result += (ptr[0] & 0xff) << 24; - result += (ptr[1] & 0xff) << 16; - result += (ptr[2] & 0xff) << 8; - result += (ptr[3] & 0xff); - - return result; -} - - -/* Stolen from efile_drv.c */ - -/* char EV_CHAR_P(ErlIOVec *ev, int p, int q) */ -#define EV_CHAR_P(ev, p, q) \ - (((char *)(ev)->iov[(q)].iov_base) + (p)) - -/* int EV_GET_CHAR(ErlIOVec *ev, char *p, int *pp, int *qp) */ -#define EV_GET_CHAR(ev, p, pp, qp) ev_get_char(ev, p ,pp, qp) -static int -ev_get_char(ErlIOVec *ev, char *p, int *pp, int *qp) { - if (*(pp)+1 <= (ev)->iov[*(qp)].iov_len) { - *(p) = *EV_CHAR_P(ev, *(pp), *(qp)); - if (*(pp)+1 < (ev)->iov[*(qp)].iov_len) - *(pp) = *(pp)+1; - else { - (*(qp))++; - *pp = 0; - } - return !0; - } - return 0; -} - -/* Uint32 EV_UINT32(ErlIOVec *ev, int p, int q)*/ -#define EV_UINT32(ev, p, q) \ - ((Uint32) *(((unsigned char *)(ev)->iov[(q)].iov_base) + (p))) - -/* int EV_GET_UINT32(ErlIOVec *ev, Uint32 *p, int *pp, int *qp) */ -#define EV_GET_UINT32(ev, p, pp, qp) ev_get_uint32(ev,(Uint32*)(p),pp,qp) -static int -ev_get_uint32(ErlIOVec *ev, Uint32 *p, int *pp, int *qp) { - if (*(pp)+4 <= (ev)->iov[*(qp)].iov_len) { - *(p) = (EV_UINT32(ev, *(pp), *(qp)) << 24) - | (EV_UINT32(ev, *(pp)+1, *(qp)) << 16) - | (EV_UINT32(ev, *(pp)+2, *(qp)) << 8) - | (EV_UINT32(ev, *(pp)+3, *(qp))); - if (*(pp)+4 < (ev)->iov[*(qp)].iov_len) - *(pp) = *(pp)+4; - else { - (*(qp))++; - *pp = 0; - } - return !0; - } - return 0; -} - -/** - * Convinience macros - **/ -#define send_response(port,output) erl_drv_send_term(driver_mk_port(port),\ - driver_caller(port), output, sizeof(output) / sizeof(output[0])); - -void iov_memcpy(void *dest,ErlIOVec *ev,int ind,int off); -void iov_memcpy(void *dest,ErlIOVec *ev,int ind,int off) { - int i; - memcpy(dest,ev->iov[ind].iov_base+off,ev->iov[ind].iov_len-off); - for (i = ind+1; i < ev->vsize; i++) - memcpy(dest,ev->iov[i].iov_base,ev->iov[i].iov_len); -} - -/** - * Reference handling - **/ - -static int add_reference(driver_context_t *ctxt, Uint32 ref) { - - /* - * Premature optimizations may be evil, but they sure are fun. - */ - - if (ctxt->outstanding_refs == NULL) { - /* First ref to be ignored */ - ctxt->outstanding_refs = driver_alloc(REF_SEGMENT_SIZE*sizeof(Uint32)); - if (!ctxt->outstanding_refs) - return 1; - - memset(ctxt->outstanding_refs,0,REF_SEGMENT_SIZE*sizeof(Uint32)); - ctxt->outstanding_refs_max += REF_SEGMENT_SIZE; - ctxt->outstanding_refs[ctxt->outstanding_refs_cnt++] = ref; - } else if (ctxt->outstanding_refs_cnt == ctxt->outstanding_refs_max) { - /* Expand ref array */ - Uint32 *new_array; - ctxt->outstanding_refs_max += REF_SEGMENT_SIZE; - new_array = driver_realloc(ctxt->outstanding_refs, - ctxt->outstanding_refs_max*sizeof(Uint32)); - - if (!new_array) { - ctxt->outstanding_refs_max -= REF_SEGMENT_SIZE; - return 1; - } - - ctxt->outstanding_refs = new_array; - - memset(ctxt->outstanding_refs+ctxt->outstanding_refs_cnt,0, - REF_SEGMENT_SIZE*sizeof(Uint32)); - ctxt->outstanding_refs[ctxt->outstanding_refs_cnt++] = ref; - - } else { - /* Find an empty slot: - * First we try current index, - * then we scan for a slot. - */ - if (!ctxt->outstanding_refs[ctxt->outstanding_refs_cnt]) { - ctxt->outstanding_refs[ctxt->outstanding_refs_cnt++] = ref; - } else { - int i; - ASSERT(ctxt->outstanding_refs_cnt < ctxt->outstanding_refs_max); - for (i = 0; i < ctxt->outstanding_refs_max; i++) - if (!ctxt->outstanding_refs[i]) - break; - ASSERT(ctxt->outstanding_refs[i] == 0); - ctxt->outstanding_refs[i] = ref; - ctxt->outstanding_refs_cnt++; - } - } - return 0; -} - -/* Return 0 if removed, 1 if does not exist, */ -static int remove_reference(driver_context_t *ctxt, Uint32 ref) { - int i,j; - - if (ctxt->outstanding_refs_max == 0 && ctxt->outstanding_refs_cnt == 0) { - ASSERT(ctxt->outstanding_refs == NULL); - return 1; - } - - for (i = 0; i < ctxt->outstanding_refs_max; i++) { - if (ctxt->outstanding_refs[i] == ref) { - ctxt->outstanding_refs[i] = 0; - ctxt->outstanding_refs_cnt--; - i = -1; - break; - } - } - - if (i != -1) - return 1; - - if (ctxt->outstanding_refs_cnt == 0) { - driver_free(ctxt->outstanding_refs); - ctxt->outstanding_refs = NULL; - ctxt->outstanding_refs_max = 0; - } else if (ctxt->outstanding_refs_cnt == (ctxt->outstanding_refs_max - REF_SEGMENT_SIZE)) { - Uint32 *new_array; - for (i = 0, j = 0; i < ctxt->outstanding_refs_cnt; i++) { - if (ctxt->outstanding_refs[i] == 0) { - for (j = i+1; j < ctxt->outstanding_refs_max; j++) - if (ctxt->outstanding_refs[j]) { - ctxt->outstanding_refs[i] = ctxt->outstanding_refs[j]; - ctxt->outstanding_refs[j] = 0; - break; - } - } - } - ctxt->outstanding_refs_max -= REF_SEGMENT_SIZE; - new_array = driver_realloc(ctxt->outstanding_refs, - ctxt->outstanding_refs_max*sizeof(Uint32)); - if (!new_array) { - ctxt->outstanding_refs_max += REF_SEGMENT_SIZE; - return 2; - } - - ctxt->outstanding_refs = new_array; - - } - - return 0; -} - -/** - * The OSE proxy process. This only handles ERTS_SIGNAL_OSE_DRV_ATTACH. - * The process is needed because signals triggered by attach ignore - * redir tables. - * - * We have one global proxy process to save memory. An attempt to make each - * port phantom into a proxy was made, but that used way to much memory. - */ -static OS_PROCESS(driver_proxy_process) { - SIGSELECT sigs[] = {1,ERTS_SIGNAL_OSE_DRV_ATTACH}; - PROCESS master = 0; - - while (1) { - union SIGNAL *sig = receive(sigs); - - if (sig->signo == ERTS_SIGNAL_OSE_DRV_ATTACH) { - - /* The first message is used to determine who to send messages to. */ - if (master == 0) - master = sender(&sig); - - if (sig->async.target == 0) { - PROCESS from = sender(&sig); - restore(sig); - DEBUGP_ATTACH("0x%x: got attach 0x%x, sending to 0x%x\n", - current_process(),from,master); - sig->async.target = from; - send(&sig,master); - } else { - PROCESS target = sig->async.target; - restore(sig); - sig->async.target = 0; - DEBUGP_ATTACH("0x%x: doing attach on 0x%x\n",current_process(),target); - attach(&sig,target); - } - } - } -} - - -/** - * Init routine for the driver - **/ -static int drv_init(void) { - - a_ok = driver_mk_atom("ok"); - a_error = driver_mk_atom("error"); - a_enomem = driver_mk_atom("enomem"); - a_enoent = driver_mk_atom("enoent"); - a_badarg = driver_mk_atom("badarg"); - a_mailbox_up = driver_mk_atom("mailbox_up"); - a_mailbox_down = driver_mk_atom("mailbox_down"); - a_ose_drv_reply = driver_mk_atom("ose_drv_reply"); - a_message = driver_mk_atom("message"); - - proxy_proc = create_process(get_ptype(current_process()), - "ose_signal_driver_proxy", - driver_proxy_process, 10000, - get_pri(current_process()), - 0, 0, NULL, 0, 0); - -#ifdef DEBUG - efs_clone(proxy_proc); -#endif - start(proxy_proc); - - return 0; -} - -/* Signal resolution callback */ -static ErlDrvOseEventId resolve_signal(union SIGNAL* osig) { - union SIGNAL *sig = osig; - if (sig->signo == ERTS_SIGNAL_OSE_DRV_HUNT || - sig->signo == ERTS_SIGNAL_OSE_DRV_ATTACH) { - return sig->async.spid; - } - DEBUGP("%p: Got signal %d sent to %p from 0x%p\n", - current_process(),sig->signo,addressee(&sig),sender(&sig)); - return addressee(&sig); -} - - -/** - * Start routine for the driver - **/ -static ErlDrvData drv_start(ErlDrvPort port, char *command) -{ - driver_context_t *ctxt = driver_alloc(sizeof(driver_context_t)); - - ctxt->perm_events[0] = NULL; - ctxt->perm_events[1] = NULL; - - ctxt->spid = 0; - ctxt->port = port; - ctxt->event_cnt = 0; - ctxt->events = NULL; - ctxt->ref = 0; - ctxt->outstanding_refs = NULL; - ctxt->outstanding_refs_max = 0; - ctxt->outstanding_refs_cnt = 0; - - - /* Set the communication protocol to Erlang to be binary */ - set_port_control_flags(port, PORT_CONTROL_FLAG_BINARY); - - /* Everything ok */ - return (ErlDrvData)ctxt; -} - -/** - * Stop routine for the driver - **/ -static void drv_stop(ErlDrvData driver_data) -{ - driver_context_t *ctxt = (driver_context_t *)driver_data; - int i; - - /* HUNT + ATTACH */ - if (ctxt->perm_events[0]) - driver_select(ctxt->port, ctxt->perm_events[0], - ERL_DRV_USE|ERL_DRV_READ, 0); - if (ctxt->perm_events[1]) - driver_select(ctxt->port, ctxt->perm_events[1], - ERL_DRV_USE|ERL_DRV_READ, 0); - - for (i = 0; i < ctxt->event_cnt; i++) { - driver_select(ctxt->port, ctxt->events[i], ERL_DRV_USE|ERL_DRV_READ, 0); - } - - if (ctxt->spid != 0) - kill_proc(ctxt->spid); - DEBUGP("0x%x: stopped\n",ctxt->spid); - if (ctxt->events) - driver_free(ctxt->events); - if (ctxt->outstanding_refs) - driver_free(ctxt->outstanding_refs); - - driver_free(ctxt); -} - -/** - * Output from Erlang - **/ -static void outputv(ErlDrvData driver_data, ErlIOVec *ev) -{ - driver_context_t *ctxt = (driver_context_t *)driver_data; - int p = 0, q = 1; - char cmd; - - if (! EV_GET_CHAR(ev,&cmd,&p,&q)) { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_badarg, - ERL_DRV_TUPLE, 3}; - send_response(ctxt->port, output); - return; - } - - /* Command is in the buffer's first byte */ - switch(cmd) { - - case OPEN: { - char *name = driver_alloc(ev->size - 1+1); - struct OS_redir_entry redir[2]; - - redir[0].sig = 1; - redir[0].pid = current_process(); - - iov_memcpy(name,ev,q,p); - name[ev->size-1] = '\0'; - - ctxt->spid = create_process(OS_PHANTOM, name, NULL, 0, - 0, 0, 0, redir, 0, 0); - - DEBUGP("0x%x: open\n",ctxt->spid); - - ctxt->perm_events[1] = - erl_drv_ose_event_alloc(ERTS_SIGNAL_OSE_DRV_ATTACH,(int)ctxt->spid, - resolve_signal, NULL); - driver_select(ctxt->port,ctxt->perm_events[1],ERL_DRV_READ|ERL_DRV_USE,1); - - ctxt->perm_events[0] = - erl_drv_ose_event_alloc(ERTS_SIGNAL_OSE_DRV_HUNT,(int)ctxt->spid, - resolve_signal, NULL); - driver_select(ctxt->port,ctxt->perm_events[0],ERL_DRV_READ|ERL_DRV_USE,1); - - start(ctxt->spid); - - { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_ok, - ERL_DRV_TUPLE, 3}; - - send_response(ctxt->port, output); - } - - break; - - } - - case ATTACH: - case HUNT: - { - union SIGNAL *sig = alloc(sizeof(union SIGNAL), - cmd == HUNT ? ERTS_SIGNAL_OSE_DRV_HUNT:ERTS_SIGNAL_OSE_DRV_ATTACH); - - sig->async.port = driver_mk_port(ctxt->port); - sig->async.proc = driver_caller(ctxt->port); - sig->async.spid = ctxt->spid; - sig->async.ref = ++ctxt->ref; - - if (add_reference(ctxt,ctxt->ref)) { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_enomem, - ERL_DRV_TUPLE, 3}; - send_response(ctxt->port, output); - free_buf(&sig); - } else { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_INT, (ErlDrvUInt)ctxt->ref, - ERL_DRV_TUPLE, 2, - ERL_DRV_TUPLE, 3}; - send_response(ctxt->port, output); - - if (cmd == HUNT) { - char *huntname = driver_alloc(sizeof(char)*((ev->size-1)+1)); - - iov_memcpy(huntname,ev,q,p); - huntname[ev->size-1] = '\0'; - - DEBUGP_HUNT("0x%x: hunt %s -> %u (%u,%u)\n", - ctxt->spid,huntname,ctxt->ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - - hunt(huntname, 0, NULL, &sig); - - driver_free(huntname); - } else { - EV_GET_UINT32(ev,&sig->async.target,&p,&q); - DEBUGP_ATTACH("0x%x: attach %u -> %u (%u,%u)\n", - ctxt->spid,sig->async.target, - ctxt->ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - - send(&sig,proxy_proc); - } - - } - - break; - } - - case DETACH: - case DEHUNT: - { - - Uint32 ref; - - EV_GET_UINT32(ev,&ref,&p,&q); - if (cmd == DETACH) { - DEBUGP_ATTACH("0x%x: detach %u (%u,%u)\n",ctxt->spid,ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - } else { - DEBUGP_HUNT("0x%x: dehunt %u (%u,%u)\n",ctxt->spid,ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - } - - if (remove_reference(ctxt,ref)) { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_error, - ERL_DRV_ATOM, a_enoent, - ERL_DRV_TUPLE, 2, - ERL_DRV_TUPLE, 3}; - - send_response(ctxt->port, output); - } else { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_ok, - ERL_DRV_TUPLE, 3}; - - send_response(ctxt->port, output); - } - - break; - } - - case SEND: - case SEND_W_S: - { - PROCESS spid; - PROCESS sender; - SIGSELECT signo; - OSBUFSIZE size = ev->size-9; - union SIGNAL *sig; - - EV_GET_UINT32(ev,&spid,&p,&q); - - if (cmd == SEND_W_S) { - EV_GET_UINT32(ev,&sender,&p,&q); - size -= 4; - } else { - sender = ctxt->spid; - } - - EV_GET_UINT32(ev,&signo,&p,&q); - - sig = alloc(size + sizeof(SIGSELECT),signo); - - if (cmd == SEND_W_S) { - DEBUGP_SEND("0x%x: send_w_s(%u,%u,%u)\n",ctxt->spid,spid,signo,sender); - } else { - DEBUGP_SEND("0x%x: send(%u,%u)\n",ctxt->spid,spid,signo); - } - - iov_memcpy(((char *)&sig->signo) + sizeof(SIGSELECT),ev,q,p); - - send_w_s(&sig, sender, spid); - - break; - } - - case LISTEN: - { - int i,j,event_cnt = (ev->size - 1)/4; - ErlDrvEvent *events = NULL; - SIGSELECT signo,tmp_signo; - - if (event_cnt == 0) { - for (i = 0; i < ctxt->event_cnt; i++) - driver_select(ctxt->port,ctxt->events[i],ERL_DRV_READ|ERL_DRV_USE,0); - if (ctxt->events) - driver_free(ctxt->events); - } else { - events = driver_alloc(sizeof(ErlDrvEvent)*event_cnt); - EV_GET_UINT32(ev,&signo,&p,&q); - for (i = 0, j = 0; i < event_cnt || j < ctxt->event_cnt; ) { - - if (ctxt->events) - erl_drv_ose_event_fetch(ctxt->events[j],&tmp_signo,NULL,NULL); - - if (signo == tmp_signo) { - events[i++] = ctxt->events[j++]; - EV_GET_UINT32(ev,&signo,&p,&q); - } else if (signo < tmp_signo || !ctxt->events) { - /* New signal to select on */ - events[i] = erl_drv_ose_event_alloc(signo,(int)ctxt->spid, - resolve_signal, NULL); - driver_select(ctxt->port,events[i++],ERL_DRV_READ|ERL_DRV_USE,1); - EV_GET_UINT32(ev,&signo,&p,&q); - } else { - /* Remove old signal to select on */ - driver_select(ctxt->port,ctxt->events[j++],ERL_DRV_READ|ERL_DRV_USE,0); - } - } - if (ctxt->events) - driver_free(ctxt->events); - } - ctxt->events = events; - ctxt->event_cnt = event_cnt; - - { - ErlDrvTermData output[] = { - ERL_DRV_ATOM, a_ose_drv_reply, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_ATOM, a_ok, - ERL_DRV_TUPLE, 3}; - send_response(ctxt->port, output); - } - break; - } - - default: - { - DEBUGP("Warning: 'ose_signal_drv' unknown command '%d'\n", cmd); - break; - } - } -} - -/** - * Handler for when OSE signal arrives - **/ -static void ready_input(ErlDrvData driver_data, ErlDrvEvent event) -{ - driver_context_t *ctxt = (driver_context_t *)driver_data; - union SIGNAL *sig = erl_drv_ose_get_signal(event); - - while (sig != NULL) { - - switch(sig->signo) - { - /* Remote process is available */ - case ERTS_SIGNAL_OSE_DRV_HUNT: - { - const PROCESS spid = sender(&sig); - - if (remove_reference(ctxt,sig->async.ref)) { - DEBUGP_HUNT("0x%x: Got hunt from 0x%x -> %u (CANCELLED) (%u,%u)\n", - ctxt->spid,spid,sig->async.ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - /* Already removed by dehunt */ - } else { - ErlDrvTermData reply[] = { - ERL_DRV_ATOM, a_mailbox_up, - ERL_DRV_PORT, sig->async.port, - ERL_DRV_PORT, sig->async.port, - ERL_DRV_UINT, (ErlDrvUInt)sig->async.ref, - ERL_DRV_TUPLE, 2, - ERL_DRV_UINT, (ErlDrvUInt)spid, - ERL_DRV_TUPLE, 4}; - DEBUGP_HUNT("0x%x: Got hunt from 0x%x -> %u (%u,%u)\n", - ctxt->spid,spid,sig->async.ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - erl_drv_send_term(sig->async.port, sig->async.proc, reply, - sizeof(reply) / sizeof(reply[0])); - } - break; - } - - /* Remote process is down */ - case ERTS_SIGNAL_OSE_DRV_ATTACH: - { - PROCESS spid = sig->async.target; - - if (remove_reference(ctxt,sig->async.ref)) { - DEBUGP_ATTACH("0x%x: Got attach from 0x%x -> %u (CANCELLED) (%u,%u)\n", - ctxt->spid,spid,sig->async.ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - /* Already removed by detach */ - } else { - ErlDrvTermData reply[] = { - ERL_DRV_ATOM, a_mailbox_down, - ERL_DRV_PORT, sig->async.port, - ERL_DRV_PORT, sig->async.port, - ERL_DRV_UINT, sig->async.ref, - ERL_DRV_TUPLE, 2, - ERL_DRV_UINT, (ErlDrvUInt)spid, - ERL_DRV_TUPLE, 4}; - DEBUGP_ATTACH("0x%x: Got attach from 0x%x -> %u (%u,%u)\n", - ctxt->spid,spid,sig->async.ref, - ctxt->outstanding_refs_cnt, - ctxt->outstanding_refs_max); - erl_drv_send_term(sig->async.port, sig->async.proc, reply, - sizeof(reply) / sizeof(reply[0])); - } - break; - } - - /* Received user defined signal */ - default: - { - const PROCESS spid = sender(&sig); - const OSBUFSIZE size = sigsize(&sig) - sizeof(SIGSELECT); - const char *sig_data = ((char *)&sig->signo) + sizeof(SIGSELECT); - - ErlDrvTermData reply[] = { - ERL_DRV_ATOM, a_message, - ERL_DRV_PORT, driver_mk_port(ctxt->port), - ERL_DRV_UINT, (ErlDrvUInt)spid, - ERL_DRV_UINT, (ErlDrvUInt)ctxt->spid, - ERL_DRV_UINT, (ErlDrvUInt)sig->signo, - ERL_DRV_BUF2BINARY, (ErlDrvTermData)sig_data, (ErlDrvUInt)size, - ERL_DRV_TUPLE, 4, - ERL_DRV_TUPLE, 3}; - - DEBUGP_SEND("0x%x: Got 0x%u\r\n", spid, sig->signo); - - erl_drv_output_term(driver_mk_port(ctxt->port), reply, - sizeof(reply) / sizeof(reply[0])); - break; - } - } - - free_buf(&sig); - sig = erl_drv_ose_get_signal(event); - } -} - -/** - * Handler for 'port_control' - **/ -static ErlDrvSSizeT control(ErlDrvData driver_data, unsigned int cmd, - char *buf, ErlDrvSizeT len, - char **rbuf, ErlDrvSizeT rlen) -{ - driver_context_t *ctxt = (driver_context_t *)driver_data; - - switch(cmd) - { - case GET_SPID: - { - const PROCESS spid = ctxt->spid; - put_u32(spid, *rbuf); - return sizeof(PROCESS); - } - -#ifdef HAVE_OSE_SPI_H - case GET_NAME: - { - const PROCESS spid = get_u32(buf); - char *name = (char*)get_pid_info(spid,OSE_PI_NAME); - int n; - if (!name) { - *rbuf = NULL; - return 0; - } - - if (rlen < (n = strlen(name))) { - ErlDrvBinary *bin = driver_alloc_binary(n); - strncpy(bin->orig_bytes,name,n); - *rbuf = (char*)bin; - } else - strncpy(*rbuf,name,n); - free_buf((union SIGNAL**)&name); - - return n; - } -#endif - default: - { - /* Unknown command */ - return (ErlDrvSSizeT)ERL_DRV_ERROR_GENERAL; - break; - } - } -} - -static void stop_select(ErlDrvEvent event, void *reserved) -{ - erl_drv_ose_event_free(event); -} - -/** - * Setup the driver entry for the Erlang runtime - **/ -ErlDrvEntry ose_signal_driver_entry = { - .init = drv_init, - .start = drv_start, - .stop = drv_stop, - .outputv = outputv, - .ready_input = ready_input, - .driver_name = DRIVER_NAME, - .control = control, - .extended_marker = ERL_DRV_EXTENDED_MARKER, - .major_version = ERL_DRV_EXTENDED_MAJOR_VERSION, - .minor_version = ERL_DRV_EXTENDED_MINOR_VERSION, - .driver_flags = ERL_DRV_FLAG_USE_PORT_LOCKING, - .stop_select = stop_select -}; - diff --git a/erts/emulator/drivers/ose/ttsl_drv.c b/erts/emulator/drivers/ose/ttsl_drv.c deleted file mode 100644 index f759b47984..0000000000 --- a/erts/emulator/drivers/ose/ttsl_drv.c +++ /dev/null @@ -1,69 +0,0 @@ -/* - * %CopyrightBegin% - * - * Copyright Ericsson AB 1996-2013. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - * %CopyrightEnd% - */ -/* - * Stub tty driver because group/user depend on this. - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include "erl_driver.h" - -static int ttysl_init(void); -static ErlDrvData ttysl_start(ErlDrvPort, char*); - -/* Define the driver table entry. */ -struct erl_drv_entry ttsl_driver_entry = { - ttysl_init, - ttysl_start, - NULL, - NULL, - NULL, - NULL, - "tty_sl", - NULL, - NULL, - NULL, - NULL, /* timeout */ - NULL, /* outputv */ - NULL, /* ready_async */ - NULL, /* flush */ - NULL, /* call */ - NULL, /* event */ - ERL_DRV_EXTENDED_MARKER, - ERL_DRV_EXTENDED_MAJOR_VERSION, - ERL_DRV_EXTENDED_MINOR_VERSION, - 0, /* ERL_DRV_FLAGs */ - NULL, - NULL, /* process_exit */ - NULL -}; - - -static int ttysl_init(void) -{ - return 0; -} - -static ErlDrvData ttysl_start(ErlDrvPort port, char* buf) -{ - return ERL_DRV_ERROR_GENERAL; -} |