diff options
Diffstat (limited to 'erts/emulator/drivers/unix/unix_efile.c')
| -rw-r--r-- | erts/emulator/drivers/unix/unix_efile.c | 155 |
1 files changed, 95 insertions, 60 deletions
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c index 4b3934657c..d2d8713c1e 100644 --- a/erts/emulator/drivers/unix/unix_efile.c +++ b/erts/emulator/drivers/unix/unix_efile.c @@ -33,6 +33,9 @@ #include <sys/types.h> #include <sys/uio.h> #endif +#if defined(HAVE_SENDFILE) && (defined(__linux__) || (defined(__sun) && defined(__SVR4))) +#include <sys/sendfile.h> +#endif #if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__) #define DARWIN 1 @@ -813,7 +816,6 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, char* name, int info_for_link) { struct stat statbuf; /* Information about the file */ - struct tm *timep; /* Broken-apart filetime. */ int result; #ifdef VXWORKS @@ -880,40 +882,17 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, else pInfo->type = FT_OTHER; -#if defined(HAVE_LOCALTIME_R) || defined(VXWORKS) - { - /* Use the reentrant version of localtime() */ - static struct tm local_tm; -#define localtime(a) (localtime_r((a), &local_tm), &local_tm) -#endif - + pInfo->accessTime = statbuf.st_atime; + pInfo->modifyTime = statbuf.st_mtime; + pInfo->cTime = statbuf.st_ctime; -#define GET_TIME(dst, src) \ - timep = localtime(&statbuf.src); \ - (dst).year = timep->tm_year+1900; \ - (dst).month = timep->tm_mon+1; \ - (dst).day = timep->tm_mday; \ - (dst).hour = timep->tm_hour; \ - (dst).minute = timep->tm_min; \ - (dst).second = timep->tm_sec - - GET_TIME(pInfo->accessTime, st_atime); - GET_TIME(pInfo->modifyTime, st_mtime); - GET_TIME(pInfo->cTime, st_ctime); - -#undef GET_TIME - -#if defined(HAVE_LOCALTIME_R) || defined(VXWORKS) - } -#endif - - pInfo->mode = statbuf.st_mode; - pInfo->links = statbuf.st_nlink; + pInfo->mode = statbuf.st_mode; + pInfo->links = statbuf.st_nlink; pInfo->major_device = statbuf.st_dev; pInfo->minor_device = statbuf.st_rdev; - pInfo->inode = statbuf.st_ino; - pInfo->uid = statbuf.st_uid; - pInfo->gid = statbuf.st_gid; + pInfo->inode = statbuf.st_ino; + pInfo->uid = statbuf.st_uid; + pInfo->gid = statbuf.st_gid; return 1; } @@ -921,6 +900,8 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, int efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name) { + struct utimbuf tval; + CHECK_PATHLEN(name, errInfo); #ifdef VXWORKS @@ -973,38 +954,18 @@ efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name) #endif /* !VXWORKS */ - if (pInfo->accessTime.year != -1 && pInfo->modifyTime.year != -1) { - struct utimbuf tval; - struct tm timebuf; - -#define MKTIME(tb, ts) \ - timebuf.tm_year = ts.year-1900; \ - timebuf.tm_mon = ts.month-1; \ - timebuf.tm_mday = ts.day; \ - timebuf.tm_hour = ts.hour; \ - timebuf.tm_min = ts.minute; \ - timebuf.tm_sec = ts.second; \ - timebuf.tm_isdst = -1; \ - if ((tb = mktime(&timebuf)) == (time_t) -1) { \ - errno = EINVAL; \ - return check_error(-1, errInfo); \ - } + tval.actime = pInfo->accessTime; + tval.modtime = pInfo->modifyTime; - MKTIME(tval.actime, pInfo->accessTime); - MKTIME(tval.modtime, pInfo->modifyTime); -#undef MKTIME - #ifdef VXWORKS - /* VxWorks' utime doesn't work when the file is a nfs mounted - * one, don't report error if utime fails. - */ - utime(name, &tval); - return 1; + /* VxWorks' utime doesn't work when the file is a nfs mounted + * one, don't report error if utime fails. + */ + utime(name, &tval); + return 1; #else - return check_error(utime(name, &tval), errInfo); + return check_error(utime(name, &tval), errInfo); #endif - } - return 1; } @@ -1464,3 +1425,77 @@ efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset, return check_error(0, errInfo); #endif } + +#ifdef HAVE_SENDFILE +#define SENDFILE_CHUNK_SIZE ((1 << 30) -1) + +/* + * sendfile: The implementation of the sendfile system call varies + * a lot on different *nix platforms so to make the api similar in all + * we have to emulate some things in linux and play with variables on + * bsd/darwin. + * + * It could be possible to implement header/trailer in sendfile, though + * you would have to emulate it in linux and on BSD/Darwin some complex + * calculations have to be made when using a non blocking socket to figure + * out how much of the header/file/trailer was sent in each command. + */ + +int +efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd, + off_t *offset, Uint64 *nbytes, struct t_sendfile_hdtl* hdtl) +{ + Uint64 written = 0; +#if defined(__linux__) || (defined(__sun) && defined(__SVR4)) + ssize_t retval; + do { + // check if *nbytes is 0 or greater than the largest size_t + if (*nbytes == 0 || *nbytes > SENDFILE_CHUNK_SIZE) + retval = sendfile(out_fd, in_fd, offset, SENDFILE_CHUNK_SIZE); + else + retval = sendfile(out_fd, in_fd, offset, *nbytes); + if (retval > 0) { + written += retval; + *nbytes -= retval; + } + } while (retval != -1 && retval == SENDFILE_CHUNK_SIZE); + *nbytes = written; + return check_error(retval == -1 ? -1 : 0, errInfo); +#elif defined(DARWIN) + int retval; + off_t len; + do { + // check if *nbytes is 0 or greater than the largest off_t + if(*nbytes > SENDFILE_CHUNK_SIZE) + len = SENDFILE_CHUNK_SIZE; + else + len = *nbytes; + retval = sendfile(in_fd, out_fd, *offset, &len, NULL, 0); + if (retval != -1 || errno == EAGAIN || errno == EINTR) { + *offset += len; + *nbytes -= len; + written += len; + } + } while (len == SENDFILE_CHUNK_SIZE); + *nbytes = written; + return check_error(retval, errInfo); +#elif defined(__FreeBSD__) || defined(__DragonFly__) + off_t len; + int retval; + do { + if (*nbytes > SENDFILE_CHUNK_SIZE) + retval = sendfile(in_fd, out_fd, *offset, SENDFILE_CHUNK_SIZE, + NULL, &len, 0); + else + retval = sendfile(in_fd, out_fd, *offset, *nbytes, NULL, &len, 0); + if (retval != -1 || errno == EAGAIN || errno == EINTR) { + *offset += len; + *nbytes -= len; + written += len; + } + } while(len == SENDFILE_CHUNK_SIZE); + *nbytes = written; + return check_error(retval, errInfo); +#endif +} +#endif /* HAVE_SENDFILE */ |