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Diffstat (limited to 'erts/emulator/drivers/unix/unix_efile.c')
-rw-r--r--erts/emulator/drivers/unix/unix_efile.c146
1 files changed, 85 insertions, 61 deletions
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c
index 06ba986044..f8341f788a 100644
--- a/erts/emulator/drivers/unix/unix_efile.c
+++ b/erts/emulator/drivers/unix/unix_efile.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2013. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2017. 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.
@@ -39,16 +39,21 @@
#ifdef HAVE_SYS_UIO_H
#include <sys/types.h>
#include <sys/uio.h>
+#if defined(HAVE_SENDFILE) && (defined(__FreeBSD__) || defined(__DragonFly__))
+/* Need to define __BSD_VISIBLE in order to expose prototype of sendfile */
+#define __BSD_VISIBLE 1
+#include <sys/socket.h>
+#endif
#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
+#define __DARWIN__ 1
#endif
-#if defined(DARWIN) || defined(HAVE_LINUX_FALLOC_H) || defined(HAVE_POSIX_FALLOCATE)
+#if defined(__DARWIN__) || defined(HAVE_LINUX_FALLOC_H) || defined(HAVE_POSIX_FALLOCATE)
#include <fcntl.h>
#endif
@@ -74,11 +79,10 @@
* 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)
+#define ISDIR(st) (S_ISDIR((st).st_mode))
+#define ISREG(st) (S_ISREG((st).st_mode))
+#define ISDEV(st) (S_ISCHR((st).st_mode) || S_ISBLK((st).st_mode))
+#define ISLNK(st) (S_ISLNK((st).st_mode))
#ifdef NO_UMASK
#define FILE_MODE 0644
#define DIR_MODE 0755
@@ -361,33 +365,6 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
int fd;
int mode; /* Open mode. */
- if (stat(name, &statbuf) < 0) {
- /* statbuf is undefined: if the caller depends on it,
- i.e. invoke_read_file(), fail the call immediately */
- if (pSize && flags == EFILE_MODE_READ)
- return check_error(-1, errInfo);
- } else if (!ISREG(statbuf)) {
- /*
- * For UNIX only, here is some ugly code to allow
- * /dev/null to be opened as a file.
- *
- * Assumption: The i-node number for /dev/null cannot be zero.
- */
- static ino_t dev_null_ino = 0;
-
- if (dev_null_ino == 0) {
- struct stat nullstatbuf;
-
- if (stat("/dev/null", &nullstatbuf) >= 0) {
- dev_null_ino = nullstatbuf.st_ino;
- }
- }
- if (!(dev_null_ino && statbuf.st_ino == dev_null_ino)) {
- errno = EISDIR;
- return check_error(-1, errInfo);
- }
- }
-
switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) {
case EFILE_MODE_READ:
mode = O_RDONLY;
@@ -406,16 +383,13 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
return check_error(-1, errInfo);
}
-
if (flags & EFILE_MODE_APPEND) {
mode &= ~O_TRUNC;
mode |= O_APPEND;
}
-
if (flags & EFILE_MODE_EXCL) {
mode |= O_EXCL;
}
-
if (flags & EFILE_MODE_SYNC) {
#ifdef O_SYNC
mode |= O_SYNC;
@@ -425,15 +399,52 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
#endif
}
- fd = open(name, mode, FILE_MODE);
+#ifdef HAVE_FSTAT
+ while (((fd = open(name, mode, FILE_MODE)) < 0) && (errno == EINTR));
+ if (!check_error(fd, errInfo)) return 0;
+#endif
- if (!check_error(fd, errInfo))
- return 0;
+ if (
+#ifdef HAVE_FSTAT
+ fstat(fd, &statbuf) < 0
+#else
+ stat(name, &statbuf) < 0
+#endif
+ ) {
+ /* statbuf is undefined: if the caller depends on it,
+ i.e. invoke_read_file(), fail the call immediately */
+ if (pSize && flags == EFILE_MODE_READ) {
+ check_error(-1, errInfo);
+#ifdef HAVE_FSTAT
+ efile_closefile(fd);
+#endif
+ return 0;
+ }
+ }
+ else if (! ISREG(statbuf)) {
+ struct stat nullstatbuf;
+ /*
+ * For UNIX only, here is some ugly code to allow
+ * /dev/null to be opened as a file.
+ */
+ if ( (stat("/dev/null", &nullstatbuf) < 0)
+ || (statbuf.st_ino != nullstatbuf.st_ino)
+ || (statbuf.st_dev != nullstatbuf.st_dev) ) {
+#ifdef HAVE_FSTAT
+ efile_closefile(fd);
+#endif
+ errno = EISDIR;
+ return check_error(-1, errInfo);
+ }
+ }
+
+#ifndef HAVE_FSTAT
+ while (((fd = open(name, mode, FILE_MODE)) < 0) && (errno == EINTR));
+ if (!check_error(fd, errInfo)) return 0;
+#endif
*pfd = fd;
- if (pSize) {
- *pSize = statbuf.st_size;
- }
+ if (pSize) *pSize = statbuf.st_size;
return 1;
}
@@ -455,14 +466,14 @@ efile_may_openfile(Efile_error* errInfo, char *name) {
void
efile_closefile(int fd)
{
- close(fd);
+ while((close(fd) < 0) && (errno == EINTR));
}
int
efile_fdatasync(Efile_error *errInfo, /* Where to return error codes. */
int fd) /* File descriptor for file to sync data. */
{
-#ifdef HAVE_FDATASYNC
+#if defined(HAVE_FDATASYNC) && !defined(__DARWIN__)
return check_error(fdatasync(fd), errInfo);
#else
return efile_fsync(errInfo, fd);
@@ -476,11 +487,11 @@ efile_fsync(Efile_error *errInfo, /* Where to return error codes. */
#ifdef NO_FSYNC
undefined fsync /* XXX: Really? */
#else
-#if defined(DARWIN) && defined(F_FULLFSYNC)
+#if defined(__DARWIN__) && defined(F_FULLFSYNC)
return check_error(fcntl(fd, F_FULLFSYNC), errInfo);
#else
return check_error(fsync(fd), errInfo);
-#endif /* DARWIN */
+#endif /* __DARWIN__ */
#endif /* NO_FSYNC */
}
@@ -532,9 +543,9 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
else
pInfo->type = FT_OTHER;
- pInfo->accessTime = statbuf.st_atime;
- pInfo->modifyTime = statbuf.st_mtime;
- pInfo->cTime = statbuf.st_ctime;
+ pInfo->accessTime = (Sint64)statbuf.st_atime;
+ pInfo->modifyTime = (Sint64)statbuf.st_mtime;
+ pInfo->cTime = (Sint64)statbuf.st_ctime;
pInfo->mode = statbuf.st_mode;
pInfo->links = statbuf.st_nlink;
@@ -573,8 +584,8 @@ efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name)
}
}
- tval.actime = pInfo->accessTime;
- tval.modtime = pInfo->modifyTime;
+ tval.actime = (time_t)pInfo->accessTime;
+ tval.modtime = (time_t)pInfo->modifyTime;
return check_error(utime(name, &tval), errInfo);
}
@@ -633,12 +644,21 @@ efile_writev(Efile_error* errInfo, /* Where to return error codes */
do {
w = writev(fd, &iov[cnt], b);
} while (w < 0 && errno == EINTR);
+ if (w < 0 && errno == EINVAL) {
+ goto single_write;
+ }
} else
+ single_write:
/* Degenerated io vector - use regular write */
#endif
{
do {
- w = write(fd, iov[cnt].iov_base, iov[cnt].iov_len);
+ size_t iov_len = iov[cnt].iov_len;
+ size_t limit = 1024*1024*1024; /* 1GB */
+ if (iov_len > limit) {
+ iov_len = limit;
+ }
+ w = write(fd, iov[cnt].iov_base, iov_len);
} while (w < 0 && errno == EINTR);
ASSERT(w <= iov[cnt].iov_len ||
(w == -1 && errno != EINTR));
@@ -949,20 +969,24 @@ efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
fdrec.sfv_len = SENDFILE_CHUNK_SIZE;
else
fdrec.sfv_len = *nbytes;
+
retval = sendfilev(out_fd, &fdrec, 1, &len);
- /* Sometimes sendfilev can return -1 and still send data.
- When that happens we just pretend that no error happend. */
- if (retval != -1 || errno == EAGAIN || errno == EINTR ||
- len != 0) {
+ if (retval == -1 && errno == EINVAL) {
+ /* On some solaris versions (I've seen it on SunOS 5.10),
+ using a sfv_len larger then a filesize will result in
+ a -1 && errno == EINVAL return. We translate this so
+ a successful send of the data.*/
+ retval = len;
+ }
+
+ if (retval != -1 || errno == EAGAIN || errno == EINTR) {
*offset += len;
*nbytes -= len;
written += len;
- if (errno != EAGAIN && errno != EINTR && len != 0)
- retval = len;
}
} while (len == SENDFILE_CHUNK_SIZE);
-#elif defined(DARWIN)
+#elif defined(__DARWIN__)
int retval;
off_t len;
do {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-22 00:14:10 +0000