X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=filesetup.c;h=93cddb1f467b3aea77cfc3b858c1164e89da8964;hp=b0a40e572b23996ba6f53996a75eb447d2c6ecde;hb=d8602dd08170e11fb91dccde945bc527dbba57aa;hpb=0ddb270c21adffa45cd9d215f29aafd8a9c5b15a

diff --git a/filesetup.c b/filesetup.c
index b0a40e57..93cddb1f 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -8,11 +8,10 @@
 #include <sys/types.h>
 
 #include "fio.h"
-#include "os.h"
 
 static int extend_file(struct thread_data *td, struct fio_file *f)
 {
-	int r, new_layout = 0, flags;
+	int r, new_layout = 0, unlink_file = 0, flags;
 	unsigned long long left;
 	unsigned int bs;
 	char *b;
@@ -24,8 +23,10 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
 	 */
 	if (td_read(td) || (td_write(td) && td->o.overwrite))
 		new_layout = 1;
+	if (td_write(td) && !td->o.overwrite)
+		unlink_file = 1;
 
-	if (new_layout && (f->flags & FIO_FILE_EXISTS)) {
+	if ((unlink_file || new_layout) && (f->flags & FIO_FILE_EXISTS)) {
 		if (unlink(f->file_name) < 0) {
 			td_verror(td, errno, "unlink");
 			return 1;
@@ -47,14 +48,14 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
 		goto err;
 	}
 
+	if (!new_layout)
+		goto done;
+
 	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
 		td_verror(td, errno, "posix_fallocate");
 		goto err;
 	}
 
-	if (!new_layout)
-		goto done;
-
 	b = malloc(td->o.max_bs[DDIR_WRITE]);
 	memset(b, 0, td->o.max_bs[DDIR_WRITE]);
 
@@ -138,6 +139,9 @@ static int get_file_size(struct thread_data *td, struct fio_file *f)
 {
 	int ret = 0;
 
+	if (f->flags & FIO_SIZE_KNOWN)
+		return 0;
+
 	if (f->filetype == FIO_TYPE_FILE)
 		ret = file_size(td, f);
 	else if (f->filetype == FIO_TYPE_BD)
@@ -153,6 +157,7 @@ static int get_file_size(struct thread_data *td, struct fio_file *f)
 		return 1;
 	}
 
+	f->flags |= FIO_SIZE_KNOWN;
 	return 0;
 }
 
@@ -176,7 +181,7 @@ int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
 			log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
 			ret = 0;
 		}
-	} else if (f->filetype == FIO_TYPE_CHAR)
+	} else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
 		ret = 0;
 
 	if (ret < 0) {
@@ -195,27 +200,48 @@ void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
 
 int generic_open_file(struct thread_data *td, struct fio_file *f)
 {
+	int is_std = 0;
 	int flags = 0;
 
+	if (!strcmp(f->file_name, "-")) {
+		if (td_rw(td)) {
+			log_err("fio: can't read/write to stdin/out\n");
+			return 1;
+		}
+		is_std = 1;
+
+		/*
+		 * move output logging to stderr, if we are writing to stdout
+		 */
+		if (td_write(td))
+			f_out = stderr;
+	}
+
 	if (td->o.odirect)
 		flags |= OS_O_DIRECT;
 	if (td->o.sync_io)
 		flags |= O_SYNC;
 
-	if (td_write(td) || td_rw(td)) {
+	if (td_write(td)) {
 		flags |= O_RDWR;
 
 		if (f->filetype == FIO_TYPE_FILE)
 			flags |= O_CREAT;
 
-		f->fd = open(f->file_name, flags, 0600);
+		if (is_std)
+			f->fd = dup(STDOUT_FILENO);
+		else
+			f->fd = open(f->file_name, flags, 0600);
 	} else {
 		if (f->filetype == FIO_TYPE_CHAR)
 			flags |= O_RDWR;
 		else
 			flags |= O_RDONLY;
 
-		f->fd = open(f->file_name, flags);
+		if (is_std)
+			f->fd = dup(STDIN_FILENO);
+		else
+			f->fd = open(f->file_name, flags);
 	}
 
 	if (f->fd == -1) {
@@ -244,8 +270,15 @@ int open_files(struct thread_data *td)
 
 	for_each_file(td, f, i) {
 		err = td_io_open_file(td, f);
-		if (err)
+		if (err) {
+			if (td->error == EMFILE) {
+				log_err("fio: limited open files to: %d\n", td->nr_open_files);
+				td->o.open_files = td->nr_open_files;
+				err = 0;
+				clear_error(td);
+			}
 			break;
+		}
 
 		if (td->o.open_files == td->nr_open_files)
 			break;
@@ -263,18 +296,29 @@ int open_files(struct thread_data *td)
 /*
  * open/close all files, so that ->real_file_size gets set
  */
-static void get_file_sizes(struct thread_data *td)
+static int get_file_sizes(struct thread_data *td)
 {
 	struct fio_file *f;
 	unsigned int i;
+	int err = 0;
 
 	for_each_file(td, f, i) {
 		if (td->io_ops->open_file(td, f)) {
-			td->error = 0;
-			memset(td->verror, 0, sizeof(td->verror));
-		} else
-			td->io_ops->close_file(td, f);
+			if (td->error != ENOENT) {
+				log_err("%s\n", td->verror);
+				err = 1;
+			}
+			clear_error(td);
+		} else {
+			if (td->io_ops->close_file)
+				td->io_ops->close_file(td, f);
+		}
+
+		if (f->real_file_size == -1ULL && td->o.size)
+			f->real_file_size = td->o.size / td->o.nr_files;
 	}
+
+	return err;
 }
 
 /*
@@ -295,7 +339,7 @@ int setup_files(struct thread_data *td)
 	if (td->io_ops->setup)
 		err = td->io_ops->setup(td);
 	else
-		get_file_sizes(td);
+		err = get_file_sizes(td);
 
 	if (err)
 		return err;
@@ -315,7 +359,7 @@ int setup_files(struct thread_data *td)
 	/*
 	 * device/file sizes are zero and no size given, punt
 	 */
-	if (!total_size && !td->o.size) {
+	if ((!total_size || total_size == -1ULL) && !td->o.size) {
 		log_err("%s: you need to specify size=\n", td->o.name);
 		td_verror(td, EINVAL, "total_file_size");
 		return 1;
@@ -380,6 +424,7 @@ int setup_files(struct thread_data *td)
 			if (!(f->flags & FIO_FILE_EXTEND))
 				continue;
 
+			assert(f->filetype == FIO_TYPE_FILE);
 			f->flags &= ~FIO_FILE_EXTEND;
 			f->real_file_size = f->io_size;
 			err = extend_file(td, f);
@@ -429,8 +474,7 @@ void close_files(struct thread_data *td)
 	unsigned int i;
 
 	for_each_file(td, f, i) {
-		if ((f->flags & FIO_FILE_UNLINK) &&
-		    f->filetype == FIO_TYPE_FILE)
+		if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
 			unlink(f->file_name);
 
 		td_io_close_file(td, f);
@@ -454,13 +498,18 @@ static void get_file_type(struct fio_file *f)
 {
 	struct stat sb;
 
-	f->filetype = FIO_TYPE_FILE;
+	if (!strcmp(f->file_name, "-"))
+		f->filetype = FIO_TYPE_PIPE;
+	else
+		f->filetype = FIO_TYPE_FILE;
 
 	if (!lstat(f->file_name, &sb)) {
 		if (S_ISBLK(sb.st_mode))
 			f->filetype = FIO_TYPE_BD;
 		else if (S_ISCHR(sb.st_mode))
 			f->filetype = FIO_TYPE_CHAR;
+		else if (S_ISFIFO(sb.st_mode))
+			f->filetype = FIO_TYPE_PIPE;
 	}
 }
 
@@ -477,6 +526,12 @@ void add_file(struct thread_data *td, const char *fname)
 	memset(f, 0, sizeof(*f));
 	f->fd = -1;
 
+	/*
+	 * init function, io engine may not be loaded yet
+	 */
+	if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
+		f->real_file_size = -1ULL;
+
 	if (td->o.directory)
 		len = sprintf(file_name, "%s/", td->o.directory);
 
@@ -492,6 +547,7 @@ void add_file(struct thread_data *td, const char *fname)
 
 void get_file(struct fio_file *f)
 {
+	assert(f->flags & FIO_FILE_OPEN);
 	f->references++;
 }
 
@@ -509,6 +565,7 @@ void put_file(struct thread_data *td, struct fio_file *f)
 
 	if (td->io_ops->close_file)
 		td->io_ops->close_file(td, f);
+
 	td->nr_open_files--;
 	f->flags &= ~FIO_FILE_OPEN;
 }