Revert "fabrics: retry connect command on EINTR"

This reverts commit 2b30489.

The simple approach to retry on EINTR will also prevent to exit the loop
on Ctrl-C. And adding a signal handler in the library is generally not a
good idea. It would need an additional API between users and the library
to handle signals. Let's forward EINTR and the user handle this instead.

Signed-off-by: Daniel Wagner <wagi@kernel.org>

Author: igaw

meson.build

@@ -244,20 +244,6 @@ else
   conf.set('fallthrough', 'do {} while (0) /* fallthrough */')
 endif
 
-if cc.has_function('TEMP_FAILURE_RETRY', prefix : '#include <errno.h>')
-  conf.set('TFR', 'TEMP_FAILURE_RETRY')
-else
-  conf.set('TFR(exp)', '''					\
-({								\
-	long int __result = 0; 					\
-	do {							\
-		__result = (long int)(exp);			\
-	} while ((__result == -1) && (errno == EINTR));		\
-	__result;						\
-})
-''')
-endif
-
 ################################################################################
 substs = configuration_data()
 substs.set('NAME',    meson.project_name())

src/nvme/fabrics.c

@@ -814,7 +814,7 @@ static int __nvmf_add_ctrl(nvme_root_t r, const char *argstr)
 
 	nvme_msg(r, LOG_DEBUG, "connect ctrl, '%.*s'\n",
 		 (int)strcspn(argstr,"\n"), argstr);
-	ret = TFR(write(fd, argstr, len));
+	ret = write(fd, argstr, len);
 	if (ret != len) {
 		nvme_msg(r, LOG_INFO, "Failed to write to %s: %s\n",
 			 nvmf_dev, strerror(errno));