using [xa]sprintf for string concatenation is neat and saves

~100 bytes according to bloatcheck. Also this fixes bug in rpm

6 files changed, 10 insertions, 13 deletions

diff --git a/archival/gzip.c b/archival/gzip.c
index 37fefbf6a..ad2c24df1 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -1212,9 +1212,7 @@ int gzip_main(int argc, char **argv)
 				time_stamp = statBuf.st_ctime;
 
 				if (!tostdout) {
-					path = xmalloc(strlen(argv[i]) + 4);
-					strcpy(path, argv[i]);
-					strcat(path, ".gz");
+					path = xasprintf("%s.gz", argv[i]);
 
 					/* Open output file */
 #if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1) && defined O_NOFOLLOW
diff --git a/archival/rpm.c b/archival/rpm.c
index d399e0ea2..a459839d9 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -290,8 +290,7 @@ static void fileaction_dobackup(char *filename, int fileref)
 	if (rpm_getint(RPMTAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */
 		stat_res = lstat (filename, &oldfile);
 		if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists  - really should check MD5's etc to see if different */
-			newname = xstrdup(filename);
-			newname = strcat(newname, ".rpmorig");
+			newname = xasprintf("%s.rpmorig", filename);
 			copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
 			remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
 			free(newname);
diff --git a/coreutils/tr.c b/coreutils/tr.c
index 6eb86750d..f2c9065d1 100644
--- a/coreutils/tr.c
+++ b/coreutils/tr.c
@@ -128,7 +128,7 @@ static unsigned int expand(const char *arg, char *buffer)
 					for (i = 'A'; i <= 'Z'; i++)
 						*buffer++ = i;
 				else if (strncmp(arg, "space", 5) == 0) {
-				    const char s[] = "\t\n\v\f\r ";
+					const char s[] = "\t\n\v\f\r ";
 					strcat((char*)buffer, s);
 					buffer += sizeof(s) - 1;
 				}
diff --git a/e2fsprogs/ext2fs/mkjournal.c b/e2fsprogs/ext2fs/mkjournal.c
index c23ed9021..5bdd34682 100644
--- a/e2fsprogs/ext2fs/mkjournal.c
+++ b/e2fsprogs/ext2fs/mkjournal.c
@@ -322,8 +322,9 @@ errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, int flags)
 	char			jfile[1024];
 	int			fd, mount_flags, f;
 
-	if ((retval = ext2fs_check_mount_point(fs->device_name, &mount_flags,
-					       jfile, sizeof(jfile)-10)))
+	retval = ext2fs_check_mount_point(fs->device_name, &mount_flags,
+					       jfile, sizeof(jfile)-10);
+	if (retval)
 		return retval;
 
 	if (mount_flags & EXT2_MF_MOUNTED) {
diff --git a/procps/sysctl.c b/procps/sysctl.c
index 03a03889e..297a12a85 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -129,7 +129,7 @@ int sysctl_preload_file(const char *filename, int output)
 	}
 
 	while (fgets(oneline, sizeof(oneline) - 1, fp)) {
-		oneline[sizeof(oneline) - 1] = 0;
+		oneline[sizeof(oneline) - 1] = '\0';
 		lineno++;
 		trim(oneline);
 		ptr = (char *) oneline;
@@ -156,9 +156,8 @@ int sysctl_preload_file(const char *filename, int output)
 
 		while ((*value == ' ' || *value == '\t') && *value != 0)
 			value++;
-		strcpy(buffer, name);
-		strcat(buffer, "=");
-		strcat(buffer, value);
+		/* safe because sizeof(oneline) == sizeof(buffer) */
+		sprintf(buffer, "%s=%s", name, value);
 		sysctl_write_setting(buffer, output);
 	}
 	fclose(fp);
diff --git a/sysklogd/logger.c b/sysklogd/logger.c
index ea093ed52..762e70ff7 100644
--- a/sysklogd/logger.c
+++ b/sysklogd/logger.c
@@ -138,7 +138,7 @@ int logger_main(int argc, char **argv)
 			len += strlen(*argv);
 			message = xrealloc(message, len);
 			if(!i)
-				message[0] = 0;
+				message[0] = '\0';
 			else
 				strcat(message, " ");
 			strcat(message, *argv);