fsstress: check system call return values

Check the return values of various system calls and blow up if something
went wrong.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-By: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 8d0734fc0d1c02a42267082def689c6996b0df2d..af5d125f68621dc647428b21305967eb034687a6 100644 (file)
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -733,7 +733,7 @@ append_pathname(pathname_t *name, char *str)
        /* attempting to append to a dir a zero length path */
        if (len && *str == '/' && name->len == 0) {
                fprintf(stderr, "fsstress: append_pathname failure\n");
-               chdir(homedir);
+               assert(chdir(homedir) == 0);
                abort();
                /* NOTREACHED */
        }
@@ -765,7 +765,7 @@ attr_list_path(pathname_t *name,
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = attr_list_path(&newname, buffer, buffersize, flags, cursor);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -784,7 +784,7 @@ attr_remove_path(pathname_t *name, const char *attrname, int flags)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = attr_remove_path(&newname, attrname, flags);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -805,7 +805,7 @@ attr_set_path(pathname_t *name, const char *attrname, const char *attrvalue,
        if (chdir(buf) == 0) {
                rval = attr_set_path(&newname, attrname, attrvalue, valuelength,
                        flags);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -819,7 +819,7 @@ check_cwd(void)
 
        if (stat64(".", &statbuf) == 0 && statbuf.st_ino == top_ino)
                return;
-       chdir(homedir);
+       assert(chdir(homedir) == 0);
        fprintf(stderr, "fsstress: check_cwd failure\n");
        abort();
        /* NOTREACHED */
@@ -858,7 +858,7 @@ creat_path(pathname_t *name, mode_t mode)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = creat_path(&newname, mode);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -996,11 +996,15 @@ doproc(void)
                }
        }
 errout:
-       chdir("..");
+       assert(chdir("..") == 0);
        free(homedir);
        if (cleanup) {
+               int ret;
+
                sprintf(cmd, "rm -rf %s", buf);
-               system(cmd);
+               ret = system(cmd);
+               if (ret != 0)
+                       perror("cleaning up");
                cleanup_flist();
        }
 }
@@ -1216,7 +1220,7 @@ lchown_path(pathname_t *name, uid_t owner, gid_t group)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = lchown_path(&newname, owner, group);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1240,7 +1244,7 @@ link_path(pathname_t *name1, pathname_t *name2)
        if (strcmp(buf1, buf2) == 0) {
                if (chdir(buf1) == 0) {
                        rval = link_path(&newname1, &newname2);
-                       chdir("..");
+                       assert(chdir("..") == 0);
                }
        } else {
                if (strcmp(buf1, "..") == 0)
@@ -1260,7 +1264,7 @@ link_path(pathname_t *name1, pathname_t *name2)
                        append_pathname(&newname2, name2->path);
                        if (chdir(buf1) == 0) {
                                rval = link_path(&newname1, &newname2);
-                               chdir("..");
+                               assert(chdir("..") == 0);
                        }
                } else {
                        free_pathname(&newname1);
@@ -1268,7 +1272,7 @@ link_path(pathname_t *name1, pathname_t *name2)
                        append_pathname(&newname1, name1->path);
                        if (chdir(buf2) == 0) {
                                rval = link_path(&newname1, &newname2);
-                               chdir("..");
+                               assert(chdir("..") == 0);
                        }
                }
        }
@@ -1290,7 +1294,7 @@ lstat64_path(pathname_t *name, struct stat64 *sbuf)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = lstat64_path(&newname, sbuf);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1326,7 +1330,7 @@ mkdir_path(pathname_t *name, mode_t mode)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = mkdir_path(&newname, mode);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1345,7 +1349,7 @@ mknod_path(pathname_t *name, mode_t mode, dev_t dev)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = mknod_path(&newname, mode, dev);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1386,7 +1390,7 @@ open_path(pathname_t *name, int oflag)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = open_path(&newname, oflag);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1405,7 +1409,7 @@ opendir_path(pathname_t *name)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = opendir_path(&newname);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1446,7 +1450,7 @@ readlink_path(pathname_t *name, char *lbuf, size_t lbufsiz)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = readlink_path(&newname, lbuf, lbufsiz);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1470,7 +1474,7 @@ rename_path(pathname_t *name1, pathname_t *name2)
        if (strcmp(buf1, buf2) == 0) {
                if (chdir(buf1) == 0) {
                        rval = rename_path(&newname1, &newname2);
-                       chdir("..");
+                       assert(chdir("..") == 0);
                }
        } else {
                if (strcmp(buf1, "..") == 0)
@@ -1490,7 +1494,7 @@ rename_path(pathname_t *name1, pathname_t *name2)
                        append_pathname(&newname2, name2->path);
                        if (chdir(buf1) == 0) {
                                rval = rename_path(&newname1, &newname2);
-                               chdir("..");
+                               assert(chdir("..") == 0);
                        }
                } else {
                        free_pathname(&newname1);
@@ -1498,7 +1502,7 @@ rename_path(pathname_t *name1, pathname_t *name2)
                        append_pathname(&newname1, name1->path);
                        if (chdir(buf2) == 0) {
                                rval = rename_path(&newname1, &newname2);
-                               chdir("..");
+                               assert(chdir("..") == 0);
                        }
                }
        }
@@ -1520,7 +1524,7 @@ rmdir_path(pathname_t *name)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = rmdir_path(&newname);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1603,7 +1607,7 @@ stat64_path(pathname_t *name, struct stat64 *sbuf)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = stat64_path(&newname, sbuf);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1627,7 +1631,7 @@ symlink_path(const char *name1, pathname_t *name)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = symlink_path(name1, &newname);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1646,7 +1650,7 @@ truncate64_path(pathname_t *name, off64_t length)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = truncate64_path(&newname, length);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;
@@ -1665,7 +1669,7 @@ unlink_path(pathname_t *name)
        separate_pathname(name, buf, &newname);
        if (chdir(buf) == 0) {
                rval = unlink_path(&newname);
-               chdir("..");
+               assert(chdir("..") == 0);
        }
        free_pathname(&newname);
        return rval;