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Fedora 28: Fix misc bounds check compiler warnings

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Fix a bunch of (mostly) sprintf/snprintf truncation compiler
warnings that show up on Fedora 28 (GCC 8.0.1).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7361
Closes #7368
This commit is contained in:
Tony Hutter
2018-04-04 10:16:47 -07:00
parent fd01167ffd
commit f5ecab3aef
10 changed files with 80 additions and 39 deletions
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tests/zfs-tests/cmd/mkbusy/mkbusy.c
+6 -10
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@@ -98,8 +98,9 @@ main(int argc, char *argv[])
if ((ret = stat(argv[0], &sbuf)) != 0) {
char *arg, *dname, *fname;
int arglen, dlen, flen;
int arglen;
char *slash;
int rc;
/*
* The argument supplied doesn't exist. Copy the path, and
@@ -126,23 +127,18 @@ main(int argc, char *argv[])
free(arg);
if (dname == NULL || fname == NULL)
fail("strdup", 1);
dlen = strlen(dname);
flen = strlen(fname);
/* The directory portion of the path must exist */
if ((ret = stat(dname, &sbuf)) != 0 || !(sbuf.st_mode &
S_IFDIR))
usage(prog);
if ((fpath = (char *)malloc(dlen + 1 + flen + 1)) == NULL)
fail("malloc", 1);
(void) memset(fpath, '\0', dlen + 1 + flen + 1);
(void) strncpy(fpath, dname, dlen);
fpath[dlen] = '/';
(void) strncat(fpath, fname, flen);
rc = asprintf(&fpath, "%s/%s", dname, fname);
free(dname);
free(fname);
if (rc == -1 || fpath == NULL)
fail("asprintf", 1);
} else if ((sbuf.st_mode & S_IFMT) == S_IFREG ||
(sbuf.st_mode & S_IFMT) == S_IFLNK ||
(sbuf.st_mode & S_IFMT) == S_IFCHR ||