Date: Mon, 16 Oct 2023 23:32:19 GMT From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 51749e05e96e - main - bsdinstall partedit: Replace malloc + sprintf with asprintf Message-ID: <202310162332.39GNWJEO094696@gitrepo.freebsd.org>
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The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=51749e05e96eb07134a38984a8c06608b20f07ea commit 51749e05e96eb07134a38984a8c06608b20f07ea Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2023-10-16 23:25:15 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2023-10-16 23:25:15 +0000 bsdinstall partedit: Replace malloc + sprintf with asprintf This avoids potential bugs with the length passed to malloc not matching the string written via sprintf. Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D42238 --- usr.sbin/bsdinstall/partedit/gpart_ops.c | 10 +++------- usr.sbin/bsdinstall/partedit/partedit.c | 4 ++-- 2 files changed, 5 insertions(+), 9 deletions(-) diff --git a/usr.sbin/bsdinstall/partedit/gpart_ops.c b/usr.sbin/bsdinstall/partedit/gpart_ops.c index 7f34819a3d4d..7395030b26aa 100644 --- a/usr.sbin/bsdinstall/partedit/gpart_ops.c +++ b/usr.sbin/bsdinstall/partedit/gpart_ops.c @@ -732,18 +732,16 @@ set_default_part_metadata(const char *name, const char *scheme, } if (newfs != NULL && newfs[0] != '\0') { - md->newfs = malloc(strlen(newfs) + strlen(" /dev/") + - strlen(mountpoint) + 5 + strlen(name) + 1); if (strcmp("freebsd-zfs", type) == 0) { zpool_name = strdup((strlen(mountpoint) == 1) ? "root" : &mountpoint[1]); for (i = 0; zpool_name[i] != 0; i++) if (!isalnum(zpool_name[i])) zpool_name[i] = '_'; - sprintf(md->newfs, "%s %s /dev/%s", newfs, + asprintf(&md->newfs, "%s %s /dev/%s", newfs, zpool_name, name); } else { - sprintf(md->newfs, "%s /dev/%s", newfs, name); + asprintf(&md->newfs, "%s /dev/%s", newfs, name); } } } @@ -780,9 +778,7 @@ set_default_part_metadata(const char *name, const char *scheme, if (strcmp("freebsd-zfs", type) == 0) { md->fstab->fs_spec = strdup(zpool_name); } else { - md->fstab->fs_spec = malloc(strlen(name) + - strlen("/dev/") + 1); - sprintf(md->fstab->fs_spec, "/dev/%s", name); + asprintf(&md->fstab->fs_spec, "/dev/%s", name); } md->fstab->fs_file = strdup(mountpoint); /* Get VFS from text after freebsd-, if possible */ diff --git a/usr.sbin/bsdinstall/partedit/partedit.c b/usr.sbin/bsdinstall/partedit/partedit.c index bb2580789fe8..b6c81ad9fc25 100644 --- a/usr.sbin/bsdinstall/partedit/partedit.c +++ b/usr.sbin/bsdinstall/partedit/partedit.c @@ -360,8 +360,8 @@ apply_changes(struct gmesh *mesh) TAILQ_FOREACH(md, &part_metadata, metadata) { if (md->newfs != NULL) { char *item; - item = malloc(255); - sprintf(item, "Initializing %s", md->name); + + asprintf(&item, "Initializing %s", md->name); minilabel[i] = item; miniperc[i] = BSDDIALOG_MG_PENDING; i++;
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