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Add -b bootnum to allow creation of a specific boot number (rather

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than the auotmatic selection). This is important in some scripting
environments.

Also, remove bogus checks for bootnum != 0. 0 is a valid bootnum.

Sponsored by: Netflix
This commit is contained in:
Warner Losh 2018-07-27 18:18:20 +00:00
parent b51092c7ec
commit de26ba4d82
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=336768
2 changed files with 34 additions and 10 deletions
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5
usr.sbin/efibootmgr/efibootmgr.8
View file

@ -36,7 +36,7 @@
.Op Fl T
.Op Fl o Ar bootorder
.Op Fl verbose
.Op Fl c -k Ar kernel -l Ar loader [-L Ar label] [--dry-run]
.Op Fl c -k Ar kernel -l Ar loader [-L Ar label] [--dry-run] [-b Bootvar]
.Sh "DESCRIPTION"
.Nm
manipulates how UEFI Boot Managers boot the system.
@ -70,6 +70,9 @@ Create a new Boot Variable
The path to and name of the loader.
.It Fl k -kernel Ar kernel
The path to and name of the kernel.
.It Fl b Bootvar
When creating an entry, use Bootvar as the index.
Fail if it already exists.
.It Fl L -label Ar label
An optional description for the entry.
.It Fl D -dry-run

39
usr.sbin/efibootmgr/efibootmgr.c
View file

@ -82,6 +82,7 @@ typedef struct _bmgr_opts {
bool delete_bootnext;
bool del_timeout;
bool dry_run;
bool has_bootnum;
bool once;
int cp_src;
bool set_active;
@ -170,7 +171,7 @@ set_bootvar(const char *name, uint8_t *data, size_t size)
#define USAGE \
" [-aAnNB Bootvar] [-t timeout] [-T] [-o bootorder] [-O] [--verbose] [--help] \n\
[-c -l loader [-k kernel ] [-L label] [--dry-run]]"
[-c -l loader [-k kernel ] [-L label] [--dry-run] [-b Bootvar]]"
#define CREATE_USAGE \
" efibootmgr -c -l loader [-k kernel] [-L label] [--dry-run]"
@ -201,6 +202,10 @@ parse_args(int argc, char *argv[])
opts.set_active = true;
opts.bootnum = strtoul(optarg, NULL, 16);
break;
case 'b':
opts.has_bootnum = true;
opts.bootnum = strtoul(optarg, NULL, 16);
break;
case 'B':
opts.delete = true;
opts.bootnum = strtoul(optarg, NULL, 16);
@ -266,11 +271,6 @@ parse_args(int argc, char *argv[])
errx(1, "%s",CREATE_USAGE);
return;
}
if (opts.set_bootnext && !(opts.bootnum))
errx(1, "%s", BOOTNEXT_USAGE);
if ((opts.set_active || opts.set_inactive) && !(opts.bootnum))
errx(1, "%s", ACTIVE_USAGE);
if (opts.order && !(opts.order))
errx(1, "%s", ORDER_USAGE);
@ -557,6 +557,22 @@ make_next_boot_var_name(void)
return name;
}
static char *
make_boot_var_name(uint16_t bootnum)
{
struct entry *v;
char *name;
LIST_FOREACH(v, &efivars, entries) {
if (v->idx == bootnum)
return NULL;
}
asprintf(&name, "%s%04X", "Boot", bootnum);
if (name == NULL)
err(1, "asprintf");
return name;
}
static size_t
create_loadopt(uint8_t *buf, size_t bufmax, uint32_t attributes, efidp dp, size_t dp_size,
@ -605,7 +621,8 @@ create_loadopt(uint8_t *buf, size_t bufmax, uint32_t attributes, efidp dp, size_
static int
make_boot_var(const char *label, const char *loader, const char *kernel, const char *env, bool dry_run)
make_boot_var(const char *label, const char *loader, const char *kernel, const char *env, bool dry_run,
int bootnum)
{
struct entry *new_ent;
uint32_t load_attrs = 0;
@ -617,7 +634,10 @@ make_boot_var(const char *label, const char *loader, const char *kernel, const c
assert(label != NULL);
bootvar = make_next_boot_var_name();
if (bootnum == -1)
bootvar = make_next_boot_var_name();
else
bootvar = make_boot_var_name((uint16_t)bootnum);
if (bootvar == NULL)
err(1, "bootvar creation");
if (loader == NULL)
@ -894,7 +914,8 @@ main(int argc, char *argv[])
* side effect, adds to boot order, but not yet active.
*/
make_boot_var(opts.label ? opts.label : "",
opts.loader, opts.kernel, opts.env, opts.dry_run);
opts.loader, opts.kernel, opts.env, opts.dry_run,
opts.has_bootnum ? opts.bootnum : -1);
else if (opts.set_active || opts.set_inactive )
handle_activity(opts.bootnum, opts.set_active);
else if (opts.order != NULL)