diff options
| author | Marek Vasut <marex@denx.de> | 2022-12-20 07:25:59 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-01-11 15:02:24 -0500 |
| commit | 721307eba0e7d94241698936c58352ee3c6da748 (patch) | |
| tree | 7252c2fc1aad94b0c013ac8e092d40dac2093623 /common/cli_hush.c | |
| parent | f3d914cfdd5ac611d99f04096497f4cd13dd6aaa (diff) | |
| download | u-boot-721307eba0e7d94241698936c58352ee3c6da748.zip u-boot-721307eba0e7d94241698936c58352ee3c6da748.tar.gz u-boot-721307eba0e7d94241698936c58352ee3c6da748.tar.bz2 | |
cmd: exit: Fix return value propagation out of environment scripts
Make sure the 'exit' command as well as 'exit $val' command exits
from environment scripts immediately and propagates return value
out of those scripts fully. That means the following behavior is
expected:
"
=> setenv foo 'echo bar ; exit 1' ; run foo ; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0' ; run foo ; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2' ; run foo ; echo $?
bar
0
"
As well as the followin behavior:
"
=> setenv foo 'echo bar ; exit 3 ; echo fail'; run foo; echo $?
bar
3
=> setenv foo 'echo bar ; exit 1 ; echo fail'; run foo; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -1 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit ; echo fail'; run foo; echo $?
bar
0
"
Fixes: 8c4e3b79bd0 ("cmd: exit: Fix return value")
Reviewed-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'common/cli_hush.c')
| -rw-r--r-- | common/cli_hush.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/common/cli_hush.c b/common/cli_hush.c index a80b847..1ad7a50 100644 --- a/common/cli_hush.c +++ b/common/cli_hush.c @@ -1901,7 +1901,7 @@ static int run_list_real(struct pipe *pi) last_return_code = -rcode - 2; return -2; /* exit */ } - last_return_code=(rcode == 0) ? 0 : 1; + last_return_code = rcode; #endif #ifndef __U_BOOT__ pi->num_progs = save_num_progs; /* restore number of programs */ @@ -3211,7 +3211,15 @@ static int parse_stream_outer(struct in_str *inp, int flag) printf("exit not allowed from main input shell.\n"); continue; } - break; + /* + * DANGER + * Return code -2 is special in this context, + * it indicates exit from inner pipe instead + * of return code itself, the return code is + * stored in 'last_return_code' variable! + * DANGER + */ + return -2; } if (code == -1) flag_repeat = 0; @@ -3248,9 +3256,9 @@ int parse_string_outer(const char *s, int flag) #endif /* __U_BOOT__ */ { struct in_str input; + int rcode; #ifdef __U_BOOT__ char *p = NULL; - int rcode; if (!s) return 1; if (!*s) @@ -3262,11 +3270,12 @@ int parse_string_outer(const char *s, int flag) setup_string_in_str(&input, p); rcode = parse_stream_outer(&input, flag); free(p); - return rcode; + return rcode == -2 ? last_return_code : rcode; } else { #endif setup_string_in_str(&input, s); - return parse_stream_outer(&input, flag); + rcode = parse_stream_outer(&input, flag); + return rcode == -2 ? last_return_code : rcode; #ifdef __U_BOOT__ } #endif @@ -3286,7 +3295,7 @@ int parse_file_outer(void) setup_file_in_str(&input); #endif rcode = parse_stream_outer(&input, FLAG_PARSE_SEMICOLON); - return rcode; + return rcode == -2 ? last_return_code : rcode; } #ifdef __U_BOOT__ |