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| author | Grant Erickson <gerickson@nuovations.com> | 2008-05-06 20:16:15 -0700 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-05-09 23:40:40 +0200 |
| commit | bc11756daff89a3de09ca80adac962b88cf06e6e (patch) | |
| tree | 9688c4851714884484c3e1834f272cb63e7b4cb6 /tools/env/fw_env.c | |
| parent | f3b6d528e4dd719640a4bfcd954f4e4c7f5db0d6 (diff) | |
| download | u-boot-imx-bc11756daff89a3de09ca80adac962b88cf06e6e.zip u-boot-imx-bc11756daff89a3de09ca80adac962b88cf06e6e.tar.gz u-boot-imx-bc11756daff89a3de09ca80adac962b88cf06e6e.tar.bz2 | |
Propagate Error Status to the Shell on fw_printenv Errors
Changed implementation such that fw_printenv returns failure status
when one or more specified variables do not exist or when incorrect
command syntax is used.
This aids scripting fw_printenv such that the script can key of the
return status rather than relying on standard error "scraping".
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'tools/env/fw_env.c')
| -rw-r--r-- | tools/env/fw_env.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c index e083a5b..b8bca91 100644 --- a/tools/env/fw_env.c +++ b/tools/env/fw_env.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000-2003 + * (C) Copyright 2000-2008 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this @@ -209,13 +209,14 @@ char *fw_getenv (char *name) * Print the current definition of one, or more, or all * environment variables */ -void fw_printenv (int argc, char *argv[]) +int fw_printenv (int argc, char *argv[]) { char *env, *nxt; int i, n_flag; + int rc = 0; if (env_init ()) - return; + return (-1); if (argc == 1) { /* Print all env variables */ for (env = environment.data; *env; env = nxt + 1) { @@ -223,13 +224,13 @@ void fw_printenv (int argc, char *argv[]) if (nxt >= &environment.data[ENV_SIZE]) { fprintf (stderr, "## Error: " "environment not terminated\n"); - return; + return (-1); } } printf ("%s\n", env); } - return; + return (0); } if (strcmp (argv[1], "-n") == 0) { @@ -239,7 +240,7 @@ void fw_printenv (int argc, char *argv[]) if (argc != 2) { fprintf (stderr, "## Error: " "`-n' option requires exactly one argument\n"); - return; + return (-1); } } else { n_flag = 0; @@ -255,7 +256,7 @@ void fw_printenv (int argc, char *argv[]) if (nxt >= &environment.data[ENV_SIZE]) { fprintf (stderr, "## Error: " "environment not terminated\n"); - return; + return (-1); } } val = envmatch (name, env); @@ -268,9 +269,13 @@ void fw_printenv (int argc, char *argv[]) break; } } - if (!val) + if (!val) { fprintf (stderr, "## Error: \"%s\" not defined\n", name); + rc = -1; + } } + + return (rc); } /* |