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author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-04-29 11:09:43 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-04-29 11:29:25 +0200 |
commit | a66b7f8afd9a58d918f4a5748722f0e64754db7f (patch) | |
tree | 179452d1907cd156101607405410447b8e975ecc /common/env.c | |
parent | 22b8e9415d29c1e11cef0efb0aafd5ebd78cb51b (diff) | |
download | barebox-a66b7f8afd9a58d918f4a5748722f0e64754db7f.tar.gz barebox-a66b7f8afd9a58d918f4a5748722f0e64754db7f.tar.xz |
getenv_bool: use strtobool
We now have a library function to convert a string to a boolean type.
Use it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/env.c')
-rw-r--r-- | common/env.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/common/env.c b/common/env.c index c98ed73f9b..d6cab52a4b 100644 --- a/common/env.c +++ b/common/env.c @@ -28,6 +28,7 @@ #include <xfuncs.h> #include <errno.h> #include <init.h> +#include <string.h> #include <environment.h> static struct env_context root = { @@ -323,20 +324,25 @@ int getenv_uint(const char *var , unsigned int *val) } EXPORT_SYMBOL(getenv_uint); +/** + * getenv_bool - get a boolean value from an environment variable + * @var - Variable name + * @val - The boolean value returned. + * + * This function treats + * - any positive (nonzero) number as true + * - "0" as false + * - "true" (case insensitive) as true + * - "false" (case insensitive) as false + * + * Returns 0 for success or negative error code if the variable does + * not exist or contains something this function does not recognize + * as true or false. + */ int getenv_bool(const char *var, int *val) { const char *valstr = getenv(var); - if (!valstr || !*valstr) - return -EINVAL; - - if (!*valstr) - *val = false; - else if (*valstr == '0') - *val = false; - else - *val = true; - - return 0; + return strtobool(valstr, val); } EXPORT_SYMBOL(getenv_bool); |