40 lines
862 B
C
40 lines
862 B
C
#include "../git-compat-util.h"
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int gitsetenv(const char *name, const char *value, int replace)
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{
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int out;
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size_t namelen, valuelen;
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char *envstr;
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if (!name || strchr(name, '=') || !value) {
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errno = EINVAL;
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return -1;
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}
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if (!replace) {
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char *oldval = NULL;
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oldval = getenv(name);
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if (oldval) return 0;
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}
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namelen = strlen(name);
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valuelen = strlen(value);
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envstr = malloc(st_add3(namelen, valuelen, 2));
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if (!envstr) {
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errno = ENOMEM;
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return -1;
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}
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memcpy(envstr, name, namelen);
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envstr[namelen] = '=';
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memcpy(envstr + namelen + 1, value, valuelen);
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envstr[namelen + valuelen + 1] = 0;
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out = putenv(envstr);
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/* putenv(3) makes the argument string part of the environment,
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* and changing that string modifies the environment --- which
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* means we do not own that storage anymore. Do not free
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* envstr.
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*/
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return out;
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}
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