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libc: introduce <envvars.h>

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The new header envvars.h contains the names of commonly used
environment variables, such as $user, $ifs, $path and so on.

These defines are useful for Jehanne core applications that
use them to comunicate some values.

They are not strictly required, but having such defines we
can easily change the naming convention (from lowercase to uppercase).
This commit is contained in:
Giacomo Tesio
2017-10-20 00:55:05 +02:00
parent 65d37f432f
commit fab9c1d80f
47 changed files with 144 additions and 69 deletions
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2
sys/include/libc.h
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@ -325,7 +325,6 @@ extern int jehanne_encodefmt(Fmt*);
extern void jehanne_exits(const char*) __attribute__ ((noreturn));
extern double jehanne_frexp(double, int*);
extern uintptr_t jehanne_getcallerpc(void);
extern char* jehanne_getenv(const char*);
extern int jehanne_getfields(char*, char**, int, int, const char*);
extern int jehanne_gettokens(char *, char **, int, const char *);
extern char* jehanne_getuser(void);
@ -344,7 +343,6 @@ extern void jehanne_perror(const char*);
extern int jehanne_pipe(int pipes[2]);
extern int jehanne_postnote(int, int, const char *);
extern double jehanne_pow10(int);
extern int jehanne_putenv(const char*, const char*);
extern void jehanne_qsort(void*, long, int,
int (*)(const void*, const void*));
extern void* jehanne_bsearch(const void* key, const void* base, size_t nmemb, size_t size,