Rich Felker
5ce3737931
libc.h was intended to be a header for access to global libc state and related interfaces, but ended up included all over the place because it was the way to get the weak_alias macro. most of the inclusions removed here are places where weak_alias was needed. a few were recently introduced for hidden. some go all the way back to when libc.h defined CANCELPT_BEGIN and _END, and all (wrongly implemented) cancellation points had to include it. remaining spurious users are mostly callers of the LOCK/UNLOCK macros and files that use the LFS64 macro to define the awful *64 aliases. in a few places, new inclusion of libc.h is added because several internal headers no longer implicitly include libc.h. declarations for __lockfile and __unlockfile are moved from libc.h to stdio_impl.h so that the latter does not need libc.h. putting them in libc.h made no sense at all, since the macros in stdio_impl.h are needed to use them correctly anyway.
30 lines
651 B
C
30 lines
651 B
C
#define _BSD_SOURCE
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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int __mkostemps(char *template, int len, int flags)
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{
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size_t l = strlen(template);
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if (l<6 || len>l-6 || memcmp(template+l-len-6, "XXXXXX", 6)) {
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errno = EINVAL;
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return -1;
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}
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flags -= flags & O_ACCMODE;
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int fd, retries = 100;
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do {
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__randname(template+l-len-6);
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if ((fd = open(template, flags | O_RDWR | O_CREAT | O_EXCL, 0600))>=0)
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return fd;
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} while (--retries && errno == EEXIST);
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memcpy(template+l-len-6, "XXXXXX", 6);
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return -1;
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}
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weak_alias(__mkostemps, mkostemps);
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weak_alias(__mkostemps, mkostemps64);
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