devel September 2018

devel@uclibc-ng.org

3 participants
5 discussions

uclibc-ng-test and math complex functions

by Laurent Thévenoux

Hi, I'm trying to build uclibc-ng-test, but I can't link with complex trigo functions (such as cacos, casin, catan, etc.). They are required for the following test targets: test-double, test-double-finite, test-float, test-float-finite, test-idouble, and test-ifloat. They are declared in uclibc-ng/sysdeps/linux/common/bits/cmathcalls.h, but I can't find their definitions. Does uclibc-ng define them? Thanks, -- Laurent Thévenoux lthevenoux(a)kalray.eu Kalray S.A. 180 Avenue de l'Europe 38330 Montbonnot FRANCE

6 years, 2 months

recvmmsg/sendmmsg not in kernel < Linux 2.6.33

by Lance Fredrickson

Hi, I'm having an issue where it seems recvmmsg/sendmmsg is being included into the c library regardless of kernel version. I work with kernel versions < 2.6.33 before this feature was included. When compiling applications, autoconf is then mistakenly told from the c-library that recvmmsg/sendmmsg is supported by the kernel, resulting in runtime errors. I use buildroot to compile my toolchains. Looking through uclibc-ng git, it looks like this feature was added with this commit. https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=6e15fafa200666… thanks, Lance Fredrickson

6 years, 5 months

recvmmsg/sendmmsg not in kernel < Linux 2.6.33

by Lance Fredrickson

6 years, 5 months

[PATCH] bugfix renameat2 wrong implement.

by Guo Ren

Signed-off-by: Guo Ren <ren_guo(a)c-sky.com> --- libc/sysdeps/linux/common/rename.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libc/sysdeps/linux/common/rename.c b/libc/sysdeps/linux/common/rename.c index 30a4ed7..613ae4e 100644 --- a/libc/sysdeps/linux/common/rename.c +++ b/libc/sysdeps/linux/common/rename.c @@ -20,7 +20,9 @@ int rename(const char *oldpath, const char *newpath) # include <fcntl.h> int rename(const char *oldpath, const char *newpath) { - _syscall2(int, renameat2, const char *, oldpath, const char *, newpath) + _syscall5(int, renameat2, int, olddfd, const char *, oldpath, + int, newdfd, const char *, newpath, int, flags) + return renameat2(AT_FDCWD, oldpath, AT_FDCWD, newpath, 0); } #else _syscall2(int, rename, const char *, oldpath, const char *, newpath) -- 2.7.4

6 years, 6 months

[PATCH] wordexp: Fix the usage of the internal _itoa function

by Segev Finer

The original from glibc received the end of the buffer and worked backwards. Ours needs the beginning of the buffer. Signed-off-by: Segev Finer <segev208(a)gmail.com> --- libc/misc/wordexp/wordexp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/libc/misc/wordexp/wordexp.c b/libc/misc/wordexp/wordexp.c index fb635fe91..285e81e87 100644 --- a/libc/misc/wordexp/wordexp.c +++ b/libc/misc/wordexp/wordexp.c @@ -491,10 +491,10 @@ parse_squote(char **word, size_t * word_length, size_t * max_length, #ifdef __WORDEXP_FULL static int eval_expr(char *expr, long int *result); -static char *_itoa(unsigned long long int value, char *buflim) +static char *_itoa(unsigned long long int value, char *buf) { - sprintf(buflim, "%llu", value); - return buflim; + sprintf(buf, "%llu", value); + return buf; } /* Functions to evaluate an arithmetic expression */ @@ -692,7 +692,7 @@ parse_arith(char **word, size_t * word_length, size_t * max_length, result[20] = '\0'; *word = w_addstr(*word, word_length, max_length, - _itoa(convertme, &result[20])); + _itoa(convertme, result)); free(expr); return *word ? 0 : WRDE_NOSPACE; } @@ -717,7 +717,7 @@ parse_arith(char **word, size_t * word_length, size_t * max_length, result[20] = '\0'; *word = w_addstr(*word, word_length, max_length, - _itoa(numresult, &result[20])); + _itoa(numresult, result)); free(expr); return *word ? 0 : WRDE_NOSPACE; } @@ -1313,7 +1313,7 @@ parse_param(char **word, size_t * word_length, size_t * max_length, if (seen_hash) { /* $# expands to the number of positional parameters */ buffer[20] = '\0'; - value = _itoa(__libc_argc - 1, &buffer[20]); + value = _itoa(__libc_argc - 1, buffer); seen_hash = 0; } else { /* Just $ on its own */ @@ -1338,13 +1338,13 @@ parse_param(char **word, size_t * word_length, size_t * max_length, /* Is it `$$'? */ if (*env == '$') { buffer[20] = '\0'; - value = _itoa(getpid(), &buffer[20]); + value = _itoa(getpid(), buffer); } /* Is it `${#*}' or `${#@}'? */ else if ((*env == '*' || *env == '@') && seen_hash) { buffer[20] = '\0'; value = _itoa(__libc_argc > 0 ? __libc_argc - 1 : 0, - &buffer[20]); + buffer); *word = w_addstr(*word, word_length, max_length, value); free(env); free(pattern); @@ -1770,7 +1770,7 @@ parse_param(char **word, size_t * word_length, size_t * max_length, param_length[20] = '\0'; *word = w_addstr(*word, word_length, max_length, _itoa(value ? strlen(value) : 0, - &param_length[20])); + param_length)); if (free_value) { assert(value != NULL); free(value); -- 2.18.0

6 years, 6 months

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devel September 2018