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| author | Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> | 2022-12-27 18:11:42 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-03-27 13:57:55 -0300 |
| commit | 88677348b4de73874ca7d5a47451f42880f65f07 (patch) | |
| tree | 9ebe22b88c2487331521737dfdf089f9e3e2439f /login | |
| parent | e4d336f1ace7c7ca535f7f85485373752bc76ed5 (diff) | |
| download | glibc-88677348b4de73874ca7d5a47451f42880f65f07.tar.gz glibc-88677348b4de73874ca7d5a47451f42880f65f07.tar.xz glibc-88677348b4de73874ca7d5a47451f42880f65f07.zip | |
Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functions
They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'login')
| -rw-r--r-- | login/getutent.c | 5 | ||||
| -rw-r--r-- | login/getutid.c | 6 | ||||
| -rw-r--r-- | login/getutline.c | 5 |
3 files changed, 12 insertions, 4 deletions
diff --git a/login/getutent.c b/login/getutent.c index 7a49984912..ed8b162b8a 100644 --- a/login/getutent.c +++ b/login/getutent.c @@ -17,10 +17,11 @@ #include <stdlib.h> #include <utmp.h> +#include <set-freeres.h> /* Local buffer to store the result. */ -libc_freeres_ptr (static struct utmp *buffer); +static struct utmp *buffer; struct utmp * @@ -42,3 +43,5 @@ __getutent (void) } libc_hidden_def (__getutent) weak_alias (__getutent, getutent) + +weak_alias (buffer, __libc_getutent_freemem_ptr) diff --git a/login/getutid.c b/login/getutid.c index 7ecc93c0b7..658fdc08ca 100644 --- a/login/getutid.c +++ b/login/getutid.c @@ -17,10 +17,10 @@ #include <stdlib.h> #include <utmp.h> - +#include <set-freeres.h> /* Local buffer to store the result. */ -libc_freeres_ptr (static struct utmp *buffer); +static struct utmp *buffer; struct utmp * __getutid (const struct utmp *id) @@ -40,3 +40,5 @@ __getutid (const struct utmp *id) } libc_hidden_def (__getutid) weak_alias (__getutid, getutid) + +weak_alias (buffer, __libc_getutid_freemem_ptr) diff --git a/login/getutline.c b/login/getutline.c index c9dcd227a5..a10c256c42 100644 --- a/login/getutline.c +++ b/login/getutline.c @@ -17,10 +17,11 @@ #include <stdlib.h> #include <utmp.h> +#include <set-freeres.h> /* Local buffer to store the result. */ -libc_freeres_ptr (static struct utmp *buffer); +static struct utmp *buffer; struct utmp * @@ -41,3 +42,5 @@ __getutline (const struct utmp *line) } libc_hidden_def (__getutline) weak_alias (__getutline, getutline) + +weak_alias (buffer, __libc_getutline_freemem_ptr) |