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$Id: gelf_newphdr.3 3743 2019-06-12 19:36:30Z jkoshy $
.Dd June 12, 2019 .Dt GELF_NEWPHDR 3 .Os .Sh NAME .Nm elf32_newphdr , .Nm elf64_newphdr , .Nm gelf_newphdr .Nd allocate an ELF program header table .Sh LIBRARY .Lb libelf .Sh SYNOPSIS n libelf.h .Ft "Elf32_Phdr *" .Fn elf32_newphdr "Elf *elf" "size_t count" .Ft "Elf64_Phdr *" .Fn elf64_newphdr "Elf *elf" "size_t count" n gelf.h .Ft "void *" .Fn gelf_newphdr "Elf *elf" "size_t count" .Sh DESCRIPTION These functions allocate an ELF Program Header table for an ELF descriptor. .Vt Elf32_Phdr and .Vt Elf64_Phdr descriptors are described further in .Xr elf 5 .
p Functions .Fn elf32_newphdr and .Fn elf64_newphdr allocate a table of .Ar count .Vt Elf32_Phdr and .Vt Elf64_Phdr descriptors respectively, discarding any existing program header table already present in the ELF descriptor .Ar elf . A value of zero for argument .Ar count may be used to delete an existing program header table from an ELF descriptor.
p Function .Fn gelf_newphdr will return a table of .Vt Elf32_Phdr or .Vt Elf64_Phdr with .Ar count elements depending on the ELF class of ELF descriptor .Ar elf .
p The functions set the .Dv ELF_F_DIRTY flag on the program header table. All members of the returned array of Phdr structures will be initialized to zero.
p After a successful call to these functions, the pointer returned by a prior call to .Fn elf32_getphdr or .Fn elf64_getphdr on the same descriptor .Ar elf will no longer be valid. .Sh RETURN VALUES The functions a valid pointer if successful, or NULL in case an error was encountered. .Sh COMPATIBILITY The .Fn gelf_newphdr function uses a type of .Ft "void *" for its returned value. This differs from some other implementations of the .Xr elf 3 API, which use an .Ft "unsigned long" return type. .Sh ERRORS These functions may fail with the following errors: l -tag -width "[ELF_E_RESOURCE]" t Bq Er ELF_E_ARGUMENT Argument .Ar elf was NULL. t Bq Er ELF_E_ARGUMENT Argument .Ar elf was not a descriptor for an ELF object. t Bq Er ELF_E_CLASS ELF descriptor .Ar elf was of an unrecognized class. t Bq Er ELF_E_RESOURCE An out of memory condition was detected. t Bq Er ELF_E_SEQUENCE An executable header was not allocated for ELF descriptor .Ar elf before using these APIs. .El .Sh SEE ALSO .Xr elf 3 , .Xr elf32_getphdr 3 , .Xr elf32_newehdr 3 , .Xr elf64_getphdr 3 , .Xr elf64_newehdr 3 , .Xr elf_flagphdr 3 , .Xr elf_getphnum 3 , .Xr gelf 3 , .Xr gelf_getphdr 3 , .Xr gelf_newehdr 3 , .Xr elf 5